At present, zinc square tubes are widely used. Due to the galvanized surface, the anti-corrosion performance can reach a good standard, and the anti-corrosion effect can play a good role. Why is there residual prestress on the rectangular pipe?

The square tube surface is galvanized, which has good weather resistance and corrosion resistance. It not only has high use strength, but also avoids aging.

After galvanizing, it can be used normally in various environments, which can not only expand the scope of use, but also improve the stability of the project and meet the requirements of various construction projects.

After treatment, the prestress remains on the surface. The residual compressive stress on the square tube can improve its own wear resistance and fatigue resistance of tensile stress, while the residual tensile stress on the square tube is actually opposite to the compressive stress.

Residual stress caused by cold plastic deformation. During the processing of galvanized square tubes, due to the cutting force, the processing surface of square tubes is subject to strong cold plasticity, resulting in deformation.

Because the base metal of the square tube is in an elastic state at this time, the plastic deformation caused by extrusion and friction of the square tube surface on the tool face.

After the cutting force disappears, the metal of the base tends to recover, and the rectangular tube has been restricted by the forming surface, so the base cannot recover its original shape, so the stress will remain on the surface. Square and rectangular pipes will have residual prestress after processing.

That's it Tangshan square tube manufacturer The reason why Rectangular Pipe Upper residual prestress? If you have any other questions, please contact us!