• 2026-08-28
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Secondary Precision Correction Machining: Tolerance Calibration & Repair Processing for Used Mol

After long-term mass production, precision mold cores, inserts and moving parts will inevitably experience wear, micro-deformation and precision attenuation. Secondary precision correction machining is an essential technical service for mold maintenance and precision recovery, which can repair worn plastic mold parts, restore original mold tolerance and avoid repeated mold opening and high replacement costs.

We provide professional mold secondary correction, precision repair and tolerance calibration services for all kinds of used precision molds. Whether it is core wear, dimensional deviation, surface scratch or assembly gap deviation, our fine correction processing can restore precision mold components to factory-level precision performance.

Problems of Attenuated Mold Precision in Mass Production

Long-cycle injection molding causes continuous friction, high-temperature impact and pressure extrusion on mold parts. Slight core wear leads to product flash and dimensional enlargement; insert gap enlargement causes unstable assembly size; surface scratches lead to defective product appearance. Most aging molds cannot continue stable production due to accumulated tiny precision errors.

Direct replacement of integral mold cores is costly and time-consuming, while unprofessional manual repair cannot guarantee tolerance consistency, resulting in repeated quality problems after mold restarting production.

Our Secondary Precision Correction & Repair Technology

We conduct full dimensional detection and error analysis on old plastic mold parts before correction. For worn and deformed positions, we adopt precision welding repair, local fine grinding and micro-cutting correction to accurately compensate tolerance loss.

We recalibrate the assembly clearance, flatness and positioning accuracy of all matching components to ensure that the corrected precision mold components have the same fitting precision and operation stability as new molds. After correction, we perform mold trial and fine-tuning to guarantee stable molding quality.

Cost-Saving Value of Mold Secondary Machining

Professional secondary precision correction machining efficiently restores mold precision and prolongs mold service life, avoiding expensive overall mold replacement costs. It greatly shortens mold maintenance cycle, quickly resumes mass production, and provides an economical and efficient solution for long-term operation of precision injection molds.