aluminium alloys for pressure die casting_aluminium alloys for pressure die casting

(3) The influence of mould making on the linear shrinkage rate of castings: a. The influence of wax injection temperature, wax injection pressure and pressure holding time on the size of investment mold is obvious in the wax injection temperature, followed by the wax injection pressure, and the pressure holding time is guaranteed After the investment is formed, it has little effect on the final size of the investment. b. The linear shrinkage rate of wax (mold) material is about 0.9-1.1%. c. When the investment mold is stored, there will be further shrinkage, and its shrinkage value is about 10% of the total shrinkage, but when stored for 12 hours, the investment mold size is basically stable. d. The radial shrinkage rate of the wax mold is only 30-40% of the lengthwise shrinkage rate. The wax injection temperature has a far greater influence on the free shrinkage rate than the hindered shrinkage rate (the preferred wax injection temperature is 57-59℃, The higher the temperature, the greater the shrinkage).

Konklusion

Innovation through Technology

Low Volume Sheet Metal Stamping A Comprehensive Overview

7. Ejectors In some cases, ejector pins or plates are included to assist in removing the finished part from the die. They help ensure that the stamped component is expelled without damage, which is especially important in high-volume production.

4) During the degreasing and cleaning process, avoid bumps and damage the surface of the wax mold.