CN1062793C - Method and device for semi-solid metal ejection formation - Google Patents
Method and device for semi-solid metal ejection formation Download PDFInfo
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- CN1062793C CN1062793C CN97120579A CN97120579A CN1062793C CN 1062793 C CN1062793 C CN 1062793C CN 97120579 A CN97120579 A CN 97120579A CN 97120579 A CN97120579 A CN 97120579A CN 1062793 C CN1062793 C CN 1062793C
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- semisolid slurry
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- liquid metal
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- 238000000034 method Methods 0.000 title claims abstract description 33
- 239000002184 metal Substances 0.000 title claims abstract description 23
- 239000007787 solid Substances 0.000 title abstract description 17
- 230000015572 biosynthetic process Effects 0.000 title abstract description 5
- 239000002002 slurry Substances 0.000 claims abstract description 77
- 229910001338 liquidmetal Inorganic materials 0.000 claims abstract description 44
- 239000007788 liquid Substances 0.000 claims abstract description 21
- 238000010008 shearing Methods 0.000 claims abstract description 7
- 238000001816 cooling Methods 0.000 claims description 19
- 239000007789 gas Substances 0.000 claims description 14
- 238000001746 injection moulding Methods 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 claims description 9
- 238000003756 stirring Methods 0.000 claims description 9
- 239000011796 hollow space material Substances 0.000 claims description 8
- 230000001681 protective effect Effects 0.000 claims description 8
- 239000012809 cooling fluid Substances 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 239000012056 semi-solid material Substances 0.000 claims description 5
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 4
- 230000006698 induction Effects 0.000 claims description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Substances N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 229910018503 SF6 Inorganic materials 0.000 claims description 2
- 229910052786 argon Inorganic materials 0.000 claims description 2
- 229910052757 nitrogen Inorganic materials 0.000 claims description 2
- 230000003647 oxidation Effects 0.000 claims description 2
- 238000007254 oxidation reaction Methods 0.000 claims description 2
- SFZCNBIFKDRMGX-UHFFFAOYSA-N sulfur hexafluoride Chemical compound FS(F)(F)(F)(F)F SFZCNBIFKDRMGX-UHFFFAOYSA-N 0.000 claims description 2
- 229960000909 sulfur hexafluoride Drugs 0.000 claims description 2
- 238000013019 agitation Methods 0.000 claims 1
- 230000036760 body temperature Effects 0.000 claims 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000013021 overheating Methods 0.000 abstract 4
- 229920000715 Mucilage Polymers 0.000 description 9
- 239000000853 adhesive Substances 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 8
- 239000007769 metal material Substances 0.000 description 8
- 238000005266 casting Methods 0.000 description 6
- 239000013078 crystal Substances 0.000 description 5
- 239000012530 fluid Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000004512 die casting Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 241000555268 Dendroides Species 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 235000019628 coolness Nutrition 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000013528 metallic particle Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
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Abstract
The present invention discloses a method and a device for semi-solid metal ejection formation. The method comprises the following steps: overheating liquid metal is generated, and shearing force is provided for the overheating liquid metal; in the shearing process, the overheating liquid metal is rapidly cooled, the metal exists in not only a solid state but also a liquid state, and semi-solid slurry is formed; the semi-solid slurry is kept to be uniformly stirred in the solid-liquid coexisting state; the semi-solid slurry is ejected into a mould by an ejector. The device for realizing the method comprises an overheating liquid metal generator. The generator is connected with a semi-solid slurry generator. The ejector which has the function of adjusting the temperature in a fine adjustment mode is connected with an outlet of the semi-solid slurry generator, and the other port is connected with the mould. The present invention is suitable for workpiece production in mass.
Description
The present invention relates to a kind of method of spraying die cast, particularly a kind of semi-solid-state metal sprays the die cast method.The invention still further relates to the employed device of this casting method.
Utilize the semi-solid material formation technology, improve the method for die cast product quality, well known, this technology is since the initial stage in the 1970's is delivered its theoretical foundation by Massachusetts Institute Technology (MIT), develop and many correlation techniques, mass-produced technical process is also gradually ripe.It has not only been kept, and traditional die casting speed is fast, the dimensional accuracy advantages of higher, has also reduced pore and the shrinkage cavity content in the product, therefore, can increase substantially mechanical performance of products, but reaches the requirement of clean shape casting and heat treatment foundry goods.
