EP0280756A1 - Process for improving the grinding efficiency of grinding and honing tools - Google Patents

Process for improving the grinding efficiency of grinding and honing tools Download PDF

Info

Publication number
EP0280756A1
EP0280756A1 EP87103236A EP87103236A EP0280756A1 EP 0280756 A1 EP0280756 A1 EP 0280756A1 EP 87103236 A EP87103236 A EP 87103236A EP 87103236 A EP87103236 A EP 87103236A EP 0280756 A1 EP0280756 A1 EP 0280756A1
Authority
EP
European Patent Office
Prior art keywords
grinding
metal
pore spaces
reaction
soap
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP87103236A
Other languages
German (de)
French (fr)
Other versions
EP0280756B1 (en
Inventor
Karl Dr. Elbel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Carborundum Schleifmittelwerke GmbH
Original Assignee
DR ELBEL SCHLEIFMITTEL GmbH
Carborundum Schleifmittelwerke GmbH
ELBEL SCHLEIFMITTEL
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by DR ELBEL SCHLEIFMITTEL GmbH, Carborundum Schleifmittelwerke GmbH, ELBEL SCHLEIFMITTEL filed Critical DR ELBEL SCHLEIFMITTEL GmbH
Priority to DE8787103236T priority Critical patent/DE3763377D1/en
Priority to EP87103236A priority patent/EP0280756B1/en
Priority to AT87103236T priority patent/ATE54084T1/en
Priority to ES87103236T priority patent/ES2016583B3/en
Priority to US07/164,468 priority patent/US4784671A/en
Publication of EP0280756A1 publication Critical patent/EP0280756A1/en
Application granted granted Critical
Publication of EP0280756B1 publication Critical patent/EP0280756B1/en
Priority to GR90400694T priority patent/GR3003005T3/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D3/00—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
    • B24D3/02—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent
    • B24D3/20—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially organic
    • B24D3/28—Resins or natural or synthetic macromolecular compounds
    • B24D3/32—Resins or natural or synthetic macromolecular compounds for porous or cellular structure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D3/00—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
    • B24D3/02—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent
    • B24D3/04—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially inorganic
    • B24D3/14—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially inorganic ceramic, i.e. vitrified bondings
    • B24D3/18—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially inorganic ceramic, i.e. vitrified bondings for porous or cellular structure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D3/00—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
    • B24D3/34—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents characterised by additives enhancing special physical properties, e.g. wear resistance, electric conductivity, self-cleaning properties
    • B24D3/342—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents characterised by additives enhancing special physical properties, e.g. wear resistance, electric conductivity, self-cleaning properties incorporated in the bonding agent

Definitions

  • the invention relates to a method according to the preamble of claim 1.
  • the object of the invention is to achieve this advantageous grinding behavior even with conventionally produced grinding or honing bodies.
  • ceramic-bonded disks with a relatively large pore volume primarily a structure 7 or larger, are treated with metal soaps until the volume of the metal soaps introduced corresponds to at least 5% of the total volume of the grinding disk.
  • plastic-bonded grinding wheels provided that they have a corresponding structure.
  • Metal soaps are to be understood here as neutral or basic salts of mono- or polyvalent metals or amines. Such soaps are advantageously used which, on the one hand, are compatible with the environment and coolants, and on the other hand have the highest possible melting point. Salts and soaps of the following fatty acids, whose melting point (F) is also given, are to be mentioned here: with calcium, zinc, aluminum, sodium or lithium.
  • Montanic acids C22 ... to C34 with melting points above 80 ° C can also be used as fatty acids, as can hydroxy compounds of the listed compounds, for example 12-oxystearic acid.
  • sodium or lithium soaps can be dissolved in hot water.
  • the grinding wheel can be soaked with such solutions, if necessary in vacuo.
  • the disc should also be warmed (approx. 90 ° C) to avoid premature gelation of the solution.
  • the water After the solution has been gelled by cooling, the water must be removed, preferably by freeze-drying. This step can be followed by a further impregnation with subsequent drying in order to introduce the desired amount of soap into the glass body.
  • C17H35-COOH + NaOH C17H35-COONa + H2O
  • N2N-C2H4NH2 (C17H35-CO) 2-C2H4- H2 + 2 H2O

