专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明专利

JP2000288754A LASER BEAM WELDING METHOD EXCELLENT IN LOW TEMP. TOUGHNESS AND ELECTRON BEAM WELDING METHOD 失效
公开(公告)号：JP2000288754A
公开(公告)日：2000-10-17
申请号：JP10042099
申请日：1999-04-07
申请人： NIPPON STEEL CORP
发明人： KOJIMA KAZUHIRO , OKITA SHIGERU , FUJI MASAO , AIHARA SHUJI , HOSHINO MANABU , SAITO NAOKI , TSUZUKI TAKESHI
IPC分类号： B23K15/00 , B23K26/21 , B23K103/04 , C22C38/00 , C22C38/14 , C22C38/58 , B23K26/00
摘要： PROBLEM TO BE SOLVED: To provide a welding method by stably making the micro structure of a weld metal an acicular ferrite and obtaining a high toughness weld metal in the case of welding by a laser beam or an electron beam. SOLUTION: In a laser beam or electron beam welding method to weld a steel material having a composition consisting of, by weight, 0.01-0.15% C, 0.01-1.5% Si, 0.2-2% Mn,

2. 发明专利

JPH10313214A ANTENNA AND ITS MANUFACTURE 失效
公开(公告)号：JPH10313214A
公开(公告)日：1998-11-24
申请号：JP12254197
申请日：1997-05-13
申请人： NIPPON STEEL CORP
发明人： KITAGUCHI SABURO , FUJI MASAO , UEMATSU MASAHIRO , TAKAHASHI SHINJI
IPC分类号： H01P11/00 , H01Q13/22
摘要： PROBLEM TO BE SOLVED: To provide a waveguide antenna in which a slot plate and a board are bonded surely with high precision. SOLUTION: A slot plate 1 and a board 2 are made of an Mg aluminum alloy, and a junction plane of the slot plate 1 and the board 2 is diffused and bonded by being heated and pressed at a temperature at or around a solid-liquid coexistent region of the aluminum alloy. Or the slot plate 1 or the board 2 is made of an Mg aluminum alloy and the other is made of an Si aluminum alloy. Or the slot plate 1 or the board 2 is made of a Cu aluminum alloy and the other is made of an Si aluminum alloy.

3. 发明专利

JPH09314334A HIGH SPEED GAS SHIELD ARC WELDING EQUIPMENT AND METHOD THEREFOR 失效
公开(公告)号：JPH09314334A
公开(公告)日：1997-12-09
申请号：JP15190396
申请日：1996-05-24
申请人： NIPPON STEEL CORP , MITSUBISHI HEAVY IND LTD
发明人： KODAMA KATSU , KONO TAKAYUKI , KOJIMA KAZUHIRO , TANAKA TAKASHI , FUJI MASAO , KUBOTA HARUTOSHI , KAMATA MASAO
IPC分类号： B23K9/173 , B23K9/12
摘要： PROBLEM TO BE SOLVED: To highly speedily execute fillet welding and to efficiently execute arc welding at a narrow part by individually feeding each welding wire of an advancing twin wire welding torch energized individually and a following twin wire welding torch. SOLUTION: Onto an advancing welding torch 5 provided with two welding wires 1, 2 through an insulation plate 17 and a following welding torch provided with two of welding wires 3, 4, tubes 15, 16 are arranged on the fore and back sides respectively and a shield gas is supplied. These wires 1 to 4 are made as the consumable electrodes and each of them has an individual wire feeding means respectively. These wires 1, 2 are energized individually, the wires 3, 4 are energized at the same time or individually and arc is generated inbetween a base material 22, while welding pools 18 to 21 are formed, moved to the arrow mark direction and a welded metal 23 is formed. Therefore, the arc force is spread to four wires, the retreat of the welding pool is avoided, even in the case of the high speed welding of the degree of >=2.5m/min, the bead without under-cut can be formed.

