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Phosphorization surface treatment technique for aluminum alloy die casting

A surface treatment and phosphating technology, applied in metal material coating process, pressure inorganic powder coating and other directions, can solve the problems of aluminum alloy volume shrinkage, difficult processing, local depression and other problems, achieve high surface quality, improve The effect of corrosion resistance, good economy and application prospects

Inactive Publication Date: 2016-08-17
安徽纯启动力科技有限公司
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  • Abstract
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Problems solved by technology

However, the volume shrinkage of aluminum alloy is large, and aluminum alloy die castings have inherent and inevitable casting defects, such as pores, cracks, inclusions, local depressions or flow marks, etc., which damage the surface quality of die castings
These defects make subsequent processing very difficult, and also make the yield of die-casting products low

Method used

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Embodiment Construction

[0017] For further understanding to the purpose of the present invention, method step and functional effect, now describe in detail as follows:

[0018] In this embodiment, the aluminum alloy die casting surface treatment process of the present invention includes the following steps:

[0019] 1. Provide aluminum alloy die-casting workpieces; the code name of the die-casting aluminum alloy is YL112.

[0020] 2. Surface pretreatment of aluminum alloy die castings, the steps are as follows:

[0021] (1) Clean the die-casting parts. The purpose of cleaning is to remove burrs, surface flow marks, attached oil stains, grease and other dirt on the surface of the die-casting parts;

[0022] (2) Sand blast the die-casting parts. After sand blasting, the surface reaches SA2.5 level, and the cleanliness should also meet the requirements of national standards; generally it is machine-operated, suitable for large-scale operations, high efficiency, low cost, and stable quality ;

[0023]...

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Abstract

The invention provides a phosphorization surface treatment technique for an aluminum alloy die casting. The technique comprises the following steps that 1, the aluminum alloy die casting is provided; 2, surface pretreatment is conducted on the aluminum alloy die casting; 3, cold spraying is conducted on the aluminum alloy die casting; and 4, phosphorization treatment is conducted on the aluminum alloy die casting. By the adoption of the surface treatment technique for the aluminum alloy die casting, the defects of the surface of the aluminum alloy die casting are overcome, and an aluminum alloy die-cast product high in surface quality is obtained.

Description

technical field [0001] The invention relates to a surface treatment process of a die casting, in particular to a phosphating surface treatment process of an aluminum alloy die casting. Background technique [0002] Die casting is a fast-growing metal forming precision casting method with high efficiency and less cutting in modern metal processing technology. Die castings have high dimensional accuracy, low surface roughness values, and high strength and hardness. Due to the above advantages, the die casting process has been widely used in all walks of life in the national economy. Die-casting aluminum alloy is the most widely used die-casting material at present, with good die-casting performance, good surface roughness and small thermal cracking. However, the volume shrinkage of aluminum alloy is large, and aluminum alloy die castings have inherent and inevitable casting defects, such as pores, cracks, inclusions, local depressions or flow marks, etc., which damage the su...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C24/02C23C22/07
CPCC23C24/02C23C22/07
Inventor 夏纯翠
Owner 安徽纯启动力科技有限公司
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