Abstract

Zur Verbesserung der Schleifleistung keramisch oder kunststoffgebundener Schleif- oder Honkörper werden in deren Porenräume Metallseifen eingelagert. Diese Einlagerung der Metallseifen kann auf verschiedene Weise erfolgen, entweder dadurch, daß der Schleif- oder Honkörper in einer Lösung der Metallseife gegebenenfalls unter Vakuum, solange getränkt wird, bis eine ausreichende Ausfüllung der Porenräume mit der Metallseife erfolgt ist, oder, daß ein Reaktionsgemisch in die Porenräume eingebracht wird, wonach bei Erhitzung dieses Reaktionsgemischs dann eine chemische Reaktion abläuft, die zur Bildung der erwünschten Metallseife direkt in den Porenräumen führt. Ein derartiges Reaktionsgemisch besteht beispielsweise aus einer Fettsäure wie der Stearinsäure und einem Metalloxid oder - hydroxid, wodurch sich bei der Reaktion die entsprechende Natriumseife unter gleichzeitiger Entstehung von Wasser bildet. Die Reaktionsnebenprodukte (wie hier das Wasser) werden dann ausgetrieben. Die derart behandelten Schleif- oder Honkörper weisen gegenüber den unbehandelten Schleif- oder Honkörpern eine wesentliche Verbesserung der Schleifleistung in dem Sinne auf, daß man mit solchen Scheiben vergütete und gehärtete Stähle schneller und kühler schleifen kann, daß sich insbesondere solche Schleifscheiben während des Schleifens nicht zusetzen und die daraus resultierenden Nachteile wie zum Beispiel Wiederaufschweißungen und Blechmantelbildungen vermieden werden.To improve the grinding performance of ceramic or plastic-bonded grinding or honing bodies, metal soaps are stored in their pore spaces. This storage of the metal soaps can be carried out in various ways, either by soaking the grinding or honing body in a solution of the metal soap, if appropriate under vacuum, until the pore spaces have been adequately filled with the metal soap, or by a reaction mixture in the pore spaces is introduced, after which, when this reaction mixture is heated, a chemical reaction takes place which leads to the formation of the desired metal soap directly in the pore spaces. Such a reaction mixture consists, for example, of a fatty acid such as stearic acid and a metal oxide or hydroxide, as a result of which the corresponding sodium soap is formed during the reaction with the simultaneous formation of water. The reaction by-products (such as water here) are then driven off. The grinding or honing bodies treated in this way have a significant improvement in the grinding performance compared to the untreated grinding or honing bodies in the sense that tempered and hardened steels can be ground faster and cooler with such discs, in particular that such grinding discs do not become clogged during grinding and the resulting disadvantages such as rewelding and sheet metal jacket formation can be avoided.

Description

Die Erfindung betrifft ein Verfahren nach dem Oberbegriff des Patentanspruches 1.The invention relates to a method according to the preamble of claim 1.

Es ist bekannt, daß beim Schleifen wärmeempfindlicher Stähle mit reduzierter Zerspanleistung gearbeitet werden muß wegen der sonst unzulässigen thermischen Beeinflußung des Werkstoffgefüges. Als hauptsächliche thermisch bedingte Schleifschäden sind hierbei zu nennen: Maßabweichung und Verzug, Brandmarken, Gefügeverände­rungen, Auf- und Neuhärtung, Weichhautbildung, ungünstige Beein­flussung des Eigenspannungszustandes, Rißbildung und chemische Reaktionen.It is known that when grinding heat-sensitive steels, reduced cutting power must be used because of the otherwise impermissible thermal influence on the material structure. The main thermally induced grinding damage can be mentioned here: dimensional deviation and warpage, branding, structural changes, hardening and new hardening, soft skin formation, unfavorable influence on the state of internal stress, crack formation and chemical reactions.

Auch beim Schleifen von NE-Metallen wie Aluminium, Messing, Titan u.a. treten Schwierigkeiten mit den herkömmlichen Schleifscheiben auf, und zwar dadurch, daß sich die Späne in der Scheibenoberfläche verkeilen und nachfolgend zum Teil wieder auf die geschliffene Werkstückoberfläche aufgeschweißt werden. Man hilft sich dann dadurch, daß man mit Schleiföl als Kühlmittel arbeitet und die Scheiben kontinuierlich abrichtet. Dies führt einerseits zu Umwelt­problemen (verbrauchtes Schleiföl ist "Abfallöl", kein "Altöl") und entsprechenden Kosten, auch steigt der Schleifscheibenverbrauch durch das "continuous dressing", wodurch die Schleifkosten weiter steigen.Difficulties with conventional grinding wheels also arise when grinding non-ferrous metals such as aluminum, brass, titanium, among other things, because the chips wedge in the wheel surface and are subsequently partially welded back onto the ground workpiece surface. You can then help yourself by working with grinding oil as a coolant and continuously dressing the discs. On the one hand, this leads to environmental problems (used grinding oil is "waste oil", not "old oil") and corresponding costs, and the grinding wheel consumption increases due to "continuous dressing", which further increases the grinding costs.

Es hat nicht an Versuchen gefehlt, hier zumindest in Teilbereichen Abhilfe zu schaffen. So werden schon seit Jahrzehnten für bestimmte Aufgaben keramisch gebundene Schleif- und Honkörper nachträglich in der Wärme und zumeist im Vakuum mit flüssigem Schwefel getränkt und anschließend erkalten gelassen. Der Schwefel wirkt hier als Hochdruckschmiermittel. Es läßt sich jedoch nicht vermeiden, daß beim Arbeiten mit derart getränkten Schleifkörpern chemische Reak­tionen mit der Werkstückoberfläche ablaufen. Schwefel macht aber den Stahl spröde und rotbrüchig und ist mithin sehr schädlich, von der Umweltbelastung einmal abgesehen.There has been no shortage of attempts to remedy this, at least in some areas. For decades, ceramically bonded grinding and honing bodies have been soaked with liquid sulfur for certain tasks in the heat and mostly in a vacuum and then left to cool. The sulfur acts here as a high pressure lubricant. However, it cannot be avoided that chemical reactions with the workpiece surface take place when working with such impregnated grinding wheels. However, sulfur makes the steel brittle and brittle and is therefore very harmful, apart from the environmental impact.

