Today, mold manufacturing equipment is fully automated mold preparation, getting rid of the past expensive and imprecise manual preparation methods. So, the contact angle, bearing length, parallel bearing diameter and the common center of the die can be controlled within the precise error range. These molds have longer service life, increased wire production, reduced machine downtime and reduced labor costs.

 

 

Because of the characteristics of tungsten carbide, such as high hardness, good wear resistance, bending strength and poor impact resistance, it is difficult to design and manufacture the tungsten carbide die. It is also a difficult problem for the development. Therefore, some practical experiences and methods in the design and manufacture of tungsten carbide are introduced for reference.

 

Several Issues to Be Considered:

(1) The selecting of the part. 1, The output should be large, which should be 350 thousand or more. 2, Structure setting. First of all, the reasonable stamping process is more important to stretch and bending die, and it is necessary to carefully analyze and examine the old structure. 3, In order to ensure the quality of parts, dimensional accuracy or special requirements. 4, The thickness of blanking parts should not be too thick

 

(2) Reasonable use of tungsten carbide dies. The most easily worn parts should be analysised. When necessary, the die blade is made of tungsten carbide. When the structure of the punch is weak, and it is difficult to process or fix, the rational tool steel and the tungsten carbide can be used together to make the mold manufacture and use most reasonable and economical. The terrace die of tungsten carbide tool steel is usually treated by soft nitriding after quenching.

 

(3) The structure of the concave and convex die. Under the permissible conditions of die processing, the mosaic structure is more economical, easy to process and easy to repair and so on.