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One of the methods for reducing the production costs to increase competitiveness is to minimize waste products as well as the cost of testing products, and numerical simulation is a useful tool to solve this task. In this study, the authors use SYSWELD software to compute in advance the suitable heat input range to weld specific layers in heat-resistant stainless steel butt welded joints in chemical plants, oil and gas, and energy. The simulation results show that with the butt-welded joint made by SUS316L steel in 8 mm thick and welded by the MIG welding process, the appropriate heat input of the root pass is 506 J/mm ≤ qđl ≤ 650 J/mm and the heat input suitable for cap pass is 754 J/mm ≤ qđl ≤ 1066 J/mm.

Determine The Suitable Heat Input Range for Butt Joint Made by Heat Resistance Stainless Steel SUS316L by Using the Numerical Simulation