Ein anderer Weg, der vorgeschlagen wurde, ist die Zuführung von Kühlschmiermittel über eine Hohlwelle in die Schleifscheibenbohrung und von dort durch die entsprechend poröse Schleifscheibe an die Kontaktstelle Scheibe/Werkstück. Hier muß das im Umlauf geführte Kühlmittel extrem gereinigt werden, damit sich die Poren der Schleifscheibe nicht verstopfen. (Industrie-Anzeiger 53, 1982, S.39ff)Another way that has been proposed is the supply of cooling lubricant via a hollow shaft into the grinding wheel bore and from there through the correspondingly porous grinding wheel to the contact point between wheel and workpiece. Here the circulating coolant must be cleaned extremely so that the pores of the grinding wheel do not become blocked. (Industrie-Anzeiger 53, 1982, p.39ff)

Es hat sich gezeigt, daß Schleifkörper, die gemäß der EP-0 114 280 bzw. US-4,541,843 unter Zusatz einer Metallseife hergestellt wurden, überraschend gute Schleifeigenschaften besitzen. So lassen sich mit solchen Scheiben vergütete und gehärtete Stähle schneller und kühler schleifen als mit herkömmlichen Schleifscheiben. Beim Schleifen von Aluminium, Titan, Kunststoffen und ähnlichen Werk­stoffen setzen sich solche metallseifenenthaltenden Schleifscheiben bzw. Honkörper nicht zu, weshalb die gefürchteten Wiederauf­schweißungen und Blechmantelbildungen vermieden werden. Auch die Gratbildung wird stark unterdrückt, wenn nicht völlig vermieden.It has been shown that abrasive bodies which have been produced in accordance with EP-0 114 280 or US Pat. No. 4,541,843 with the addition of a metal soap have surprisingly good grinding properties. In this way, tempered and hardened steels can be ground faster and cooler than with conventional grinding wheels. When grinding aluminum, titanium, plastics and similar materials, such grinding disks or honing bodies containing metal soap do not become clogged, which is why the feared re-welding and sheet metal jacket formation are avoided. Burr formation is also strongly suppressed, if not completely avoided.

Aufgabe der Erfindung ist es, dieses vorteilhafte Schleifverhalten auch bei konventionell hergestellten Schleif- oder Honkörpern zu erreichen.The object of the invention is to achieve this advantageous grinding behavior even with conventionally produced grinding or honing bodies.

Erfindungsgemäß wird diese Aufgabe gemäß dem kennzeichnenden Teil des Patentanspruchs 1 gelöst.According to the invention, this object is achieved in accordance with the characterizing part of patent claim 1.

Vorteilhafterweise werden hierbei fertig gebrannte, keramisch gebundene Scheiben mit verhältnismäßig großem Porenvolumen, vor­nehmlich einer Struktur 7 oder größer, mit Metallseifen behandelt, bis das Volumen der eingebrachten Metallseifen wenigstens 5 % des Gesamtvolumens der Schleifscheibe entspricht. Entsprechendes gilt für kunststoffgebundene Schleifkörper, sofern sie eine ent­sprechende Struktur besitzen.Advantageously, completely fired, ceramic-bonded disks with a relatively large pore volume, primarily a structure 7 or larger, are treated with metal soaps until the volume of the metal soaps introduced corresponds to at least 5% of the total volume of the grinding disk. The same applies to plastic-bonded grinding wheels, provided that they have a corresponding structure.

Als Metallseifen sollen hier verstanden werden neutrale oder ba­sische Salze ein- oder mehrwertiger Metalle oder Amine. Vorteil­hafterweise werden solche Seifen verwendet, die einerseits umwelt- und kühlmittelverträglich sind, und die andererseits einen möglichst hohen Schmelzpunkt haben. Hierzu sind vornehmlich zu nennen Salze bzw. Seifen folgender Fettsäuren, deren Schmelzpunkt (F) mit ange­geben ist:

Figure imgb0001
mit Kalzium, Zink, Aluminium, Natrium oder Lithium.Metal soaps are to be understood here as neutral or basic salts of mono- or polyvalent metals or amines. Such soaps are advantageously used which, on the one hand, are compatible with the environment and coolants, and on the other hand have the highest possible melting point. Salts and soaps of the following fatty acids, whose melting point (F) is also given, are to be mentioned here:
Figure imgb0001
 with calcium, zinc, aluminum, sodium or lithium.

