常见的及表面工艺处理及不良分析.pptVIP

Stamping 冲压 Polishing 抛光 Process: Plating 电镀 The sample is made by stainless steel, after high quality polishing, then arrange vacuum plating. 1/. Polish requirement: mirror polish, any scratch and dent can not be accepted, so the yield rate is low (about 80% at polish process). 需要镜面抛光，不良率较高。 2/. Big and flat part is suitable for mirror polish, one small round will be made after polished (R0.2 ~ R0.3mm). So the edge will not be too sharp. 3/. After polished, arrange PVD to make different color what we want. 此样板的材质为不锈钢，高质量的抛光后，再安排真空电镀以实现不同的颜色。 5. 抛光 Polishing 5. 抛光 Polishing Design: Surface is not flat, there is a positive curve at the surface of casting part. (Figure 1) 此形状的部件，抛光不会影响产品功能。 Version: there are two versions --- silver and gun metal color. After polishing and plating (Figure 2): Polishing: as the curve is positive, polishing thickness can be kept consistent, which will no affect assembly. Plating: use normal plating method can achieve silver and gun metal color. After stamping: as polishing and plating have not affected stamping process, surface quality is good. (Figure 3 4) Casting Part After Polishing and plating After Stamping Positive Curve Figure 1 Figure 2 Figure 3 Surface Effect Figure 4 Casting Part After Polishing and plating After Stamping Negative Curve Figure 1 Figure 2 Figure 3 Surface Effect Figure 4 Figure 5 Design: Surface require flat, there is a negative curve at the surface of casting part. (Figure 1)此形状的部件，抛光后会影响产品功能。 Version: there are three versions --- silver, gun metal color, topaz brown. After polishing and plating (Figure 2): Polishing: as the curve is negative, polishing thickness can not be kept consistent, middle thickness (5.45mm) is bigger than the end (5.35mm), which will affect assembly. Plating: use normal plating method for silver and gun metal color, use normal plating + PVD for topaz brown. After stamping: Silver and gun metal color: as polishing will affect stamping process, surface will have a slight marking a