In the case of small deformation, the wall thickness deviation is small, and the surface roughness of the thick wall spiral steel tube decreases gradually.The large deformation of the blank wall thickness deviation will affect the wall thickness deviation of the spiral steel tube.
The researchers found that the higher the elongation, the greater the hardness, the higher the strength of the steel tube.Good overall performance.
Spiral steel pipe rolling when the flow of the material in a band, small deformation of rolling material flow beam shaped, and the tao time and subsequent heat treatment conditions between rolling technology, under the condition of same sufficiently large deformation proceeds of tubing organization distortion is more serious.
The effect of small deformation on the anisotropy of the thick-walled spiral steel tube is small.The anisotropy of mechanical properties in multipass rolling has certain fluctuation.
