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Pressure casting aluminium aluminium alloy for cylinder of minicar engine

A technology for engine cylinder block and cast aluminum alloy, which is applied in the field of aluminum alloy materials, can solve problems such as unsatisfactory processing performance of aluminum alloy, lower elongation rate, unfavorable heat treatment, etc., and achieve good comprehensive casting process performance, small thermal deformation, and work good thermal stability

Inactive Publication Date: 2004-03-24
重庆长安汽车有限责任公司
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  • Summary
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  • Description
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AI Technical Summary

Problems solved by technology

Insufficient consideration of the Mg element will lead to unsatisfactory processing properties of aluminum alloys.
In addition, impurity elements Sn and Pb can form eutectic with low melting point, which is extremely unfavorable to heat treatment, and a very small amount of Sn can also significantly reduce the elongation after heat treatment, so the content of impurity elements Sn and Pb must be reasonably controlled

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Embodiment 1: one, batching composition

[0042] The ingredients are according to the following formula: W i =A i / (1-E i %) Wt calculation, in the formula:

[0043] A i The content of each element in the alloy X i (%wt);

[0044] E. i The burning loss rate of each element during smelting is shown in the table;

[0045] Wt is the total weight of the melted alloy;

[0046] W i The weight of each element in the total weight of a smelting;

[0047] The burning loss rate of elements is as follows:

[0048] Element Aluminum Silicon Magnesium Copper Titanium

[0049] E. i (%〕3 1 15 5 15

[0050] 2. Select the following raw and auxiliary materials: (if preparing 100 kg alloy)

[0051] Aluminum ingot: 87 kg of industrial high-purity aluminum;

[0052] Silicon: 11 kg of 1# crystalline silicon;

[0053] Master alloy: Al-50% Cu5 kg;

[0054] Metal pure magnesium ingot 0.4 kg;

[0055] 1 kg of refining agent and 0.5 kg...

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Abstract

The present invention relates to a mnicar engine cylinder pressure casting aluminium alloy, and its chemical component composition includes (wt%) Cu 1.5-3.0%, Si 10.0-12.0%, Mg 0.15-0.35%, the rest is al and the other is impurity. Said alloy tensile strength Qb is greater than or equal to 300MP. Said alloy has enough strength and rigidity and good size stability. Said alloy can meet the requirements for minicar engine cylinder body high-pressure casting process and mechanical working process.

Description

technical field [0001] The invention relates to an aluminum alloy material, especially a high-pressure cast aluminum alloy material that can be used to manufacture engine cylinder blocks of microcars. Background technique [0002] At present, cast iron is generally used as the engine block material of microcars. During the Ninth Five-Year Plan period, Chongqing Chang'an Company introduced the production technology of G series engines, new vans and cars from Suzuki of Japan, which includes many new materials, new technologies and new processes. Among them, the aluminum alloying of the cylinder block and cylinder head is very important to achieve weight reduction, weight reduction, energy saving, and reduction of emission pollution. In order to realize mass production of engines as soon as possible, the industrialization of cylinder block and cylinder head assembly is the first to bear the brunt. Among them, the research project of high-pressure casting aluminum alloy materi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/02
Inventor 沈玲崔容庆罗明刚张钊陈兵
Owner 重庆长安汽车有限责任公司
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