CN1129159A - Pressure-extruding casting technology for production of high-strength anti-shock aluminium foundry goods - Google Patents
Pressure-extruding casting technology for production of high-strength anti-shock aluminium foundry goods Download PDFInfo
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- CN1129159A CN1129159A CN 94110858 CN94110858A CN1129159A CN 1129159 A CN1129159 A CN 1129159A CN 94110858 CN94110858 CN 94110858 CN 94110858 A CN94110858 A CN 94110858A CN 1129159 A CN1129159 A CN 1129159A
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- aluminium alloy
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Abstract
In this mould designing, based on present die cast gating system, the thickness and width of internal pouring opening are enlarged, and the content of maganium and copper in aluminium alloy is controlled. A member to be casted is directly extruded on a press casting machine through high-pressure, low-temp. and low-speed technology, and the obtained cast is intensively treated by quenching. Said invention has the advantage of simple process, advanced technology, beautful in product appearance, high strength, good shock-resisting performance, low material consumption etc..
Description
The invention belongs to the new technology of a kind of production intensity height, aluminium alloy casting that anti-seismic performance is good.
Adopt traditional steel die cast, low pressure casting production high strength, aluminium alloy castings that anti-seismic performance is good, the subject matter of existence is extremely low, of poor quality, the high material consumption of the qualification rate of product, can not satisfy the requirement of producing materials at all.The high-strength anti-shock aluminium alloy castings of producing with compression casting, though change is arranged greatly than the casting quality that copper mold is cast and low pressure casting is produced, but, handles on the foundry goods of compression casting because can not carrying out quenching strengthening, the difficult problem of " quenching and bubbling " does not break through, make it the performance requirement that product can not satisfy high-strength anti-shock, can not produce intensity height, aluminium alloy castings product that anti-seismic performance is good equally.Use the user of high-strength anti-shock aluminium alloy castings and the specialized factory that produces the high-strength anti-shock aluminium alloy castings, the new technology that all presses for the production difficult problem that can solve the high-strength anti-shock aluminium alloy castings is conscientiously come out.
A kind of new process of coming production intensity height, aluminium alloy castings that anti-seismic performance is good with the pressure extrusion casting technology of providing at the problems referred to above is provided,
Method Of Accomplishment of the present invention is on the basis of the steel die cast of existing production aluminium alloy castings and low pressure casting, a kind of pressure extrusion casting technology of realization.Promptly adopt the running gate system of existing steel die cast and the excessive system of row of compression casting, pay attention to increasing the thickness and the width of ingate at the mould design aspect.On die casting machine, directly carry out the extrusion casint moulding.Adopt the extrusion process of " high two is low " of high pressure, low temperature, low speed.At the trade mark is on the basis of ZL112 aluminium alloy, magnesium (Mg), copper (Cu) content in the strict control alloy composition.The gained foundry goods is carried out quenching strengthening handle,, meet design requirement to improve intensity and anti-seismic performance.
Advantage of the present invention is: combine the characteristics of conventional steel die cast, low pressure casting and compression casting, the surface quality of continuous castings of producing is good, dense structure, and defectives such as pore-free, shrinkage cavity, shrinkage porosite: can quenching strengthening, chemical analysis is stable; Greatly reduce material consumption, reduce by 40%, reduce by 15% than low pressure casting than steel die cast; The production efficiency height improves 250% than steel die cast, improve 50% than low pressure casting, and cost is low, and mechanical property is good.After testing, tensile strength surpasses 274mpa, and Brinell hardness HB surpasses 88.7, and percentage elongation surpasses 2.8%; Technology is simple, and advanced technology is easy to utilize; Conscientiously improve the serviceability of high-strength anti-shock aluminium alloy castings, prolonged the service life of product, can produce good economic benefit and social benefit.
