Flared S-type stainless steel metal hose welding (GB/T3642-1983)
Welding of flared S-type stainless steel metal hose (GB/T3642-1983) is a kind of welding process that is widely used in the production of stainless steel pipes in many industries. In this paper, the welding process, welding materials and techniques of S-type stainless steel metal hoses are described in detail.
1、Welding process of S-type stainless steel metal pipe
The welding process of S-type stainless steel metal hose includes flame welding, tungsten inert gas welding, metal arc welding, submerged arc welding and resistance welding. Flame welding is usually used in metal pipe welding, mainly used in stainless steel pipe welding. Tungsten inert gas welding is mainly used for the welding of stainless steel with wall thickness greater than 0.5mm. Metal arc welding and submerged arc welding are generally suitable for welding of stainless steel pipes with thicker wall thickness or inclined pipe surface structure. Resistance welding is mainly used for welding of stainless steel pipe fittings.
2、Welding materials of S-type stainless steel metal hose
The welding materials of S-type stainless steel metal pipe include stainless steel electrodes, stainless steel rods, stainless steel powders and weldable fluxes. The welding materials should be selected according to the welding process, welding position and welding joint of stainless steel metal hose. For example, when carrying out flame welding, you can use E310 stainless steel electrodes or DH stainless steel rods, and for tungsten inert gas welding, you can use E316L stainless steel powder and corresponding flux for welding.
3、Welding techniques of S-type stainless steel metal hose
The specific welding techniques of S-type stainless steel metal hose include preheating pre-processing technique, protective gas welding technique and energy welding technique. For example, when carrying out flame welding, it is necessary to preheat the connecting parts properly to reduce the cooling rate after welding and reduce the thermal stress, and at the same time, adopt the technique of edge folding and U-shaped consistent welding to improve the welding strength. Tungsten inert gas welding should be used to use the protective gas welding technique to protect the molten pool area from oxidation and combustion reaction. When performing energy welding, the welding speed should be selected reasonably according to the welding position and welding joint structure.
In conclusion, S-type stainless steel metal hose welding (GB/T3642-1983) is an important welding process for the production of stainless steel pipes in many industries. In the welding process of S-type stainless steel metal hose, there are many welding materials and welding techniques, which need to be selected according to the welding process, welding position and welding joint of stainless steel metal hose.