Als Fettsäuren können auch Montansäuren C₂₂... bis C₃₄ mit Schmelzpunkten über 80° C verwendet werden, ebenso wie Hydroxyverbindungen der auf­geführten Verbindungen, als Beispiel sei hierzu die 12-Oxystearin­säure erwähnt.Montanic acids C₂₂ ... to C₃₄ with melting points above 80 ° C can also be used as fatty acids, as can hydroxy compounds of the listed compounds, for example 12-oxystearic acid.

Es gibt verschiedene Möglichkeiten, solche Metallseifen in die Schleifkörper einzubringen, die im folgenden im einzelnen anhand von Beispielen erläutert werden:There are various ways of introducing such metal soaps into the grinding wheels, which are explained in detail below using examples:

So lassen sich zum Beispiel Natrium-oder Lithium-Seifen in heißem Wasser lösen. Mit solchen Lösungen kann die Schleifscheibe, gegebe­nenfalls im Vakuum, getränkt werden. Hierbei sollte die Scheibe ebenfalls erwärmt sein (ca. 90° C), um vorzeitiges Gelieren der Lösung zu vermeiden. Nach dem Gelieren der Lösung durch Abkühlung muß das Wasser entfernt werden, am besten durch Gefriertrocknung. Auf diesen Arbeitsgang kann eine weitere Tränkung mit anschließen- der Trocknung folgen, um die gewünschte Menge an Seife in den Scheibenkörper einzubringen.For example, sodium or lithium soaps can be dissolved in hot water. The grinding wheel can be soaked with such solutions, if necessary in vacuo. The disc should also be warmed (approx. 90 ° C) to avoid premature gelation of the solution. After the solution has been gelled by cooling, the water must be removed, preferably by freeze-drying. This step can be followed by a further impregnation with subsequent drying in order to introduce the desired amount of soap into the glass body.

Dieses Tränkverfahren ist in analoger Weise auch mit entsprechenden organischen Lösungsmitteln möglich. In beiden Fällen kann es zweck­mäßig sein, geringe Mengen an Bindemittel zuzusetzen, im Falle wässriger Lösungen beispielsweise Polyvinylalkohol, im Falle orga­nischer Lösungsmittel beispielsweise Polyvinylazetat, Zellulose­azetat, o.ä., um diese sich pulverförmig abscheidenden Seifen in den Scheibenporen zu fixieren.This impregnation process is also possible in an analogous manner with appropriate organic solvents. In both cases, it may be expedient to add small amounts of binder, in the case of aqueous solutions, for example, polyvinyl alcohol, in the case of organic solvents, for example polyvinyl acetate, cellulose acetate, or the like, in order to fix these powder-separating soaps in the disk pores.

Eine weitere Möglichkeit der Einbringung solcher Seifen in ent­sprechend poröse Schleifscheibenkörper ist die, daß sich die Seife in der Schleifscheibe bzw. in dem Honkörper durch chemische Reak­tion bildet. Dies hat den Vorteil, daß sich nur geringe Wasser­mengen bilden, die entfernt werden müssen, und daß die Seifen in kompakter Form anfallen, also ggf. nur eine einzige Tränkung ausreicht. Ferner kann hier auf den Zusatz geringer Bindemittel­mengen verzichtet werden.Another possibility of introducing such soaps into correspondingly porous grinding wheel bodies is that the soap is formed in the grinding wheel or in the honing body by chemical reaction. This has the advantage that only small amounts of water are formed which have to be removed and that the soaps are obtained in a compact form, so that only a single impregnation may be sufficient. Furthermore, the addition of small amounts of binder can be dispensed with here.

Beispielsweise wird Stearinsäure geschmolzen, die stöchiometrische Menge Zinkoxid hierin dispergiert und die erhitzte Scheibe sofort im Anschluß daran hiermit getränkt, ggf. im Vakuum, und solange weiter erhitzt, bis die folgende Reaktion
2 C₁₇H₃₅-COOH + ZnO = (C₁₇H₃₅-COO)₂Zn + H₂O
abgelaufen und das Reaktionswasser entfernt ist. Anstelle ent­sprechender Metalloxide können auch Metallhydroxide oder -carbo­nate verwendet werden, so daß dann beispielsweise folgende ent­sprechende Reaktionen zur Bildung der Metallseife im Schleifkörper ablaufen:
2 C₁₇H₃₅-COOH + Na₂CO₃ = 2 C₁₇H₃₅-COONa + CO₂ + H₂O
C₁₇H₃₅-COOH + NaOH = C₁₇H₃₅-COONa + H₂O
2 C₁₇H₃₅-COOH + N₂N-C₂H₄NH₂ = (C₁₇H₃₅-CO )₂-C₂H₄-

