Casting process for improving corrosion resistance of stainless steel 304 casting

• Main Authors: YANG SHUGANG, MENG LINGHUAN, WANG WENXIAN, DU BAOGUO, XING SHUYING, DENG LINGJUN, SUN ZHANXIU, ZHANG BAOYING, DU JUN, HWANG SE-MI
• Format: Patent
• Language: Chinese; English
• Published: 25.07.2023
• Subjects: ALLOYS; APPARATUS THEREFOR; CASTING; CHEMISTRY; ELECTROFORMING; ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; FERROUS OR NON-FERROUS ALLOYS; FOUNDRY MOULDING; METALLURGY; METALLURGY OF IRON; PERFORMING OPERATIONS; POWDER METALLURGY; PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTIONOF COATINGS; PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OFWROUGHT-IRON OR STEEL; TRANSPORTING; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS

The invention provides a casting process for improving corrosion resistance of a stainless steel 304 casting, and relates to the field of stainless steel casting. The casting process for improving the corrosion resistance of the stainless steel 304 casting comprises the following steps: step 1, sand preparation and molding: mixing and heating sand in a container and molding by using a sand box, step 2, smelting: taking a stainless steel material and putting the stainless steel material into an intermediate frequency furnace for smelting and melting, adding a proportioning solution and an ammonium chloride solution, adding 0.8 Kg of quick lime and 0.2 Kg of rare earth magnesium after slag removal, carrying out sensitization treatment, and carrying out casting by using a casting mold after the sensitization treatment. 3, pouring and demolding are conducted, a solid stainless steel product is obtained, namely a needed blank piece, and the blank piece is inspected and cleaned; and 4, dip dyeing and cleaning are c