Contact: Li Shijun (13940547998) with wechat
Contact: Li Ying (15502475265) with wechat
Tel: 024-25870279
Fax: 024-25870279
E-mail: 1412909433@qq.com
Postcode: 110025
Address: No.28-1, Zhenxing 7th Street, Hutai new town, Shenyang, Liaoning Province
Sales address: Gate 3, No. 32, Baogong North Street, Tiexi District, Shenyang City, Liaoning Province
website: en.sywhddy.com
As we all know, the function of the bar cutting machine is to cut the long bar, round steel some other profiles, separate them into individual blanks then make parts. However, the bar shear machine may cause the quality problems of deformation uneven cross-section when cutting. What are the factors affecting the shear quality? Let's take a look.
1. Axial pressure
In the plastic shear of bar, if the axial pressure increases, the hydrostatic pressure in the shear deformation zone will increase, which is beneficial to enhance the plasticity of metal materials, inhibit the generation of shear cracks extend the plastic shear deformation stage, so as to increase the plastic shear bright zone, reduce the fracture zone improve the quality of shear section.
2. Axial clearance
The existence of axial clearance will lead to a significant decrease of hydrostatic pressure in the shear deformation zone, thus the plastic deformation zone will be reduced, the fracture surface will increase, which will affect the shear quality.
3. Radial clearance
The radial clearance between the bar the die has a great influence on the shear quality.
4. Shear rate
Generally speaking, the higher the shear rate, the better the section quality.
5. Other factors
The length diameter ratio, shear form, temperature, material properties other factors have an impact on the shear quality.
