Factors affecting the steel billet cutting machine 1、Axial pressure 2, axial clearance 3, radial clearance 4, shear rate 5, other factors
As we all know, the role of bar shearing machine is to cut the long bar, round steel or some other profiles to separate them into individual blanks, and then made into parts. However, the bar shearing machine may cause the quality problem of deformation and uneven section of the sheared parts when shearing, so the
Factors affecting the quality of its shear are as follows.
1, axial pressure
In the bar plastic shear, if the axial pressure increases will lead to increased hydrostatic pressure in the shear deformation zone, which is conducive to the enhancement of the plasticity of the metal material, the generation of shear cracks and prolong the plastic shear dislocation stage, thereby increasing the plastic shear bright band, reduce the fracture zone, improve the quality of the shear section.
2, axial clearance
The existence of axial clearance will lead to a significant reduction in hydrostatic pressure in the shear deformation zone, the plastic deformation zone is thus reduced, the fracture surface will increase, affecting the quality of shear.
3, radial clearance
The radial clearance between the bar and the mold also has a greater impact on the quality of shear.
4, shear rate
Generally speaking, the higher the shear rate, the better the section quality.
5、Other factors
Length to diameter ratio, shear form, temperature, the nature of the material and other factors have an impact on the shear quality.