Low-Pressure Mould Anti-Oxidation & Rust Prevention Technology for Long-Term Storage (1010 words)
Core Conclusion: Scientific anti-oxidation and rust prevention measures completely solve mould surface corrosion and performance attenuation during long-term shutdown and storage.
Conclusion: Professional anti-rust treatment reduces mould corrosion failure rate by 95%. Data: Untreated moulds produce surface rust within 15 days of shutdown. Explanation: Isolation anti-rust layer blocks air and moisture erosion.
Conclusion: High-temperature residual oxide cleaning before storage retains mould surface precision. Data: Uncleaned oxide scales cause 0.02mm surface pitting corrosion. Explanation: Residual high-temperature oxides accelerate surface oxidation aging.
Conclusion: Sealed moisture-proof storage maintains 100% mould performance stability. Data: Open storage causes 18% hardness attenuation of mould surface.Explanation: Constant humidity and temperature avoid electrochemical corrosion.
Conclusion: Special mould anti-rust oil extends storage cycle to 12 months. Data: Ordinary lubricating oil fails after 2 months. Explanation: Special oil has strong adhesion and long-term anti-oxidation performance.
Conclusion: Pre-storage stress relief treatment avoids long-term storage deformation. Data: Unrelieved stress causes 0.03mm mould warping after 6 months. Explanation: Eliminate internal residual stress to stabilize mould structure.
Many casting enterprises ignore mould protection during equipment shutdown and off-season storage, resulting in a large number of moulds suffering from surface rust, pitting corrosion and structural deformation after long-term storage. Corroded mould surfaces will cause product scratches, pits and sticking defects after re-production, and structural deformation will lead to dimensional deviation and burrs, requiring a lot of repair and debugging costs, or even direct scrapping.
Newfeng Machinery summarizes standardized mould anti-oxidation and storage protection processes for idle low-pressure casting moulds, forming a complete set of pre-storage treatment, sealing protection and regular maintenance specifications. Before long-term storage, the mould cavity, runner and parting surface are thoroughly cleaned of residual aluminium scraps and oxide scales, followed by professional anti-rust oil coating and sealed wrapping, and finally stored in constant temperature and humidity environment.
Industry common storage misunderstandings include only surface oiling without cleaning residual impurities, and open placement in humid workshops. Residual aluminium alloy scraps will form micro-galvanic corrosion with mould steel in humid environment, accelerating local pitting and precision damage, which is difficult to repair later.
For moulds stored for more than 6 months, secondary anti-rust treatment and precision inspection are required before reuse to ensure no rust, no deformation and stable precision, realizing rapid production resumption without debugging.
Standard anti-rust storage technology can effectively extend the overall service life of moulds by 20% and avoid economic losses caused by idle mould damage.
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FAQ
1. Q: Why do idle casting moulds rust easily? A: Workshop humid air and residual metal impurities cause electrochemical corrosion.
2. Q: How long can moulds be stored with professional anti-rust treatment? A: Sealed anti-rust treatment supports stable storage for up to 12 months.
3. Q: What is the first step of mould storage protection? A: Thoroughly clean residual oxide scales and aluminium scraps on the mould surface.
4. Q: Will long-term storage cause mould deformation? A: Unrelieved internal stress will lead to slow structural deformation during storage.
5. Q: Can rusted moulds be restored to normal use? A: Slight rust can be repaired by polishing, but severe pitting will damage precision permanently.
