EP1088901B1 - Verfahren zur Wärmebehandlung metallischer Werkstücke - Google Patents
Verfahren zur Wärmebehandlung metallischer Werkstücke Download PDFInfo
- Publication number
- EP1088901B1 EP1088901B1 EP99118920A EP99118920A EP1088901B1 EP 1088901 B1 EP1088901 B1 EP 1088901B1 EP 99118920 A EP99118920 A EP 99118920A EP 99118920 A EP99118920 A EP 99118920A EP 1088901 B1 EP1088901 B1 EP 1088901B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- supply voltage
- quenching
- fan
- pressure
- phase motor
- 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.)
- Expired - Lifetime
Links
- 238000000034 method Methods 0.000 title claims description 21
- 238000007669 thermal treatment Methods 0.000 title claims 2
- 238000010791 quenching Methods 0.000 claims abstract description 42
- 230000000171 quenching effect Effects 0.000 claims abstract description 40
- 239000000112 cooling gas Substances 0.000 claims abstract description 21
- 239000007789 gas Substances 0.000 claims description 10
- 230000000977 initiatory effect Effects 0.000 claims description 2
- 238000013022 venting Methods 0.000 claims 1
- 238000001816 cooling Methods 0.000 description 9
- 238000010438 heat treatment Methods 0.000 description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000005255 carburizing Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 208000032544 Cicatrix Diseases 0.000 description 1
- 206010039580 Scar Diseases 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000005256 carbonitriding Methods 0.000 description 1
- 230000001364 causal effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000006735 deficit Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 208000014745 severe cutaneous adverse reaction Diseases 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
- C21D1/767—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material with forced gas circulation; Reheating thereof
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0006—Details, accessories not peculiar to any of the following furnaces
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/56—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering characterised by the quenching agents
- C21D1/613—Gases; Liquefied or solidified normally gaseous material
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
- C21D1/773—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material under reduced pressure or vacuum
Definitions
- Figure 2 shows corresponding measurement curves with and without cooling Use of the invention.
- this invention is for this Particularly suitable for use.
Description
Claims (9)
- Verfahren zur Wärmebehandlung metallischer Werkstücke, bei dem durch einen Ventilator ein Kühlgasstrom in einer evakuierbaren Abschreckkammer eines Ein- oder Mehrkammerofens zum Abschrecken der Werkstücke erzeugt wird, wobei der Ventilator durch einen Drehstrommotor angetrieben wird, der oberhalb eines hinsichtlich seiner Motorleistung bestimmten Mindestdrucks in der Abschreckkammer mit einer vorgegebenen Versorgungsspannung betrieben wird,
dadurch gekennzeichnet, daß der Ventilator bei einem Druck in der Abschreckkammer gestartet wird, der geringer als der Mindestdruck ist, wobei der Drehstrommotor bis zum Erreichen des Mindestdrucks in der Abschreckkammer mit einer zweiten, geringeren Versorgungsspannung betrieben wird. - Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß am Drehstrommotor die Netzspannung angelegt und durch einen Transformator von der höheren auf die niedrigere Versorgungsspannung und umgekehrt herab- bzw. heraufgesetzt wird.
- Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Drehstrommotor oberhalb des Mindestdrucks mit einer Versorgungsspannung von ca. 400 V und unterhalb des Mindestdrucks mit einer Versorgungsspannung von ca. 230 V betrieben wird.
- Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die am Drehstrommotor anliegende Versorgungsspannung in Abhängigkeit von dem in der Abschreckkammer herrschenden Druck und/oder der durch den Drehstrommotor fließenden Stromstärke umgeschaltet wird.
- Verfahren nach einem der Ansprüche 1 bis 4, gekennzeichnet durch einen Mindestdruck im Bereich von 500 - 1200 mbar.
- Verfahren nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß der Drehstrommotor mit Wasser gekühlt wird.
- Verfahren nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die Drehzahl des Ventilators oberhalb des Mindestdrucks in Abhängigkeit von der gewünschten Kühlgasgeschwindigkeit variiert wird.
- Verfahren nach einem der vorherigen Ansprüchen, dadurch gekennzeichnet, daß der Ventilator bei Drücken in der Abschreckkammer von bis zu 40 bar betrieben wird.
