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1. 发明专利

JPH04153426A PEDESTAL 失效
公开(公告)号：JPH04153426A
公开(公告)日：1992-05-26
申请号：JP27754590
申请日：1990-10-16
申请人： HITACHI METALS LTD , KAJIMA CORP
发明人： MATSUO HIDENARI , HARAFUJI KAZUYOSHI , SATO KUNIAKI , NAKAMURA YOSHIHIRO , TOMITA AKIO , SAEKI TOSHIO , YAMADA SHUNICHI , MAEDA SHOZO
IPC分类号： E04B1/24
摘要： PURPOSE:To prevent the distortion in the case of joining of pedestals and to promote strength by joining a stainless steel column and bottom plate with a pedestal hardware, and fixing the pedestal hardware on the foundation with anchor bolts buried into the concrete foundation. CONSTITUTION:A bottom plate 18 formed of a stainless steel column, in the shape of a flat plate and a pedestal hardware 8 to combine projections 82 and 83 formed in the shape of a square frame line corresponding thereto on the lower end of a stainless steel column 1 through a forging means are welded and joined, and the pedestal hardware 8 is fixed on the concrete foundation with anchor bolts buried thereinto. According to the constitution, it is prevented that distortion when the column 1 is joined with the pedestal hardware 8 or deformation acts on the bottom of the pedestal hardware 8, and rotating rigidity and strength can be promoted.

2. 发明专利

JPH04153427A PEDESTAL 失效
公开(公告)号：JPH04153427A
公开(公告)日：1992-05-26
申请号：JP27754690
申请日：1990-10-16
申请人： HITACHI METALS LTD , KAJIMA CORP
发明人： MATSUO HIDENARI , HARAFUJI KAZUYOSHI , SATO KUNIAKI , NAKAMURA YOSHIHIRO , TOMITA AKIO
IPC分类号： E04B1/24
摘要： PURPOSE:To promote the reliability of joining and the improvement of the environment of working by making both surface friction-joining of flat plate-like bottom plate sections and projection of pedestal hardwares formed in projections to the lower end of a steel column high-tension bolts. CONSTITUTION:Flat plate-like bottom plate sections 22 and plane-projected out-line-shaped projections 21 corresponding to an end-shaped part of the lower end of a steel column 1 are made to do friction-joining to the lower end of the steel column 1 through a high-tension bolt 8. After that, pedestal hardwares 2 are fixed on the concrete foundation with anchor bolts buried into the concrete foundation. According to the constitution, the reliability of joining performance and the strength of joining can be increased.

3. 发明专利

JPS6380952A MOLTEN SURFACE DETECTING ROD 失效
公开(公告)号：JPS6380952A
公开(公告)日：1988-04-11
申请号：JP22484086
申请日：1986-09-25
申请人： HITACHI METALS LTD
发明人： FURUSHIMA SEISHI , OKITSU TOSHIO , HARAFUJI KAZUYOSHI
IPC分类号： B22D17/30 , B22D18/04 , C04B35/58 , C04B35/584 , G01F23/24
摘要： PURPOSE:To have the corrosion resistance to non-ferrous molten metal, to improve the service life and to improve the detecting accuracy of molten surface position by specifying the material of a molten surface detecting rod. CONSTITUTION:The molten surface detecting rod is made of 'Sialon(R)' sintered body containing sinter-aiding agent composing of Si3N4, Al2O3, Y2O3 and AlN and non-oxidization kind conductive material and having OMEGA.cm electric resistivity. In this way, as it is light and has corrosion resistance to the molten metal and high strength, it is not corroded by non-ferrous molten metal and even if it receives the impact load, it is not broken. Further, as its surface is become to smooth by high density, the sticking of molten metal is prevented.

