The state of stamping parts in the production process is related to the materials and processes used in the stamping parts themselves and the machines and equipment used. 30-ton gantry high-speed punching machine factory The cause of hidden cracks in stamping parts, product quality stability is crucial to production, and it also has a direct impact on the service life and performance of the finished product.
The first and second reasons.
The heat temperature is too high
The material of the stamping parts is not resistant to high temperature. During the stamping process, the mutual impact and collision between the components have a large friction. Excessive friction generates heat. Excessive temperature causes hidden cracks in the material of the stamping parts. The materials of some stamping parts will expand due to excessive temperature, increase tensile stress, and deform and tear.
Basic conditions of metal raw materials
The purity, strength and quality of the raw materials do not meet the requirements. The materials are mixed with other debris or pores. Raw materials with insufficient strength cannot withstand the impact from the mold, and raw materials with insufficient toughness have insufficient resilience during processing. Insufficient strength and toughness are prone to cause hidden cracks. For example, the stamping hinge base, Hydraulic hinge base Buffer hinge base Hardware Metal base High speed punch press production line, generally the raw materials will choose corrosion-resistant and tough stainless steel alloy materials.
30-ton gantry high-speed punching machine factory The cause of hidden cracks in stamping parts
The third and third reasons
Excessive stamping speed
The stamping speed of the press is too fast, which causes the cracking of the metal stamping parts. The stamping speed is too fast, and the material is subjected to instantaneous impact, which cannot fully adapt to this rapid deformation. The internal stress increases sharply and is unevenly distributed, resulting in fine cracks inside the material. Under the premise of not greatly affecting the stamping production efficiency, slowing down the stamping speed can reduce the resistance of metal flow, reduce the stress inside the material, and reduce the defects of stamping parts.
Irrational sample design
The thick wall design of the stamping part is too thin, or the structural layout is too complicated. During the stamping process, the material needs to undergo precise plastic changes, including bending and stretching. When being stamped, it is subjected to excessive stress. Without sufficient support to resist bending and stretching stress, it is easy to cause the material to tear in the stress concentration area. Complex structural design is also easy to cause uneven stress distribution to the material and also easy to cause tearing.
Briefly describe the 30-ton gantry high-speed punching machine factory The cause of hidden cracks in stamping parts, in addition to the above reasons, there are other common reasons, such as inappropriate basic material conditions, internal defects of the workpiece, mold reasons, process problems, and the impact force generated by the punching machine at high speed will affect the internal structure of the metal material.
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