About the selection requirements of stamping materials
The material used for blanking should have sufficient plasticity and low hardness to improve the quality and dimensional accuracy of the blanking section. Among them, the punching machine of soft materials is better, the quality of the punching section of hard materials is poor, and the brittle materials are easy to tear.
The material used for winding should have sufficient plasticity, low yield strength, and high elastic modulus. Among them, the stamping material with good plasticity is not easy to bend and crack, and the material with low yield strength and high elastic modulus has less resilience.
The material used for stretching should have better plasticity, lower yield strength and hardness, and larger plate thickness directivity coefficient. Among them, the material with high hardness is difficult to draw, and the yield ratio is small or the plate thickness orientation coefficient is large. The material is easy to draw.
Electronic stamping parts processing manufacturers have relatively strict requirements for material thickness deviations in the stamping process. This is because the inevitable die gap is suitable for stamping materials with a certain thickness. If the same die gap has a very large difference in the thickness of the stamping part, the quality and accuracy of the workpiece will be low, and the die will be easily damaged. Especially in the process of deep drawing, flanging and winding, the uneven thickness of the machining material may cause the appearance of garbage. When large workpieces are reshaped, the press may even be damaged.
The machine performance of metal materials depends not only on their chemical composition, but also on the microscopic layout of the hardware precision stamping parts. Generally speaking, if the structure of metal is thin, the plasticity is large, which is beneficial to the deformation of the material during stamping. However, the microstructure of the metal is too fine, and the strength and hardness of the material are improved.
Basically with many changes here, stamping parts manufacturers can obtain improvements, such as drawing feature test, bulging feature test, etc. to test the stamping characteristics of the raw materials to ensure the quality of the products and the high rate of compliance. The key to stamping is classified according to the processing technology. The separated process is also called cold stamping, which can be divided into two types: the process process and the forming process.
It is necessary to process metal stamping parts, furniture parts, high and low voltage switch parts, automotive stamping parts, large, medium and small drawing parts; custom-made special-shaped drawing parts, stainless steel drawing parts, injection molding and die casting parts; various battery continuous films, rectifier housings, Various types of hardware such as large and small sheet metal parts, heat sinks, pins, computer case shells, springs, etc.
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