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1. 发明授权

US09243314B2 Method for manufacturing high-Si austenitic stainless steel 有权
标题翻译：高Si奥氏体不锈钢的制造方法
公开(公告)号：US09243314B2
公开(公告)日：2016-01-26
申请号：US14235873
申请日：2012-07-26
申请人： Tomoyuki Sukawa , Shinnya Yamamoto , Kouichi Takeuchi , Hayato Kita , Shuuji Yoshida , Katsuhiko Taketsu , Masayuki Shibuya
发明人： Tomoyuki Sukawa , Shinnya Yamamoto , Kouichi Takeuchi , Hayato Kita , Shuuji Yoshida , Katsuhiko Taketsu , Masayuki Shibuya
IPC分类号： C22C38/48 , C22C38/04 , C22C38/00 , C22C38/06 , C22C38/34 , C22C38/58
CPC分类号： C22C38/48 , C22C38/001 , C22C38/04 , C22C38/06 , C22C38/34 , C22C38/58
摘要： A high-Si content austenitic stainless steel, which exhibits stable acid resistance and excellent corrosion resistance in high-temperature and concentrated nitric acid, has a chemical composition comprising: C: at most 0.04%; Si: 2.5-7.0%; Mn: at most 10%; P at most 0.03%; S: at most 0.03%; N: at most 0.035%; sol. Al: at most 0.03%; Cr: 7-20%; Ni: 10-22%; optionally, one or more types selected from Nb, Ti, Ta and Zr: 0.05-0.7% in total; and the remainder being Fe and impurities, wherein a total amount of B1 type inclusions measured by a method according to JIS G0555 (2003) Annex 1 “Microscopic Testing for the Non-Metallic Inclusions on the Point Counting Principle” is not more than 0.03% by area %.
摘要翻译：在高温和浓硝酸中具有耐酸性和耐腐蚀性优异的高Si含量的奥氏体不锈钢具有以下化学成分：C：0.04％以下， Si：2.5〜7.0％ Mn：最多10％ P至多0.03％; S：0.03％以下; N：0.035％以下; 溶胶 Al：0.03％以下; Cr：7-20％; Ni：10-22％; 任选地，选自Nb，Ti，Ta和Zr中的一种或多种：总共为0.05-0.7％剩余部分为Fe和杂质，其中通过根据JIS G0555（2003）附件1“非计数原理的非金属夹杂物的微观测试”的方法测量的B1型夹杂物的总量不大于0.03％按面积％。

2. 发明申请

US20140294659A1 METHOD FOR MANUFACTURING HIGH-SI AUSTENITIC STAINLESS STEEL 有权
标题翻译：制造高强度奥氏体不锈钢的方法
公开(公告)号：US20140294659A1
公开(公告)日：2014-10-02
申请号：US14235873
申请日：2012-07-26
申请人： Tomoyuki Sukawa , Shinnya Yamamoto , Kouichi Takeuchi , Hayato Kita , Shuuji Yoshida , Katsuhiko Taketsu , Masayuki Shibuya
发明人： Tomoyuki Sukawa , Shinnya Yamamoto , Kouichi Takeuchi , Hayato Kita , Shuuji Yoshida , Katsuhiko Taketsu , Masayuki Shibuya
IPC分类号： C22C38/48 , C22C38/00 , C22C38/04 , C22C38/34 , C22C38/06
CPC分类号： C22C38/48 , C22C38/001 , C22C38/04 , C22C38/06 , C22C38/34 , C22C38/58
摘要： A high-Si content austenitic stainless steel, which exhibits stable acid resistance and excellent corrosion resistance in high-temperature and concentrated nitric acid, has a chemical composition comprising: C: at most 0.04%; Si: 2.5-7.0%; Mn: at most 10%; P at most 0.03%; S: at most 0.03%; N: at most 0.035%; sol. Al: at most 0.03%; Cr: 7-20%; Ni: 10-22%; optionally, one or more types selected from Nb, Ti, Ta and Zr: 0.05-0.7% in total; and the remainder being Fe and impurities, wherein a total amount of B1 type inclusions measured by a method according to JIS G0555 (2003) Annex 1 “Microscopic Testing for the Non-Metallic Inclusions on the Point Counting Principle” is not more than 0.03% by area %.
摘要翻译：在高温和浓硝酸中具有耐酸性和耐腐蚀性优异的高Si含量的奥氏体不锈钢具有以下化学成分：C：0.04％以下， Si：2.5〜7.0％ Mn：最多10％; P最多0.03％; S：0.03％以下; N：0.035％以下; 溶胶 Al：0.03％以下; Cr：7-20％; Ni：10-22％; 任选地，选自Nb，Ti，Ta和Zr中的一种或多种：总共为0.05-0.7％剩余部分为Fe和杂质，其中通过根据JIS G0555（2003）附件1“非计数原理的非金属夹杂物的微观测试”的方法测量的B1型夹杂物的总量不大于0.03％按面积％。

