Precautions when welding stainless steel 304 pipes
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Precautions and operating points when welding stainless steel (304) pipes.
1. Welder qualifications 2. Selection of welding materials 3. Interpass temperature 4. Bottom layer argon protection
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There are many ways to weld 304 pipes, such as gas shielded welding, argon arc welding, etc. First, we need to find a reasonable welding method, and then choose welding materials according to the usage requirements.
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304 stainless steel has better weldability, and plasma single-sided welding and double-sided forming can be used for thicknesses not exceeding 6mm. During the welding process, pay attention to controlling the line energy and inter-layer temperature. The welding line energy is controlled at 0.7~1.3KJ/mm, and the inter-layer temperature is within 150°C. The ion gas uses an argon-nitrogen mixture, and the back protection gas uses pure argon! !