Figure imgb0002
H₂ + 2 H₂OFor example, stearic acid is melted, the stoichiometric amount of zinc oxide is dispersed therein, and the heated disk is immediately impregnated thereafter, if necessary in vacuo, and heated until the subsequent reaction
2 C₁₇H₃₅-COOH + ZnO = (C₁₇H₃₅-COO) ₂Zn + H₂O
expired and the water of reaction is removed. Instead of corresponding metal oxides, metal hydroxides or carbonates can also be used, so that, for example, the following corresponding reactions to form the metal soap then take place in the grinding wheel:
2 C₁₇H₃₅-COOH + Na₂CO₃ = 2 C₁₇H₃₅-COONa + CO₂ + H₂O
C₁₇H₃₅-COOH + NaOH = C₁₇H₃₅-COONa + H₂O
2 C₁₇H₃₅-COOH + N₂N-C₂H₄NH₂ = (C₁₇H₃₅-CO) ₂-C₂H₄-
Figure imgb0002
H₂ + 2 H₂O

Eine weitere Möglichkeit der Bildung erfindungsgemäßer Metallseifen in den Schleif- bzw. Honkörpern durch chemische Reaktion besteht darin, daß man von einer entsprechenden Schmelze einer Ammonium­seife ausgeht, welcher die stöchiometrische Menge des entsprechen­den Metalloxids bzw. Metallhydroxids zugesetzt wurde. Nach der Tränkung wird zur Bildung der Metallseife das bei der Reaktion
(Beispiel):
C₁₇H₃₅-COONH₄ + LiOH = C₁₇H₃₅-COOLi + NH₃ + H₂O
entstehende Wasser und Ammoniak ausgetrieben.Another possibility for the formation of metal soaps according to the invention in the abrasive or honing bodies by chemical reaction is to start from a corresponding melt of an ammonium soap, to which the stoichiometric amount of the corresponding metal oxide or metal hydroxide has been added. After the impregnation, the metal soap forms during the reaction
(Example):
C₁₇H₃₅-COONH₄ + LiOH = C₁₇H₃₅-COOLi + NH₃ + H₂O
emerging water and ammonia expelled.

Claims (10)

