Why does the surface polishing of the mold cavity fail to achieve a mirror effect?
Published Time:
2026-04-28
The mold steel is impure, has insufficient hardness, and has impurities and pores that affect polishing.
1. The mold steel is impure, has insufficient hardness, and has impurities and pores that affect polishing.
2. The early milling and electrical discharge machining lines are too deep, and it is difficult to completely remove the knife lines and spark lines by polishing.
3. In the polishing process, the mesh number of sandpaper and whetstone is too large, and scratches are caused by improper polishing techniques.
4. Polishing tools and abrasive pastes contain many impurities, and hard particles are brought in during operation, causing surface scratches.
5. The sharp corners and narrow grooves of the mold are not polished properly, leaving traces easily.
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