Preparation method for high performance aluminium alloy automobile part

A technology for auto parts and aluminum alloys, applied in the field of die-casting, can solve the problems of high cost consumption, poor mechanical properties and machining performance, and achieve the effects of reducing labor intensity, stable molding process, and high product qualification rate

Inactive Publication Date: 2019-12-06
KINGPIN PRECISION IND SUZHOU CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, aluminum alloys have been widely used in automotive materials in domestic and foreign markets, but ordinary aluminum alloys cannot meet the needs of the modern automotive industry. Part of the aluminum alloy preparation is completed by heat treatment, which consumes a lot of cost, which puts forward higher requirements for the alloy material and its preparation process

Method used

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Embodiment

[0020] A method for preparing high-performance aluminum alloy auto parts, the steps are as follows:

[0021] 1) Raw material preparation, in percentage terms:

[0022] Si 9.0-10%; Mg 0.051-0.54%; Fe≤1.5%; Cu 2.5-4.0%; Mn≤0.56%, Ni≤0.56%; Zn≤1.3%; Ti≤0.26%; Cr≤0.16%; Silver Cr ≤0.1%; graphite Cr≤0.16%; silicon carbide Cr≤0.16%, and Al occupying the balance;

[0023] 2) Melt the raw materials and raise the temperature to 720°C to 750°C, add a modifier, and then raise the temperature to 810°C for modification treatment. The amount of the modifier added is 0.7% of the total weight of the ingredients to obtain molten metal, and then keep it warm;

[0024] 3) Electromagnetic stirring is carried out on the molten metal liquid, the electromagnetic stirring current is 30-45A, the frequency is 30-35Hz, and the circular stirring is carried out for 3-5 minutes to obtain the material liquid;

[0025] 4) The mold is closed to form a cavity and a runner, and oxygen is injected into the inj...

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PUM

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Abstract

The invention provides a preparation method for a high performance aluminium alloy automobile part. The preparation method comprises the following steps of preparation of raw materials comprising 9.0%-10% of Si, 0.051%-0.54% of Mg, no more than 1.5% of Fe, 2.5%-4.0% of Cu, no more than 0.56% of Mn, no more than 0.56% of Ni, no more than 1.3% of Zn, no more than 0.26% of Ti, no more than 0.16% of Cr, no more than 0.1% of silver Cr, no more than 0.16% of graphite Cr, no more than 0.16% of silicon carbide Cr and the balance Al; modification treatment; electromagnetic stirring; oxygen injection; die-cast part curing; and demoulding and molding.

Description

technical field [0001] The invention relates to the technical field of die-casting, in particular, it shows a method for preparing high-performance aluminum alloy auto parts. Background technique [0002] Die-casting, referred to as die-casting, is a precision forming technology for metal parts close to the final shape and size, and the final product is die-casting. Its essence is that under the action of high pressure, the liquid metal is filled into the mold cavity at high speed, and is formed and solidified under the action of pressure, so as to obtain die-casting parts with clear outline and smooth surface. In the non-ferrous metal casting industry, die casting is an important casting method. In recent years, light alloys dominated by magnesium and aluminum have occupied an important position in the die-casting industry. Aluminum alloy castings obtained through die-casting account for about 60% of the total lead alloy castings. [0003] In recent years, with the accele...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/04B22D17/22
CPCB22D17/2272C22C21/04
Inventor 田跃文朱立群陆洋峰张峰张显东夏恩帅纪伟
Owner KINGPIN PRECISION IND SUZHOU CO LTD
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