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首页> 外国专利> PRODUCTION OF METASTABLE AUSTENITIC STAINLESS STEEL SHEET EXCELLENT IN SEASON CRACKING RESISTANCE AT THE TIME OF PRODUCTION

PRODUCTION OF METASTABLE AUSTENITIC STAINLESS STEEL SHEET EXCELLENT IN SEASON CRACKING RESISTANCE AT THE TIME OF PRODUCTION

机译：在生产时具有出色的抗开裂性的亚稳态奥氏体不锈钢板的生产

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PURPOSE: To improve the season cracking resistance at the time of production in low austenite stability as a steel sheet by subjecting a steel whose chemical compsn. and Ni equivalent are specified to hot rolling, thereafter holding it under heating to a specified temp. and next controlling the cooling conditions. ;CONSTITUTION: The compsn, of steel is incorporated with, by weight, 0.09 to 0.30% C, ≤2.0% Si, ≤2.0% Mn, 10.0 to 20.0% Cr, 5.0 to 10.0% Ni and ≤0.10% N and is furthermore incorporated with one or two kinds among 0.1 to 3.0% Mo, ≤1.0% Nb, ≤1.0% Ti and ≤1.0% V. Furthermore, the Ni equivalent shown by the formula is regulated to the range of 19.0 to 24.0%. This steel slab is subjected to hot rolling, is thereafter held under soaking to 1000 to 1300°C and is next subjected to controlled cooling in the temp. range of 950 to 550°C at 1 to 10°C/min cooling rate. In this way, the metastable austenitic steel excellent in the season cracking resistance can be produced by simple means.;COPYRIGHT: (C)1995,JPO
机译：目的：通过对化学成分进行处理的钢，在低奥氏体稳定性下提高生产时的抗季节开裂性。将Ni和Ni当量指定为热轧，然后将其加热至指定温度。然后控制冷却条件。组成：钢的重量百分比为0.09至0.30％C，≤2.0％Si，≤2.0％Mn，10.0至20.0％Cr，5.0至10.0％Ni和≤0.10％N含有0.1〜3.0％的Mo，≤1.0％的Nb，≤1.0％的Ti，≤1.0％的V中的1种或2种。此外，式中表示的Ni当量为19.0〜24.0％的范围。对该钢坯进行热轧，然后将其保持在1000至1300℃的均热下，然后在该温度下进行受控的冷却。在1至10°C / min的冷却速率下，温度范围为950至550°C。这样，可以通过简单的方法生产出具有优异的抗季节开裂性的亚稳奥氏体钢。版权所有：（C）1995，日本特许厅

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