What is the processing technology of cold drawing machine included

The newly launched continuous stretching and bending cold drawing machine combines the characteristics of continuous tension cold drawing machine and roll cold drawing machine. Under the combined action of tension roller stretching and continuous alternating bending of bending roller, the strip undergoes plastic extension to obtain straightening process.

During the operation of the cold drawing machine, the straightening process involves causing the strip under tension to undergo severe bending by the bending roller. Due to the combined effect of bending stress and tensile stress, the strip undergoes elastic-plastic elongation deformation, thereby eliminating the three-dimensional shape defect. Subsequently, the residual curvature is flattened by the straightening roller.

The function of the bending roller causes plastic extension deformation on one side of the strip steel, resulting in uneven stress across the entire cross-section. According to this deformation principle, the tensioned strip steel needs to pass through at least two bending rollers for uniform extension of the entire plate surface, and then pass through a straightening roller to redistribute and balance the residual stress. In order to meet the straightening needs of steel strips with different thicknesses, two sets of bending straightening rollers need to be set up.

The cold drawing of continuous stretching and bending cold drawing machine refers to the process of drawing materials at room temperature in order to achieve a certain shape and mechanical properties. Cold drawn products have the advantages of high dimensional accuracy and good surface smoothness compared to hot forming.

The main reasons for the occurrence of straightening damage in steel are the large amount of wear on the straightening hole pattern, which is not replaced in a timely manner, resulting in a deterioration of the surface quality of the steel; The straightening roller contacts the surface of the steel with foreign objects, which press into the surface of the steel during the straightening process, resulting in surface scar defects on the steel; The misalignment of the straightening roller holes results in obvious straightening marks on the surface of the steel. To avoid correcting defects, measures taken include timely replacement of straightening rollers, frequent inspection of roller surfaces for foreign objects, and frequent alignment of hole patterns.

• Previous:Verification of Methods for Extending the Life of Cold drawn Tube Pulling Machine Chain
• Next:No more!