CN1096906C - Metal die device, die-casting method and die-cast articles - Google Patents
Metal die device, die-casting method and die-cast articles Download PDFInfo
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- CN1096906C CN1096906C CN99122854A CN99122854A CN1096906C CN 1096906 C CN1096906 C CN 1096906C CN 99122854 A CN99122854 A CN 99122854A CN 99122854 A CN99122854 A CN 99122854A CN 1096906 C CN1096906 C CN 1096906C
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/20—Accessories: Details
- B22D17/22—Dies; Die plates; Die supports; Cooling equipment for dies; Accessories for loosening and ejecting castings from dies
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/08—Cold chamber machines, i.e. with unheated press chamber into which molten metal is ladled
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/20—Accessories: Details
- B22D17/32—Controlling equipment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D21/00—Casting non-ferrous metals or metallic compounds so far as their metallurgical properties are of importance for the casting procedure; Selection of compositions therefor
- B22D21/002—Castings of light metals
- B22D21/007—Castings of light metals with low melting point, e.g. Al 659 degrees C, Mg 650 degrees C
Abstract
The present invention provides a kind of metallic mold scheme and the die casting method for magnesium alloy using the same that the metallic mold scheme is applied to die casting for magnesium alloy or metal injection molding. The invention is characterized that it provides a plurality of vertical gates and configured with horizontal runners from vertical runners to each gates; and, the distances of non-gating portion between neighbored gates are set to under 10 mm except that the product design was not allowed for this setting. The die casting method using the disclosed metallic mold scheme can be applied to thin-wall die casting, especially for the thin-wall die casting with thickness under 1.5 mm or for the alloy casting containing silicon, rare earth elements, calcium. The die casting product from the invented method will have no wrinkles, surface cracks, insufficient filling, and without mold adherence.
Description
Technical field
The present invention is the metal pattern method of closing metal injection mouldings such as the die casting of a kind of suitable what magnesium alloy of what or thixotropy molding (thixomouldirg) method for making, adopt the pressure casting method and the die cast product of this metal die scheme, more specifically, be to close a kind of framework that adopts what fabricator electrical article of what, the metal pattern method of desired casting thin-wall parts such as the various container parts of automobile, by adopting the pressure casting method of this metal pattern method, for example can realize the pressure casting method and the die cast product of the magnesium alloy that minimum wall thickness (MINI W.) 1.5mm is following.
Background technology
Again, the present invention is pressure casting method and the die cast product that closes the magnesium alloy of a kind of room temperature strength of what and elevated temperature strength excellence, more specifically, be to close a kind of pressure casting method and die cast product that also has the magnesium alloy of abundant intensity at central desired high-temperatures to 523K of lightweight such as car engine parts of what.
In recent years, resin material or light metal material are used in the increase in demand of light material gradually.But, resin material is generally to use repeatedly than difficulty and problem is arranged in earth environmental protection, at this problem, by the what metal material is generally to utilize more again, therefore, the framework of family's electrical article, the manufactured materials of the various container parts of automobile etc. changes to the light metal of magnesium based material or aluminium based material etc. from resin material, particularly in compact trend, not only has rigidity as metal, and the also minimum light weight magnesium based material of density is gazed in practical light metal, forms the trend of being gazed at material with automobile or portable family electrical article.Particularly, in the framework of just carrying commodity of notes type PC or digital camera, MD walkman (portable stereo walkman), video camera etc., be required below the wall thickness 1.5mm, particularly the following goods of 1.2mm.
And in the automobile industry, by the consciousness raising of what earth environmental protection, and enhancing improves the requirement of the fuel cost of automobile, thereby strong request exploitation automobile light material.Magnesium alloy density in now by the metal material of practicality is minimum, strong expectation conduct automobile light material from now on, and demand enlarges.Particularly, after this developed the alloy of suitable what requirement ability to the interpolation silicon of the purposes such as engine parts of the hear resistance of about 473K, creep resistant, AS41 alloy (Mg-4Al-1Si-0.2Mn) for example, add the alloy of rare earth element, AE42 alloy (Mg-4Al-2RE-0.2Mn) for example, and then developed, proposed to add the alloy (Japanese kokai publication hei 6-25790 communique) of calcium recently, add alloy (the Japanese kokai publication hei 6-200348 communique of calcium and rare earth element, Te Kaiping 7-11347 communique), believe that purposes can enlarge.
