| 摘要 |
A manufacturing method of high manganese stainless steel is provided to prevent the generation of spot scales when subjecting high Mn-added 200 series stainless steel to a heat treatment process at annealing states of ordinary austenitic stainless steel. A manufacturing method of high manganese stainless steel comprises the steps of: cold rolling a stainless strip(13); controlling an annealing temperature to a range of 1020 to 1100 deg.C, and annealing the cold rolled strip in the annealing temperature range; subjecting the annealed strip to salt bath treatment in a molten salt; neutralizing the salt bath treatment-completed strip with sulfuric acid; and pickling the neutralized strip in a mixed acid containing nitric acid with a concentration of 6 to 10 g/L and hydrofluoric acid with a concentration of 1.5 to 2 g/L, wherein the high manganese stainless steel comprises 8 to 11% by weight of manganese. The stainless steel is a 200 series stainless steel. |
