CNC Machining Mold Ejector Pins

What are ejector pins used for?
Mold ejector pins are typically mold parts, mainly used to push the finished product out of the mold cavity, preventing the product from sticking inside the mold.

Customer Pain Points:
1. Insufficient Hardness: Leading to premature wear of the ejector pins.
2. Poor Toughness: Increased risk of breakage, resulting in more frequent downtime for replacements.

Solutions:
* Material Selection: Use ASP30 powder high-speed steel, which has a high vanadium content that forms hard carbides, improving wear resistance by three times compared to traditional steels.
* Heat Treatment: Use vacuum quenching and triple tempering to achieve a stable hardness of HRC62-64.
* Precision Machining: Use a full-process grinding technique (centerless grinding → punch grinding → CNC surface grinding → slow wire cutting) to avoid CNC turning stress and reduce the risk of breakage.

Results:
Extended Lifespan: The lifespan of ASP30 ejector pins is improved by 100%.
Reduced Overall Costs: Replacement frequency decreased by 60%, and downtime losses reduced by 40%.