Yet, unique difficult problems such as in the die casting of magnesium alloy or metal injection moulding, having scab, fill bad, hot tearing or draw, casting lap, shrinkage cavity etc. often take place.Particularly, in desired in recent years thin thing casting, or in alloy use that comprises silicon, rare earth element or calcium etc., the trend that enlarges these problems is arranged, relative, guarantee that epochmaking metal pattern method on the quality of die casting etc. only is to repeat in the past the experience trial and error method on prolonging, and does not establish the design guidelines of the metal pattern method of system closing what.
Summary of the invention
The problem that the present invention's clang what conventional art is had is finished, the present invention with provide a kind of at magnesium alloy die casting and metal injection moulding in do not produce scab, fill bad, hot tearing or draw, the metal pattern method of casting lap, shrinkage cavity etc., adopt the pressure casting method and the die cast product of this kind metal pattern method, and the metal pattern method that adopts when the alloy that a kind of casting thin-wall or use comprise silicon, rare earth element or calcium particularly is provided, adopt the pressure casting method of this kind metal pattern method and die cast product as problem.
The inventor etc. have carried out all research repeatedly in order to finish above-mentioned problem, found that, there are several rules in suitableization of closing the metal pattern method that what adopts in the die casting of magnesium alloy and metal injection moulding.That is, vital point when the die casting of magnesium alloy and metal injection moulding is: in die cavity, (1) makes and do not have disorderly and metal liquid stream smoothly, (2) do not reduce flow velocity, (3) are constant speed as much as possible always, and (4) do not upset mutual flowing, (5) loading mould cavity ground flows into rapidly, and adopt to realize the metal pattern method of these conditions, and and injecting condition and/or metal pattern condition are suitably changed, can complete inhibition scab, fill bad, hot tearing or draw, casting lap, shrinkage cavity etc.
That is metal pattern method of the present invention is to be suitable for the die casting of what magnesium alloy or the metal pattern method of metal injection moulding, it is characterized in that,
Set several cast gates, and direct runner is set from down gate to each cast gate, and
With the distance of the non-gate portions between adjacent cast gate, except unallowed situation is gone up in the goods design, be set at below the 10mm.
Metal pattern method of the present invention again also comprises following feature,
With down gate to each runner volume settings of each cast gate is identical,
The basal area of each cast gate is set for proportional to the product volume that should fill from this cast gate,
Keep identical or continuously minimizing by the flow direction of metal liquation down gate to the total basal area of each runner of each cast gate, perhaps,
The shape of runner is set more than the R5 as far as possible, so that metal liquid stream becomes liquid stream smoothly.
The pressure casting method of magnesium alloy of the present invention is characterized in that,
Adopt above-mentioned metal pattern method,
The melt temperature of magnesium alloy is remained on 580 to 750 ℃,
To be set at for 1/100 to 10/100 second to the filling speed of die cavity, and
When using cold house's formula die casting machine, the supercharging after filling is set at 200kgf/cm
2More than.
The pressure casting method of magnesium alloy of the present invention is characterized in that,
Adopt above-mentioned metal pattern method,
The metal pattern temperature is remained on 150 to 350 ℃,
Make more than the low 10K of temperature of surface temperature than periphery of the metal pattern at the die cavity position of easy generation draw on the die-cast product,
Air pressure settings in the metal pattern during with die casting is below the 100mmHg, and
As additive, make to be selected from least a in graphite, BN, waterglass, mica, silica gel, magnesium hydroxide and the magnesia to the releasing agent of coating what metal pattern inner face.
More satisfactoryly be, the pressure casting method of magnesium alloy of the present invention, it is levied and is,
Adopt above-mentioned metal pattern method,
The melt temperature of magnesium alloy is remained on 580 to 750 ℃,
To be set at for 1/100 to 10/100 second to the filling speed of die cavity,
When using cold house's formula die casting machine, the supercharging after filling is set at 200kgf/cm
2More than,
The metal pattern temperature is remained on 150 to 350 ℃,
Make more than the low 10K of temperature of surface temperature than periphery of the metal pattern at the die cavity position of easy generation draw on the die-cast product,
Air pressure settings in the metal pattern during with die casting is below the 100mmHg, and
As additive, use to be selected from least a in graphite, BN, waterglass, mica, silica gel, magnesium hydroxide and the magnesia to the releasing agent of coating what metal pattern inner face.
