Metal stamping processes can be broadly categorized into two main types: separation processes and forming processes.
The separation process involves separating the stamped part from the blank along a defined contour line during stamping, while ensuring the quality of the separated section meets certain requirements. The forming process involves plastically deforming the stamped blank without damaging it, transforming it into the desired finished shape, while also meeting dimensional tolerances.
Based on the stamping temperature, there are two methods: cold stamping and hot stamping. This depends on the material's strength, plasticity, thickness, degree of deformation, and equipment capabilities, while also considering the material's original heat treatment state and final service conditions.
Metal stamped parts require anti-corrosion treatment during production to effectively prevent corrosion during use. The main methods include the following six:
Asphalt paint coating: Preheating the stamped part before painting improves the adhesion of the asphalt paint and accelerates drying.
Cement mortar lining with a special coating: This improves the corrosion resistance of the stamped part's inner lining.
The epoxy coal tar coating for metal stamping parts is a two-component coating with high adhesion and a very smooth surface.
Epoxy ceramic linings, due to their complex manufacturing process and high cost, have certain limitations in application. However, they possess high adhesion and a smooth finish, making them an excellent anti-corrosion coating for stamping parts.