Knowledge

Rolling processing is a kind of chipless processing, which uses the plastic deformation of metal at normal temperature to smooth the microscopic unevenness of the workpiece surface to achieve the purp

The cylinder tube is processed by rolling. Due to the residual compressive stress remaining on the surface layer, it helps to close the micro-cracks on the surface and hinder the expansion of erosion.

Improve surface roughness. Correct the roundness, the ellipse can be ≤0.01mm. Improve the surface hardness to eliminate stress deformation, and increase the hardness by HV≥4°.

Cylinder tube is a high-precision steel tube material after cold drawing or hot rolling. Because the inner and outer walls of the precision steel pipe have no oxide layer, withstand high pressure with

In the process of cold drawing, only the cold-drawing stress control is called single control, and the cold-drawing rate and cold-drawing stress applied simultaneously during cold drawing are called d

Introduced the use of plane strain theory, on the prestressed high rigidity full hydraulic cold drawing machine, through the special reduction of wall thickness tube drawing method, directly drawing t

For the steel pipe without pre-treatment, the drawing cannot be carried out due to the excessive friction coefficient between the surface of the steel pipe and the mold during cold drawing; only after

The cold drawn tube is drawn by a mold of a certain shape and size under the action of force. The dimensional accuracy and surface quality of the mold directly affect the dimensional accuracy and qual

The cold-drawn cylinder is made of hot-rolled tube. The selection of the material, specifications and quality of the hot-rolled tube directly affects the drawing process and the quality of the finishe

Cold drawn steel pipe, cold rolled steel pipe unit is a complete set of equipment for the production of pipes by cold processing methods of cold rolling, cold drawing or a combination of cold rolling

During cold drawing, the steel pipe undergoes plastic deformation through a die of a certain shape and size under the action of force. The drawing methods in production can be roughly divided into thr

The metal deforms plastically during cold drawing, and multiple slip systems start inside the crystal. The dislocation motion intercepts each other, causing dislocation jamming, and the dislocation so