Two typical problems with molds
Published Time:
2026-08-19
The mold cavity is subject to long-term melt erosion, workpiece demoulding friction, and debris extrusion;
Problem 1: Mold wear and cavity damage during the molding process lead to continued deterioration in product appearance and size.
Reasons: The mold cavity is subject to long-term melt erosion, workpiece demoulding friction, and debris extrusion; the parting surface is frequently closed and impacted; the steel has insufficient hardness and lacks surface strengthening.
Derived defects: The product has enlarged edges, surface strains, and critical dimensions gradually exceed tolerances.
Problem 2: Mold cooling is uneven, resulting in product deformation and dimensional instability.
Reasons: Unreasonable water transportation layout, blocked waterways, large differences in mold temperature distribution; lack of effective cooling in local wall thickness areas.
Derived defects: Plastic parts shrink inconsistently, warp, twist, and uneven assembly gaps.
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