ERW (Electric Resistance Welded) Steel Pipe is used for various engineering purposes and available in various shapes, finishes, wall thicknesses and diameters. You may be wondering how to reduce the wear and tear of ERW Steel Pipe during production and ensure its quality? Let's continue reading together.
It can be seen from the analysis data of ERW welded pipe scrap that the roller adjustment process plays a very important role in welded pipe production. That is to say, during the production process, if the rolls are damaged or severely worn, the unit should promptly replace some of the rolls, or continuously produce a certain type of welded pipe in full volume, and the entire set of rolls should be replaced.
When replacing the welded pipe, the roller needs to be adjusted accordingly to ensure the quality of the welded pipe. On the contrary, if the rollers are improperly adjusted, defects such as distortion, lap welding, edge fluctuations, indentations, scratches, and even large ovality may occur on the surface of the welded pipe and pipe body.
The following introduces the operation method of adjusting the roller that should be mastered when changing the roller.
Generally speaking, the ERW pipe specifications should be changed and the entire set of rolls replaced. The steps to adjust the roller type are: first, pull the steel wire at the inlet and outlet of the unit out of the center line to adjust so that the hole pattern of each frame is on the center line, and weld the steel pipe manufacturer to make the forming line meet the technical requirements.
In order to ensure the welding quality of ERW welded pipes, the forming roller, guide roller, extrusion roller, and sizing roller need to be adjusted once after replacing the rollers as required, and then focus on adjusting the closed cell type, guide roller, and sizing roller. Squeeze roller. The function of the guide roller is to control the weld seam direction and bottom line height of the welded pipe, reduce edge extension, control the rebound of the edge of the tube blank, and ensure that the weld seam entering the extrusion roller is straight and without distortion.
In short, during the welding process of ERW welded pipes, when the welding machine is running at low speed, the pipe welding workers must pay close attention to the rotation of the rollers in each part of the welded pipe and adjust the position of the rollers in time. Ensure that the welding quality and process dimensions of welded pipes comply with specifications at any time.
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