1. In order to ensure the basic strength requirements, it is necessary to install the cement foundation with ductile iron grate before; Ductile iron Grating.
The surface of the type (core) is loose; The pressure of the core is too high or too low; The exhaust of the mold is not smooth; The mold runs sand due to the large gap of the box surface;
Mechanical design engineers should know that pressure casting (referred to as die casting) is a kind of casting.
What's the difference between cast iron and cast steel?