And then when the die cast product of the magnesium alloy that obtains room temperature strength and elevated temperature strength excellence, the pressure casting method of magnesium alloy of the present invention is to use as magnesium alloy and contains
I) aluminium 1 to 10 weight %,
Ii) be selected from by rare earth element 0.2 to 5 weight %, calcium 0.02 to 5 weight %, and at least a in the group that constituted of silicon 0.2 to 10 weight %, and
Iii) below the manganese 1.5 weight %, all the other are by magnesium and magnesium alloy that unavoidable impurities constituted.
Magnesium alloy pressure-casting goods of the present invention are the magnesium alloy pressure-casting goods that adopt above-mentioned metal pattern method can make with above-mentioned pressure casting method.These goods have and do not have casting lap, face crack, filling are bad, the advantage of metal pattern scab
Below be described in detail in the pressure casting method of the present invention the magnesium alloy that is suitable for and form, be suitable for the die casting of what magnesium alloy or the metal pattern method of metal injection moulding, adopt the pressure casting method of this metal pattern method and die cast product etc.
The magnesium alloy that can cast with pressure casting method of the present invention, but so long as the magnesium alloy of die casting is then any all passable, for example can use MD1A, MD1B, MD1D, MD2A, MD2B, MD3A etc.
But with in the lightweight of car engine part etc., even the high temperature to the desired 523K, the magnesium alloy pressure-casting goods that also have abundant intensity are during as purpose, and use contains
I) aluminium 1 to 10 weight %,
Ii) be selected from by rare earth element 0.2 to 5 weight %, calcium 0.02 to 5 weight %, and at least a in the group that constituted of silicon 0.2 to 10 weight %, and
Iii) below the manganese 1.5 weight %, all the other are with comparatively desirable by magnesium and magnesium alloy that unavoidable impurities was constituted.
In metal pattern method of the present invention, be precondition so that several cast gates to be set.In having the metal pattern method of several cast gates, at first, for flow velocity and the molten metal of not upsetting molten metal flows, must direct runner be set at down gate to each cast gate like this, promptly down gate to each cast gate must directly connect with each runner respectively.The mobile homogenising that becomes of the molten metal in each runner, and can set simultaneously the cast gate basal area that adapts to article shape, must establish two above cast gates, but, the final cast gate number and the basal area of each cast gate determined by product size (Metal Melting liquid measure) and article shape, and wait and stipulate according to size, metal pattern cost, the material shrinkage factor of metal pattern.But,, make many cast gates and each cast gate attenuated comparatively desirable according to article shape only with metal die.
The crossing current road that so sets and each cast gate as above-mentioned, in order not upset as far as possible, do not suppress can fill the what die cavity under the flowing of molten metal, then should be with some basic design conditions as essential or comparatively ideal condition.That is, fill the what die cavity in order not upset flowing of molten metal, then be all ideal mutually will volume to become mutually from down gate to each runner that is divided into plural each cast gate, and the basal area of each cast gate is designed to the product volume of filling from cast gate to desire proportional, fill the what goods molten metal comparatively desirable simultaneously from each cast gate.
Again in order not reduce the flow velocity of molten metal, the total basal area of each runner that will be from down gate to cast gate maintains identical or reduces comparatively desirable continuously at the flow direction of molten metal.The shape of runner is set more than the R5 as far as possible, so that the molten metal energy of flow is smooth and easy.
As mentioned above, by what molten metal is filled the what die cavity from cast gate always apace, and between each cast gate, be easy to generate cold shut, therefore if when adopting metal pattern method of the present invention, must be with the distance of the non-gate portions between adjacent cast gate, except unallowed situation is gone up in the goods design, be set at below the 10mm.
And according to the R of runner, the vector beyond the vertical what gate land will produce the width of each cast gate of what.So it is, slack-off in the cast gate end in the VELOCITY DISTRIBUTION of the width of cast gate to the molten metal speed of cast gate vertical direction.The same for VELOCITY DISTRIBUTION is become, for example actual measurement or molten metal flow to calculate to go up and wish to reach in the 1m/s.Along with the speed difference in this VELOCITY DISTRIBUTION more near zero, be easy to generate cold shut between previous described cast gate by what, so the trend that the molten metal of cast gate end flows must be studied fully.
Adopt above-mentioned metal pattern method and implement in the injecting condition of pressure casting method of the present invention, the molten metal temperature is arranged.During 580 ℃ of molten metal temperature less thaies in melting furnace, then mobile the reduction, and have problems to the fillibility of metal pattern.On the other hand,, then when keeping molten metal, increase the danger of catching fire, can increase again, therefore hot tearing or draw take place easily from the shrinkage factor of molten metal during solidify if surpass 750 ℃.So the melt temperature of alloy should keep 580 to 750 ℃ of whats, more satisfactory is to remain on 650 to 710 ℃.
