Common problems and solutions in the stamping process of stainless steel stamping parts


Release time:

2022-09-14

The scratches on the surface of stainless steel stamping parts are mainly due to the relative movement between the workpiece and the surface of the mold. Under the action of a certain pressure, the blank and the local surface of the mold are directly rubbed, and the deformation heat of the blank causes the blank and metal chips to be deposited on the surface of the mold. , causing scratches on the surface of the workpiece.

Common problems and solutions in the stamping process of stainless steel stamping parts

Common problems and solutions in the stamping process of stainless steel stamping parts:

1. Scratches are formed on the surface of stainless steel stamping parts

The scratches on the surface of stainless steel stamping parts are mainly due to the relative movement between the workpiece and the surface of the mold. Under the action of a certain pressure, the blank and the local surface of the mold are directly rubbed, and the deformation heat of the blank causes the blank and metal chips to be deposited on the surface of the mold. , causing scratches on the surface of the workpiece.

2. The workpiece of stainless steel stamping parts is cracked

The cold work hardening index of austenitic stainless steel is high, and the martensite phase will be induced by transformation during deformation. Martensite is relatively brittle and therefore prone to cracking. In addition, with the increase of the amount of deformation during plastic deformation, the induced martensite content will also increase with the increase of the amount of deformation, and the greater the residual stress is, the easier it is to crack during processing.

3. The die of stainless steel stamping parts wears too fast

The mold gap of stainless steel stamping parts is too small, the alignment of the convex and concave molds is not good, and the mold base and mold guide components and the insufficient precision of the turret sleeve will cause mold wear. In addition, continuous punching of the same die for a long time will cause the punch to overheat, and multiple local punching, such as nibbling, punching angle or lateral force during shearing, will cause the punch to deviate to one side, causing serious die wear.

4. The stainless steel stamping die is stripped

Factors such as the sharpness of the cutting edge of the stainless steel stamping die, the entry modulus of the die and whether the clearance of the die is reasonable will all lead to the problem of the die with material. In addition, if non-specialized stamping oil is used, problems such as gumming and viscosity increase due to oil oxidation will also occur.

5. Quality of stamping oil used for stainless steel stamping parts

The selection of stainless steel stamping oil is extremely important. Stamping and drawing oil with good performance contains sulfur and chlorine compound additives, which can ensure the performance of extreme pressure machining and avoid problems such as hardening, deformation, burr, and cracking of the workpiece. At the same time, for the ease of cleaning of the finished workpiece, a low-viscosity stamping and drawing oil should be used as much as possible.

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