- Verfahren nach einem der Ansprüche 1 bis 8, gekennzeichnet durch die nachfolgenden Verfahrensschritte zum Abschrecken der Werkstückea) Einleiten der Gasabschreckung durch Anlaufen des Drehstrommotors des Ventilators bei einem Druck unterhalb von 750 mbar mit einer Spannung, die geringer als die Nennversorgungsspannung des Motors, vorzugsweise zwischen 80% und 40% der Nennversorungsspannung, ist,b) Hochlaufen des Ventilators auf Nenndrehzahl,c) Fluten der Abschreckkammer mit dem Abschreckgas und Einstellen des Abschreckdrucks in der Abschreckkammer auf einen Wert zwischen 1 und 40 bar,d) im wesentlichen gleichzeitige Umschaltung der Versorgungsspannung auf die Nennversorgungsspannung des Motors bei Erreichen eines Drucks > 750 mbar in der Abschreckkammer, sowiee) nach Beendigung der Gasabschreckung Lüften der Abschreckkammer auf Atmosphärendruck und Entnehmen der Werkstücke.
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE59903032T DE59903032D1 (de) | 1999-09-24 | 1999-09-24 | Verfahren zur Wärmebehandlung metallischer Werkstücke |
AT99118920T ATE225862T1 (de) | 1999-09-24 | 1999-09-24 | Verfahren zur wärmebehandlung metallischer werkstücke |
EP99118920A EP1088901B1 (de) | 1999-09-24 | 1999-09-24 | Verfahren zur Wärmebehandlung metallischer Werkstücke |
ES99118920T ES2184376T3 (es) | 1999-09-24 | 1999-09-24 | Procedimiento para el tratamiento termico de piezas de trabajo metalicas. |
US09/653,993 US6428742B1 (en) | 1999-09-24 | 2000-09-01 | Method for heat-treating metallic workpieces |
CA002341152A CA2341152C (en) | 1999-09-24 | 2001-03-21 | Method for heat-treating metallic workpieces |
JP2001096006A JP5178975B2 (ja) | 1999-09-24 | 2001-03-29 | 金属加工物の熱処理方法 |
CN01112301.XA CN1227378C (zh) | 1999-09-24 | 2001-04-02 | 金属工件的热处理方法 |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP99118920A EP1088901B1 (de) | 1999-09-24 | 1999-09-24 | Verfahren zur Wärmebehandlung metallischer Werkstücke |
CA002341152A CA2341152C (en) | 1999-09-24 | 2001-03-21 | Method for heat-treating metallic workpieces |
JP2001096006A JP5178975B2 (ja) | 1999-09-24 | 2001-03-29 | 金属加工物の熱処理方法 |
CN01112301.XA CN1227378C (zh) | 1999-09-24 | 2001-04-02 | 金属工件的热处理方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1088901A1 EP1088901A1 (de) | 2001-04-04 |
EP1088901B1 true EP1088901B1 (de) | 2002-10-09 |
Family
ID=27427686
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99118920A Expired - Lifetime EP1088901B1 (de) | 1999-09-24 | 1999-09-24 | Verfahren zur Wärmebehandlung metallischer Werkstücke |
Country Status (8)
Country | Link |
---|---|
US (1) | US6428742B1 (de) |
EP (1) | EP1088901B1 (de) |
JP (1) | JP5178975B2 (de) |
CN (1) | CN1227378C (de) |
AT (1) | ATE225862T1 (de) |
CA (1) | CA2341152C (de) |
DE (1) | DE59903032D1 (de) |
ES (1) | ES2184376T3 (de) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2844809B1 (fr) * | 2002-09-20 | 2007-06-29 | Air Liquide | Procede de refroidissement rapide de pieces par transfert convectif et radiatif |
US7189352B2 (en) | 2003-01-14 | 2007-03-13 | Medtronic, Inc. | Extracorporeal blood circuit priming system and method |
US7335334B2 (en) * | 2003-01-14 | 2008-02-26 | Medtronic, Inc. | Active air removal from an extracorporeal blood circuit |