4. 发明专利

JPS6311574A THERMOCOUPLE PROTECTION TUBE AND MANUFACTURE 失效
公开(公告)号：JPS6311574A
公开(公告)日：1988-01-19
申请号：JP6349687
申请日：1987-03-18
申请人： HITACHI METALS LTD
发明人： FURUSHIMA SEISHI , HARAFUJI KAZUYOSHI , MATSUO HIDENARI
IPC分类号： C04B35/584 , C04B35/597 , C04B35/599 , C04B41/50 , C04B41/87 , G01K1/08 , G01K1/10

5. 发明专利

JPS62197241A CASTING METHOD 失效
公开(公告)号：JPS62197241A
公开(公告)日：1987-08-31
申请号：JP3876486
申请日：1986-02-24
申请人： HITACHI METALS LTD
发明人： NAKAMURA YUKIO , HARAFUJI KAZUYOSHI , IWASAKI TATSUO
IPC分类号： B22C9/02 , B22C9/08
摘要： PURPOSE:To reduce a casting cost by providing a sprue in the upper part of a flat plate-shaped part of a casting, disposing a molten metal receiving part in the lower part of the sprue and further inclining a casting mold at a specific angle with the horizontal direction. CONSTITUTION:The sprue 3 is provided in the upper part of the flat plate- shaped part 2 of the casting mold and the molten metal receiving part 4 is disposed in the lower part of the sprue 3; further the casting mold is installed by inclining the entire part thereof at 3-15 deg. with the horizontal direction. Since the sprue 3 is installed in the upper part of the flat plate-shaped part 2, the molten metal is filled in projecting parts 1, 1a without decreasing the temp. of the molten metal and the molten metal is smoothly fluidized by the presence of the molten metal receiving part 4. Since the entire part of the molten metal is inclined, the diversion and confluence of the molten metal in the casting mold are prevented. The generation of blowhole defects and sand inclusion defects are prevented by the above-mentioned method and therefore, the production cost is reduced.

6. 发明专利

JPS6238773A TORCH FOR GAS SHIELD ARC WELDING 失效
公开(公告)号：JPS6238773A
公开(公告)日：1987-02-19
申请号：JP17688085
申请日：1985-08-13
申请人： HITACHI METALS LTD , NISSAN MOTOR
发明人： MATSUNAGA EIHACHIROU , FURUSHIMA SEISHI , UENO SHINICHI , HARAFUJI KAZUYOSHI , INOUE TOMOHITO , KITSUTA MICHIO , NAKADA NORIAKI
IPC分类号： C04B35/584 , B23K9/26 , B23K9/29 , C04B35/58
摘要： PURPOSE:To reduce the wear of the hole of a contact tip and to prolong the life by controlling the sticking deposition of a spatter by fitting a ceramics body to the tip part of the contact tip and nozzle respectively in the torch for gas shield arc welding. CONSTITUTION:A ceramics body 11 is joined to the tip 10 of a contact tip 1 and ceramics body 16 is fitted to the tip part of a nozzle 2. The ceramics body 11 is of cylindrical shape and has the hole 12 having the same diameter approximately with that of the hole 6 of the contact tip 1 on its center. The joining by the adhesive material for high temp. of the heat resistant temp. is preferrable for the joining of the ceramics body 11 and contact tip 1. The ceramics of silicon nitride group is used from the viewpoint of wear resistance and spatter sticking resistance of the ceramics body 11 and the ceramics body 16.

7. 发明专利

JPH08100241A ASSEMBLY TYPE ROLLING ROLL 失效
公开(公告)号：JPH08100241A
公开(公告)日：1996-04-16
申请号：JP23697694
申请日：1994-09-30
申请人： HITACHI METALS LTD
发明人： OSHIMA MASAHIKO , HARAFUJI KAZUYOSHI
IPC分类号： B21B27/00 , B21B27/03 , C22C38/00 , C22C38/36
摘要： PURPOSE: To provide an assembly type rolling roll having high wear resistance and seizure resistance and excellent in cracking resistance. CONSTITUTION: In this roll, an outer layer 1, which is composed of an Fe-base alloy containing, by weight ratio, chemical components of 2-4% C, 0.5-4% Si, 0.1-1.5% Mn, 1-7% Cr, 2-10% Mo, and 2-10% V and has a metallic structure containing, by area ratio, 0.5-5% graphite, 0.2-10% MC carbide, and =70 HS hardness, is metallically joined to an inner layer 2 composed of cast steel, containing 0.1-2% C by weight ratio, or forged steel or graphite cast steel, and further, the resulting combined sleeve for constituting barrel is fitted and fixed to a shaft material. In this combined sleeve for constituting barrel, the value of '(cross-sectional area of outer layer)/(cross- sectional area of inner layer)' in the cross section at a right angle to a rotating shaft is regulated to