The United States Patent (USP) the 3rd of known technology such as MIT, 902, No. 544, a kind of liquid metal liquid with fusion is disclosed, be inducted in the mixing drum and constantly stir, and cool off, make the liquid metal in the mixing drum, shear action when mat stirs forms a kind of semi-solid mucilage gradually, cools off at last and forms a kind of ingot casting, but this ingot casting is when making workpiece, must again it be cut into littler ingot by required weight, reheat and deliver to die casting machine behind the required fraction solid and be shaped, because the ingot of this manufacture method is all solid state higher semisolid of fraction solid that is heated to, still keep solid shape when being sent to injection chamber with the mechanical arm clamping, contrast similar tradition and forge, therefore be called " thixotroping forging method " again (Thixoforging), but this technical process is obviously complicated.
In addition, United States Patent (USP) the 5th, 040, No. 589 disclosed technology are that metallic particles is heated to partially molten state through Jet forming machine, and impose cut into the semisolid mucilage after, push injection moulding with screw rod; United States Patent (USP) the 5th, 501, No. 266 disclosed technology are with the Jet forming machine of motlten metal through particular design, directly utilize material pipe and screw rod to impose to shear be cooled to semisolid after, push injection moulding with screw rod again; (Japan Patent discloses 1-170565 number except above-mentioned screw rod stirs as for the mode that stirs metal material, 1-178345 number, also make in this way for 1-192447 number), utilize blade to stir in addition (as United States Patent (USP) the 4th, 116, No. 423) and electromagnetic stirr (as United States Patent (USP) the 5th, 178, No. 204, the 5th, 219, No. 018) etc. mode; And utilize in the known technology that screw rod pushes above-mentioned, melt metal and semi-solid metal material are to push in the tube at same spiral to be moved, but motlten metal is cooled to solid-state needs to be cooled off fast, and semi-solid-state metal metering ejaculation is needed stablize samming, the temperature controlled condition difference that both are required, and the same heat transfer phenomenon that pushes tube will make said temperature be difficult to control and inapplicable production at the big discharge-amount workpiece of need.
The objective of the invention is to provide a kind of method and apparatus of semi-solid-state metal injection molding, this method is easy to control temperature and can not interferes with each other, and it is big that whole mucilage produces discharge-amount, is suitable for making large-scale workpiece, for this reason, the present invention also will provide a kind of device of implementing this method.
For reaching above-mentioned purpose, method of the present invention comprises following several steps: produce an overheated liquid metal earlier, and with this overheated liquid metal of protective gas protection; Provide a shearing to shear this overheated liquid metal, and in this shear history, cool off this overheated liquid metal fast, send this semisolid slurry then to forming a kind of semisolid slurry between its solid-liquid coexistence; Provide a device to hold above-mentioned semisolid slurry, and the samming of keeping this semisolid slurry is stirred between its solid-liquid coexistence; Utilize the ejaculation device that above-mentioned semisolid slurry is penetrated to a mould, form the semi-solid material foundry goods.
For realizing that said method will adopt special-purpose device, this apparatus features is: establish an overheated liquid metal generator in order to the molten metal material, one semisolid slurry generator and overheated liquid metal generator are connected, one has the semisolid slurry outlet linking of the ejaculation device and the semisolid slurry generator of fine tune temperature function, and one accepts the mould that penetrates the emitted semisolid slurry of device.
Because the quick cooling of the semisolid slurry generator of the second stage of said method, keeping even temperature with the ejaculation device of phase III is separately control, easier aspect temperature controlling, and can not interfere with each other, in the quick cold process of second stage, can form the trickle semisolid mucilage of crystal grain in a large number, samming through the phase III stirs work, can prepare the stable semisolid mucilage of better homogeneous, the preparation of the mucilage of second stage does not influence ejaculation, pressurize cooling and nozzle close from etc. forming process, so preparation semisolid mucilage that can be a large amount of in advance, treat phase III metering ejaculation, thereby be applicable to the production of heavy castings.For filling the difference of part explanation the present invention and conventional art, the division of will tabulating is as follows:
The present invention is described in further detail below in conjunction with embodiment and accompanying drawing thereof
Fig. 1 is that running concerns block diagram between each main component units of the present invention.
