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Analysis of defects in die castings -Ejector Pin Marks
(5/3/2020)
Defect description: Since the surface of the die-casting part is composed of the mold cavity, the ejector bar, the insert block, the movable block and other parts, the surface is left with convex or concave marks

Ejector Pin Marks


cause:
1. Uneven ejector pin or end wear
2. The mold cavity and slider are not well coordinated
3. The area of the jack is too small

Improve methods:
1. Adjust the jack or replace the ejector pin
2. Sturdy mold splicing position to eliminate convex and concave parts
3. Properly increase the area or increase the number of ejector pin

During the production of aluminum alloy die-casting parts, pay more attention to the changes in the details of the die-casting mold and die-casting machine, and take good methods as a habit, and the quality will be guaranteed.

Ningbo Hongxin Precision Machinery Co., Ltd. is a professional manufacturer of die casting, prototype, injection molded parts and CNC parts, welcome to contact us to discuss project development.