| 摘要 |
PROBLEM TO BE SOLVED: To execute pickling to a hot rolled steel strip using inexpensive sulfuric acid and furthermore to obtain a mirror finished face good in glass in the production of an austenitic stainless steel thin sheet. SOLUTION: This smooth pickling method is the one in which, at the time of pickling an austenitic stainless steel hot rolled strip, mechanical descaling is executed to regulate the cover ratio of scales remaining on the surface to <=50%, furthermore, hardening is executed so as to regulate the hardness at a position of 30μm depth on the scale metal side from the scale metal boundary on the surface of the steel strip to >=350Hv, and after that, it is pickled in a soln. of sulfuric acid of 50 to 600g/l sulfuric acid concn. heated at 50 to 120 deg.C.
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