Actually, stamping parts have strict requirements.

  In order to meet the precision requirement of stamping parts in Dalian, the number of stamping processes needs to be determined by stamping process, because it is not only related to material properties, drawing height, drawing steps and other factors, but also related to drawing diameter and material thickness. For very difficult calendering parts with tension and deep calendering stresses, such as inner door panels, side panels and wing panels.

  There are strict requirements for reliability and speed of forming, and high strength sheet can be stretched. When choosing stamping oil for carbon steel sheet, the first thing we should pay attention to is the viscosity of drawing oil. The better viscosity is determined according to the process difficulty and the feeding method and degreasing conditions. Pressing oil containing sulfur-chlorine compound additives is generally used to ensure extreme pressure performance and avoid burrs and cracks on the workpiece.

  According to the temperature of stamping, there are two ways: cold stamping and hot stamping. This depends on the strength, plasticity, thickness, deformation degree and equipment capacity of the material, and the original heat treatment state and service conditions of the material should be taken into account. Inspectors need to wear touch gloves to touch along the stamping part vertically close to the surface of the stamping part. This inspection method depends on the experience of the inspectors.

  If necessary, the suspicious area can be polished and verified by oil stone, but this method is an effective and rapid inspection method. Then use a clean brush to uniformly apply oil in the same direction to the entire outer surface of the stamping part. Put the finished oil stamping parts under strong light for inspection, and it is suggested that the stamping parts be erected on the body position. With this method, it is easy to find tiny pits, hollows and ripples on stamping parts.

  The cost and life of die manufacturing are important factors that affect the cost and quality of stamping parts. Die design and manufacturing need more time, which prolongs the production preparation time of new stamping parts. Especially in the process of cold forging stamping, the temperature will rise very quickly. Lubrication products must be added. If no lubrication is used, direct stamping, welding-assembly, parts without oil on the surface can be easily welded and assembled. Research and practice show that EMECO metal inert gas arc welding.