3. 发明申请

US20140261917A1 METHOD FOR MANUFACTURING AUSTENITIC STAINLESS STEEL 审中-公开
标题翻译：制造奥氏体不锈钢的方法
公开(公告)号：US20140261917A1
公开(公告)日：2014-09-18
申请号：US14235849
申请日：2012-07-26
申请人： Hayato Kita , Masayuki Shibuya , Shuuji Yoshida , Tomoyuki Sukawa
发明人： Hayato Kita , Masayuki Shibuya , Shuuji Yoshida , Tomoyuki Sukawa
IPC分类号： C21D8/00 , B21B1/02
摘要： A high Si-containing austenitic stainless steel having corrosion resistance in a nitric acid environment at a high temperature is made by hot-rolling a slab of stainless steel and heat treating the hot-rolled stainless steel at a temperature of 1100 to 1160° C. The steel is cooled at cooling rate of at least 100° C./min. The stainless steel has a chemical composition containing: C: at most 0.04%; Cr: 7 to 20%, Ni: 10 to 22%, Si: 2.5 to 7%, Mn: at most 10%, sol. Al: at most 0.03%, P: at most 0.03%, S: at most 0.03%; N: at most 0.035%, a total of one or more of Nb, Ti, Ta, and Zr being 0.05 to 0.7%; and the remainder Fe and impurities. The heating temperature during the hot rolling is Th in which ΔT of Formula (1): Th=1135−90Si−2.9Cr+40 Ni−ΔT is at least 30□C.
摘要翻译：在高温硝酸环境中具有耐腐蚀性的高含Si奥氏体不锈钢是通过热轧不锈钢板并在1100〜1160℃的温度下对热轧不锈钢进行热处理而制成的。钢的冷却速度至少为100℃/分。不锈钢的化学成分含有：C：0.04％以下; Cr：7〜20％，Ni：10〜22％，Si：2.5〜7％，Mn：10％以下。 Al：0.03％以下，P：0.03％以下，S：0.03％以下。 N：0.035％以下，Nb，Ti，Ta，Zr中的1种以上为0.05〜0.7％。余量为Fe和杂质。热轧期间的加热温度为Th，其中式（1）：Th = 1135-90Si-2.9Cr + 40Ni-和Dgr; T的＆Dgr; T为至少30℃。

4. 发明授权

US08603263B2 Duplex stainless steel having excellent alkali resistance 有权
标题翻译：具有优异耐碱性的双相不锈钢
公开(公告)号：US08603263B2
公开(公告)日：2013-12-10
申请号：US13461379
申请日：2012-05-01
申请人： Hideya Kaminaka , Junichi Higuchi , Yoshiaki Yamade , Shuuji Yoshida , Junko Imamura
发明人： Hideya Kaminaka , Junichi Higuchi , Yoshiaki Yamade , Shuuji Yoshida , Junko Imamura
IPC分类号： C22C38/44
CPC分类号： C22C38/44 , C22C38/001 , C22C38/02 , C22C38/04 , C22C38/06
摘要： The present invention provides a duplex stainless steel having excellent resistance to alkalis and particularly corrosion resistance against high-temperature concentrated alkali solutions and excellent weldability. The duplex stainless steel has a chemical composition comprising, in mass %, C: at most 0.03%, Si: at most 0.5%, Mn: at most 2.0%, P: at most 0.04%, S: at most 0.003%, Cr: at least 25.0% to less than 28.0%, Ni: at least 6.0% to at most 10.0%, Mo: at least 0.2% to at most 3.5%, N: less than 0.5%, W: at most 3.0%, and a remainder of Fe and impurities.
摘要翻译：本发明提供具有优异的耐碱性和对高温浓碱溶液的特别耐腐蚀性和优异的可焊性的双相不锈钢。双相不锈钢具有以质量％计含有C：0.03％以下，Si：0.5％以下，Mn：2.0％以下，P：0.04％以下，S：0.003％以下，Cr：：至少25.0％至小于28.0％，Ni：至少6.0％至至多10.0％，Mo：至少0.2％至至多3.5％，N：小于0.5％，W：至多3.0％，以及剩余的铁和杂质。

5. 发明申请

US20120244031A1 DUPLEX STAINLESS STEEL HAVING EXCELLENT ALKALI RESISTANCE 有权
标题翻译：具有优异耐碱性的双相不锈钢
公开(公告)号：US20120244031A1
公开(公告)日：2012-09-27
申请号：US13461379
申请日：2012-05-01
申请人： Hideya KAMINAKA , Junichi Higuchi , Yoshiaki Yamade , Shuuji Yoshida , Junko Imamura
发明人： Hideya KAMINAKA , Junichi Higuchi , Yoshiaki Yamade , Shuuji Yoshida , Junko Imamura
IPC分类号： C22C38/44 , C22C38/04 , C22C38/12 , C22C38/02
CPC分类号： C22C38/44 , C22C38/001 , C22C38/02 , C22C38/04 , C22C38/06
摘要： The present invention provides a duplex stainless steel having excellent resistance to alkalis and particularly corrosion resistance against high-temperature concentrated alkali solutions and excellent weldability. The duplex stainless steel has a chemical composition comprising, in mass %, C: at most 0.03%, Si: at most 0.5%, Mn: at most 2.0%, P: at most 0.04%, S: at most 0.003%, Cr: at least 25.0% to less than 28.0%, Ni: at least 6.0% to at most 10.0%, Mo: at least 0.2% to at most 3.5%, N: less than 0.5%, W: at most 3.0%, and a remainder of Fe and impurities.
摘要翻译：本发明提供具有优异的耐碱性和对高温浓碱溶液的特别耐腐蚀性和优异的可焊性的双相不锈钢。双相不锈钢具有以质量％计含有C：0.03％以下，Si：0.5％以下，Mn：2.0％以下，P：0.04％以下，S：0.003％以下，Cr：：至少25.0％至小于28.0％，Ni：至少6.0％至至多10.0％，Mo：至少0.2％至至多3.5％，N：小于0.5％，W：至多3.0％，以及剩余的铁和杂质。

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