Wanjiang hardware stamping parts manufacturer, what is the reason for the cracking + 3 million punching next day production capacity

The production staff in charge of the Wanjiang hardware stamping parts manufacturer said that when the tensile stress on the wall of the cylinder exceeds the strength limit of the material, the product will crack, and the crack generally appears at the wall of the cylinder slightly above the round corner of the punch. The following Xiaoshuo takes everyone to understand the causes of product cracking: 　　 The factors that affect the product's cracking are: the tensile properties of the material, the diameter and thickness of the material, the drawing coefficient, the fillet radius of the concave and convex mold, and the blank holder force. , Coefficient of friction, etc. The radius of the rounded corners of the concave and convex molds is too small and too sharp, and the product is easy to crack. The general method of repairing the mold is to find a way to enlarge the rounded corners, make the rounded corners a little smoother, and polish them. It is also possible to add oil during production, especially the special oil for stretching, which is very useful. When designing a stamping die, you can increase the fillet as far as possible if the customer’s product requirements allow it. Don’t make it too sharp. Some designs are not well understood. The designed drawing die cracks very much during the trial. Awesome.　　When stretching, the necessary lubrication is used, which is conducive to the smooth progress of the stretching process, and the thinning of the cylinder wall can be changed. However, it should be noted that lubricant can only be applied to the working surface of the concave mold, and never lubricate the surface of the convex mold and the material, because there is a favorable friction between the convex mold and the surface of the blank, which can prevent the material from sliding and pulling. Cracking and thinning. Hardware, 15 years of focus on Wanjiang hardware stamping parts manufacturer, 20,000+ sets of customized stamping die production experience, monthly processing capacity of 100+ sets of molds, hundreds of precision processing production equipment, daily production capacity of 3 million punches, silk-like stamping accuracy Up to 0.01mm, the raw materials are imported and the original national standard factory, and 16 quality inspections are strictly controlled. It can quickly solve time-critical problems for you, solve stamping accuracy problems, and solve production quality problems. Choose, choose rest assured!