Fig. 2 is a device construction schematic diagram of the present invention.
Fig. 3 is the local structure enlarged drawing of Fig. 2.
With reference to Fig. 2, semi-solid metal ejection formation device proposed by the invention mainly includes: an overheated liquid metal generator 1 produces clean molten metal under the protective gas environment; One semisolid slurry generator 2, the discharging opening that is the metal generator 1 supplied with liquation is connected, in order to overheated liquid metal material under the state of fast cooling and disturbance fast, metal material is maintained between a solid-liquid coexistence, be liquid metal material from the temperature range that begins to solidify till solidify end, and produce the careful semisolid slurry material of a kind of crystal grain; One penetrates device 3, is and semisolid slurry outlet 201 linkings of semisolid slurry generator 2, and it has the fine tune temperature function, stablizes between uniform temperature zone in order to above-mentioned semisolid slurry is maintained one, and after treating that metering is penetrated, is solidified into workpiece in mould 4.
Key technology of the present invention is the semisolid slurry generator 2 of above-mentioned second stage, with the temperature of the ejaculation device 3 of phase III be separately control, make second with the phase III control temperature on, can not interfere with each other, and control individually easilier, and obtain the more careful semisolid slurry of a kind of crystal grain, and then the ejaculation device 3 of mat phase III, make the semisolid slurry can be under the condition of keeping between its solid-liquid coexistence, cooperate and penetrate device 3 gageable characteristics, form a kind of foundry goods that possesses the semi-solid material characteristic and inject mould 4, manufacture method and equipment by this, not only can obtain the foundry goods of the good and satisfactory mechanical property of quality, because overall mucilage and to produce discharge-amount big is more suitable for a large amount of fast productions of workpiece.
Implementation method of the present invention comprises the following steps:
1. produce an overheated liquid metal;
2. provide a shearing to shear overheated liquid metal, and in this shear history, cool off overheated liquid metal fast, send the semisolid slurry then to forming a kind of semisolid slurry between its solid-liquid coexistence;
3. provide a device to hold the semisolid slurry, the temperature of keeping the semisolid slurry and continues to provide to shear and interrupts the dendroid micro-structural between its solid-liquid coexistence, to keep good semisolid slurry;
4. utilize the ejaculation device that the semisolid slurry is penetrated to a mould, form the semi-solid material foundry goods.
With reference to Fig. 2,3, it is the device that the present invention provides by above-mentioned technical characterstic, this device is established an overheated liquid metal generator 1 (for example crucible furnace), forms a kind of overheated liquid state in order to the molten metal material, then overheated liquid metal is sent overheated liquid metal generator 1; Overheated liquid metal generator 1 one side joints are established a protective gas supply 5, in order to the protection of overheated liquid metal to be provided, to prevent overheated liquid metal oxidation; One semisolid slurry generator 2 is and overheated liquid metal generator 1 is connected in order to accepting the overheated liquid metal of sending, and with its cooling and do to stir fast fast, to form the careful semisolid slurry of a kind of crystal grain; One penetrates device 3, is and the semisolid slurry outlet 201 of semisolid slurry generator 2 is connected, and it has the fine tune temperature function, in order to the semisolid slurry is maintained between a solid-liquid coexistence and metering is penetrated; One mould 4 by its die opening and closing action of sandwich mold unit 6 control, is to penetrate the emitted semisolid slurry of device 3 in order to accept, and makes foundry goods through pressurize.
Above-mentioned protective gas supply 5 can provide gases such as nitrogen, argon gas or sulfur hexafluoride, and this gas is filled in the overheated liquid metal generator 1.
