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1. 发明专利

JPS59101252A Manufacture of long large-sized forged product 失效
标题翻译：长尺寸锻造产品的制造
公开(公告)号：JPS59101252A
公开(公告)日：1984-06-11
申请号：JP20936382
申请日：1982-12-01
申请人： Hitachi Ltd
发明人： AKAHORI KIMIHIKO , MAENO SHIGEO , KODAMA HIDEYO , MORISADA TOKIO
IPC分类号： C22C38/00 , B21J1/00 , B21J1/02 , B21J5/00 , B21K1/06
CPC分类号： B21J5/00
摘要： PURPOSE:To obtain an ingot and cast product that do not contain eutectic Nb carbide and precipitated crystals by limiting height/diameter ratio of an ingot of alloy steel that contain specified quantity of Nb, Cr and making the size in the direction of height larger than the size of radial direction by forging the ingot. CONSTITUTION:Molten metal of alloy steel containing 0.08-0.25% C, 0.02- 0.15% Nb, 9-12% Cr, 80%
摘要翻译：目的：通过限制含有规定量的Nb，Cr的合金钢锭的高度/直径比，获得不含共晶Nb碳化物和析出晶体的铸锭和铸造产品，并使其尺寸沿高度大于通过锻造锭的径向尺寸。构成：将含有0.08-0.25％C，0.02-0.15％Nb，9-12％Cr，80％Fe = wt％的合金钢的熔融金属浇铸在H / D为<= 1的模具中，其中H 高度不包括进料头，D为高度1/2 H的直径，并固化。通过在径向上施加压力来锻造所得的铸锭，使铸件的高度方向的尺寸大于径向尺寸。通过这种方式，可以获得诸如蒸汽轮机的转子轴之类的具有高机械性能的长的大型锻造产品。

2. 发明专利

JPH09296258A HEAT RESISTANT STEEL AND ROTOR SHAFT FOR STEAM TURBINE 失效
公开(公告)号：JPH09296258A
公开(公告)日：1997-11-18
申请号：JP11222896
申请日：1996-05-07
申请人： HITACHI LTD , JAPAN STEEL WORKS LTD
发明人： SHIGA MASAO , HIDAKA KISHIO , YAMADA NORIO , NAKAMURA SHIGEYOSHI , FUKUI HIROSHI , SHIMIZU NOBUO , KANEKO RYOICHI , HARADA YASUHIRO , WATANABE YASUO , FUJITA TOSHIO , MORISADA TOKIO , TANAKA YASUHIKO
IPC分类号： F01D5/02 , C21D9/28 , C21D9/38 , C22C38/00 , C22C38/22 , C22C38/24 , C22C38/26 , C22C38/30 , C22C38/32 , C22C38/54 , F01D5/06
摘要： PROBLEM TO BE SOLVED: To produce a heat resistant steel having >=10kgf/mm creep fracture strength for a hundred thousand hr at 650 deg.C and used for a rotor for a super- critical pressure steam turbine. SOLUTION: This heat resistant steel has a compsn. contg., by weight, 0.05 to 0.20% C,

3. 发明专利

JPH05345922A 失效
公开(公告)号：JPH05345922A
公开(公告)日：1993-12-27
申请号：JP17597792
申请日：1992-06-11
申请人： JAPAN STEEL WORKS LTD , HITACHI LTD
发明人： AZUMA TSUKASA , TANAKA YASUHIKO , SHIGA MASAO , FUKUI HIROSHI , TAN TOSHIMI , KANEKO RYOICHI , MORISADA TOKIO
IPC分类号： C21D9/28 , C22C38/00 , C22C38/46 , F01D5/02
摘要： PURPOSE:To increase the size of a turbine rotor by heating a turbine rotor element body composed of a heat resistant steel with specific composition up to specific temp., separately applying hardening under respectively specified conditions, and then performing tempering under specific conditions. CONSTITUTION:A turbine rotor element body is constituted of a heat resistant steel which has a composition consisting of, by weight, 0.15-0.4% C,

4. 发明专利

JPS5828328B2 失效
公开(公告)号：JPS5828328B2
公开(公告)日：1983-06-15
申请号：JP6671178
申请日：1978-06-05
申请人： HITACHI LTD
发明人： MORISADA TOKIO , WATANABE YASUO , KODAIRA KOJIRO
IPC分类号： C22C38/00 , C21D6/00 , C21D8/00 , C21D8/12 , C21D9/00 , H01F1/00

5. 发明专利

JPH09194946A PRODUCTION OF HIGH-LOW PRESSURE INTEGRATED TYPE TURBINE ROTOR 失效
公开(公告)号：JPH09194946A
公开(公告)日：1997-07-29
申请号：JP33467596
申请日：1996-11-29
申请人： JAPAN STEEL WORKS LTD , HITACHI LTD
发明人： AZUMA TSUKASA , TANAKA YASUHIKO , SHIGA MASAO , FUKUI HIROSHI , TAN TOSHIMI , KANEKO RYOICHI , MORISADA TOKIO
IPC分类号： F01D5/02 , C21D9/00 , C21D9/28 , C22C38/00 , C22C38/46
摘要： PROBLEM TO BE SOLVED: To allow a turbine rotor to combine excellent high temp. creep characteristics and excellent low temp. toughness by heating the whole body of a turbine rotor stock composed of a heat resistant steel having a specified compsn. to the same temp. and cooling the part equivalent to the high-medium pressure part at a cooling rate slower than that in the part equivalent to the low pressure part. SOLUTION: The compsn. of a turbine rotor stock is composed of a heat resistant steel contg., by weight, 0.15 to 0.4% C,

