The life of aluminum extrusion die has become the main bottleneck in the development of aluminum profile industry in China. The design and manufacturing cost of aluminum extrusion die accounts for about 20% of the total production cost. It is one of the key technologies for the aluminum extrusion extrusion industry with many variables and rapid development. It also involves materials, design, manufacturing, testing, mold repair, management and many other aspects, and is also one of the areas with great development potential.
Different aluminum alloy mold design use limit times are also very different, generally ranging from thousands to hundreds of thousands of times. This has a lot to do with the material and heat treatment of the mold, the material, shape and accuracy requirements of the aluminum alloy.
Regarding how to use this type of shunt mold more rationally, we can start from the following aspects:
1. Strict implementation of aluminum profile production process regulations
It must be carried out in strict accordance with the corresponding aluminum extrusion process. During the start-up process, the temperature of the middle section of the aluminum rod furnace is set at 530-550 °C, and the temperature of the outlet section is set at 480-500 °C. The holding time should be sufficient to ensure that the aluminum rod is warm and transparent (ie, the heart and surface are warm enough). Avoid the increase of the elastic deformation of the mold due to the difference in the temperature of the aluminum rod (the temperature of the core is insufficient), thereby aggravating the phenomenon of "biasing" and "different lengths", and even causing the plastic deformation of the extrusion die to be scrapped.