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1. 发明公开

EP0732418A4 HIGHLY CORROSION-RESISTANT MARTENSITIC STAINLESS STEEL WITH EXCELLENT WELDABILITY AND PROCESS FOR PRODUCING THE SAME 失效
标题翻译：马氏体钢高耐腐蚀性和杰出的焊接性能和同样的方法
公开(公告)号：EP0732418A4
公开(公告)日：1998-04-01
申请号：EP95932907
申请日：1995-09-27
申请人： NIPPON STEEL CORP
发明人： HARA TAKUYA , ASAHI HITOSHI , TAMEHIRO HIROSHI , MURAKI TARO , KAWAKAMI AKIRA
IPC分类号： C21D1/18 , C21D8/02 , C22C38/42 , C22C38/50
CPC分类号： C22C38/42 , C21D1/18 , C21D8/0205 , C21D2211/008
摘要： Martensitic stainless steel excellent in weldability and SSC resistance and having a tempered martensitic structure which contains on the weight basis 0.005 - 0.035 % of C, at most 0.50 % of Si, 0.1 - 1.0 % of Mn, at most 0.03 % of P, at most 0.005 % of S, 1.0 - 3.0 % of Mo, 1.0 - 4.0 % of Cu, 1.5 - 5.0 % of Ni, at most 0.06 % of Al, at most 0.01 % of N and such an amount of Cr as to satisfy the relationship that 13 > Cr + 1.6 Mo >/= 8, satisfies the relationship that C + N /= -10, optionally contains further at least one element selected from among 0.05 - 0.1 % of Ti, 0.01 - 0.2 % of Zr, 0.001 - 0.02 % of Ca and 0.003 - 0.4 % of REM, the balance substantially comprising Fe. The process for producing the steel comprises hot rolling the billet of the same into a steel plate, austenizing the plate at a temperature in the range of the Ac3 point to 1,000 DEG C, followed by hardening, and subjecting to final tempering at a temperature in the range of 550 DEG C to the Ac1 point, followed by cold forming.

2. 发明专利

RU2759814C1 ПРОВОЛОКА ИЗ ТИТАНОВОГО СПЛАВА α+β-ТИПА И СПОСОБ ИЗГОТОВЛЕНИЯ ПРОВОЛОКИ ИЗ ТИТАНОВОГО СПЛАВА α+β-ТИПА 未知
公开(公告)号：RU2759814C1
公开(公告)日：2021-11-18
申请号：RU2021109000
申请日：2019-10-07
申请人： NIPPON STEEL CORP
发明人： MIYOSHI RYOTARO , KUNIEDA TOMONORI , TAKAHASHI KAZUHIRO , YAMAZAKI TATSUO , KAWAKAMI AKIRA
IPC分类号： C22C14/00 , C22F1/18
摘要： Изобретениеотноситсяк металлургии, аименнок изготовлениюпроволокиизтитановогосплаваα+β-типа, иможетбытьиспользованоприизготовленииэлементов, обладающихвысокойусталостнойпрочностью. Проволокаизтитановогосплаваα+β-типасодержит, мас.%: Al от 4,50 до 6,75, Si от 0 до 0,50, C 0,080 илименее, N 0,050 илименее, H 0,016 илименее, O 0,25 илименее, поменьшеймереодинэлемент, выбранныйиз: Mo от 0 до 5,5, V от 0 до 4,50, Nb от 0 до 3,0, Fe от 0 до 2,10, Cr от 0 доменее 0,25, Ni от 0 доменее 0,15, Mn от 0 доменее 0,25, иостальноесоставляют Ti ипримеси. Среднееотношениеразмеровкристаллическогозернаα-фазыподлиннойосии покороткойоси, расположеннойортогональнок длиннойоси, составляетот 1,0 до 3,0, максимальныйдиаметркристаллическогозернаα-фазысоставляет 30,0 мкмилименее, среднийдиаметркристаллическогозернаα-фазысоставляетот 1,0 до 15,0 мкми всечении, ортогональномнаправлениюпродольнойосипроволоки, доляплощадикристаллическогозернаα-фазысредикристаллическихзеренα-фазы, укоторогоуголмеждунаправлениемс-осикристаллическогозернаα-фазыс гексагональнойплотнойупаковкойрешеткии направлениемпродольнойосипроволокиравенот 15 до 40°, составляет 5,0% илименее. Способизготовленияпроволокивключаетпервуюстадию, накоторойпрутокпрокатываютиливолочатв проволокуоднократно, двукратноилимногократнопритемпературеот 0 до 500°Сс обеспечениемотносительногосужениязаодинраз 10-50% исуммарногоотносительногосужения 50% илиболее, ивторуюстадию, накоторойполученнуюнапервойстадиипроволокуподвергаюттермическойобработке. Обеспечиваетсяполучениевысокихусталостныхсвойств. 2 н. и 4 з.п. ф-лы, 5 ил., 8 табл., 2 пр.