In the injecting condition of pressure casting method of the present invention, the filling speed of oriented die cavity.The latent heat of solidification of general magnesium alloy is little, thereby recommends should give the raising injection speed.Particularly because of producing compound crackle taking place easily in the slow over the ground grain part of solidifying phase by the what magnesium alloy, therefore must apply casting pressure in that foundry goods is region-wide.So must consider casting speed and balance from the cooling of metal pattern, the filling speed on the experience in the metal pattern die cavity was set at for 1/100 to 10/100 second, more satisfactory is that be necessary condition 1/100 to 5/100 second.In order to satisfy this kind condition, injection speed is set at more than the 2m/s, more satisfactory is more than the 3.5m/s, or gate velocity is set at more than the 30m/s, more satisfactory is more than the 50m/s.When the filling speed in the metal pattern die cavity is slower than 10/100 second, can have problems in the fillibility (filling bad) or the either direction of hot crackability.
When using cold house's formula die casting machine, the supercharging after the filling is arranged in the injecting condition of pressure casting method of the present invention.Must apply supercharging immediately again after the filling in the metal pattern die cavity, bad to prevent to fill, and the hot tearing when suppressing to solidify or cool off, the generation of draw.The supercharging condition of this moment is 200kgf/cm
2More than, more satisfactory is 400kg/cm
2More than.When not applying this kind supercharging, can produce and fill badly, or can crack at the All Ranges of the wall thickness change portion of foundry goods.
Above die casting injecting condition is interrelated, lacks a kind of condition in this kind condition, all can't obtain the sound thin-section casting of magnesium alloy.Say on the contrary, adopt above-mentioned metal pattern method and implement, by satisfying this three kinds of injecting conditions, that is,
The molten metal temperature of magnesium alloy is remained on 580 to 750 ℃,
To be set at for 1/100 to 10/100 second to the filling speed of die cavity, and
When using cold house's formula die casting machine, the supercharging after filling is set at 200kgf/cm
2Above condition, can cast do not have casting lap, face crack, filling are bad, the magnesium alloy die casting of metal pattern scab.
Adopt above-mentioned metal pattern method and implement in the metal pattern condition of pressure casting method of the present invention, the metal pattern temperature is arranged.During less than 150 ℃, the fillibility to molten metal on the experience is brought obstacle in the metal pattern temperature, even or can fill, also can on the superficiality of casting lap etc., throw into question.In addition, when surpassing 350 ℃, be easy to generate draw or hot tearing by what retarded coagulation speed.Therefore the metal pattern temperature is remained on 150 to 350 ℃, more satisfactory for remaining on 180 to 280 ℃.
In the metal die condition of pressure casting method of the present invention, local cooling is arranged.According to the shape of foundry goods, the position of easy generation slight crack is arranged in shape in thickness sudden turn of events portion etc.Under these situations, except the metal pattern temperature controlling of above-mentioned integral body, also must do local temperature control.For this temperature control, then can take the refrigerant path to be set at the necessary position of metal pattern, and the method that the refrigerant of circulating water, oily air etc. carries out local cooling in this path is perhaps carried out the local method of cooling off etc. by blowing release agent spraying or air when opening metal pattern.Metal pattern must be needed in a word more than the surface temperature cooling 10K of surface temperature than periphery at local position of cooling off, more satisfactory for cooling off more than the 20K, the position of easy generation draw is preferentially solidified to prevent draw.
In the metal die condition of pressure casting method of the present invention, the decompression in the metal pattern is arranged.In order to help molten metal in die cavity, to fill, the disorder in order to prevent to flow simultaneously by the molten metal that air produced in the metal pattern, the decompression in the metal pattern is necessary.In order to reach this purpose, the air pressure settings in the metal pattern in the time of must be with the injection of molten metal is below the 100mmHg, and more satisfactory is below the 50mmHg.
In the metal die condition of pressure casting method of the present invention, the releasing agent of coating what metal pattern inner face is arranged.Close the cooling condition of what, be not only the temperature conditions of metal pattern in order to solidify, but and the heat insulation effect of nationality releasing agent come retarded coagulation and casting pressure worked.In order to reach this purpose, as the additive of releasing agent, it is effective using and being selected from least a in the group that is made of graphite, BN, waterglass, mica, silica gel, magnesium hydroxide and magnesia.
