3. The specifications are stable. In the whole process of forming, the contact surface between the plastic machinery and equipment of the plastic parts and the grinding tools of the hardware die-casting factory is more reliable than the specifications of the part of the leaving grinding tools. If the thickness of the raw material must be changed in the future because of the bending stiffness of the raw material, it will cause the conversion of the male mold to the male mold. The standard tolerance of plastic parts cannot be less than 10% of the shrinkage.

4. The surface layer of plastic parts, as far as the forming raw materials can be wrapped, the surface layer structure that the plastic parts can meet should be formed at the point where it touches the abrasive tool. The smooth side of the plastic part does not have to touch the surface of the abrasive tool, if it will. Just like the selection of male molds to manufacture bathtubs and laundry tubs.

6. Folding and deformation, plastic is easy to fold (such as PE), and some plastic parts are easy to deform. No matter how to prevent it, plastic parts are deformed in the industrial aluminum refrigeration process. Under such standards, it is necessary to change the appearance design of the shaped abrasive to accommodate the geometrical errors of the plastic parts. For example: although the wall of the plastic part remains vertical, its standard management center has been offset by 11mm; the tool base of the high grinding manipulator can be pulled to adjust the amount of retraction of this type of deformation.