Penetrating device 3 includes: a hollow material pipe 30, in order to temporary semisolid slurry, hollow material pipe 30 has one and the inlet ports 300 that are connected of the semisolid slurry of semisolid slurry generator 2 outlet 201, establish a nozzle 31 at hollow material pipe 30 other ends, in order to the semisolid slurry is injected mould 4, the nozzle 31 ends angle that preferably is inclined upwardly slightly wherein can be before nozzle 31 be connected with mould 4, prevents from that the semisolid slurry from hanging down to drip or release; One temperature control device in order to control hollow material pipe 30 and nozzle 31 temperature, can make the semisolid slurry before wait is injected to mould 4, still remain on semisolid slurry state, the temperature control device of this temperature control device and above-mentioned semi-solid slurry generator 2 is similar, it is by a heating element heater 32 that is centered around hollow material pipe 30 and nozzle 31 peripheries, 32 ＇, cooling element 33,33 ＇ and thermal insulating device 34 are formed, heating element heater 32,32 ＇ can be electrically-heated coil or induction heater, cooling element 33, the cooling tube that 33 ＇ can adopt inside to have cooling fluid to flow, cooling fluid can be selected water, air, cryogenic gas, heat transfer liquid or other have the fluid of identical characteristics, in the so-called phase III of penetrating device 3, temperature controlled main purpose is to keep the partial coagulation state of semisolid slurry, so its accuracy control over temperature is extremely important, and cooling element 33,33 ＇ are the coolings when preventing that heating-up temperature is too high; Penetrating device 3 inside, also be provided with one in order to keep the ejecting device of shearing and the semisolid slurry being injected into mould 4, this ejecting device is that a screw rod 35 and non-return valve 36 inject the semisolid slurry in the mould 4 of sandwich mold unit 6 clampings, the injection volume of its semisolid slurry and pressurize moulding are that the displacement and the pressure of mat control screw rod 35 is finished, above-mentioned supporting processing procedure and equipment, not only can obtain the good and good foundry goods of mechanical performance of quality, because the semisolid slurry is by generator 2 a large amount of outputs independently, penetrating device 3 can be used as metering and penetrates, the generation discharge-amount of its overall mucilage is big with making, and is more suitable for a large amount of productions of heavy castings.
Above-mentioned semisolid slurry generator 2,300 of the inlet ports of its outlet 201 and ejaculation device 3 are still established an open and close valve 26, with so that semi solid slurry body generator 2 and the temperature that penetrates between the device 3 do not produce tangible interference, thereby make its two the control of temperature separately easier and accurate; On the other hand, the high pressure in the time of need not bearing the ejaculation of semisolid slurry owing to semisolid slurry generator 2 can make the pipe thickness attenuate of body 21, thereby make the easier realization of quick cooling.
Mould 4 and sandwich mold unit 6, its structure and legacy equipment are similar, and sandwich mold unit 6 cooperates nozzle to be obliquely installed, and driving mechanism 61 drives sandwich mold unit 6, to finish the action that engages or leave nozzle 31.
Claims (9)
1. the method for a semi-solid-state metal injection molding is characterized in that:
A. produce an overheated liquid metal, and with this overheated liquid metal of protective gas protection;
B. provide a shearing to shear this overheated liquid metal, and in this shear history, cool off this overheated liquid metal fast, send the semisolid slurry then to forming a kind of semisolid slurry between its solid-liquid coexistence;
C. provide a device to hold above-mentioned semisolid slurry, and the samming of keeping this semisolid slurry is stirred between its solid-liquid coexistence;
D. utilize the ejaculation device that above-mentioned semisolid slurry is penetrated to a mould, form this semi-solid material foundry goods.
2. the method for semi-solid-state metal injection molding according to claim 1; it is characterized in that establishing a protective gas supply; in order to this overheated liquid metal of protective gas protection that is selected from nitrogen, argon gas or the sulfur hexafluoride any to be provided, to prevent this overheated liquid metal oxidation.
3. the method for semi-solid-state metal injection molding according to claim 1, it is characterized in that overheated liquid metal is introduced a hollow tube inside, utilize hollow tube that metal is cooled off fast, and utilize in the modes such as propeller, screw rod or electromagnetic agitation any to apply and shear and form this semisolid slurry.
4. according to the method for claim 1 or 3 described semi-solid-state metal injection moldings, it is characterized in that cooling is to utilize a heating element heater and a cooling element to finish fast.
5. device of implementing the described semi-solid-state metal ejection forming method of claim 1, include overheated liquid metal generator, semisolid slurry generator, penetrate device and mould, it is characterized in that: an overheated liquid metal generator is connected a semisolid slurry generator, one has the semisolid slurry outlet linking of the ejaculation device and the semisolid slurry generator of fine tune temperature function, and one accepts the mould that penetrates the emitted semisolid slurry of device.
6. the device of semi-solid-state metal injection molding according to claim 5 is characterized in that overheated liquid metal generator one side joint establishes a protective gas supply.
