CN85102454A - Aluminium alloy for casting piston of eatectic silicon, copper, magnesium, manganese and tellurium series - Google Patents
Aluminium alloy for casting piston of eatectic silicon, copper, magnesium, manganese and tellurium series Download PDFInfo
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- CN85102454A CN85102454A CN 85102454 CN85102454A CN85102454A CN 85102454 A CN85102454 A CN 85102454A CN 85102454 CN85102454 CN 85102454 CN 85102454 A CN85102454 A CN 85102454A CN 85102454 A CN85102454 A CN 85102454A
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Abstract
Alloy of the present invention is on the basis of zl108 alloy, has adopted tellurium microalloying or tellurium to add the technical measures that antimony combined microalloying or tellurium add the rare earth combined microalloying and has obtained.Alloy of the present invention and ZL108 relatively its maximum characteristics are: improved castability; Room temperature and high-temperature mechanical property have been improved significantly; Linear expansivity had obviously and reduced, and having reached silicon content and be 20%～22% hypereutectic Al-Si is the level of piston alloy; Improved wear resistance.
Description
The invention belongs to cast aluminium alloy material.
In order to alleviate the particularly weight of automobile and aircraft engine of engine, often adopt aluminium alloy to make piston.The working temperature of piston can reach about 300 ℃～360 ℃, requires to have quite high intensity.For the piston of mass production cast aluminium alloy, and require to reach the purpose that Zu Zhi Cause is close, intensity is high, all adopt permanent mold casting basically.This just requires piston alloy to have following characteristics:
1. be suitable for permanent mold casting; 2. certain wear resistance is arranged, so that make not reason excessive wear and piston is scrapped of piston ring groove; 3. thermal conductivity is big as far as possible, makes the unlikely De Taigao of liter of temperature; 4. linear expansivity is little, so that less variation, unlikely generation card cylinder and the high-power phenomenon that does not increase of oil consumption or the like take place the gap between piston and the cylinder.
At present better performances, price is cheap, use very widely that piston alloy is an Al-Si class piston alloy, zl108 alloy as China is exactly a kind of piston alloy commonly used, its main chemical compositions is: Si11%～13%, Cu1.0%～2.0%, Mg0.4%～1.0%, Mn0.3%～0.9%, all the other are Al.The external corresponding trade mark has: the SAE328(main chemical compositions of the U.S. is: Si11.0%～13.0%, and Cu1.0%～2.0%, Mg0.45%～1.0%, Mn0.5%～0.9%, all the other are Al.), the Mahle(of West Germany except that with the ZL108 identical component, also contain small amount of N i and Ti).
The major advantage of this alloy is: good fluidity; No hot cracking tendency; The resistance to air loss height; Room temperature and high-temperature mechanical property are good; High thermal conductivity and little proportion.Its main drawback is: air-breathing tendency is bigger in fusion process; High temperature and normal temperature mechanical property are high not enough; Wear resistance is also not ideal enough; Though linear expansivity is less, still be not so good as the little of hypereutectic Al-Si class piston alloy.In order to keep and further to improve its advantage, reduce the disadvantageous effect of shortcoming as far as possible, the present invention has kept its main chemical compositions on the basis of ZL108, adopt the major technique measure of combined microalloying, has developed piston aluminium alloy.Its room temperature and high-temperature mechanical property index, linear expansivity index, wear resistance and castability all are better than the piston aluminium alloy of the domestic and international similar trade mark.
Main points of the present invention are on the basis of ZL108, correspondingly add 0.001%～0.200% tellurium or add 0.001%～0.200% tellurium and 0.15%～0.30% rare earth element or add 0.001%～0.200% tellurium and 0.15%～0.40% antimony.Adopt with identical starting material of ZL108 and melting equipment and just can make alloy of the present invention.The scope of its chemical ingredients can be controlled in:
ZLAlSi12CuMgMnTe:Si11%～13%, Cu1.0%～2.0%, Mg0.4%～1.0%, Mn0.3%～0.9%, Te0.001%～0.200%, Re0.15%～0.30%, all the other are Al; The impurity level that allows is identical with ZL108.
