In the die casting industry, the quality of the mold directly determines the quality of the product and production efficiency. High-quality die casting molds can produce precision and perfect looking castings, but wear, cracks and aging problems are inevitable after prolonged use. Therefore, mastering the repair technology of die casting mold is very key to extending the service life of die and maintaining the stability of production line. We will introduce in detail how to effectively restore and improve the performance of the mold through professional repair technology.

The repair of die casting mold first requires a comprehensive inspection and evaluation of the mold.

This includes checking the dimensional accuracy of the mold, the condition of the surface, and whether the internal structure is intact. The use of advanced equipment such as 3D scanning technology and X-ray flaw detection can accurately identify the degree of damage and potential defects of the mold, laying the foundation for subsequent repair work.

Next, cleaning and pre-treatment are key steps in the repair process.

The surface of the mold needs to be thoroughly cleaned to remove oil, rust and original coating. Then, the method of sandblasting or chemical treatment is used to make the mold surface reach the roughness suitable for painting or welding. This step ensures that the repair material is well integrated with the surface of the mold.

For minor wear or scratches, laser cladding technology can be used to repair. This technique uses a high-energy laser beam to form a molten pool on the surface of the mold while filling it with a specialized metal powder to restore the size and shape of the mold. Laser cladding not only has high repair precision and small heat-affected zone, but also significantly improves the hardness and wear resistance of the die surface.

If there is a large crack or damage to the mold, it is necessary to use welding repair technology. Selecting the right welding material and preheating and post-heat treatment process is crucial to prevent welding deformation and stress concentration. The welded mold also needs to be machined to restore its exact geometry.

In addition, surface coating technology is an effective repair method for the sliding mating surface and ejection system of the mold. By applying a wear-resistant coating, such as a CVD (chemical vapor deposition) or PVD (physical vapor deposition) coating, the sliding properties and corrosion resistance of the mold can be significantly improved, thus extending its service life.

In the repair process, attention should also be paid to the inspection and maintenance of the cooling and heating system of the mold.To ensure that the cooling channel is unimpeded, to ensure that the mold can effectively dissipate heat during the production process, which is of great significance to stabilize the mold performance and ensure product quality.

In order to ensure that the repaired mold can achieve the best performance, strict quality inspection must be carried out.This includes dimensional inspection, pressure testing and actual casting tests. Only after passing these tests can the mold be put back into production.

Finally, the development and implementation of the mold regular maintenance plan is also an important measure to extend the service life.

Through regular inspections and necessary preventive maintenance, potential problems can be discovered and resolved in a timely manner, reducing the occurrence of major failures.

In summary

The repair technology of die casting mold is a comprehensive technology, involving inspection and evaluation, clean pretreatment, laser cladding, welding repair, surface coating, cooling system maintenance and quality inspection. By mastering these technologies, we can not only extend the service life of the mold, but also improve the stability of production and product quality.