1. Verfahren zur Verbesserug der Schleifleistung keramisch oder kunststoffgebundener Schleif- oder Honkörper, dadurch gekennzeichnet, daß deren Porenräume nach Herstellung der Schleif- bzw. Honkörper zumindest teilweise mit Metallseifen ausgefüllt werden.1. A method for improving the grinding performance of ceramic or plastic-bonded grinding or honing bodies, characterized in that their pore spaces are at least partially filled with metal soaps after production of the grinding or honing bodies. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß hierbei Seifen der Metalle der ersten und zweiten Haupt- bzw. Neben­gruppe des periodischen Systems verwendet werden.2. The method according to claim 1, characterized in that soaps of the metals of the first and second main or subgroup of the periodic system are used. 3. Verfahren nach Anspruch 1 und 2, dadurch gekennzeichnet, daß die Metallseifen Salze der Stearin-, Hydroxystearin- oder Pal­mitinsäure sind.3. The method according to claim 1 and 2, characterized in that the metal soaps are salts of stearic, hydroxystearic or palmitic acid. 4. Verfahren nach Anspruch 1 bis 3, dadurch gekennzeichnet, daß der Volumenanteil der eingebrachten Metallseifen mindestens 5% des gesamten Schleifkörpervolumens ausmacht.4. The method according to claim 1 to 3, characterized in that the volume fraction of the introduced metal soaps makes up at least 5% of the total grinding wheel volume. 5. Verfahren nach Anspruch 1 bis 4, dadurch gekennzeichnet, daß die Einbringung der Metallseifen in die Porenräume durch Tränkung der Schleif- bzw. Honkörper in einer wässrigen oder organischen Lösung der Metallseifen erfolgt, und daß das Lösungsmittel danach entfernt wird.5. The method according to claim 1 to 4, characterized in that the introduction of the metal soaps into the pore spaces by impregnation of the grinding or honing bodies in an aqueous or organic solution of the metal soaps, and that the solvent is then removed. 6. Verfahren nach Anspruch 1 bis 4, dadurch gekennzeichnet, daß zunächst Substanzen miteinander vermischt und durch Erwärmung verflüssigt werden, die ein Reaktionsgemisch zur Bildung einer der erwünschten Metallseife bilden, daß dieses Reaktionsgemisch unter Vakuum in die Porenräume eingebracht wird, worauf unter Wärmezufuhr die Reaktion zur Bildung der Metallseife abläuft, und daß danach die Reaktionsnebenprodukte ausgetrieben werden.6. The method according to claim 1 to 4, characterized in that first substances are mixed together and liquefied by heating, which form a reaction mixture to form one of the desired metal soap, that this reaction mixture is introduced into the pore spaces under vacuum, whereupon the reaction under heat expires to form the metal soap, and that the reaction by-products are then driven off. 7. Verfahren nach Anspruch 6, dadurch gekennzeichnet, daß das Reaktionsgemisch aus einer Fettsäure (CnH2n+1-COOH) mit n≧11 und einer Metallverbindung besteht.7. The method according to claim 6, characterized in that the reaction mixture consists of a fatty acid (C n H 2n + 1 -COOH) with n ≧ 11 and a metal compound. 8. Verfahren nach Anspruch 6 und 7, dadurch gekennzeichnet, daß die Fettsäure Stearinsäure und die Metallverbindung Natrium­hydroxid ist, daß die Erwärmung über 71°C erfolgt, wonach nach Einbringung in die Porenräume sich Natriumstearat und Wasser nach folgender Reaktionsgleichung bildet:
C₁₇H₃₅-COOH + NaOH = C₁₇H₃₅-COONa + H₂O8. The method according to claim 6 and 7, characterized in that the fatty acid stearic acid and the metal compound is sodium hydroxide, that the heating takes place above 71 ° C, after which sodium stearate and water form after introduction into the pore spaces according to the following reaction equation:
C₁₇H₃₅-COOH + NaOH = C₁₇H₃₅-COONa + H₂O 9. Verfahren nach Anspruch 1 bis 4, dadurch gekennzeichnet, daß die Einbringung der Metallseifen in die Porenräume dadurch erfolgt, daß eine Schmelze aus Ammoniumseife hergestellt wird, der die stöchiometrische Menge eines Metalloxids oder - hydroxids zugesetzt wird, daß der Schleif- oder Honkörper damit getränkt wird, und daß nach Ablauf der Reaktion zur Bildung der Metall­seife das entstandene Wasser und Ammoniak ausgetrieben werden.9. The method according to claim 1 to 4, characterized in that the introduction of the metal soaps into the pore spaces takes place in that a melt is made of ammonium soap, to which the stoichiometric amount of a metal oxide or hydroxide is added, that the grinding or honing body with it is soaked, and that after the reaction to form the metal soap, the water and ammonia formed are expelled. 10. Verfahren nach Anspruch 9, dadurch gekennzeichnet, daß die Ammoniumseife C₁₇H₃₅-COONH₄ und das Metallhydroxid LiOH ist, wo­durch folgende Reaktion abläuft:
C₁₇H₃₅-COONH₄ + LiOH = C₁₇H₃₅-COOLi + NH₃ + H₂O10. The method according to claim 9, characterized in that the ammonium soap is C₁₇H₃₅-COONH₄ and the metal hydroxide LiOH, whereby the following reaction takes place:
C₁₇H₃₅-COONH₄ + LiOH = C₁₇H₃₅-COOLi + NH₃ + H₂O
EP87103236A 1987-03-06 1987-03-06 Process for improving the grinding efficiency of grinding and honing tools Expired - Lifetime EP0280756B1 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
DE8787103236T DE3763377D1 (en) 1987-03-06 1987-03-06 METHOD FOR IMPROVING THE GRINDING PERFORMANCE OF GRINDING AND HONOR BODIES.
EP87103236A EP0280756B1 (en) 1987-03-06 1987-03-06 Process for improving the grinding efficiency of grinding and honing tools
AT87103236T ATE54084T1 (en) 1987-03-06 1987-03-06 METHOD OF IMPROVING ABRASIVE AND HONING BODY ABRASIVE PERFORMANCE.
ES87103236T ES2016583B3 (en) 1987-03-06 1987-03-06 PROCEDURE FOR THE IMPROVEMENT OF THE SHARPENING POWER OF THE SHARPENING AND RECTIFYING BODIES.
US07/164,468 US4784671A (en) 1987-03-06 1988-03-04 Method of improving the grinding performance of grinding and honing bodies
GR90400694T GR3003005T3 (en) 1987-03-06 1990-09-05 Process for improving the grinding efficiency of grinding and honing tools

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP87103236A EP0280756B1 (en) 1987-03-06 1987-03-06 Process for improving the grinding efficiency of grinding and honing tools

Publications (2)

Publication Number Publication Date
EP0280756A1 true EP0280756A1 (en) 1988-09-07
EP0280756B1 EP0280756B1 (en) 1990-06-27

Family

ID=8196805

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87103236A Expired - Lifetime EP0280756B1 (en) 1987-03-06 1987-03-06 Process for improving the grinding efficiency of grinding and honing tools

Country Status (6)

Country Link
US (1) US4784671A (en)
EP (1) EP0280756B1 (en)
AT (1) ATE54084T1 (en)
DE (1) DE3763377D1 (en)
ES (1) ES2016583B3 (en)
GR (1) GR3003005T3 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0414346A1 (en) * 1989-06-23 1991-02-27 Minnesota Mining And Manufacturing Company Coated abrasive article overcoated with loading resistant top layer
DE19627926A1 (en) * 1996-07-11 1998-01-15 Ks Aluminium Technologie Ag Process for machining cylinder liners
CN114161329A (en) * 2021-11-27 2022-03-11 郑州磨料磨具磨削研究所有限公司 Preparation method of ceramic bond superhard grinding wheel

