When the used ERW tube mills is used to make welded pipes, the judgement of the qualified quality of the welded pipe depends on the control of the squeeze roller, so the control of the squeeze roller is very important. There are many ways to control the squeeze roll, and "up and down two" is one of the squeeze roll methods.

Although the "up one down two" three-roller extrusion method has the characteristics of independent adjustment, three-roller unified adjustment, overall rotation and easy adjustment of the It covers 120 degrees, and the diameter and load capacity of each roller is effectively reduced, which avoids many of the disadvantages of the two-roller and the top three-roller. However, it is still impossible to avoid the existence of the independent top-roller three-roll squeeze mode. Shortcomings. Because of the small roll diameter of the used ERW tube mills, its bypass current is much smaller than that of the "two on one side" top roll extrusion device. However, equipment manufacturing also has the problems of relatively high technical requirements, processing accuracy requirements and relatively high cost, and relatively difficult adjustments. Only a few manufacturers currently use it.

The above is the method of adjusting the squeeze roll of the used ERW tube mills "up one down two", the next issue will introduce the method ④ "two top rolls and two side vertical rolls". If you need it, you can pay attention to the method in the next issue. At the same time, if you need used welded pipe equipments, please contact us. You only need to inform us of your pipe-making needs, and our company will provide you with used welded pipe equipments that really suits your needs.