In the process of forming the formation of spiral buried arc tube rolling tube, one of the common forming process defects has a variety of pipe diameters. What are the causes of this defect? Let's take a look below.
(1) Bringing steel "crescent bend" is the main factor that causes the wrong edge. During the production process, in order to ensure that the pipe diameter is appropriate, in order to ensure that the pipe diameter can only be eliminated by the wrong side.
(2) The process parameters are not appropriate, resulting in uneven deformation of the delivery side and the free side.
(3) The formation of formation is too tight. If the steel running bias will increase the steel from the entrance of the molder, and it will promote the large angle of the rear axle, so that the forming seam bite is too tight and causes the wrong edges.
(4) The position of the welding cushion roller is incorrect. The welding cushion roller is generally biased towards the 1#molding roller 10 ~ 15mm. If the eccentric distance is too small, it is easy to cause the wrong side. If the eccentric distance is too large, it is easy to cause the wrong side.
(5) Welding is also a factor that causes the wrong side. Long -distance severe welding bias will cause errors or seams, so control the welding bias.
(6) If the delivery of steel is not handled, it will cause the band of steel to run off, which makes the edge of the belt steel thick, which will cause the wrong edge.
(7) Unexplained with steel width or the edge of the steel is not good, it is easy to cause wrong edges.
(8) The surface of the steel with steel is not smooth, and there are large waves or hard bends that are very easy to cause wrong edges. Therefore, it is necessary to improve the flat effect as much as possible.
(9) Pre -bending roller type is not suitable or the pre -curved volume at both ends of steel is not suitable, and it is easy to cause wrong edges. Therefore, it is necessary to effectively adjust the pre -curved amount.
Therefore, in order to effectively control the pipe diameter and the wrong edges within the appropriate range, it is necessary to minimize the "crescent bend" of the steel with steel as much as possible, strictly control the quality of the tartar opponent, and carefully control the delivery of the steel to avoid the "crescent crescent Crescent crescent bend".
