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1. 发明专利

JP2009068079A Steel tube with excellent steam oxidation resistance 审中-公开
标题翻译：具有优异的蒸汽氧化电阻的钢管
公开(公告)号：JP2009068079A
公开(公告)日：2009-04-02
申请号：JP2007238636
申请日：2007-09-14
申请人： Sumitomo Metal Ind Ltd , 住友金属工業株式会社
发明人： NISHIYAMA YOSHITAKA , MIYAHARA HITOSHI , KAWAKAMI TADASHI
IPC分类号： C22C38/00 , C21D7/06 , C22C38/18 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To provide a steel tube having excellent steam oxidation resistance and suitable as a material used for boilers in power generation facilities, tubing and various heat exchangers, etc.
SOLUTION: The steel tube with excellent steam oxidation resistance contains 8 to 28 mass% Cr and has a worked layer in the inner surface thereof and satisfies inequality α≥0.5 (wherein α is represented by equation α={Hv
20 -Hv
t/2 }/Hv
t/2 ). In the equation, Hv
20 and Hv
t/2 denote a Vickers hardness in a position at a depth of 20 μm from the inner surface of the steel tube and a Vickers hardness in a position at a depth of t/2 (where (t) is wall thickness of the steel tube) from the inner surface of the steel tube, respectively.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供具有优异的耐蒸汽抗氧化性的钢管，适合用作发电设备，管道和各种热交换器等中的锅炉的材料。解决方案：具有优异蒸汽的钢管抗氧化性含有8〜28质量％的Cr，并且在其内表面具有加工层，并且满足不等式α≥0.5（其中α由等式α=äHv Hv 2 / SB）/ Hv t / 2 ）。在该方程式中，Hv 20 和Hv t / 2 表示在距离钢管内表面20μm深度的位置的维氏硬度，维氏硬度在钢管的内表面分别在t / 2深度（其中（t）是钢管的壁厚）的位置。版权所有（C）2009，JPO＆INPIT

2. 发明专利

JP2010150593A Austenitic heat-resistant alloy 有权
标题翻译：奥氏体耐热合金
公开(公告)号：JP2010150593A
公开(公告)日：2010-07-08
申请号：JP2008329206
申请日：2008-12-25
申请人： Sumitomo Metal Ind Ltd , 住友金属工業株式会社
发明人： HIRATA HIROMASA , ISEDA ATSURO , OKADA KOICHI , SENBA MITSUYUKI , KONO YOSHIORI , MIYAHARA HITOSHI
IPC分类号： C22C38/00 , C22C38/58
CPC分类号： C22C38/44 , C21D6/001 , C21D6/002 , C21D6/004 , C22C38/001 , C22C38/002 , C22C38/008 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/50 , C22C38/52 , C22C38/54 , F22B37/04
摘要： PROBLEM TO BE SOLVED: To provide an austenitic heat-resistant alloy excellent in weldability and creep-strength in which when this alloy is welded or used for long time at high temperature, cracking in an HAZ (Heat-Affected Zone) can be prevented.
SOLUTION: This austenitic heat-resistant alloy comprises ≤0.15% C, ≤2% Si, ≤3% Mn, 40-80% Ni, 15-40% Cr, 1-15% of W and Mo in total, ≤3% Ti, ≤3% Al, ≤0.03% N and ≤0.03% O and the balance Fe with impurities, wherein in the impurities, the steel contains ≤0.04% P, ≤0.03% S, ≤0.1% Sn, ≤0.01% As, ≤0.01% Zn, ≤0.01% Pb, ≤0.01% Sb and satisfies inequalities P1≤0.050, 0.2≤P2≤7.5-10×P1, P2≤9.0-100×O and N≤0.002×P2+0.019, wherein P1=S+{(P+Sn)/2}+{(As+Zn+Pb+Sb)/5} and P2=Ti+2Al.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：为了提供优异的焊接性和蠕变强度的奥氏体耐热合金，其中当该合金在高温下长时间焊接或使用时，HAZ（受热影响区）的开裂可以被阻止该奥氏体耐热合金包括≤0.15％C，≤2％Si，≤3％Mn，40-80％Ni，15-40％Cr，总共W和Mo的1-15％ ≤3％Ti，≤3％Al，≤0.03％N和≤0.03％O，余量为Fe与杂质，其中杂质含钢≤0.04％P，≤0.03％S，≤0.1％Sn，≤ 0.01％As，≤0.01％Zn，≤0.01％Pb，≤0.01％Sb，满足不等式P1≤0.050,0.2≤P2≤7.5-10×P1，P2≤9.0-100×O，N≤0.002×P2 + 0.019 其中P1 = S +ä（P + Sn）/ 2} +ä（As + Zn + Pb + Sb）/ 5}和P2 = Ti + 2Al。版权所有（C）2010，JPO＆INPIT

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