US7201870B2 (en) * | 2003-01-14 | 2007-04-10 | Medtronic, Inc. | Active air removal system operating modes of an extracorporeal blood circuit |
DE102005017906B4 (de) * | 2005-04-18 | 2008-06-05 | Ipsen International Gmbh | Wärmebehandlung metallischer Werkstücke |
JP5407281B2 (ja) * | 2008-11-04 | 2014-02-05 | トヨタ自動車株式会社 | 熱処理方法 |
DE102009000201B4 (de) * | 2009-01-14 | 2018-06-21 | Robert Bosch Gmbh | Chargiergestell sowie Abschreckvorrichtung mit Chargiergestell |
CN101935745B (zh) * | 2010-08-05 | 2011-11-30 | 山西鑫博瑞科技有限公司 | 一种煤截齿的热处理装置及热处理方法 |
FR3001229B1 (fr) * | 2013-01-23 | 2015-10-30 | Ecm Technologies | Cellule de trempe sous gaz |
CN107557553A (zh) * | 2017-08-07 | 2018-01-09 | 安徽盛美金属科技有限公司 | 一种金属板件热处理装置 |
US11053560B2 (en) | 2018-08-24 | 2021-07-06 | William R. Jones | High pressure rapid gas quenching vacuum furnace utilizing an isolation transformer in the blower motor power system to eliminate ground faults from electrical gas ionization |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE649125C (de) * | 1937-08-16 | Bbc Brown Boveri & Cie | Verfahren zum unterbrechungslosen asynchronen Anlassen von Wechselstrommaschinen | |
DE200995C (de) * | 1907-06-13 | |||
US4141539A (en) * | 1977-11-03 | 1979-02-27 | Alco Standard Corporation | Heat treating furnace with load control for fan motor |
JPS6126722A (ja) * | 1984-07-18 | 1986-02-06 | Ishikawajima Harima Heavy Ind Co Ltd | 衝風冷却式真空熱処理炉 |
JPS6160819A (ja) * | 1984-08-29 | 1986-03-28 | Shimadzu Corp | 焼入れ冷却方法 |
DE3736501C1 (de) * | 1987-10-28 | 1988-06-09 | Degussa | Verfahren zur Waermebehandlung metallischer Werkstuecke |
JPH0433589A (ja) * | 1990-05-28 | 1992-02-04 | Fuji Electric Co Ltd | モータの速度制御方法 |
JPH06189586A (ja) * | 1992-10-15 | 1994-07-08 | Oki Electric Ind Co Ltd | 冷却ファン制御方法及びそれに用いる回路 |
US5478985A (en) * | 1993-09-20 | 1995-12-26 | Surface Combustion, Inc. | Heat treat furnace with multi-bar high convective gas quench |
AT405190B (de) * | 1996-03-29 | 1999-06-25 | Ald Aichelin Ges M B H | Verfahren und vorrichtung zur wärmebehandlung metallischer werkstücke |
JPH10183236A (ja) * | 1996-12-25 | 1998-07-14 | Shimazu Mekutemu Kk | 真空熱処理炉 |
JP4131588B2 (ja) * | 1998-07-29 | 2008-08-13 | 三洋電機株式会社 | 直流電動機の制御装置 |
-
1999
- 1999-09-24 DE DE59903032T patent/DE59903032D1/de not_active Expired - Lifetime
- 1999-09-24 EP EP99118920A patent/EP1088901B1/de not_active Expired - Lifetime
- 1999-09-24 ES ES99118920T patent/ES2184376T3/es not_active Expired - Lifetime
- 1999-09-24 AT AT99118920T patent/ATE225862T1/de active
-
2000
- 2000-09-01 US US09/653,993 patent/US6428742B1/en not_active Expired - Lifetime
-
2001
- 2001-03-21 CA CA002341152A patent/CA2341152C/en not_active Expired - Fee Related
- 2001-03-29 JP JP2001096006A patent/JP5178975B2/ja not_active Expired - Fee Related
- 2001-04-02 CN CN01112301.XA patent/CN1227378C/zh not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
CN1227378C (zh) | 2005-11-16 |
EP1088901A1 (de) | 2001-04-04 |
JP2002294333A (ja) | 2002-10-09 |
CN1377978A (zh) | 2002-11-06 |
ATE225862T1 (de) | 2002-10-15 |
CA2341152C (en) | 2009-09-01 |
JP5178975B2 (ja) | 2013-04-10 |
US6428742B1 (en) | 2002-08-06 |
CA2341152A1 (en) | 2002-09-21 |
DE59903032D1 (de) | 2002-11-14 |
ES2184376T3 (es) | 2003-04-01 |
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