4. 发明专利

JPH09308987A SUBMERGED ARC WELDING WIRE EXCELLENT IN LOW TEMPERATURE TOUGHNESS 失效
公开(公告)号：JPH09308987A
公开(公告)日：1997-12-02
申请号：JP14652296
申请日：1996-05-17
申请人： NIPPON STEEL CORP
发明人： KOJIMA KAZUHIRO , KOSEKI TOSHIHIKO , OKITA SHIGERU , FUJI MASAO
IPC分类号： B23K9/18 , B23K35/30 , C22C38/00 , C22C38/06 , C22C38/14
摘要： PROBLEM TO BE SOLVED: To provide stable low temperature toughness without being affected by Al to be mixed in the weld metal through the base metal dilution by containing C, Si, Mn, Mg and Al at the prescribed composition. SOLUTION: A submerged arc welding wire has a composition consisting of, by weight, 0.01-0.10% C, 0.01-0.50% Si, 0.50-2.50% Mn, 0.10-1.0% Mg, and 0.001-0.50% Al, and the balance Fe with inevitable impurities. The structure most excellent in the low temperature toughness is acicular ferrite AF. In order to stably obtain AF without being affected by the Al quantity in steel, it is effected to use the oxide of the element whose affinity with oxygen is stronger than that of Al as a core of transformation. It is necessary that the oxide which can be the core in generating AF is excellent in matching with α iron. For example, because Mg is stronger than Al in the affinity with oxygen, MgO- Al2 O3 can be stably generated even when the Al quantity in steel is fluctuated.

5. 发明专利

JPH09308975A MANUFACTURE OF BOX TYPE STEEL STRUCTURAL MEMBER 失效
公开(公告)号：JPH09308975A
公开(公告)日：1997-12-02
申请号：JP14652196
申请日：1996-05-17
申请人： NIPPON STEEL CORP
发明人： FUJI MASAO , OKITA SHIGERU , KOYAMA KUNIO
IPC分类号： B23K25/00 , B23K9/00 , B23K9/02
摘要： PROBLEM TO BE SOLVED: To prevent low temperature cracking even in the high tensile steel by temporarily assembling two webs, two flanges and diaphragms into a box shape, performing the non-consumable nozzle type electroslag welding to the flanges and webs, and welding four corners formed of four side plates. SOLUTION: A diaphragm 3 is placed inside four steel side plates 1, 2 of 580-1050MPa in tensile strength and 30-120mm in thickness, and temporarily assembled into a box-shaped structure. Holes 5 are made in an outer flange 1 so as to be communicated with columnar grooves 7 for welding the diaphragm, and the non-consumable nozzle type electroslag welding is performed. Then, the structure is turned by 90 deg., holes 6 are made in the inner side webs 2, and the non-consumable nozzle type electroslag welding is performed. Corner joint manual welding 8 of four corners formed of side plates is performed. Because the corner welding of the side plates is not performed, the restriction force after the electroslag welding is small, and low temperature cracking is difficult to generate.

6. 发明专利

JPH04124229A METHOD FOR ELECTRON BEAM MELTING OF TITANIUM ALLOY 失效
公开(公告)号：JPH04124229A
公开(公告)日：1992-04-24
申请号：JP24254390
申请日：1990-09-14
申请人： NIPPON STEEL CORP
发明人： FUKUMOTO SHIGEO , NAKAO RYUJI , TAKEUCHI HIDEMA , FUJI MASAO
IPC分类号： C22B9/22 , C22B34/12
摘要： PURPOSE:To stabilize the quality of an ingot by regulating the range of the surface temp. in the central part of a melting pool in a hearth to a specified one, regulating the range of its melting vacuum degree to a specified one and executing its componental control by the relationship between a previously set surface temp. and the evaporation of the alloy components. CONSTITUTION:A titanium alloy is subjected to electron beam melting. Then the range of the surface temp. in the central part 8 of a melting pool in a hearth 4 is regulated to a one from the temp. higher than the m.p. of the titanium alloy by 50 deg.C to 2000 deg.C, and the range of its melting vacuum degree is regulated to the one of 5X10 to 1X10 Torr. Next, the componental control of the ingot is executed by the relationship between the previously set surface temp. in the central part 8 of the melting pool in the hearth 4 and the evaporation of the alloy components. In this way, its remelting caused by componental deviation can be evaded.

