People who engaged in metal stamping work may have seen metal stamping parts appear tearing crack and skew. Why the stamping parts will appear these? Because of the working procedure error or material inferior? KAIXIN Aluminum would tell you some common reasons.
There are many reasons for tearing crack and skew of metal stamping parts, including the following:
1. Design defects of flanging forming mold
The mold is a one-mold double-cavity, left/right part common, because the content of this process in addition to flanging, but also both shape forming content. Besides, the parts are particularly complex, narrow bending surface, forming requires the concave die pressing core is consistent with forming surface, etc. Resulting in mold structure conditions forming stroke is large, pressing area is small.
2. Insufficient execution of forming process parameters
In stamping process, the die, the press core and the parts of both must be tightly fitted together. Forming by Press the plate plastic deformation when the slide of machine tool. The processing technicians did not timely adjust the pressure of the machine tool in this stage according to the requirements specified in the process, or at the handover of each shift, there is no mutual communication of the pressure stability information of the machine tool, resulting in the unstable quality of the parts
3. There are errors between mold processing and drawing design
If clearly marked to be processed out of the guide area. However, due to the complex surface of the stamping parts, the guide surface is machined after the casting is formed, resulting in the gap error between the machining surface and the guide surface of the concave die, and the left/right oscillation of the pressing core occurs in the normal operation of the mold.
Before forming parts, positioning by the pressure in the powder core plane positioning pin and hole, so it requires pressure core material in stamping forming must guarantee the stable, reliable, and correctly guide slide, otherwise will be instability in forming parts, so that the pressure is the core and the die wall extrusion, collision caused by stamping tensile stress, when more than ultimate strength of the material, causing a tear parts, deflection is not straight.
There are three main reasons for tearing crack and skew of metal stamping parts. In addition, there are also many other factors affecting the metal stamping parts.
Related products: Metal Components Group Stamping, OEM Stamping Parts