There are many types of products in the mold industry, of which the stretch mold is one of the higher technical content. The reason why the drawing mold is difficult is that 1, the calculation of the design, and the test work 2 after the mold design is completed.

For designers, in order to design a reasonable tensile mold structure, they must accumulate considerable design experience.

The qualification of the tensile part is not related to the material itself. The choice of the press cannot be related, and the lubricant is also an important factor:

Stretch selection

08 steel is the main representative. Generally, the cold die series such as 08Al, 08, 08F, 10, 15, 20 are used for the drawing die. For the designer, a reasonable selection of materials has made the die half successful.

2. Calculate opening size

For rotating bodies and cylindrical deep-drawn parts, the calculation method of the opening size is based on the principle that the volume of the material is unchanged. Even if the material becomes thin during the stretching process, the total volume will not change.