Above metal pattern condition is interrelated, but metal pattern temperature particular importance.When the die cavity position that draw takes place does not easily exist, do not need local cooling on the die-cast product, local cooling this moment can by of the present invention constitute in the necessary condition deleted.According to die cavity shape and die cast product shape, though the decompression in the metal pattern and the additive of releasing agent might not be necessary necessary conditions, and constitute necessary condition with this kind and can obtain better result, so more satisfactory.
In the present invention, adopt above-mentioned metal pattern method and implemented, by satisfying these four kinds of metal pattern conditions, promptly
The metal pattern temperature is remained on 150 to 350 ℃,
The surface temperature of metal pattern at the die cavity position of draw will take place on the die-cast product easily, reduce more than the 10K than periphery,
Air pressure settings in the metal pattern during with die-cast is below the 100mmHg, and
As additive to the releasing agent of coating what metal pattern inner face, use is selected from least a in the group that is made of graphite, BN, waterglass, mica, silica gel, magnesium hydroxide and magnesia, just can cast do not have casting lap, face crack, filling are bad, the magnesium alloy die casting of metal pattern scab.
Above-mentioned metal pattern method of the present invention, adopt the pressure casting method of this metal pattern method, to the what casting thin-wall, particularly, casting thin-wall below 1.5mm or the casting that contains the alloy of silicon, rare earth element, calcium are effectively, can obtain there is not casting lap, face crack, filling are bad, the die cast product of metal pattern scab.
The specific embodiment
Followingly specifically describe the present invention according to embodiment and comparative example.
Embodiment 1 and comparative example 1 to 6
The metal pattern method is to adopt:
Set four cast gates, and to each cast gate direct runner be set from down gate,
The distance of the non-gate portions between the cast gate of adjacency is set at 5mm,
With its cast gate to each runner volume settings of each cast gate is identical,
The basal area of each cast gate is set for proportional to the product volume that should fill from its cast gate,
Its cast gate to the total basal area of each runner of each cast gate is kept at the flow direction of molten metal identical,
With the shape set of runner is more than the R15.
Adopt above-mentioned metal pattern method, use AZ91 (Mg-9Al-0.7Zn-0.2Mn) alloy, cold house's formula die casting machine uses 650 tons of machines of Ube corporate system, the alloy melt temperature is set at 680 ℃, to be set at for 5/100 second to the filling speed of die cavity, the supercharging after filling will be set at 300kgf/cm
2The metal pattern temperature is set at 250 ℃, air pressure settings in the metal pattern during with die casting is 100mmHg, and is releasing agent at metal pattern inner face coating talcum, and implements the casting of preproduction of the notes type PC housing (products thickness 0.8mm) of A4 size.The result is as shown in table 1 in casting.The metal pattern method is changed (the metal pattern method of not putting down in writing what table 1 is still kept above-mentioned and variation) as shown in table 1ly and implement comparative example 1 to 6.The result is as shown in table 1 in these castings.
Table 1
Embodiment 2
| The metal mould device that changes | The casting result | Judge | |
| Embodiment 1 comparative example 1 comparative example 2 comparative examples 3 comparative examples 4 comparative examples 5 comparative examples 6 embodiment 2 | Become 2 times of basal areas with a cast gate to be set at 1.5 times of total basal areas with runner a volumetric change of runner apart from 15mm to be set at 1.5 times of part of standards that R3 is set on the way in runner between standard gate one place's cast gate | Good to fill the bad comparative example 3 to 6 of bad filling be that all surface is poor slightly, and residual cold shut portion is good | Zero * * △ to zero △ to zero △ to zero △ to zero zero |
Use hot cell formula die casting machine, the molten metal temperature is set at 610 ℃, the supercharging after not implementing filling, all the other then implement casting similarly to Example 1.The result of casting is as shown in table 1.Embodiment 3
The metal pattern method that employing is adopted at embodiment 1, use the high Mg-5Al-3Ca-0.2Mn alloy of hot tearing sensitiveness, the Mg-5Al-4RE-0.2Mn-0.05Ca alloy, the Mg-5Al-2Si-0.5RE-0.2Mn alloy, or the Mg-9Al-2Ca-2RE-1Si-0.2Mn alloy, cold house's formula die casting machine uses 650 tons of machines of Ube corporate system, and the alloy melt temperature is set at 700 ℃, to be set at for 5/100 second to the filling speed of die cavity, the supercharging after filling will be set at 500kgf/cm
2, the metal pattern temperature is set at 200 ℃, the air pressure settings in the metal pattern during with die casting is 40mmHg, and with the size of 300mm * 300mm * 180mm of imitation auto parts, implements the casting of the box type preproduction of wall thickness 3mm.In all four kinds of die casting product, do not see hot tearing.Embodiment 4
For making die cast product become the shape of easy generation draw, wall thickness is varied to 10mm from 300mm part is set at four corners of the box type preproduction of embodiment 3.Use the Mg-5Al-4Ca-1RE-0.2Mn alloy, cast the preproduction of this shape in the same conditions as in Example 3, the result then at the edge part at wall thickness change position with about 10% probability generation draw, and scab takes place every 100 to 300 injections in the part that enters die cast product at cast gate.
