来源：http://www.jnhjgs.cn 发布时间：2021-02-06 17:27:45 点击：
In the process of processing aluminum alloy castings, Shandong Aluminum alloy die-casting manufacturers are prone to various defects on the surface of die-casting parts due to improper operation or wrong material selection. What Xiaobian solves today is the problem of marks and colored spots.
The marks on the surface of aluminum alloy castings include the concave and convex marks on the top rod, the mosaic marks on the sliding block and the marks on the push rod / insert. In this case, the aluminum alloy die-casting manufacturers infer that it may be because the push rod is not adjusted neatly or the end is worn, or the push rod area is too small, or the die cavity and slider splicing part and other moving parts are not well matched. At this time, the staff need to timely adjust the push rod to the correct position, appropriately increase the area or quantity of the push rod, and also tighten the inserts and other parts to eliminate the concave and convex parts.
The so-called colored spots of aluminum alloy castings include oil spots and black spots. This kind of situation may be due to the impure or excessive amount of paint, or the amount of graphite contained in the paint is too much. In view of this situation, aluminum alloy die-casting manufacturers suggest that you pay attention to thin and uniform coating, avoid accumulation, and try to use compressed air to blow away; you can also reduce the graphite content in the coating or directly choose water-based coating without graphite.