CN105568080A - Aluminum alloy die casting and preparation method thereof - Google Patents
Aluminum alloy die casting and preparation method thereof Download PDFInfo
- Publication number
- CN105568080A CN105568080A CN201610054598.1A CN201610054598A CN105568080A CN 105568080 A CN105568080 A CN 105568080A CN 201610054598 A CN201610054598 A CN 201610054598A CN 105568080 A CN105568080 A CN 105568080A
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- die casting
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- aluminum alloy
- molten aluminium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/02—Alloys based on aluminium with silicon as the next major constituent
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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
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/026—Alloys based on aluminium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/03—Making non-ferrous alloys by melting using master alloys
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
The invention discloses an aluminum alloy die casting, which is prepared from the following components in mass percent: 3 to 6 percent of Si, 2 to 3 percent of Mg, 0.3 to 1.2 percent of Mn, 1.1 to 1.8 percent of Fe, 0.03 to 0.08 percent of Sr, 0.04 to 0.06 percent of Er, not more than 0.5 percent of other metallic and nonmetallic impurity elements in total amount and the balance Al. The aluminum alloy die casting disclosed by the invention has good processability, is easy to shape and high in strength and toughness, and also has high corrosion resistance.
Description
Technical field
The present invention relates to die casting manufacture field, particularly a kind of aluminum alloy die casting and preparation method thereof.
Background technology
Along with people are day by day strong to the requirement of the light weight of product, low cost, aluminium alloy all has significant advantage due to it in these two aspects, more comes into one's own.And aluminium diecast alloy can realize the once shaped of complex construction, in the simplification, operability of operation, have very large advantage, it is general for making the application of aluminum current alloy pressuring casting to the utmost.
But current aluminium diecast alloy exists the defect that can not get both in die casting and physical strength, serious have impact on the application of aluminum alloy die casting in the load-bearing such as automobile, air-conditioning accessory.Common aluminium diecast alloy mainly contains aluminium silicon system and high purity alumina-magnesia alloy; Aluminium silicon class alloy pressuring casting, poor once chemically treating surface and burnt hair, blackout, mechanical property, and fragility is larger; And although other high purity alumina-magnesia alloy surface treatment properties is excellent, die casting performance is bad, and have easy sticking to mould, hot tearing, misrun, cold shut and the defect such as loose, mechanical property and hardness are not high yet.Traditional aluminium diecast alloy anodic oxidation poor-performing, intensity is lower, erosion resistance is poor and mobility cannot meet the requirement of product material.
Summary of the invention
The invention provides a kind of aluminum alloy die casting and preparation method thereof, make aluminum alloy die casting have excellent mechanical property.
For achieving the above object, technical scheme of the present invention is:
A kind of aluminum alloy die casting, the mass percent of its component and each component is: Si3 ~ 6%, Mg2 ~ 3%, Mn0.3 ~ 1.2%, Fe1.1 ~ 1.8%, Sr0.03 ~ 0.08%, Er0.04 ~ 0.06%, other metals and nonmetallic impurity element total amount are no more than 0.5%, and all the other are Al.
Preferably, the component of described aluminum alloy die casting and the mass percent of each component are: Si5%, Mg2.6%, Mn0.8%, Fe1.6%, Sr0.06%, Er0.05%, and other metals and nonmetallic impurity element total amount are no more than 0.5%, and all the other are Al.
A preparation method for aluminum alloy die casting, comprises the following steps:
(1) melt: first fine aluminium, pure magnesium, aluminum silicon alloy are added in smelting furnace, be heated to 730 ~ 750 DEG C and stir alloy is melted completely, then ferro-aluminium, magnesium strontium alloy, Al-Er alloy and alumal is added, continue to be warming up to 780 ~ 800 DEG C, after alloying element all melts, obtain molten aluminium alloy;
(2) refining: the temperature of molten aluminium alloy is adjusted to 750 ~ 770 DEG C, sprays into refining agent and carries out refining treatment, be then warming up to 750-760 DEG C, passes into argon gas and carries out refinery by de-gassing, completes refining process after inspection molten aluminium alloy composition is qualified;
(3) leave standstill: the molten aluminium alloy after refining is left standstill, treats that molten aluminium alloy temperature is down to 690 ~ 710 DEG C;
(4) die casting: the die cavity of mould is preheated to 220 ~ 230 DEG C, after molten aluminium alloy after step (3) being processed again, injection is in the die cavity of mould, the liquation flow velocity wherein filled when type starts is 0.26 ~ 0.30m/s, casting pressure is 50 ~ 55MPa, fill type rate more than 60% after, flow velocity to the 1.7 ~ 1.9m/s, the casting pressure that improve liquation are 65 ~ 70MPa, terminate until fill type die casting;
(5) demoulding: it is 100 ~ 110s that die casting terminates the rear dwell time, lays down pressure, after cooling 20 ~ 25s, namely the demoulding obtains die casting finished product.
