Die casting surface treatment method and product thereof
A surface treatment and surface pretreatment technology, which is applied to special surfaces, devices for coating liquid on the surface, electrolytic coatings, etc., can solve the problems of high-quality surface treatment of die-casting parts, poor chemical properties of magnesium alloys, and poor corrosion resistance of die-casting parts. Lose the metal texture and other problems, and achieve better and more perfect appearance, environmental protection technology, and better and more perfect antibacterial function
Inactive Publication Date: 2014-03-12
MITAC PRECISION TECH(KUNSHAN) CORP
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Problems solved by technology
[0004] (1) Alloy materials for die-casting determine that die-casting parts cannot be subjected to high-quality surface treatment. For example, the existing die-casting aluminum alloy cannot be anodized; magnesium alloy has active chemical properties and poor corrosion resistance, so it must be painted or filmed. Surface treatment of decorative parts, however, this will make the die-casting parts lose their metallic texture;
[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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[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: providing a die casting with slight defects on the surface;
[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 60 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: Dip the...
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Abstract
The invention relates to a die casting surface treatment method and a product thereof. The method comprises: (1) die casting forming of a work-piece; (2) a surface pre-treatment; (3) cold spray coating; and (4) an electrophoresis coating treatment. The product is the product produced through treatments by using the method. According to the present invention, the cold spray coating technology and the electrophoresis coating surface treatment technology are combined to produce the high texture die casting finished product having the die casting surface metal effect on the defective die casting surface, the surface treatment method has characteristics of environmental protection process, simple process and substantial die casting finished product yield increase, and is suitable for large scale industrial application, and the treated product has characteristics of good corrosion resistance, compactness, beautiful appearance, metal texture effect, metal color penetration effect, and an antibacterial 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-...
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IPC IPC(8): C25D13/12B05D5/06
Inventor 郭雪梅孙兵兵
Owner MITAC PRECISION TECH(KUNSHAN) CORP