Study on Arc Welding Technologies of 304 Stainless Steel Plate

selects Abstract：this the factors affecting article studies the welding the process technologies of DC TIG by means welding of of the 304 Minitab, stainless and steel optimizes with thickness welding of 1.5 process mm, parameters through uniform design and the golden section test, then analyzes the mechanical properties and metallurgical microstructure of weld joint, and makes the numerical simulation of temperature field of the stainless steel plate by the ANSYS software. Results indicate that the optimal welding process parameters obtained by 2 experimental optimization methods are like this: welding current is 84 A, argon flow is 7 L/min, welding velocity is 2.9～3.1 mm/s, and the simulated temperature field by ANSYS proves that the welding parameters are the best of all. Key words: 304 Stainless steel, TIG welding, Uniform design, Mechanical property, Microstructure