Automobile Girder Steel’s Processing Methods and Precautions

2020年7月14日关作者 powerson metal

Automobile Girder Steel's Processing Methods and Precautions

Automotive girders high-strength steel with high strength, good processing bending performance, can be suitable for processing beam parts. The processing methods involved in the girders are shearing, punching, punching, bending, roller pressure, and so on. With the increase of strength, the plasticity and forming limit of high-strength steel with automobile girders have decreased, and parts should be considered in the design.

Also because beam parts are easy to rebound and twist when forming, the use of high-strength steel, the trend will be more severe, mold design and even parts design to be considered.

At the same time, when high-strength steel shear, the shear gap is not suitable will cause the shear edge form is poor, when forming easy to crack, while the poor shear section follow-up will also become the source of fatigue cracking;If the mold or cutting edge materials not suitable, the cutting edge will be easily worn or even broken.

In the roller pressure and bending, we should consider the effect of bending fillets, bending angles, and edge shear quality.The use of large beam high-strength steel, forming and cutting force will also be greatly increased, must be re-checked stamping forming equipment tonnage and punch equipment tonnage meet the requirements.

Using beam high-strength steel, forming and cutting force will also be greatly increased, factories must re-check stamping forming equipment tonnage and punch equipment tonnage meet the requirements.

Comparison of stamping and roller pressure forming processing methods

Bend The recommended bend mold material hardness is 56 to 58HRC. The overbend angle that offsets the rebound can be calculated by increasing the yield strength by 100MPa by 1o for each increase in yield strength by reference to the process parameters of the 355MPa grade girder steel plate. Bending machine convex fillet radius R: (t for steel plate thickness);

Bend

The recommended bend mold material hardness is 56 to 58HRC. The overbend angle that offsets the rebound can be calculated by increasing the yield strength by 100MPa by 1o for each increase in yield strength by reference to the process parameters of the 355MPa grade girder steel plate. Bending machine convex fillet radius R: (t for steel plate thickness);

Shear and punching

700MPa grade high-strength girder steel plate shear and punching tool material hardness 58 to 60HRC 700MPa class high-strength girder steel cutting tool gap: The thickness of the steel plate is 5mm, about 8 to 10% of the thickness of the steel plate, when the thickness of the steel plate is 8mm, about 10.5 to 13% of the thickness of the steel plate.

分类目录steel