Electric arc welding process suitable for welding Ni series steel and 316L dissimilar steel

The invention discloses an electric arc welding process suitable for welding Ni-series steel and 316L dissimilar steel, and relates to the technical field of steel production, and the electric arc welding process comprises the following steps: connecting the Ni-series steel and the 316L dissimilar steel with a welding rod according to an electric arc welding form; a symmetrical X-shaped groove is adopted as an electric arc welding groove, the angle of the groove is 55-65 degrees, the length of a truncated edge is 1-3 mm, and the assembling gap of the groove is 1-3 mm; preheating is not conducted before welding, the interlayer temperature is smaller than or equal to 120 DEG C, and back gouging treatment is conducted before back face welding; electric arc welding is adopted, the welding current ranges from 80 A to 110 A, the arc voltage ranges from 20 V to 24 V, the welding speed ranges from 11 cm/min to 17 cm/min, and the welding heat input ranges from 6 kJ/cm to 15 kJ/cm until welding is completed. A welding