Views: 18 Author: Site Editor Publish Time: 2020-08-03 Origin: Site
Mechanical scratches is a linear scratch on the surface of the die casting during core-pulling and push-out.
Causes of mechanical scratches mainly include the following aspects:
Demoulding agent lubricity is not good, the mold temperature exceeds the adhesion temperature of demoulding agent, coating method is improper, coating quantity is not enough or lubrication is not good
The drawing Angle is not enough, in the case of the drawing Angle is small, the friction resistance of the drawing will be too large, and mechanical scratches will occur
Die processing is not good, improper operation, bruise or die cracks and other reasons.
The solution to mechanical scratches of die casting is mainly aimed at the following aspects:
Adjust mold temperature (set within the range of adhesive temperature of mold release agent)
Adjust the die casting shape and demoulding Angle
Fine polish the mold surface (mold facade)
When polishing the core and mold, it is necessary to follow the drawing direction and mold opening direction.
