What Are The Preventive Measures For Welded Pipe Cracking?

In daily work and production, welded pipes stored for a long time should be inspected regularly, and the surface of the exposed welded pipes should always be kept clean, removed from dirt, and stored neatly in a ventilated and dry place indoors. It is strictly forbidden to stack them in open or humid places. Always keep the welded pipe dry and ventilated, keep it clean and tidy, and store it according to the correct storage method.

During installation, the welded pipe can be directly welded to the pipeline according to the connection method, and installed according to the position of use. Under normal circumstances, it can be installed at any position in the pipeline, but it needs to be easy to operate and inspect, pay attention to the flow direction of the stainless steel welded pipe medium, and the stainless steel welded pipe should be installed horizontally or vertically. Pay attention to the tightness of the welded pipe during installation to prevent leakage and affect the normal operation of the pipeline.

Going back to the processing of welded pipes, bending and stretching procedures for deep processing of welded pipes. In this process, cracking of welds is easy to occur and a large number of waste products are generated. In order to prevent similar problems from happening, it is necessary to use appropriate lubricants to have a significant effect on the drawing and bending of welded pipes.

Because the lubricant can form a film with certain toughness and elongation between the convex and concave dies, which is beneficial to the deep drawing and bending of the welded pipe. For welded pipe drawing parts with a large degree of deep drawing deformation and difficulty bending and forming, polyvinyl fluoride film can be used as a lubricant in actual production. Polyvinyl fluoride film has excellent tear strength, certain toughness, and elongation and is easy to clean.

After coating the dry film, the dry film can deform together with the blank during the drawing process, and can always separate the blank from the mold. In addition, the film itself has a certain porosity and a large number of fiber cracks, so it can also store a certain amount of lubricating oil, so the film is equivalent to a layer of dry film lubricant. This lubrication method can effectively isolate the deformed welded pipe from the surface of the mold, and the lubrication effect is good, which is conducive to improving the service life of the mold and the qualified rate of the finished product.