Solutions for High-frequency Pipe Crack
High-frequency pipes have many problems.The pipe crack is one of them.We will introduce the problem and its solution to you. (1) Characteristics Water penetration crack: crack width < 0.4 mm. The crack has caking traces. Spray with the shape of mist or leak when testing water pressure. Micro-crack crack: outer surface has visible microgrooves, and the inner surface is in good condition. There is no leakage phenomenon when testing pressure but it is crazed if being crushed or cold bending. (2) Causes 1) Low welding temperature (insufficient heat output, and fast welding speed). 2) Roller bearing loss or small strip cause insufficient extrusion force. 3) The sixth and seventh piece of guide roller blade are damaged, and crush the strip steel edge. 4) Strip steel edges have inclusions and its state of edge is unstable. 5) Weld reve...