8. 发明专利

JPH0892698A ASSEMBLING TYPE ROLL FOR ROLLING 失效
公开(公告)号：JPH0892698A
公开(公告)日：1996-04-09
申请号：JP22948494
申请日：1994-09-26
申请人： HITACHI METALS LTD
发明人： NODA AKIRA , OSHIMA MASAHIKO , HARAFUJI KAZUYOSHI
IPC分类号： B21B27/00 , B21B27/03 , C22C37/00 , C22C38/00 , C22C38/24
摘要： PURPOSE: To produce an assembling type roll for rolling having high wear resistance and excellent in seizing resistance and cost effectiveness. CONSTITUTION: This roll is formed by engagingly fixing to an axial material a composite sleeve for constituting a barrel part constituted by an external layer composed of an Fe-base alloy contg. chemical components of, by weight, 2 to 4% C, 0.5 to 4% Si, 0.1 to 1.5% Mn, 1 to 7% Cr, 2 to 10% Mo and 2 to 10% V and having a metallic structure contg. a matrix structure, containing graphite by 0.5 to 5%, by area, 0.2 to 10% MC carbides and =70 HS hardness and an internal layer of a cast steel or a forged steel or a graphite cast steel contg. 0.1 to 2% C. The metallic structure of the external layer of the composite sleeve for constituting the barrel part may contain one or more kinds among M2 C carbides, M6 C carbides and M7 C3 carbides by 0.2 to 20%, by area, as well as the MC carbides. The external layer of the composite sleeve for constituting the barrel part may contain one or more kinds among 0.2 to 4% Ni, 2 to 10% W, 1 to 10% Co, 1 to 10% Nb, 0.01 to 2% Ti, 0.002 to 0.2% B and 0.02 to 1% Cu as well.

9. 发明专利

JPS62127149A ASSEMBLY TYPE DOUBLE CASTING MOLD FOR CENTRIFUGAL CASTING 失效
公开(公告)号：JPS62127149A
公开(公告)日：1987-06-09
申请号：JP26567385
申请日：1985-11-26
申请人： HITACHI METALS LTD
发明人： KATABUCHI AKIRA , HARAFUJI KAZUYOSHI , KIYONAGA MASAYOSHI
IPC分类号： B22D13/10
摘要： PURPOSE:To suppress the fluctuation in the stage of centrifugal casting and to obtain an outside shell layer having no defects such as segregation by providing members which support inside flasks while making deformation according to thermal expansion between the inside flasks and outside flasks. CONSTITUTION:A metallic mold 2 for a body part is fixed by means of the inside flasks 4, 4' and bolts 10 at both ends and is provided with plastic deforming or elastic deforming members 11 on the flange parts 4a, 4a' of the inside flasks 4, 4' in order to prevent the clattering and oscillation by the spaces between the inside flasks 4, 4' and outside flask 1. The members 11 are pressed by the inside flasks 4, 4' and outside flask 1 and is plastically formed when the mold 2 is expanded by the thermal expansion. The fluctuation during centrifugal casting is thereby suppressed and the outside shell layer having no defects such as segregation is obtd.

10. 发明专利

JPS6238772A GAS SHIELDED ARC WELDING TORCH 失效
公开(公告)号：JPS6238772A
公开(公告)日：1987-02-19
申请号：JP17687985
申请日：1985-08-13
申请人： HITACHI METALS LTD , NISSAN MOTOR
发明人： MATSUNAGA EIHACHIROU , FURUSHIMA SEISHI , UENO SHINICHI , HARAFUJI KAZUYOSHI , INOUE TOMOHITO , KITSUTA MICHIO , NAKADA NORIAKI
IPC分类号： C04B35/584 , B23K9/26 , B23K9/29 , C04B35/58
摘要： PURPOSE:To suppress the adhesion of a spatter, to peel it off easily even if it is accumulated and to extend the used time of a nozzle by providing a nozzle which installing a ceramic body being excellent in the peelig property of the spatter to a tip on a welding torch. CONSTITUTION:A cylindrical fit part 10 is provided on both ceramic body 9 and nozzle 2, the fit part 10 is a heat resisting adhesive agent, a diffused junction, etc., and the ceramic body 9 is installed to the tip part of the nozzle 2. As for the ceramic body 9, the ceramics of a silicon nitride compound are used for its spatter adhesion resistance. That is to say, it is obtained by sintering a mixture consisting of >=70wt% Si3N4 containing >=65wt% alpha phase,

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