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Low pressure casting aluminium alloy for cylinder cap of minicar engine

An engine cylinder head and low-pressure casting technology, which is applied in the field of aluminum alloy materials, can solve the problems of inability to reduce product costs and high prices, and achieve good filling, small deformation, and good forming effects

Inactive Publication Date: 2004-03-24
CHONGQING CHANGAN AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

Furthermore, the price of imported materials in Japan is high, and relying on imports for a long time cannot reduce product costs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0037] Example 1: Ingredients

[0038] The ingredients are according to the following formula: W i =A i / (1-E i %)Wt calculation, in the formula:

[0039] A i The content of each element in the alloy X i (%wt);

[0040] E. i The burning loss rate of each element during smelting is shown in the table;

[0041] Wt is the total weight of the melted alloy;

[0042] W i The weight of each element in the total weight of a smelting;

[0043] The burning loss rate of elements is as follows:

[0044] Element Aluminum Silicon Magnesium Copper Titanium

[0045] E. i (%〕 3 1 15 5 15 2. Select the following raw and auxiliary materials: (If 100 kg of alloy is prepared)

[0046] Aluminum ingot: 90 kg of industrial high-purity aluminum;

[0047] Silicon: 9 kg of 1# crystalline silicon;

[0048] Master alloy: Al-50% Cu5 kg;

[0049] Metal pure magnesium ingot 0.3 kg;

[0050] 1 kg of refining agent and 0.5 kg of slag removal agent, etc. 3. The firs...

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PUM

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Abstract

The present invention relates to a minicar engine cylinder cap low-pressure casting aluminium alloy, and its main chemical components are Si, Cu and Mg, in particular Cu and Mg control is better, and its harmful impurity element control is serious, and after said alloy is undergone the processes of modification treatment by means of modification agent and (T6) heat treatment, its tensile strength QbMPa is greater than or equal to 300, HB is about 110, and said alloy has enough strength and rigidity and good size stability, and said alloy can meet the requirements for miniature car engine cylinder cap low-pressure casting process and mechanical working process.

Description

technical field [0001] The invention relates to an aluminum alloy material, in particular to an aluminum alloy material which can be used for low-pressure casting of a microcar engine cylinder head. Background technique [0002] At present, the engine cylinder heads of microcars are generally cast by gravity casting; during the Ninth Five-Year Plan period, Chongqing Changan Company plans to introduce G series engines from Japan Suzuki Company, new van and car production technology, which includes many new materials, new technologies and new processes . Among them, it is very important to make the cylinder block and cylinder head aluminum alloy to achieve light weight, achieve the purpose of weight reduction, energy saving and emission reduction. In order to realize the mass production of the engine as soon as possible, the industrialization of the cylinder head assembly is the first to bear the brunt. Among them, the research project of low-pressure casting aluminum alloy ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/04
Inventor 沈玲崔容庆罗明刚张钊陈兵
Owner CHONGQING CHANGAN AUTOMOBILE CO LTD
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