Aluminum alloy die casting of the present invention, can be applicable to the fields such as air-conditioning, automobile, engine, has the following advantages:
(1) good processing characteristics is had, easily shaping, there will not be the defects such as sticking to mould, hot tearing, misrun, cold shut;
(2) with at present conventional aluminium silicon system and high purity alumina-magnesia alloy phase ratio, aluminum alloy die casting of the present invention has in tensile strength, yield strength and significantly promotes, and intensity is high, toughness large, also has good erosion resistance.
Embodiment
Below in conjunction with specific embodiment, the invention will be further described, but protection scope of the present invention and range of application are not limited to following examples:
Embodiment 1
A kind of aluminum alloy die casting, the mass percent of its component and each component is: Si5%, Mg2.6%, Mn0.8%, Fe1.6%, Sr0.06%, Er0.05%, and other metals and nonmetallic impurity element total amount are no more than 0.5%, and all the other are Al.
The preparation method of above-mentioned aluminum alloy die casting, comprises the following steps:
(1) melt: first fine aluminium, pure magnesium, aluminum silicon alloy are added in smelting furnace, be heated to 730 ~ 750 DEG C and stir alloy is melted completely, then ferro-aluminium, magnesium strontium alloy, Al-Er alloy and alumal is added, continue to be warming up to 780 ~ 800 DEG C, after alloying element all melts, obtain molten aluminium alloy;
(2) refining: the temperature of molten aluminium alloy is adjusted to 750 ~ 770 DEG C, sprays into refining agent and carries out refining treatment, be then warming up to 750-760 DEG C, passes into argon gas and carries out refinery by de-gassing, completes refining process after inspection molten aluminium alloy composition is qualified;
(3) leave standstill: the molten aluminium alloy after refining is left standstill, treats that molten aluminium alloy temperature is down to 690 ~ 710 DEG C;
(4) die casting: the die cavity of mould is preheated to 220 ~ 230 DEG C, after molten aluminium alloy after step (3) being processed again, injection is in the die cavity of mould, the liquation flow velocity wherein filled when type starts is 0.26 ~ 0.30m/s, casting pressure is 50 ~ 55MPa, fill type rate more than 60% after, flow velocity to the 1.7 ~ 1.9m/s, the casting pressure that improve liquation are 65 ~ 70MPa, terminate until fill type die casting;
(5) demoulding: it is 100 ~ 110s that die casting terminates the rear dwell time, lays down pressure, after cooling 20 ~ 25s, namely the demoulding obtains die casting finished product.
Adopt the 1cm tension specimen that aforesaid method is obtained, at room temperature test its mechanical property: tensile strength is 330MPa, yield strength is 259MPa, and unit elongation is 12.1%.
Embodiment 2
A kind of aluminum alloy die casting, the mass percent of its component and each component is: Si3%, Mg2%, Mn0.3%, Fe1.1%, Sr0.03%, Er0.04%, and other metals and nonmetallic impurity element total amount are no more than 0.5%, and all the other are Al.
The preparation method of above-mentioned aluminum alloy die casting, comprises the following steps:
(1) melt: first fine aluminium, pure magnesium, aluminum silicon alloy are added in smelting furnace, be heated to 730 ~ 750 DEG C and stir alloy is melted completely, then ferro-aluminium, magnesium strontium alloy, Al-Er alloy and alumal is added, continue to be warming up to 780 ~ 800 DEG C, after alloying element all melts, obtain molten aluminium alloy;
(2) refining: the temperature of molten aluminium alloy is adjusted to 750 ~ 770 DEG C, sprays into refining agent and carries out refining treatment, be then warming up to 750-760 DEG C, passes into argon gas and carries out refinery by de-gassing, completes refining process after inspection molten aluminium alloy composition is qualified;
(3) leave standstill: the molten aluminium alloy after refining is left standstill, treats that molten aluminium alloy temperature is down to 690 ~ 710 DEG C;
(4) die casting: the die cavity of mould is preheated to 220 ~ 230 DEG C, after molten aluminium alloy after step (3) being processed again, injection is in the die cavity of mould, the liquation flow velocity wherein filled when type starts is 0.26 ~ 0.30m/s, casting pressure is 50 ~ 55MPa, fill type rate more than 60% after, flow velocity to the 1.7 ~ 1.9m/s, the casting pressure that improve liquation are 65 ~ 70MPa, terminate until fill type die casting;
(5) demoulding: it is 100 ~ 110s that die casting terminates the rear dwell time, lays down pressure, after cooling 20 ~ 25s, namely the demoulding obtains die casting finished product.
