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Mold Maintenance And Care: Essential Tips for Longevity

Views: 0     Author: Site Editor     Publish Time: 2025-05-26      Origin: Site

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1. Daily Maintenance

① Cleaning

  • Remove residual material (plastic, metal scraps, etc.) after each production run.

  • Use soft brushes, copper tools, or air blowers to avoid surface scratches.

  • For precision molds, consider ultrasonic cleaning for deep contamination.

② Lubrication

  • Apply high-temperature grease (e.g., molybdenum disulfide) to guide pins, ejector pins, and sliders.

  • Avoid over-lubrication, which can attract dust and contaminate parts.

③ Rust Prevention

  • Spray anti-rust agents (e.g., WD-40) before storage, especially in humid environments.

  • For long-term storage, use desiccants or rust-proof paper.


2. Periodic Deep Maintenance

① Disassembly & Inspection

  • Fully disassemble the mold every 10,000–50,000 cycles (depending on usage).

  • Check for:

    • Wear & scratches on cavities and cores.

    • Misalignment in guide pins and ejector systems.

    • Cracks or deformation in critical areas.

② Repair & Replacement

  • Minor scratches: Polish with diamond paste or fine-grit sandpaper.

  • Severe wear: Replace ejector pins, springs, or bushings.

  • Cracks: Consult a specialist for welding or re-machining.

③ Cooling System Maintenance

  • Flush water channels with descaling agents (e.g., citric acid solution).

  • Check O-rings and seals for leaks.


3. Proper Storage Practices

  • Environment: Store in a dry, temperature-controlled area (20–25°C, humidity <60%).

  • Position: Keep molds closed and supported to prevent warping.

  • Protection: Use mold storage racks (never stack directly).


4. Operational Best Practices

  • Correct Setup: Align molds properly with machine platens.

  • Parameter Control: Follow recommended pressure, temperature, and cycle times.

  • Avoid Damage: Never force ejection or use metal tools to remove stuck parts.


5. Maintenance Tracking & Management

  • Keep records of production cycles, cleaning, and part replacements.

  • Use barcode/RFID tracking for automated maintenance scheduling.

  • Set alerts for critical inspections (e.g., after 100,000 cycles).


Common Issues & Solutions

ProblemSolution
RustLight rust: Polish with 800# sandpaper. Severe rust: Re-chrome plating.
StickingIncrease draft angles or apply mold release agents.
Poor CoolingCheck for clogged channels or insufficient flow.

Final Thoughts

A well-maintained mold can last 30–50% longer, reducing downtime and repair costs. Preventive maintenance is always cheaper than emergency fixes!

Need professional mold repair? Always rely on certified technicians for complex issues like EDM repairs or precision regrinding.



Yixun is the China first generation mold maker, specialize in mold and moulding, provide one-stop plastic manufacturing service, feature in building medical and healthcare device tooling.
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