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Pressure casting surface processing method and product produced through method

A surface treatment and surface pretreatment technology, which is applied to special surfaces, pretreated surfaces, and devices for coating liquids on surfaces, etc., can solve problems such as poor chemical corrosion resistance, difficult manufacturing processes, and reduced yield of die-casting products. High yield of die-casting products, good corrosion resistance and simple process

Inactive Publication Date: 2014-03-12
MITAC PRECISION TECH(KUNSHAN) CORP
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Problems solved by technology

[0004] (1) The alloy material for die-casting determines that the die-casting parts cannot be treated with high-quality surface. For example, the commonly used die-casting aluminum alloy cannot be anodized; the die-casting magnesium alloy has active chemical properties and poor corrosion resistance. Trim surface treatment, however this will make the die casting lose its metallic feel
[0005] (2) Die castings have inherent and inevitable casting defects, such as pores, cracks, inclusions, local depressions and flow marks, etc. These defects make the subsequent process difficult and also reduce the yield of die casting products

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Embodiment Construction

[0024] For a further understanding of the purpose of the present invention, method steps and functions, please refer to figure 1 , and detailed below.

[0025] In order to achieve the above object, the present invention provides a method for surface treatment of die castings, which comprises the following steps:

[0026] Step 101: die-casting the workpiece;

[0027] Step 102: Grinding and mechanically removing the surface of the die-casting part, and then degreasing, ultrasonic cleaning and drying the treated surface;

[0028] Step 103: Grinding the defective parts on the surface of the die-casting after the above treatment, and then performing cold spraying treatment to repair the defective parts, and finally cold spraying a layer of metal with a uniform thickness of 20 μm to 100 μm on the surface of the die-casting material, and then grind and machine the die casting to obtain a uniform surface of the die casting;

[0029] Step 104: Spraying a layer of high-gloss paint on...

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Abstract

The invention discloses a pressure casting surface processing method and a product produced through the method. The method comprises the first step of casting and forming a workpiece, the second step of pre-processing the surface, the third step of carrying out cold spraying, and the fourth step of post-processing the surface. The product is the product processed through the method. According to the pressure casting surface processing method and the product produced through the method, the cold spraying technology and the surface post-processing technology are combined, the pressure casting finished product with the metallic texture effect or the high texture effect is manufactured on the surface of the pressure casting, the surface processing method is environmentally friendly in manufacturing process, simple in technology and suitable for being widely applied to the industry, and the yield of pressure casting finished products is greatly improved; the processed product is good in corrosion resistance, compact and attractive and has the metallic texture or high texture effect.

Description

【Technical field】 [0001] The invention relates to a method for treating the surface of a die-casting part and its product, in particular to a method for treating the surface of a die-casting part and its product when high-quality appearance treatment is required. 【Background technique】 [0002] With the development of science and technology, modern products require stylish appearance and rich texture while pursuing functions. When seeing engineering plastics and piano paint all over the place, suddenly there is a product made of all-aluminum metal with a sense of fashion and technology. This huge visual contrast brings people not only surprise, but shock , This is why Apple's products such as iPhone, MacBook Air, etc. are favored by users. Their appearance treatment adopts aluminum stamping integrated forming technology, that is, a machine that uses aluminum alloy extruded sheet and is integrally formed by CNC machine tools. Processing Technology. The advantage of the one-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05D7/14B05D3/12B05D3/02B05D3/14B05D3/10B05D5/06
Inventor 孙兵兵郭雪梅
Owner MITAC PRECISION TECH(KUNSHAN) CORP
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