Therefore, as the countermeasure of draw, when the metal pattern of wall thickness change portion partly is cooled to 230 ℃ (order is 20K with the difference of on every side metal pattern temperature), can suppress the generation of draw.
As the countermeasure of scab, when the releasing agent coating what that adds BN is cast in the part of above-mentioned generation scab, can suppress the generation of scab.And, replace BN, also can obtain equal effect when using graphite, waterglass, mica, silica gel, magnesium hydroxide or magnesia.
Adopt the pressure casting method of metal pattern method of the present invention, at casting thin-wall, the following casting thin-wall of 1.5mm or to contain in the alloy casting of silicon, rare earth element, calcium be effectively particularly, with high-quality and stably can obtain there is not casting lap, face crack, filling are bad, the die cast product of metal pattern scab.
Claims (17)
1. metal mould device, it is to be suitable for the die casting of what magnesium alloy or the metal mould device of metal injection moulding, it is characterized in that,
Set several cast gates, and be provided with direct runner from down gate to each cast gate, and
Distance with the non-gate portions between the adjacent gate is set at below the 10mm.
2. the described metal mould device of claim 1 is characterized in that it also comprises:
With down gate to the volume settings of each runner of each cast gate is identical,
The basal area of each cast gate is set for the product volume that should fill from this cast gate proportional,
Keep identical or continuously minimizing according to the flow direction of molten metal down gate to the total basal area of each runner of each cast gate, perhaps
The shape of runner is set more than the R5 as far as possible, so that molten metal stream becomes liquid stream smoothly.
3. the pressure casting method of a magnesium alloy is characterized in that,
Adopt claim 1 or 2 described metal mould devices,
The melt temperature of magnesium alloy is remained on 580 to 750 ℃,
To be set at 1/100 to 10/100 second to the filling speed of die cavity, and
When using cold house's formula die casting machine, the supercharging after filling is set at 200kgf/cm
2More than.
4. the pressure casting method of a magnesium alloy is characterized in that,
Adopt claim 1 or 2 described metal mould devices,
The metal pattern temperature is remained on 150 to 350 ℃,
Make more than the low 10K of temperature of surface temperature than periphery of the metal pattern at the die cavity position of easy generation draw on the die-cast product,
Air pressure settings in the metal pattern during with die casting is below the 100mmHg, and
As additive, use to be selected from least a in graphite, BN, waterglass, mica, silica gel, magnesium hydroxide and the magnesia to the releasing agent of coating what metal pattern inner face.
5. the described pressure casting method of claim 4 is characterized in that,
Adopt claim 1 or 2 described metal mould devices,
The melt temperature of magnesium alloy is remained on 580 to 750 ℃,
To be set at for 1/100 to 10/100 second to the filling speed of die cavity,
When using cold house's formula die casting machine, the supercharging after filling is set at 200kgf/cm
2More than,
The metal pattern temperature is remained on 150 to 350 ℃,
Make more than the low 10K of temperature of surface temperature than periphery of the metal pattern at the die cavity position of easy generation draw on the die-cast product,
Air pressure settings in the metal pattern during with die casting is below the 100mmHg, and
As additive, use to be selected from least a in graphite, BN, waterglass, mica, silica gel, magnesium hydroxide and the magnesia to the releasing agent of coating what metal pattern inner face.
6. the described pressure casting method of claim 3 is characterized in that, the casting wall thickness is the following die cast product of 1.5mm.
7. the described pressure casting method of claim 4 is characterized in that, the casting wall thickness is the following die cast product of 1.5mm.
8. the described pressure casting method of claim 5 is characterized in that, the casting wall thickness is the following die cast product of 1.5mm.