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995024992A1 (en) * 1994-03-16 1995-09-21 Minnesota Mining And Manufacturing Company Abrasive articles and method of making abrasive articles
US5667542A (en) * 1996-05-08 1997-09-16 Minnesota Mining And Manufacturing Company Antiloading components for abrasive articles
US5704952A (en) * 1996-05-08 1998-01-06 Minnesota Mining And Manufacturing Company Abrasive article comprising an antiloading component
CA2253498A1 (en) * 1996-05-08 1997-11-13 Kam W. Law Abrasive article comprising an antiloading component
US6261682B1 (en) 1998-06-30 2001-07-17 3M Innovative Properties Abrasive articles including an antiloading composition
US6500220B1 (en) 2002-02-19 2002-12-31 Cimcool Industrial Products, Inc. Impregnated grinding wheel
JP2004291114A (en) * 2003-03-26 2004-10-21 Toyoda Mach Works Ltd Grinding stone with lubrication particle and its manufacturing method
CN100479200C (en) * 2003-08-29 2009-04-15 索拉尔系统有限公司 Extracting heat from an object
US7195658B2 (en) * 2003-10-17 2007-03-27 Saint-Gobain Abrasives, Inc. Antiloading compositions and methods of selecting same
KR100719026B1 (en) * 2005-11-10 2007-05-16 주식회사 광명연마 Fiber disk and manufacturing method thereof
JP2008266397A (en) * 2007-04-18 2008-11-06 Three M Innovative Properties Co Clogging prevention composition for abrasive material and abrasive material having clogging prevention film
JP5963586B2 (en) * 2012-07-13 2016-08-03 豊田バンモップス株式会社 Vitrified bond whetstone
JP6407785B2 (en) * 2015-03-31 2018-10-17 株式会社東京精密 Grinding wheel, method of manufacturing the same, and apparatus equipped with the grinding wheel
JP2019000981A (en) * 2018-09-19 2019-01-10 株式会社東京精密 Abrasive grind stone, manufacturing method of the same, and device with grind stone
JP7335426B2 (en) * 2019-09-05 2023-08-29 サンーゴバン アブレイシブズ，インコーポレイティド Coated abrasive with improved supersize coat

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2768886A (en) * 1954-06-29 1956-10-30 Norton Co Sandpaper
DE1803233A1 (en) * 1967-10-13 1969-06-26 Norton Co Grinding wheel
US4324797A (en) * 1979-08-08 1982-04-13 Seiichi Ishizaka, Director General Of Agency Of Industrial Science And Technology Metal soap compositions
EP0090959A2 (en) * 1982-04-02 1983-10-12 Schaeffler Teppichboden GmbH Method of producing a foam-layered panel

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3494752A (en) * 1968-03-04 1970-02-10 Lear Siegler Inc Method of manufacturing metal bonded abrasive gear hones
JPS5215007B2 (en) * 1971-10-19 1977-04-26
JPS53140692A (en) * 1977-05-14 1978-12-07 Daichiku Co Ltd Wax substance treating grind stone
DE3301925A1 (en) * 1983-01-21 1984-07-26 SEA Schleifmittel Entwicklung Anwendung GmbH, 7530 Pforzheim METHOD FOR PRODUCING ABRASIVE BODIES
JPS60178066A (en) * 1984-02-24 1985-09-12 Canon Electronics Inc Wire guide for wire dot printer
JPS61159375A (en) * 1984-12-28 1986-07-19 Tsuneo Masuda Whetstone polymer composite material for melting and crushing machine and manufacture thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2768886A (en) * 1954-06-29 1956-10-30 Norton Co Sandpaper
DE1803233A1 (en) * 1967-10-13 1969-06-26 Norton Co Grinding wheel
US4324797A (en) * 1979-08-08 1982-04-13 Seiichi Ishizaka, Director General Of Agency Of Industrial Science And Technology Metal soap compositions
EP0090959A2 (en) * 1982-04-02 1983-10-12 Schaeffler Teppichboden GmbH Method of producing a foam-layered panel

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
CHEMICAL ABSTRACTS, Band 89, 1978, Seite 268, Zusammenfassung Nr. 219679z, Columbus, Ohio, US; A.V. YAKIMOV et al.: "Study of the cutting ability of impregnated grinding wheels", & VESTN. MASHINOSTR. 1978, 58(6), 31-3 *
JAPANESE PATENTS GAZETTE, Woche A27, Zusammenfassung 48464A/27, 14. August 1978, Derwent Publications Ltd, London, GB; & JP-A-53 058 568 (SUMITOMO CHEMICAL K.K.) 26-05-1978 *
PATENT ABSTRACTS OF JAPAN, Band 10, Nr. 18, 24. Januar 1986, Seite 115 M 448; & JP-A-60 178 066 (KIYANON DENSHI K.K.) 12-09-1985 *
SOVIET INVENTIONS ILLUSTRATED, Woche 84/22, Zusammenfassung 84-139747/22, 11. Juli 1984, Derwent Publications Ltd, London, GB; & SU-A-1 041 279 (VOLZHSK ABRASIVE RE) 15-09-1983 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0414346A1 (en) * 1989-06-23 1991-02-27 Minnesota Mining And Manufacturing Company Coated abrasive article overcoated with loading resistant top layer
DE19627926A1 (en) * 1996-07-11 1998-01-15 Ks Aluminium Technologie Ag Process for machining cylinder liners
CN114161329A (en) * 2021-11-27 2022-03-11 郑州磨料磨具磨削研究所有限公司 Preparation method of ceramic bond superhard grinding wheel
CN114161329B (en) * 2021-11-27 2023-02-28 郑州磨料磨具磨削研究所有限公司 Preparation method of ceramic bond superhard grinding wheel