Most preferred embodiment of the present invention: with the damping tube on southern 125 motorcycles is example, and this damping sleeve pipe is the high-strength anti-shock aluminium alloy castings, and the mechanical property condition of design is respectively: tensile strength 250mpa, Brinell hardness HB are 85-105, and percentage elongation is 2%.The aluminium alloy castings that adopts this pressure, extruding casting technology to produce, mechanical property meets design requirement fully.Promptly (1), use the row of steel die cast running gate system in the conventional die design schemes and the compression casting system of overflowing, be 30-50% of foundry goods thickest through the ingate thickness of repetition test, width is 60-80% of a casting length.(2), on die casting machine, directly carry out the extrusion casint moulding.(3) one high two low extrusion casint moulding process, high pressure is not less than 700 kg/cm, and the aluminium alloy temperature of extruding is 600-640 ℃, and the aluminium alloy flow velocity of extruding is no more than 0.5 meter per second.(4) be on the basis of ZL112 aluminium alloy at the trade mark, in the composition of aluminium alloy, the content of strict control magnesium (Mg) is 0.2-0.45%, and the content of copper (Cu) is 2.5-4.0%.(5) the quenching strengthening technology is: foundry goods rises to 480-520 ℃, is incubated 4-6 hours, then quenches in 70-80 ℃ hot water, is incubated 3-5 hours then in 200-260 ℃ of temperature, air cooling.(6) physical and chemical testing is made in the sampling section on the foundry goods body: tensile strength is 274-321.5mpa, and Brinell hardness HB is 88.7-106, and percentage elongation is 2.8-4.8%.
This pressure extrusion foundry goods new technology is suitable for the production of all high-strength anti-shock aluminium alloy castingses, the mechanical property of products obtained therefrom all can reach and surpass design condition, satisfies instructions for use, and product is attractive in appearance, and quality is good, and long service life is very popular with users.
Claims (1)
- A kind of pressure extrusion casting technology of producing high-strength anti-shock aluminium foundry goods, comprise the mould design, the running gate system of steel die cast and the row of the compression casting system of overflowing, the thickness that it is characterized in that ingate in the running gate system is 30-50% of foundry goods thickest, width is 60-80% of a casting length, on die casting machine, directly carry out extrusion modling, pressure is not less than 700 kg/cm, the aluminium alloy temperature of extruding is 600-640 ℃, the flow velocity of the aluminium alloy of extruding is less than 0.5 meter per second, and the content of magnesium in the control aluminium alloy is 0.20-0.45%, and copper content is 2.3-4.0%, gained foundry goods quenching strengthening, foundry goods is warming up to 480-520 ℃, is incubated after 4-6 hours, in 70-80 ℃ hot water, quench, then be incubated 3-5 hours in 200-260 ℃ of temperature, air cooling promptly gets the high-strength anti-shock aluminium alloy castings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94110858 CN1129159A (en) | 1994-02-28 | 1994-02-28 | Pressure-extruding casting technology for production of high-strength anti-shock aluminium foundry goods |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94110858 CN1129159A (en) | 1994-02-28 | 1994-02-28 | Pressure-extruding casting technology for production of high-strength anti-shock aluminium foundry goods |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1129159A true CN1129159A (en) | 1996-08-21 |
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ID=5034776
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94110858 Pending CN1129159A (en) | 1994-02-28 | 1994-02-28 | Pressure-extruding casting technology for production of high-strength anti-shock aluminium foundry goods |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1129159A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1094398C (en) * | 2000-11-03 | 2002-11-20 | 河北省万全县丰华有色金属加工厂 | Pure copper air and slag hole sleeve extrusion casting process |
| CN100341640C (en) * | 2004-06-13 | 2007-10-10 | 李华伦 | Magnesium alloy lean liquid semi-solid impact extruding shaping technology |
| CN106493339A (en) * | 2016-11-06 | 2017-03-15 | 广州金邦液态模锻技术有限公司 | A kind of method for producing aluminium alloy spring base with Horizontal type extrusion casting machine |
-
1994
- 1994-02-28 CN CN 94110858 patent/CN1129159A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1094398C (en) * | 2000-11-03 | 2002-11-20 | 河北省万全县丰华有色金属加工厂 | Pure copper air and slag hole sleeve extrusion casting process |
| CN100341640C (en) * | 2004-06-13 | 2007-10-10 | 李华伦 | Magnesium alloy lean liquid semi-solid impact extruding shaping technology |
| CN106493339A (en) * | 2016-11-06 | 2017-03-15 | 广州金邦液态模锻技术有限公司 | A kind of method for producing aluminium alloy spring base with Horizontal type extrusion casting machine |
| CN106493339B (en) * | 2016-11-06 | 2019-02-15 | 广州金邦液态模锻技术有限公司 | A method of aluminium alloy spring base is produced with Horizontal type extrusion casting machine |
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| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |