1. Reasonable selection of materials: Select wear-resistant and corrosion-resistant materials based on product characteristics and usage environment, such as high-speed steel, hard alloy, hot work steel, etc.
2. Optimization design: When designing, consider the load, stress distribution, and wear situation, and pay attention to structural rationalization to avoid stress concentration, improve the bearing capacity and service life of the mold.
3. Surface treatment: Surface treatment methods such as oxidation, hardening, and chrome plating are used to improve the wear and corrosion resistance of the mold, thereby extending its service life.
4. Maintenance: Regularly inspect the mold, promptly repair any problems found, and improve repair efficiency. Timely cleaning and lubrication to reduce corrosion and wear.
5. Temperature control: Excessive temperature during injection molding or casting process can cause mold damage. The temperature should be controlled within a reasonable range to avoid issues such as thermal fatigue and creep deformation.
6. Control material wear: Avoid using filling materials containing high hardness substances to reduce cutting and friction on the inner wall of the mold cavity. Recycled materials can also exacerbate cavity wear and should be used as little as possible.
7. Reduce external impact: Thin walled or irregular products will generate significant suction during injection, and require additional tensile force during demolding, which may lead to cavity fatigue cracking. Efforts should be made to minimize the impact of these impact forces on the mold.
8. Anti corrosion treatment: Chromium plating is currently the most widely used and effective surface treatment technology for molds. By generating a microscopic Cr2O3 oxide layer on the cavity wall, the wear resistance and corrosion resistance can be significantly improved, and the lifespan can be extended.
9. Regular maintenance: After long-term use, the mold cavity will inevitably experience a certain degree of wear and deformation. In order to extend the service life, it is possible to compensate for the thinning of the cavity by assembling and adjusting the plunger components. When the deformation exceeds the tolerance range, precision machining is required to restore the original accuracy of the mold. This belongs to the maintenance and updating of the mold, which can continue to extend its service life.
10. Controlling cavity pressure: For thin-walled injection molds, the magnitude of cavity pressure is the first factor to be considered. Inadequate technology from injection molding machine manufacturers may lead to problems such as excessive mold load and a significant decrease in machine service life. Therefore, attention should be paid to high-speed and low-voltage technology, in order to increase the profit margin of the product and reduce the maintenance costs in the later stage without changing the product quality.