Also Published As

Publication number Publication date
US4784671A (en) 1988-11-15
DE3763377D1 (en) 1990-08-02
EP0280756B1 (en) 1990-06-27
ATE54084T1 (en) 1990-07-15
ES2016583B3 (en) 1990-11-16
GR3003005T3 (en) 1993-02-17

Similar Documents

Publication Publication Date Title
EP0280756A1 (en) Process for improving the grinding efficiency of grinding and honing tools
DE2236011A1 (en) ROUNDED DIAMOND PARTICLE FOR USE IN COOLING PANELS
DE3813711C2 (en) Process and device for finishing collector blanks
DD207171A5 (en) TOOL FOR THE PRODUCTION OF EXTERNAL PROFILE FORMS
DE1765433A1 (en) Electrically conductive grinding tool with ceramic bond and process for its manufacture
DE2601953A1 (en) CUTTING PLATE FOR MEAT MINCER AND METHOD OF MANUFACTURING THEREOF
DE3810230A1 (en) GRINDING BODY FOR USE IN SLIDING GRINDING MACHINES AND METHOD FOR THE PRODUCTION THEREOF
DE3815111C1 (en) Treatment agent for vibratory grinding, and vibratory grinding process using this treatment agent
DE1571616A1 (en) Process for the manufacture of graphite binder grinding wheels
ES2093745T3 (en) FILTRATION ADJUVANT AND METHOD TO USE THE SAME TO REGENERATE REFRIGERANT OILS USED IN THE METAL WORK.
DE1577464A1 (en) Process for finishing workpieces and finishing means for carrying out the process
DE2013674B2 (en) Process for hardening workpieces, such as tools, by means of an energy beam
DE2349326A1 (en) SANDING GRAIN AND GRAIN BLEND
DE1652892A1 (en) Impregnated grinding wheel
DE3132860A1 (en) "METHOD FOR PRODUCING END MILLING AND MILLING MANUFACTURED"
DE680384C (en) Device for pre-graphitizing cylinder sliding surfaces with solid graphite, especially for internal combustion engines
DE1496729A1 (en) Electrolyte for the electrochemical processing of surfaces of metallic materials
DE2137022A1 (en) Fiber-reinforced bearing metal and process for its manufacture
DE909447C (en) Method and device for the production of clutch teeth on tool and machine parts of all kinds, in particular on bulky and thin-walled parts
AT336430B (en) ABRASIVES
DE386132C (en) Process for the production of cutting and milling tools from iron that cannot be hardened per se
CH647446A5 (en) METHOD FOR MACHINING WORKPIECES BY MEANS OF ROTARY CUTTING TOOLS.
DE871502C (en) Method and device for manufacturing composite bearings
DE1533959C2 (en) Process for the surface treatment of spring steel wire
AT44583B (en) Method of making the hollowing out of barrel staves.

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19880314

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE ES FR GB GR IT LI LU NL SE

17Q First examination report despatched

Effective date: 19881104

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: CARBORUNDUM SCHLEIFMITTELWERKE GMBH

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE ES FR GB GR IT LI LU NL SE

REF Corresponds to:

Ref document number: 54084

Country of ref document: AT

Date of ref document: 19900715

Kind code of ref document: T

REF Corresponds to:

Ref document number: 3763377

Country of ref document: DE

Date of ref document: 19900802

ITF It: translation for a ep patent filed

Owner name: CALVANI SALVI E VERONELLI S.R.L.

ET Fr: translation filed
GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
ITTA It: last paid annual fee
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
REG Reference to a national code

Ref country code: GR

Ref legal event code: FG4A

Free format text: 3003005

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19940217

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19940309

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19940318

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19940329

Year of fee payment: 8

Ref country code: AT

Payment date: 19940329

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GR

Payment date: 19940330

Year of fee payment: 8

Ref country code: ES

Payment date: 19940330

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19940331

Year of fee payment: 8

Ref country code: LU

Payment date: 19940331

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 19940413

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19940420

Year of fee payment: 8

EPTA Lu: last paid annual fee
EAL Se: european patent in force in sweden

Ref document number: 87103236.3

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19950306

Ref country code: GB

Effective date: 19950306

Ref country code: AT

Effective date: 19950306

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19950307

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19950307

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19950331

Ref country code: CH

Effective date: 19950331

Ref country code: BE

Effective date: 19950331

BERE Be: lapsed

Owner name: CARBORUNDUM SCHLEIFMITTELWERKE G.M.B.H.

Effective date: 19950331

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 19950930

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19951001

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19950306

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19951130

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

Ref country code: GR

Ref legal event code: MM2A

Free format text: 3003005

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 19951001

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19951201

EUG Se: european patent has lapsed

Ref document number: 87103236.3

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 19990201

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050306