How to reduce deformation of high-precision metal convex and concave molds under long-term high-load use?
Publish Time: 2025-03-14
Reducing deformation of high-precision metal convex and concave molds is the key to ensuring product quality and production efficiency under long-term high-load use.1. Material selection and heat treatmentHigh-quality materials: Select materials with high strength, high hardness, high wear resistance and high toughness, such as high-quality alloy steel, high-speed steel or cemented carbide. These materials have better deformation resistance and can withstand greater loads.Heat treatment optimization: Through heat treatment processes such as quenching and tempering, the hardness and strength of the material are improved while maintaining a certain toughness. Quenching can form hard phase structures such as martensite and improve hardness; tempering can eliminate quenching stress and improve toughness. Pay special attention to the control of quenching temperature and cooling rate to avoid excessive internal stress and deformation.2. Design and manufacturing processReasonable design: Optimize the structural design of the convex and concave molds, such as using reasonable fillets, transition parts and reinforcing ribs to reduce stress concentration and deformation.Accurately calculate the size and tolerance of the mold to ensure the accuracy and stability of the mold during manufacturing and use.Precision manufacturing:Use high-precision manufacturing processes such as slow wire cutting and EDM to ensure the manufacturing accuracy and surface quality of the mold. During the manufacturing process, strictly control the processing temperature and cutting parameters to reduce thermal deformation and mechanical deformation.3. Use and maintenanceCorrect use: When using convex and concave molds, follow the correct operating procedures to avoid excessive impact loads and excessive operating temperatures. For molds that require lubrication, regularly add an appropriate amount of lubricant to reduce friction and wear.Regular maintenance: Regularly inspect and maintain the convex and concave molds, such as cleaning, grinding, and repairing, to keep them in good working condition. Pay special attention to the edge of the mold, and repair defects such as wear and chipping in time to prevent further deformation.4. Use advanced processing technologyMultiple cutting method: For large, complex or high-precision convex and concave molds, multiple cutting methods can be used to reduce deformation. That is, first rough out the general shape, then gradually carry out semi-finishing and finishing, and fully cool and relax after each processing to reduce internal stress and deformation.CNC processing technology: The use of CNC processing technology, such as CNC milling, CNC grinding, etc., can achieve high-precision processing and automated production processes, thereby improving the accuracy and stability of the mold.5. Improve working environment and conditionsControl temperature: During mold processing and use, maintain a suitable working temperature to avoid deformation caused by excessively high or low temperatures. A cooling system or heating system can be used to adjust the temperature to ensure that the mold works within a stable temperature range.Reduce vibration: Take measures to reduce vibration and impact during work, such as using shock pads, vibration isolators, etc., to reduce deformation of the mold caused by vibration.In summary, by optimizing material selection and heat treatment, design and manufacturing processes, use and maintenance, using advanced processing technology, and improving working environment and conditions, the deformation of high-precision metal convex and concave molds under long-term high-load use can be effectively reduced. The implementation of these measures will help improve the precision, stability and service life of the molds, thereby ensuring a steady improvement in product quality and production efficiency.
