Process method for controlling ferrite content of surfacing layer of austenitic stainless steel

• Main Author: ZHOU ZHAOJUN
• Format: Patent
• Language: Chinese; English
• Published: 23.09.2022
• Subjects: COMBINED OPERATIONS; MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR; OTHER WORKING OF METAL; PERFORMING OPERATIONS; TRANSPORTING; UNIVERSAL MACHINE TOOLS

The process method for controlling the ferrite content of the surfacing layer of the austenitic stainless steel comprises the following steps that S1, backing welding of a plate structure, a pipe and a thick piece is prepared before welding, S2, the two sides of a groove are wiped and cleaned with acetone, lime powder is coated, and the metal surface is prevented from being splashed and damaged, S3, small-specification welding is adopted, pulse current is externally applied, and welding is conducted. S4, the welded part obtained after welding in the S3 is cooled, S5, the surface of the welded part obtained after cooling in the S4 is subjected to surface polishing treatment, S6, the welded part obtained after polishing in the S5 is subjected to passivating treatment, the thickness of the plate structure in the S1 ranges from 0.5 mm to 3 mm, the thickness of the plate structure in the S2 ranges from 0.5 mm to 3 mm, the thickness of the plate structure in the S3 ranges from 0.5 mm to 3 mm, and the thickness of t