3. 发明专利

DE69520488D1 未知
公开(公告)号：DE69520488D1
公开(公告)日：2001-05-03
申请号：DE69520488
申请日：1995-09-27
申请人： NIPPON STEEL CORP
发明人： HARA TAKUYA , ASAHI HITOSHI , TAMEHIRO HIROSHI , MURAKI TARO , KAWAKAMI AKIRA
IPC分类号： C21D1/18 , C21D8/02 , C22C38/42 , C22C38/50
摘要： Martensitic stainless steel excellent in weldability and SSC resistance and having a tempered martensitic structure which contains on the weight basis 0.005 - 0.035 % of C, at most 0.50 % of Si, 0.1 - 1.0 % of Mn, at most 0.03 % of P, at most 0.005 % of S, 1.0 - 3.0 % of Mo, 1.0 - 4.0 % of Cu, 1.5 - 5.0 % of Ni, at most 0.06 % of Al, at most 0.01 % of N and such an amount of Cr as to satisfy the relationship that 13 > Cr + 1.6 Mo >/= 8, satisfies the relationship that C + N /= -10, optionally contains further at least one element selected from among 0.05 - 0.1 % of Ti, 0.01 - 0.2% of Zr, 0.001 - 0.02 % of Ca and 0.003 - 0.4 % of REM, the balance substantially comprising Fe. The process for producing the steel comprises hot rolling the billet of the same into a steel plate, austenizing the plate at a temperature in the range of the Ac3 point to 1,000 DEG C, followed by hardening, and subjecting to final tempering at a temperature in the range of 550 DEG C to the Ac1 point, followed by cold forming.

4. 发明专利

DE69520488T2 未知
公开(公告)号：DE69520488T2
公开(公告)日：2001-09-27
申请号：DE69520488
申请日：1995-09-27
申请人： NIPPON STEEL CORP
发明人： HARA TAKUYA , ASAHI HITOSHI , TAMEHIRO HIROSHI , MURAKI TARO , KAWAKAMI AKIRA
IPC分类号： C21D1/18 , C21D8/02 , C22C38/42 , C22C38/50
摘要： Martensitic stainless steel excellent in weldability and SSC resistance and having a tempered martensitic structure which contains on the weight basis 0.005 - 0.035 % of C, at most 0.50 % of Si, 0.1 - 1.0 % of Mn, at most 0.03 % of P, at most 0.005 % of S, 1.0 - 3.0 % of Mo, 1.0 - 4.0 % of Cu, 1.5 - 5.0 % of Ni, at most 0.06 % of Al, at most 0.01 % of N and such an amount of Cr as to satisfy the relationship that 13 > Cr + 1.6 Mo >/= 8, satisfies the relationship that C + N /= -10, optionally contains further at least one element selected from among 0.05 - 0.1 % of Ti, 0.01 - 0.2% of Zr, 0.001 - 0.02 % of Ca and 0.003 - 0.4 % of REM, the balance substantially comprising Fe. The process for producing the steel comprises hot rolling the billet of the same into a steel plate, austenizing the plate at a temperature in the range of the Ac3 point to 1,000 DEG C, followed by hardening, and subjecting to final tempering at a temperature in the range of 550 DEG C to the Ac1 point, followed by cold forming.

5. 发明专利

JPS5930776B2 JPS5930776B2 - 失效
公开(公告)号：JPS5930776B2
公开(公告)日：1984-07-28
申请号：JP4967081
申请日：1981-04-02
申请人： Nippon Steel Corp
发明人： KAWAKAMI AKIRA , FUJITA WATARU , MAESHIBU EIICHI
IPC分类号： C22B1/20 , F27B21/06 , F27B21/10

6. 发明专利

JPS57164940A METHOD AND APPARATUS FOR CHARGING STARTING MATERIAL INTO SINTERING MACHINE 失效
公开(公告)号：JPS57164940A
公开(公告)日：1982-10-09
申请号：JP4967081
申请日：1981-04-02
申请人： NIPPON STEEL CORP
发明人： KAWAKAMI AKIRA , FUJITA WATARU , MAESHIBU EIICHI
IPC分类号： C22B1/20 , F27B21/06 , F27B21/10
摘要： PURPOSE:To rationalize the degree of segregation of starting materials for sintering on the pallet of a DL type sintering machine for fine iron ore with simple equipment and to enhance the productivity of the machine by forming a shoot for dropping starting materials onto the pallet with a plurality of shoots having specified openings. CONSTITUTION:When sintered ore is manufactured from fine iron ore with a DL type sintering machine, starting materials 8 are fed onto the grate bar 5 of the pallet 4 of the sintering machine 17 in layers. At this time, in order to enhance the strength, product yield, productivity, etc. of the manufactured sintered ore, the starting material layers on the pallet 4 are segregated so that the upper layer is made rich in coke as fuel and the starting material of the lower layer have a larger grain size than those of the upper layer. To attain the segregation a shoot 18 having slitlike openings 19 and a shoot 20 are set below a drum feeder 2 at fixed intervals, and the starting materials 8 are sieved with the shoots to form starting materials layers with the desired grain size distribution. A plurality of shoots are set according to the kind and grain size of starting materials, and the charged starting materials are regulated to the desired degree of segregation.

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