ZLAlSi12CuMgMnTeRe:Si11%～13%, Cu1.0%～2.0%, Mg0.4%～1.0%, Mn0.3%～0.9%, Te0.001%～0.200%, Re0.15%～0.30%, all the other are Al; The impurity content scope that allows is identical with ZL108.
ZLAlSi12CuMgMnTeSb:Si11%～13%, Cu1.0%～2.0%, Mg0.4%～1.0%, Mn0.3%～0.9%, Te0.001%～0.200%, Sb0.15%～0.40%, all the other are Al; The impurity content scope that allows is identical with ZL108.
Owing to adopt the tellurium microalloying in the alloy of the present invention or tellurium adds rare earth element or tellurium adds the antimony combined microalloying, so improved the air-breathing tendency of alloy in fusion process, the foundry goods pinhole rate is reduced, improved tissue, reduced linear expansivity 2 * 10
-6/ ℃, improved room temperature and high-temperature mechanical property; Improved wear resistance.
The piston aluminium alloy of the present invention no matter mechanical property of room temperature still is that the pyritous mechanical property all has by a relatively large margin raising than zl108 alloy and Mahle alloy.Alloy of the present invention also possesses some characteristics like this: no longer need in the fusion process with Na, Sr or the rotten processing of P; Aluminium liquid surface film oxide reduces in melting and the casting process; The smooth finish raising of processing rear piston surface etc.
The present invention is applicable to all kinds of pistons such as casting high-speed diesel engines, and the scrap rate of foundry goods is low, and performance is good, also can be mixed with alloy cast ingot.
Claims (1)
1, piston aluminium alloy, contain 11%～13% silicon in its chemical ingredients, 1.0%～2.0% copper, 0.4%～1.0% magnesium, 0.3%～0.9% manganese, all the other are aluminium, and feature of the present invention is to add 0.001%～0.200% tellurium or add 0.001%～0.200% tellurium and the tellurium of 0.15%～0.30% rare earth element or 0.001%～0.200% and 0.15%～0.4% antimony in this alloy, as alloy element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 85102454 CN85102454A (en) | 1985-04-01 | 1985-04-01 | Aluminium alloy for casting piston of eatectic silicon, copper, magnesium, manganese and tellurium series |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 85102454 CN85102454A (en) | 1985-04-01 | 1985-04-01 | Aluminium alloy for casting piston of eatectic silicon, copper, magnesium, manganese and tellurium series |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN85102454A true CN85102454A (en) | 1986-04-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 85102454 Pending CN85102454A (en) | 1985-04-01 | 1985-04-01 | Aluminium alloy for casting piston of eatectic silicon, copper, magnesium, manganese and tellurium series |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN85102454A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103213289A (en) * | 2013-04-16 | 2013-07-24 | 江苏奥新新能源汽车有限公司 | Molding technology for composite material product |
| US8574382B2 (en) | 2007-05-24 | 2013-11-05 | Aluminium Rheinfelden Gmbh | Heat-resistant aluminium alloy |
| CN104694789A (en) * | 2015-03-09 | 2015-06-10 | 广西南南铝加工有限公司 | 4004 aluminum alloy containing bismuth and tellurium for brazing and production method of 4004 aluminum alloy |
-
1985
- 1985-04-01 CN CN 85102454 patent/CN85102454A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8574382B2 (en) | 2007-05-24 | 2013-11-05 | Aluminium Rheinfelden Gmbh | Heat-resistant aluminium alloy |
| CN101311283B (en) * | 2007-05-24 | 2015-03-04 | 莱茵费尔登炼铝厂有限责任公司 | High-temperature aluminium alloy |
| CN103213289A (en) * | 2013-04-16 | 2013-07-24 | 江苏奥新新能源汽车有限公司 | Molding technology for composite material product |
| CN104694789A (en) * | 2015-03-09 | 2015-06-10 | 广西南南铝加工有限公司 | 4004 aluminum alloy containing bismuth and tellurium for brazing and production method of 4004 aluminum alloy |
| CN104694789B (en) * | 2015-03-09 | 2017-06-06 | 广西南南铝加工有限公司 | 4004 aluminium alloys and its production method of soldering bismuth-containing and tellurium |
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