9. the described pressure casting method of claim 3 is characterized in that, uses the magnesium alloy that contains following component
I) aluminium 1 to 10 weight %,
Ii) be selected from rare earth element 0.2 to 5 weight %, calcium 0.02 to 5 weight %, and silicon 0.2 to 10 weight % at least a, and
Iii) below the manganese 1.5 weight %,
Surplus is magnesium and unavoidable impurities.
10. the described pressure casting method of claim 4 is characterized in that, uses the magnesium alloy that contains following component
I) aluminium 1 to 10 weight %,
Ii) be selected from rare earth element 0.2 to 5 weight %, calcium 0.02 to 5 weight %, and silicon 0.2 to 10 weight % at least a, and
Iii) below the manganese 1.5 weight %,
Surplus is magnesium and unavoidable impurities.
11. the described pressure casting method of claim 5 is characterized in that, uses the magnesium alloy that contains following component
I) aluminium 1 to 10 weight %,
Ii) be selected from rare earth element 0.2 to 5 weight %, calcium 0.02 to 5 weight %, and silicon 0.2 to 10 weight % at least a, and
Iii) below the manganese 1.5 weight %,
Surplus is magnesium and unavoidable impurities.
12. the described pressure casting method of claim 6 is characterized in that, uses the magnesium alloy that contains following component
I) aluminium 1 to 10 weight %,
Ii) be selected from rare earth element 0.2 to 5 weight %, calcium 0.02 to 5 weight %, and silicon 0.2 to 10 weight % at least a, and
Iii) below the manganese 1.5 weight %,
Surplus is magnesium and unavoidable impurities.
13. one kind can be with the magnesium alloy pressure-casting goods of the described pressure casting method manufacturing of claim 3.
14. one kind can be with the magnesium alloy pressure-casting goods of the described pressure casting method manufacturing of claim 4.
15. one kind can be with the magnesium alloy pressure-casting goods of the described pressure casting method manufacturing of claim 5.
16. one kind can be with the magnesium alloy pressure-casting goods of the described pressure casting method manufacturing of claim 6.
17. one kind can be with the magnesium alloy pressure-casting goods of the described pressure casting method manufacturing of claim 9.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP161334/1999 | 1999-06-08 | ||
| JP16133499A JP3534650B2 (en) | 1999-06-08 | 1999-06-08 | Die, die casting and die casting products |
| JP161334/99 | 1999-06-08 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1276276A CN1276276A (en) | 2000-12-13 |
| CN1096906C true CN1096906C (en) | 2002-12-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN99122854A Expired - Fee Related CN1096906C (en) | 1999-06-08 | 1999-11-30 | Metal die device, die-casting method and die-cast articles |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP3534650B2 (en) |
| KR (1) | KR100412071B1 (en) |
| CN (1) | CN1096906C (en) |
| TW (1) | TW407078B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100392139C (en) * | 2005-05-11 | 2008-06-04 | 江苏共昌轧辊有限公司 | Alloy half steel composite roll collar and preparation process thereof |
| CN101569925B (en) * | 2008-10-09 | 2011-02-02 | 福建工程学院 | Gating design method for die-casting formation of large thin-wall element with narrow flange |
| CN101505891B (en) * | 2006-08-18 | 2011-09-28 | 镁工泰克有限公司 | Combination of casting process and alloy composition |
| CN101456068B (en) * | 2007-12-14 | 2011-11-16 | 株式会社东芝 | Die for die casting, method of manufacturing cast product, and cast product |
| CN102549283A (en) * | 2009-09-29 | 2012-07-04 | Ntn株式会社 | Cage, anti-friction bearing, machine tool, and method of manufacturing cage |
| CN106862523A (en) * | 2017-02-14 | 2017-06-20 | 山东银光钰源轻金属精密成型有限公司 | A kind of C grades of Aluminum Alloy Used in Cars structural member die casting |
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| DE102008052062A1 (en) * | 2008-10-17 | 2010-04-22 | Dr.Ing.H.C.F.Porsche Aktiengesellschaft | Method for producing a frame-like structural component |