Adopt the 1cm tension specimen that aforesaid method is obtained, at room temperature test its mechanical property: tensile strength is 297MPa, yield strength is 213MPa, and unit elongation is 9.2%.
Embodiment 3
A kind of aluminum alloy die casting, the mass percent of its component and each component is: Si6%, Mg3%, Mn1.2%, Fe1.8%, Sr0.08%, Er0.06%, and other metals and nonmetallic impurity element total amount are no more than 0.5%, and all the other are Al.
The preparation method of above-mentioned aluminum alloy die casting, comprises the following steps:
(1) melt: first fine aluminium, pure magnesium, aluminum silicon alloy are added in smelting furnace, be heated to 730 ~ 750 DEG C and stir alloy is melted completely, then ferro-aluminium, magnesium strontium alloy, Al-Er alloy and alumal is added, continue to be warming up to 780 ~ 800 DEG C, after alloying element all melts, obtain molten aluminium alloy;
(2) refining: the temperature of molten aluminium alloy is adjusted to 750 ~ 770 DEG C, sprays into refining agent and carries out refining treatment, be then warming up to 750-760 DEG C, passes into argon gas and carries out refinery by de-gassing, completes refining process after inspection molten aluminium alloy composition is qualified;
(3) leave standstill: the molten aluminium alloy after refining is left standstill, treats that molten aluminium alloy temperature is down to 690 ~ 710 DEG C;
(4) die casting: the die cavity of mould is preheated to 220 ~ 230 DEG C, after molten aluminium alloy after step (3) being processed again, injection is in the die cavity of mould, the liquation flow velocity wherein filled when type starts is 0.26 ~ 0.30m/s, casting pressure is 50 ~ 55MPa, fill type rate more than 60% after, flow velocity to the 1.7 ~ 1.9m/s, the casting pressure that improve liquation are 65 ~ 70MPa, terminate until fill type die casting;
(5) demoulding: it is 100 ~ 110s that die casting terminates the rear dwell time, lays down pressure, after cooling 20 ~ 25s, namely the demoulding obtains die casting finished product.
Adopt the 1cm tension specimen that aforesaid method is obtained, at room temperature test its mechanical property: tensile strength is 329MPa, yield strength is 262MPa, and unit elongation is 11.5%.
Claims (3)
1. an aluminum alloy die casting, is characterized in that:
The component of described aluminum alloy die casting and the mass percent of each component are: Si3 ~ 6%, Mg2 ~ 3%, Mn0.3 ~ 1.2%, Fe1.1 ~ 1.8%, Sr0.03 ~ 0.08%, Er0.04 ~ 0.06%, other metals and nonmetallic impurity element total amount are no more than 0.5%, and all the other are Al.
2. aluminum alloy die casting according to claim 1, is characterized in that:
The component of described aluminum alloy die casting and the mass percent of each component are: Si5%, Mg2.6%, Mn0.8%, Fe1.6%, Sr0.06%, Er0.05%, and other metals and nonmetallic impurity element total amount are no more than 0.5%, and all the other are Al.
3. the preparation method of aluminum alloy die casting according to claim 1 and 2, is characterized in that comprising the following steps:
(1) melt: first fine aluminium, pure magnesium, aluminum silicon alloy are added in smelting furnace, be heated to 730 ~ 750 DEG C and stir alloy is melted completely, then ferro-aluminium, magnesium strontium alloy, Al-Er alloy and alumal is added, continue to be warming up to 780 ~ 800 DEG C, after alloying element all melts, obtain molten aluminium alloy;
(2) refining: the temperature of molten aluminium alloy is adjusted to 750 ~ 770 DEG C, sprays into refining agent and carries out refining treatment, be then warming up to 750-760 DEG C, passes into argon gas and carries out refinery by de-gassing, completes refining process after inspection molten aluminium alloy composition is qualified;
(3) leave standstill: the molten aluminium alloy after refining is left standstill, treats that molten aluminium alloy temperature is down to 690 ~ 710 DEG C;