7. 发明专利

JPH0266129A METHOD FOR REGULATING COMPOSITION OF TITANIUM AND TITANIUM ALLOY IN ELECTRON BEAM MELTING 失效
公开(公告)号：JPH0266129A
公开(公告)日：1990-03-06
申请号：JP21362588
申请日：1988-08-30
申请人： NIPPON STEEL CORP
发明人： FUKUMOTO SHIGEO , FUJI MASAO
IPC分类号： C22B9/22 , C22C1/02
摘要： PURPOSE:To make the compsn. of a Ti (alloy) ingot uniform by feeding raw materials from plural feeders into a hearth at feeding rates separately regulated in accordance with the desired compsn. and melting the raw materials in the hearth. CONSTITUTION:Principal raw material for Ti such as sponge titanium in a feeder 7a and additive raw materials such as Fe2O3 and raw materials for alloying in feeders 7b, 7c are fed into a hearth 8 at feeding rates separately regulated in accordance with the desired compsn. of an ingot. The raw materials fed into the hearth 8 are melted with electron beams 1 and poured into a casting mold 4. The compsn. of the resulting ingot 5 can be accurately regulated.

8. 发明专利

JPH01159334A METHOD OF ELECTRON BEAM MELTING FOR TITANIUM 失效
公开(公告)号：JPH01159334A
公开(公告)日：1989-06-22
申请号：JP31743987
申请日：1987-12-17
申请人： NIPPON STEEL CORP
发明人： FUKUMOTO SHIGEO , FUJI MASAO , TAKEUCHI HIDEMA
IPC分类号： C22B9/22 , C22B34/12
摘要： PURPOSE:To prevent the occurrence of the surface defects of a Ti ingot and to carry out electron beam melting in high yield by specifying the relationships among the output of electron beam, the cross-sectional area of a mold, and casting speed and also specifying the irradiation pattern of electron beam. CONSTITUTION:At the time of melting Ti, conditions are set up so that 0.1XS ), and V(kg/Hr) represent the output of electron beam, the cross-sectional area of a mold, and casting speed, respectively. Further, the center of irradiation of electron beam in the mold is located at a position within 40mm from the walls of the mold, and melting is carried out while applying electron beam. By this method, the surface defects of ingot having various sectional forms can be prevented and the amount of surface grinding can be reduced.

9. 发明专利

JPS57177866A CONTINUOUS CASTING METHOD FOR STEEL 失效
公开(公告)号：JPS57177866A
公开(公告)日：1982-11-01
申请号：JP6326681
申请日：1981-04-28
申请人： NIPPON STEEL CORP
发明人： NAKANO TAKETO , FUJI MASAO , MIZOGUCHI SHIYOUZOU
IPC分类号： B22D11/10 , B22D11/108 , B22D11/11 , B22D11/111 , B22D11/128 , B22D11/20
摘要： PURPOSE:To eliminate conditioning of an ingot at all by regulating the thickness of a molten powder pool by the prescribed equation in relation to the wave motion amplitude of the molten steel surface in a mold, a negative strip period, etc. and casting the ingot. CONSTITUTION:An ingot is cast by regulating the thickness Pmm. of the molten powder pool formed from mold additive powder on the molten steel surface in a mold, the wave motion amplitude (a)mm. of the molten steel surface in the mold, a negative strip period T min when the descending speed of the mold is higher than the drawing speed of the ingot, the descending speed (m)mm. of the mold in said period, and the drawing speed Vm/min of the ingot by the following relation: P>=m-1,000XVXR+a. Further, more preferably, the additive powder of which the viscosity eta at 1,300 deg.C is given by the following formula is used: 0.9/ V

10. 发明专利

JP2001279324A METHOD FOR PRODUCING STEEL FOR LASER WELDING 失效
公开(公告)号：JP2001279324A
公开(公告)日：2001-10-10
申请号：JP2000089218
申请日：2000-03-28
申请人： NIPPON STEEL CORP
发明人： KOJIMA KAZUHIRO , OKITA SHIGERU , FUJI MASAO , AIHARA SHUJI , HOSHINO MANABU , SAITO NAOKI , TSUZUKI TAKESHI
IPC分类号： B21B3/00 , B21B45/08 , C21D8/00 , C21D8/10 , C22C38/00 , C22C38/06 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To provide a method for producing a steel excellent in laser weldability even without removing scale. SOLUTION: In this method for producing a steel for laser welding having a composition containing, by mass, 0.01 to 0.20% C, 0.01 to 1.5% Si, 0.2 to 2.0% Mn, =5 MPa at hot rolling is performed on at least either side of the inlet side or the outlet side of a rolling mill, at least one time. Furthermore, one or more selected from Nb, V, Mo, Cu, Ni, Cr and B are preferably incorporated therein.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式