6. 发明专利

JPS6297745A METALLIC MOLD FOR FORMING SHELL MOLD 失效
公开(公告)号：JPS6297745A
公开(公告)日：1987-05-07
申请号：JP23733285
申请日：1985-10-25
申请人： HITACHI LTD
发明人： WATANABE KAZUHIRO , KUMAGAI YOUZOU , MORISADA TOKIO
IPC分类号： B22C9/06 , B22C13/08
摘要： PURPOSE:To obtain a metallic mold for forming a shell mold having high heat conductivity as well as hardness and tensile strength by subjecting the surface of a copper alloy mold formed by adding a limited weight ratio of zirconium to copper to hard chrome plating. CONSTITUTION:This metallic mold for forming the shell mold is formed by subjecting the coper alloy contg. 0.01-3.0wt% zirconium to hard chrome plating. The mold has the high heat conductivity and can be heated to a prescribed temp. over the entire part thereof with substantially no uneven hardening. Since the entire part of the mold is heated in a short period, the energy comsumption is reduced and the thermal straining of the mold is obviated. The mold has high adhesiveness by repetition of heating and cooling, and good wear resistance against sand. The life of the mold is thus extended.

7. 发明专利

JPS6219253B2 失效
公开(公告)号：JPS6219253B2
公开(公告)日：1987-04-27
申请号：JP20936382
申请日：1982-12-01
申请人： HITACHI LTD
发明人： AKAHORI KIMIHIKO , MAENO SHIGEO , KODAMA HIDEYO , MORISADA TOKIO
IPC分类号： C22C38/00 , B21J1/00 , B21J1/02 , B21J5/00 , B21K1/06

8. 发明专利

JPS60199563A INGOT MAKING METHOD OF HIGH-CHROMIUM STEEL CONTAINING NITROGEN 失效
公开(公告)号：JPS60199563A
公开(公告)日：1985-10-09
申请号：JP5570784
申请日：1984-03-23
申请人： HITACHI LTD
发明人： MORISADA TOKIO , OOMORI YOSHIBUMI , AKAHORI KIMIHIKO , KUNO KATSUKUNI , AIKAWA YOSHIO
IPC分类号： B22D7/00 , B22D7/12 , B22D27/20 , C22C38/00
摘要： PURPOSE:To prevent segregation of a giant carbide near the central hole of a steel ingot by melting a high-chromium steel contg. >=1 kinds of Nb and Ta and adding a reference value of N to the molten steel subjected to a vacuum degassing treatment then maintaining a nitrogen atmosphere in a casting mold, pouring the molten metal into the mold and casting the ingot. CONSTITUTION:A high-chromium steel contg. >=1 kinds of Nb and Ta is melted and a prescribed reference value of N is added to the molten steel subjected to a vacuum degassing treatment. A nitrogen atmosphere is then maintained in the mold and a molten steel is poured into the mold to cast an ingot. The ratio (H/D) between the height (H) and diameter (D) in the mold space is made 0.5-1. The chromium equiv. expressed by the equation for the high-chromium steel contg. N is made 5-7.

9. 发明专利

JPH0521668B2 失效
公开(公告)号：JPH0521668B2
公开(公告)日：1993-03-25
申请号：JP5570784
申请日：1984-03-23
申请人： HITACHI LTD
发明人： MORISADA TOKIO , OOMORI YOSHIBUMI , AKAHORI KIMIHIKO , KUNO KATSUKUNI , AIKAWA YOSHIO
IPC分类号： B22D7/00 , B22D7/12 , B22D27/20 , C22C38/00

10. 发明专利

JPS6130637A Method for melting zirconium alloy or titanium alloy 失效
标题翻译：熔炼锆合金或钛合金的方法
公开(公告)号：JPS6130637A
公开(公告)日：1986-02-12
申请号：JP14950484
申请日：1984-07-20
申请人： Hitachi Ltd
发明人： MORISADA TOKIO
IPC分类号： C22B9/20 , C22B34/12
摘要： PURPOSE: To obtain an ingot with no segregation by simultaneously melting a pipe filled with alloying elements into a pipe having the same length as an electrode and a pipe consisting essentially of a sponge metal-base compact while putting partition plates at prescribed intervals or below in a vacuum arc remelting furnace.
CONSTITUTION: Zr powder 10 is mixed with Sn powder 11, Fe powder 12 and Cr powder 13 in a mixer 14, and the mixture is charged into a metallic mold 15 and pressed to form a pellet 16. This pellet 16 is put in a Zr pipe 4. The pellet 16 is sealed with a Zr sealing plate 17, and the stages are repeated to have the same length pipe 4 as the electrode. The pipe 4 is then welded to the compact electrode consistiig essentially of the sponge metal and set in a vacuum arc remelting furnace. The pipe 4 and the electrode are melted by supplying electric current between the furnace and the electrode to obtain an ingot.
COPYRIGHT: (C)1986,JPO&Japio
摘要翻译：目的：通过将填充有合金元素的管同时熔化成与电极长度相同的管的管道和基本上由海绵金属基压块组成的管道而获得不偏析的锭，同时将隔板以规定间隔或更低的间隔放置真空电弧重熔炉。构成：将Zr粉末10与混合器14中的Sn粉末11，Fe粉末12和Cr粉末13混合，并将该混合物装入金属模具15中并压制形成颗粒16.将该颗粒16置于Zr 管道4.用Zr密封板17密封颗粒16，并且重复该阶段以与电极具有相同长度的管道4。然后将管4焊接到基本上由海绵金属组成的紧凑电极，并设置在真空电弧重熔炉中。通过在炉和电极之间提供电流来熔化管4和电极以获得锭。

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