| CN102994839B (en) * | 2011-09-09 | 2015-06-10 | 江汉大学 | Heatproof casting magnesium alloy |
| CN102994838B (en) * | 2011-09-09 | 2015-06-10 | 江汉大学 | MgAlSi heat resistance magnesium alloy |
| CN102994836B (en) * | 2011-09-09 | 2015-01-07 | 江汉大学 | Tough magnesium alloy with high elongation rate |
| JP5768616B2 (en) * | 2011-09-20 | 2015-08-26 | トヨタ自動車株式会社 | Die casting equipment |
| CN103133856B (en) * | 2011-11-28 | 2015-08-26 | 上海龙胜实业有限公司 | A kind of structure having the thin-walled parts of inside opening |
| CN102618762B (en) * | 2012-04-13 | 2014-10-29 | 江汉大学 | Heat-resisting magnesium alloy |
| CN102618759B (en) * | 2012-04-13 | 2014-10-29 | 江汉大学 | Low-shrinkage magnesium alloy |
| BR112015011058B1 (en) | 2012-11-19 | 2020-01-07 | Sintokogio, Ltd. | SAND FOR CASTING MOLD, PROCESS FOR MANUFACTURING CAST FOR CASTING AND CORE FOR METAL CASTING |
| JP5852039B2 (en) * | 2013-03-29 | 2016-02-03 | 株式会社栗本鐵工所 | Heat-resistant magnesium alloy |
| CN103331432B (en) * | 2013-07-04 | 2015-06-17 | 上海交通大学 | Vacuum die casting method of rare earth-magnesium alloy |
| CN103722150B (en) * | 2013-12-30 | 2015-06-24 | 宁夏惠冶科技有限公司 | Magnesium alloy pressure casting integrated controlling and managing method |
| CN107052298A (en) * | 2017-02-14 | 2017-08-18 | 山东银光钰源轻金属精密成型有限公司 | A kind of sedan door outside plate aluminum alloy die-casting die |
| CN108856643B (en) * | 2018-09-19 | 2020-05-12 | 广东赛米克新材料有限公司 | Mold release agent for ultrathin magnesium alloy die castings in middle plate of 3C electronic product shell frame |
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| US5409631A (en) * | 1990-03-22 | 1995-04-25 | Ultradent Products | Dental bleaching compositions and methods for bleaching teeth surfaces |
| US5630464A (en) * | 1995-11-03 | 1997-05-20 | Spartan Light Metal Products, Inc. | Cold chamber magnesium pump assembly |
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| JP2604670B2 (en) * | 1992-05-22 | 1997-04-30 | 三井金属鉱業株式会社 | High strength magnesium alloy |
| JPH10263781A (en) * | 1997-03-24 | 1998-10-06 | Asahi Tec Corp | Die casting device for mg alloy |
| JPH1177240A (en) * | 1997-09-02 | 1999-03-23 | Matsushita Electric Ind Co Ltd | Casting metallic mold |
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- 1999-06-08 JP JP16133499A patent/JP3534650B2/en not_active Expired - Lifetime
- 1999-08-03 TW TW088113209A patent/TW407078B/en not_active IP Right Cessation
- 1999-08-06 KR KR10-1999-0032271A patent/KR100412071B1/en not_active IP Right Cessation
- 1999-11-30 CN CN99122854A patent/CN1096906C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5409631A (en) * | 1990-03-22 | 1995-04-25 | Ultradent Products | Dental bleaching compositions and methods for bleaching teeth surfaces |
| US5630464A (en) * | 1995-11-03 | 1997-05-20 | Spartan Light Metal Products, Inc. | Cold chamber magnesium pump assembly |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100392139C (en) * | 2005-05-11 | 2008-06-04 | 江苏共昌轧辊有限公司 | Alloy half steel composite roll collar and preparation process thereof |
| CN101505891B (en) * | 2006-08-18 | 2011-09-28 | 镁工泰克有限公司 | Combination of casting process and alloy composition |
| CN101456068B (en) * | 2007-12-14 | 2011-11-16 | 株式会社东芝 | Die for die casting, method of manufacturing cast product, and cast product |
| CN101569925B (en) * | 2008-10-09 | 2011-02-02 | 福建工程学院 | Gating design method for die-casting formation of large thin-wall element with narrow flange |
| CN102549283A (en) * | 2009-09-29 | 2012-07-04 | Ntn株式会社 | Cage, anti-friction bearing, machine tool, and method of manufacturing cage |
| CN106862523A (en) * | 2017-02-14 | 2017-06-20 | 山东银光钰源轻金属精密成型有限公司 | A kind of C grades of Aluminum Alloy Used in Cars structural member die casting |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20010005428A (en) | 2001-01-15 |
| JP2000343199A (en) | 2000-12-12 |
| KR100412071B1 (en) | 2003-12-31 |
| CN1276276A (en) | 2000-12-13 |
| JP3534650B2 (en) | 2004-06-07 |
| TW407078B (en) | 2000-10-01 |
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