Thin belt continuous casting austenitic stainless steel belt and manufacturing method thereof

Abstract

The present invention discloses one kind of continuously cast austenite stainless steel sheet band and its production process. The austenite stainless steel sheet band has the components including C 0.04-0.12 wt%, Si0.2-1 wt%, Mn 0.8-2 wt%, P not more than 0.04 wt%, S not more than 0.03 wt%, Cr 0.017-0.019 wt%, Ni 0.08-0.011 wt%, Sn 0.005-0.04 wt%, and Fe and inevitable impurity for the rest. Its production process includes the following steps: smelting, continuously casting to form 1-5 mm thick band and winding; solid solution treatment at 1050-1150 deg.c for 5-8 min; pickling, cold rolling, annealing at 1050-1100 deg.c for 3-8 min, re-pickling and cold rolling for the second time to reach required thickness. The present invention has utilization of Sn in waste steel, reduced residual ferrite, reduced nickel consumption, lowered production cost and raised comprehensive performance.

Description

technical field

[0001] The invention relates to a method for manufacturing stainless steel, in particular to a thin-strip continuous casting austenitic stainless steel strip and its manufacturing method. Background technique

[0002] Stainless steel is widely used in food machinery, sanitation facilities, kitchens, architectural decoration, automobiles, chemicals and electrical products due to its good corrosion resistance, high temperature resistance, high strength and toughness, exquisite appearance and excellent processability. In the stainless steel market, the demand for stainless steel sheets accounts for more than 80%, and the main product is stainless steel cold-rolled sheets.

[0003] The traditional production process of stainless steel strip is completed by continuous casting, hot rolling and cold rolling. Generally, the thickness of the slab in the traditional continuous casting process is 200mm. There are two types of hot rolling production processes for stain...

Images