| 摘要 |
PURPOSE:To improve the formability, oxidation and ridging resistances of a martensitic stainless steel sheet by annealing a hot rolled sheet of a steel obtd. by adding proper amounts of Al and N to a martensitic stainless steel under prescribed conditions satisfactory for recrystallization and softening. CONSTITUTION:A steel contg., by weight, <=0.4% C, <=1% Si, <=1% Mn, <=0.6% Ni, 10-15% Cr, 0.025-0.3% Al and 0.025-0.06% N is refined. This martensitic stainless steel stock is hot rolled and the resulting hot rolled sheet is annealed at 650-800 deg.C for <=300sec. It is then descaled, cold rolled and finish-annealed. |
