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1. 发明专利

JPS60155652A HEAT RESISTANT STEEL 失效
公开(公告)号：JPS60155652A
公开(公告)日：1985-08-15
申请号：JP1017084
申请日：1984-01-25
申请人： HITACHI LTD
发明人： SUKEGAWA MASAYUKI , KIRIHARA SEISHIN , HIDA YOSHIMITSU , HANAI TERUAKI , HIYAMA KIYOSHI , IIJIMA KATSUMI
IPC分类号： C22C38/00 , C07C1/00 , C07C15/46 , C07C67/00 , C22C38/48 , C22C38/54 , C22C38/58 , G21C3/06 , G21C3/07
摘要： PURPOSE:To obtain a heat resistant steel having high strength, maintaining its ductility in a state with a strain applied by cold working, and usable at high temp. by adding V, Nb and other element to a heat resistant Cr-Ni steel. CONSTITUTION:An alloy steel consisting of 0.02-0.2% C, =50% Fe is used as a heat resistant steel having a plastically cold worked state and suitable for use as the material of a fuel cladding pipe for a fast breeder or as a material for a tower for synthesizing a styrene monomer. The heat resistant steel may further contain at least one among 0.5-5% Cu, 0.005-0.02% B, 0.01-0.2% Ti, 0.005-0.2% Al and 0.005- 0.2% Zr.

2. 发明专利

JPH0218377B2 失效
公开(公告)号：JPH0218377B2
公开(公告)日：1990-04-25
申请号：JP8805384
申请日：1984-05-01
申请人： HITACHI LTD
发明人： HIDA YOSHIMITSU , KIRIHARA SEISHIN , SUKEGAWA MASAYUKI , HANAI TERUAKI , DOI HIROYUKI
IPC分类号： C22C38/00 , C22C38/44 , C22C38/48

3. 发明专利

JPS5989752A WELDED STRUCTURE OF 12CR STEEL 失效
公开(公告)号：JPS5989752A
公开(公告)日：1984-05-24
申请号：JP19892282
申请日：1982-11-15
申请人： HITACHI LTD
发明人： YOSHIOKA TAKATOSHI , KIRIHARA SEISHIN , SHIGA MASAO , HANAI TERUAKI , YOSHIDA TAKEHIKO
IPC分类号： C22C38/00 , B23K35/22 , C22C38/48
摘要： PURPOSE:To obtain a welded structure having high creep rupture strength at about 550-600 deg.C, low weld crack sensitivity and superior welding work efficiency by specifying the composition of 12Cr steel as the base metal of a welded structure. CONSTITUTION:The composition of heat resistant 12Cr cast steel or forged steel as the base metal of a welded structure is composed of, by weight, 0.05-0.2% C, 0.05-1% Si, 0.1-1% Mn,

4. 发明专利

JPS61250147A HEAT RESISTANT STEEL 失效
公开(公告)号：JPS61250147A
公开(公告)日：1986-11-07
申请号：JP9087185
申请日：1985-04-30
申请人： HITACHI LTD
发明人： SUKEGAWA MASAYUKI , KIRIHARA SEISHIN , HIDA YOSHIMITSU , HANAI TERUAKI , YAMADA NORIO
IPC分类号： C22C38/00 , C21D9/50 , C22C38/18
摘要： PURPOSE:To obtain a heat resistant steel having a weld heat-affected zone with superior decarburization resistance and superior strength at high temp. and used in liq. metallic sodium at high temp. by providing a specified composition consisting of C, Cr, Mo and Fe and a tempered bainite-tempered martensite structure. CONSTITUTION:This heat resistant steel consists of, by weight, 0.03-0.20% C, 1-5% Cr, 0.3-2.0% Mo and the balance Fe and has a tempered bainite- tempered martensite structure. The steel has a weld heat-affected zone and is used in liq. metallic sodium at >=350 deg.C. It is preferable that the amount of the tempered bainite is larger than the amount of the tempered martensite. The weld heat-affected zone is obtd. by carrying out welding with 8-20kJ/cm welding heat input, cooling at 200-3,200 deg.C/min cooling rate from 1,000 deg.C to 600 deg.C and stress relief annealing at 680-750 deg.C. The relation P [P=T(log t+20)X10 ] between the annealing temp. T( deg.K) and the annealing time (t) (hr) satisfies 19.0

5. 发明专利

JPS60230964A HIGH TOUGHNESS MARTENSITIC STEEL 失效
公开(公告)号：JPS60230964A
公开(公告)日：1985-11-16
申请号：JP8805384
申请日：1984-05-01
申请人： HITACHI LTD
发明人： HIDA YOSHIMITSU , KIRIHARA SEISHIN , SUKEGAWA MASAYUKI , HANAI TERUAKI , DOI HIROYUKI
IPC分类号： C22C38/00 , C22C38/44 , C22C38/48
摘要： PURPOSE:To obtain a martensitic steel having high toughness even after long- time use at a high temp. by adding a prescribed amount of Mg to the 5-9% Cr- Mo steel having a specified composition and by regulating the Cr equiv. defined by a specified equation. CONSTITUTION:This martensitic steel consists of, by weight 0.04-0.15% C, 0.2- 1.0% Si, 0.3-1.5% Mn, 0.04-1.0% Ni, 4.0-10.0% Cr, 0.2-3.0% Mo, 0.01-0.3% Mg and the balance Fe or further contains 0.05-0.3% V and/or

6. 发明专利

JPS59107788A Welded structure 失效
标题翻译：焊接结构
公开(公告)号：JPS59107788A
公开(公告)日：1984-06-22
申请号：JP21557382
申请日：1982-12-10
申请人： Hitachi Ltd
发明人： SUKEGAWA MASAYUKI , KIRIHARA SEISHIN , HIDA YOSHIMITSU , HANAI TERUAKI
IPC分类号： B23K35/30
CPC分类号： B23K35/308
摘要： PURPOSE:To provide a welded structure having improved high temp. strength and toughness without spoiling weldability by using a Cr base material as an object to be welded, and specifying the component ratios of C, Si, Mn, Cr, Mo, Ni, Mg and Fe, etc. and the Cr equiv. in the weld metal. CONSTITUTION:A welded structure is formed of a 8% Cr steel as a base material and has the weld metal consisting of 0.05-0.2wt% C, 0.05-1% Si, 0.5-2% Mn, 8-10.5% Cr, 0.5-2.5% Mo, 0.1-1% Ni, 0.05-0.6% Mg, and the balance Fe and contg.
摘要翻译：目的：提供具有改进的高温的焊接结构。强度和韧性，通过使用Cr基材作为待焊接对象而不破坏焊接性，并且确定C，Si，Mn，Cr，Mo，Ni，Mg和Fe等的成分比和Cr当量。在焊缝金属中。构成：焊接结构由8％Cr钢作为基材形成，焊接金属由0.05-0.2重量％C，0.05-1％Si，0.5-2％Mn，8-10.5％Cr，0.5 -2.5％Mo，0.1-1％Ni，0.05-0.6％Mg，余量为Fe和contg。 <= 14Cr当量，其中Cr当量 = Cr％+ 6XSi％+ 4XMo％+ 40X C％-2XMn％-4XNi％。 <= 0.03％P，<= 0.03％S，0-0.15％Nb，0-0.5％V和0-0.5％W根据需要加入到焊缝金属中。焊接结构的焊接部分在高温下长时间具有高强度。并具有很高的韧性。

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