(4) die casting: the die cavity of mould is preheated to 220 ~ 230 DEG C, after molten aluminium alloy after step (3) being processed again, injection is in the die cavity of mould, the liquation flow velocity wherein filled when type starts is 0.26 ~ 0.30m/s, casting pressure is 50 ~ 55MPa, fill type rate more than 60% after, flow velocity to the 1.7 ~ 1.9m/s, the casting pressure that improve liquation are 65 ~ 70MPa, terminate until fill type die casting; (5) demoulding: it is 100 ~ 110s that die casting terminates the rear dwell time, lays down pressure, after cooling 20 ~ 25s, namely the demoulding obtains die casting finished product.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106077559A (en) * | 2016-08-04 | 2016-11-09 | 苏州利达铸造有限公司 | A kind of manufacture method cleaning air inlet |
| CN107630173A (en) * | 2017-09-23 | 2018-01-26 | 新沂市中诺新材料科技有限公司 | A kind of high-strength aluminum alloy processing technology |
| CN108326253A (en) * | 2018-02-02 | 2018-07-27 | 韶关市泰铭压铸有限公司 | A kind of production method of aluminium alloy compression casting motor aluminum hull |
| CN110551924A (en) * | 2018-05-30 | 2019-12-10 | 比亚迪股份有限公司 | Aluminum alloy and preparation method and application thereof |
| CN111500903A (en) * | 2020-04-02 | 2020-08-07 | 科曼车辆部件系统(苏州)有限公司 | Non-heat-treatment type high-strength high-toughness cast aluminum alloy and preparation method thereof |
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| CN102071341A (en) * | 2010-12-03 | 2011-05-25 | 中国兵器工业第五二研究所 | Cast aluminum-silicon alloy for engine cylinder head and heat treatment process |
| CN103484731A (en) * | 2013-08-12 | 2014-01-01 | 安徽环宇铝业有限公司 | Aluminum alloy for automobile wheel hubs and preparation method thereof |
| CN104561691A (en) * | 2015-01-26 | 2015-04-29 | 上海交通大学 | High-plasticity cast aluminum alloy and pressure casting preparation method thereof |
| CN104630578A (en) * | 2015-01-26 | 2015-05-20 | 上海交通大学 | High-plasticity cast aluminum alloy and gravity casting preparation method thereof |
| CN105112736A (en) * | 2015-09-07 | 2015-12-02 | 苏州凯宥电子科技有限公司 | Die-cast aluminum alloy and preparing method thereof |
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2016
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102071341A (en) * | 2010-12-03 | 2011-05-25 | 中国兵器工业第五二研究所 | Cast aluminum-silicon alloy for engine cylinder head and heat treatment process |
| CN103484731A (en) * | 2013-08-12 | 2014-01-01 | 安徽环宇铝业有限公司 | Aluminum alloy for automobile wheel hubs and preparation method thereof |
| CN104561691A (en) * | 2015-01-26 | 2015-04-29 | 上海交通大学 | High-plasticity cast aluminum alloy and pressure casting preparation method thereof |
| CN104630578A (en) * | 2015-01-26 | 2015-05-20 | 上海交通大学 | High-plasticity cast aluminum alloy and gravity casting preparation method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106077559A (en) * | 2016-08-04 | 2016-11-09 | 苏州利达铸造有限公司 | A kind of manufacture method cleaning air inlet |
| CN107630173A (en) * | 2017-09-23 | 2018-01-26 | 新沂市中诺新材料科技有限公司 | A kind of high-strength aluminum alloy processing technology |
| CN108326253A (en) * | 2018-02-02 | 2018-07-27 | 韶关市泰铭压铸有限公司 | A kind of production method of aluminium alloy compression casting motor aluminum hull |
| CN110551924A (en) * | 2018-05-30 | 2019-12-10 | 比亚迪股份有限公司 | Aluminum alloy and preparation method and application thereof |
| CN111500903A (en) * | 2020-04-02 | 2020-08-07 | 科曼车辆部件系统(苏州)有限公司 | Non-heat-treatment type high-strength high-toughness cast aluminum alloy and preparation method thereof |
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| CN105568080B (en) | 2017-12-01 |
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Effective date of registration: 20180612 Address after: 321300 No. 123 Jin Gui Nan Road, Chengxi New District, Yongkang, Jinhua, Zhejiang Patentee after: ZHEJIANG WISOM INDUSTRY AND TRADE Co.,Ltd. Address before: 531400 Road 5, Pingguo Industrial Zone, Baise, the Guangxi Zhuang Autonomous Region. Patentee before: GUANGXI PINGGUO ALUMINIUM ALLOY PRECISION CASTING CO.,LTD. |
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Address after: 321300 No. 123 Jin Gui Nan Road, Chengxi New District, Yongkang, Jinhua, Zhejiang Patentee after: Zhejiang Feizhe Technology Co.,Ltd. Address before: 321300 No. 123 Jin Gui Nan Road, Chengxi New District, Yongkang, Jinhua, Zhejiang Patentee before: ZHEJIANG WISOM INDUSTRY AND TRADE Co.,Ltd. |