7. the device of semi-solid-state metal injection molding according to claim 5, it is characterized in that semisolid slurry generator establishes a hollow tube, body has one and the liquid inlet that is connected of overheated liquid metal generator and the outlet of sending this semisolid slurry, connect on the semisolid slurry generator and establish a temperature control device in order to control valve body temperature degree, and establish an agitating device in order to quick stirring semisolid slurry.
8. the device of semi-solid-state metal injection molding according to claim 7, it is characterized in that temperature control device is made up of heating element heater, cooling element and a thermal insulating device that is centered around the body periphery, wherein heating element heater is an electrically-heated coil or induction heater, and cooling element is that an inside has and is selected from the cooling tube that water, air, cryogenic gas or heat pass any cooling fluid among the liquid.
9. the device of semi-solid-state metal injection molding according to claim 5, it is characterized in that penetrating the hollow material pipe that device is established a temporary semisolid slurry, one end of hollow material pipe is established an end and is inclined upwardly an angle slightly in order to the semisolid slurry is injected the nozzle of mould, penetrate the temperature control device of establishing a control hollow material pipe temperature on the device, the temperature control device of this temperature control device and semisolid slurry generator is similar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97120579A CN1062793C (en) | 1997-10-05 | 1997-10-05 | Method and device for semi-solid metal ejection formation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97120579A CN1062793C (en) | 1997-10-05 | 1997-10-05 | Method and device for semi-solid metal ejection formation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1186722A CN1186722A (en) | 1998-07-08 |
| CN1062793C true CN1062793C (en) | 2001-03-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN97120579A Expired - Fee Related CN1062793C (en) | 1997-10-05 | 1997-10-05 | Method and device for semi-solid metal ejection formation |
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| CN (1) | CN1062793C (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130340967A1 (en) * | 2012-06-26 | 2013-12-26 | GM Global Technology Operations LLC | Advanced Feed System for Semi Solid Casting |
| CN103658564A (en) * | 2012-09-25 | 2014-03-26 | 北京有色金属研究总院 | Electromagnetic shearing melt treatment device |
| CN104162555B (en) * | 2014-05-28 | 2016-07-06 | 哈尔滨工业大学（威海） | A kind of Semi-Solid Thixoforming-flow combined shaping method |
| CN104308094B (en) * | 2014-09-15 | 2016-09-28 | 凤阳爱尔思轻合金精密成型有限公司 | The metal energized based on liquidus curve contains solid size former and method |
| CN104338932B (en) * | 2014-10-15 | 2017-09-15 | 苏州有色金属研究院有限公司 | Light metal semisolid injection (mo(u)lding) machine |
| CN109454216A (en) * | 2019-01-02 | 2019-03-12 | 宁波生久柜锁有限公司 | A kind of molten metal conveying device of semi-solid-state metal die casting equipment |
| CN109482841A (en) * | 2019-01-14 | 2019-03-19 | 宁波生久柜锁有限公司 | A kind of feed device for the hydraulic casting machine of semi-solid-state metal |
| CN112108615B (en) * | 2020-09-16 | 2021-11-23 | 江西晶科铝业有限公司 | Aluminum product casting solution conveying system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3902544A (en) * | 1974-07-10 | 1975-09-02 | Massachusetts Inst Technology | Continuous process for forming an alloy containing non-dendritic primary solids |
| US5040589A (en) * | 1989-02-10 | 1991-08-20 | The Dow Chemical Company | Method and apparatus for the injection molding of metal alloys |
| US5501266A (en) * | 1994-06-14 | 1996-03-26 | Cornell Research Foundation, Inc. | Method and apparatus for injection molding of semi-solid metals |
-
1997
- 1997-10-05 CN CN97120579A patent/CN1062793C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3902544A (en) * | 1974-07-10 | 1975-09-02 | Massachusetts Inst Technology | Continuous process for forming an alloy containing non-dendritic primary solids |
| US5040589A (en) * | 1989-02-10 | 1991-08-20 | The Dow Chemical Company | Method and apparatus for the injection molding of metal alloys |
| US5501266A (en) * | 1994-06-14 | 1996-03-26 | Cornell Research Foundation, Inc. | Method and apparatus for injection molding of semi-solid metals |
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| Publication number | Publication date |
|---|---|
| CN1186722A (en) | 1998-07-08 |
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