Stainless steel 304 metal hose using the actual effect?

An important aspect of stainless steel 304 metal hose is to remove the burr within the weld, due to the limitations of the space location, stainless steel 304 metal hose within the burr removal has been a technical difficulty. Therefore, from the welding technology to choose the appropriate welding method is an effective way to solve the problem, the production of small burrs within the welding method are DC welding method and square wave resistance welding method.
 
Welding method has the characteristics of uniform heating, weld seam round and smooth, good quality, the formation of small internal burr, generally only 0.1 ~ 0.2 ㎜. Micro-beam plasma method welding stainless steel 304 metal hose, the outer weld is bright and smooth, the inner weld is flat and dense, the burr height does not exceed 0.031～0.020㎜ on average, after welding stainless steel 304 metal hose outer diameter ellipticity is 0.10～0.23㎜, the wall thickness difference is 0.020～0.034㎜, after cold rolling effectively eliminates the outer diameter ellipticity over a wide range, the wall thickness difference reaches 0.002～0.007㎜, the quality completely reaches the level of stainless steel 304 metal hose.
After heat treatment, it has the same organization and performance as stainless steel 304 metal hose, and the economic superiority of producing thin tube with stainless steel 304 metal hose is greatly inferior to the thin tube processed by cold rolling after welding. Stainless steel 304 metal hose molded parts together belong to the stainless steel 304 metal hose forming device, but the adaptability of the processed products are different. For the wall thickness and outside diameter of the larger pipe, the use of more hot perforation, more difficult to form stainless steel welded tube.
 
The key point is that the later process is mainly to reduce the diameter of the process. Without a fixed diameter, the pipe size will be limited and the output will be restricted. In terms of seamlessness, the finished product can only be produced by repeated cold drawing and machining. Stainless steel welded pipe product grade improvement should start from Steelmaking steel plate.
Regardless of stainless steel 304 metal hose for cold rolled coil, with the continuous use of stainless steel 304 metal hose for continuous casting billets, steel refining improves the accuracy of steel, greatly improving the purity of steel. For stainless steel 304 metal hose subjected to fluid pressure, hydrostatic test and radiographic inspection to check the pressure resistance and quality. No leakage will occur under the specified pressure.