Reverse bending requirements and advantages of straightening methods for inclined roll levelers
In the process of production, the inclined roll straightening machine is mainly used for its round bars and straightening pipes. When the rolling mill on the equipment rotates and advances, each section of the steel pipe will be subjected to multiple elastic-plastic bending. The roll leveler finally eliminates bending in all directions and ovality of the section.
The skew roll straightening machine is a very effective straightening method for rolled pieces with a circular section, so such equipment is widely used in drawing, rolling, welded pipes and other workshops. The roll surface will exhibit a certain curved shape.
During the operation of the oblique roll leveler, the rolling stock will rotate and move axially under the drive of the straightening roll. During operation, the screw will move forward, and the rolling stock will effectively pass through the staggered arrangement. The straightening rollers constitute several elastic-plastic bending straightening units.
Many sections of the skew roll leveler will be reversed many times in the process of use. When a certain level of straightening is achieved, the rolling stock will be reversed in different directions during rotation, so that more straightening can be achieved. The original curvature of the direction.
When the rolled piece passes through the straightening rolls, the skew roll leveler will bend once every half a turn, so that the rolled piece is easy to get multiple elastic-plastic bending, so generally the number of rolls of the skew roll leveling machine is not much, which will constitute a l ~3 elastic-plastic bending elements, so that the required straightening accuracy can be achieved.
For the pipe, in addition to eliminating or reducing the curvature of the bending along the length direction, the shape of the equipment section is also straightened at the same time, so that not only is the pipe bending flattened at the contact point of the roller, It is also possible to adjust the distance of each pair of rollers to be slightly smaller than the diameter of the pipe.
