Plastic deformation of cold drawn tube

- Jun 04, 2020-

 When cold drawing, the steel pipe undergoes plastic deformation through a die of a certain shape and size under the action of force. At present, the drawing methods in production can be roughly divided into three types: reduced-diameter extubation, reduced outer wall extubation and reduced inner wall extubation. During cold drawing, the steel pipe occurs under the action of drawing force, positive pressure and friction The corresponding deformation mostly passes through the three stages of diameter reduction, wall reduction and sizing, and the corresponding stress is generated inside the deformation zone, in which the axial stress is tensile stress and the radial and circumferential stress is compressive. Tensile and bi-directional compressive stress states are the basic mechanical characteristics of the cold-drawn tube deformation process.