How to adjust the square tube irregularity of the directly forming to square pipe mill It is necessary to adjust whether the square tube square is qualified by combining the size adjustment and the tube surface adjustment.

To understand the reason why the square tube is not square when adjusted by the directly forming to square pipe mill, it is necessary to combine the size adjustment and the tube surface adjustment. When the size and tube surface have been adjusted, if the angle is not right, the final vertical roller can be used for correction.

(1) If the vertical angle of the rectangular tube is greater than 90°, and the left and right angles are less than 90°, adjust the vertical roller so that the vertical angle of the rectangular tube is slightly less than 90°, which can reduce the upper and lower angle of the finished tube. Lower corner.

(2) If the left and right angles of the rectangular tube are greater than 90°, and the upper and lower angles are less than 90°, loosen the end vertical rollers appropriately, so as to increase the upper and lower angles of the rectangular tube with the last vertical roller hole.

(3) If the pipe surface is not flat or right-angled due to serious uneven wear of the pass, it is recommended to trim the roll pass.

The method of adjusting the directly forming to square pipe mill according to the different angles of observation of the rectangular tube and improving the irregular square tube is an important reason for judging the qualified quality of the rectangular tube.