How to improve the wall thickness accuracy of reinforced 3pe anticorrosive steel pipe?
1. For the heating of the tube billet, it is necessary to pay attention to uniform heating, prohibit rapid temperature rise and fall, and keep the temperature rise and fall smoothly.
2. Use the centering roller to determine whether it is in place, and adjust the center axis and opening angle of the core-holding roller.
3. The rolling tools should be installed on the rolling line to ensure that the upper and lower roll distances are equal, and the left and right guide distances are equal.
Fourth, the mandrel of the rolling mill is processed by pipes with larger wall thickness. The pipes with uniform wall thickness can reduce the probability of deformation of the mandrel and improve the accuracy of the wall thickness of the steel pipe.
Fifth, improve the process, which can also improve the accuracy of the wall thickness and avoid the situation of intermediate thinning and the wall thickness exceeding the control range.