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1. 发明专利

JPH0671434A METHOD FOR WELDING CLEAN CHAMBER 失效
公开(公告)号：JPH0671434A
公开(公告)日：1994-03-15
申请号：JP12630291
申请日：1991-05-30
申请人： OMI TADAHIRO , HITACHI SHIPBUILDING ENG CO , NICHIZOU SEIMITSU KENMA KK
发明人： OMI TADAHIRO , NAKAJIMA HIROYUKI , OTSUKA TAKAO , KITAGAWA SHIYOUICHI , BABA YOSHIYASU , SATO KENJI
IPC分类号： B23K9/00 , B23K9/16 , B23K9/29 , B23K9/32 , H01L21/02
摘要： PURPOSE:To prevent a welding block from sticking with welding fume, metal vapor, etc., by welding while sucking and discharging the welding fume and the metal vapor developed during welding through a welding torch in the argon gas atmosphere. CONSTITUTION:A preliminary assembled clean chamber 1 is set in a closed chamber 3 for welding operation and the rough suction is arranged with an vacuum pump 7. Successively, nitrogen gas is introduced into the closed chamber 3. This work is repeated in several times to make moisture and oxygen in the closed chamber 3 into the low values. Finally, after introducing the argon gas and making vacuum degree in the closed chamber 3 highly with a turbomolecular pump 8, the welding operation of the clean chamber 1 is executed. At the time of executing the welding operation, the welding fume, the metal vapor, etc., generated at the time of welding are exhausted to the outer part through the welding torch 4. By this method, the clean chamber having extremely high cleanness is obtd.

2. 发明专利

JPH06142919A WELDING METHOD FOR VESSEL FOR MANUFACTURING SUPER-LSI 失效
公开(公告)号：JPH06142919A
公开(公告)日：1994-05-24
申请号：JP28336492
申请日：1992-10-22
申请人： OMI TADAHIRO , HITACHI SHIPBUILDING ENG CO , NICHIZOU SEIMITSU KENMA KK
发明人： OMI TADAHIRO , OSAWA MORIHIKO , NAKAJIMA HIROYUKI , OTSUKA TAKAO , KITAGAWA SHIYOUICHI , NAKATANI MITSUYOSHI , BABA YOSHIYASU , SATO KENJI
IPC分类号： B23K9/00 , B23K9/16 , B23K9/23 , B23K9/32 , B23K101/12 , B23K101/40 , H01L23/02
摘要： PURPOSE:To dispense with a work such as grinding, precise cleaning, etc., being a post-treatment of welding, to simplify the manufacturing process, and also, to reduce the manufacturing cost. CONSTITUTION:According to this welding method for a vessel, at the time of assembling and welding the vessel for manufacturing a super-LSI by using stainless steel in which the content on Mn is

3. 发明专利

JPH0775871A WELDING METHOD FOR VESSEL FOR MANUFACTURING VLSI 失效
公开(公告)号：JPH0775871A
公开(公告)日：1995-03-20
申请号：JP2872894
申请日：1994-02-28
申请人： OMI TADAHIRO , HITACHI SHIPBUILDING ENG CO , NICHIZOU SEIMITSU KENMA KK
发明人： OMI TADAHIRO , OSAWA MORIHIKO , NAKAJIMA HIROYUKI , OTSUKA TAKAO , KITAGAWA SHIYOUICHI , NAKATANI MITSUYOSHI , BABA YOSHIYASU , SATO KENJI
IPC分类号： B23K9/00 , B23K9/16 , B23K9/23 , H01L23/02
摘要： PURPOSE:To suppress the production of welding burning and metallic fumes to the utmost, obviate the work such as grinding and precise cleaning which is aftertreatment of welding and simplify the manufacturing process. CONSTITUTION:When the vessel for manufacturing VLSI is assembled and welding by using stainless steel having the content of oxygen of

4. 发明专利

JPH07223072A METHOD FOR PENETRATION WELDING OF PIPING AND CORE FOR PENETRATION WELDING OF PIPING 失效
公开(公告)号：JPH07223072A
公开(公告)日：1995-08-22
申请号：JP1796794
申请日：1994-02-15
申请人： OMI TADAHIRO , HITACHI SHIPBUILDING ENG CO , HEC CORP
发明人： OMI TADAHIRO , NAKATANI MITSUYOSHI , NAKAJIMA HIROYUKI , OSAWA MORIHIKO , OTSUKA TAKAO , KITAGAWA SHIYOUICHI , YONEZAWA MASAHISA , BABA YOSHIYASU , SATO KENJI
IPC分类号： B23K9/16 , B23K9/028 , B23K9/035 , B23K9/32 , B23K37/00
摘要： PURPOSE:To prevent adhesion of fume on the inner surface of a tube by arranging a core in the tube, and accelerating the back shield gas at the part to be welded to carry away the fume produced at the part to be welded. CONSTITUTION:In the penetration welding of tubes 1, 2, a core 4 is inserted and arranged in a tube 2. The compressed air is fed from a compressed air feeding tube 7, a leg body 6 of the core 4 is extended, a seating plate 6a is abutted on the inner surface of the tube 2, and the core body 5 is mounted at the position of the axial center O of the tube 2. After the tube 1 is positioned at the welding position, the back shield gas G is fed from the tube 1 side to the part 3 to be welded. The flow speed V of the back shield gas G facing the part 3 to be welded is set to >=120mm/sec. by the effect of the core body 4. Then, the TIG welding is executed by moving the part 3 to be welded from the outer circumference side of the tubes 1, 2 around the circumference by a TIG electrode 8. The fume produced by the welding is carried away with the back shield gas G, and is not adhered to the inner surface of the tube 1.

5. 发明专利

JPH08267250A TIG WELDING METHOD AND TORCH DEVICE FOR TIG WELDING 失效
公开(公告)号：JPH08267250A
公开(公告)日：1996-10-15
申请号：JP7219395
申请日：1995-03-30
申请人： OMI TADAHIRO , HITACHI SHIPBUILDING ENG CO
发明人： OMI TADAHIRO , NAKATANI MITSUYOSHI , KITAGAWA SHIYOUICHI , OSAWA MORIHIKO , OTSUKA TAKAO , NAKAJIMA HIROYUKI , BABA YOSHIYASU , SATO KENJI
IPC分类号： B23K9/167 , B23K9/29
摘要： PURPOSE: To prevent sticking of metal fumes by injecting shield gas from the surrounding of a torch main body and sucking metal fumes while sucking shield gas from suction passage in a main body so as to suppress welding burn. CONSTITUTION: In executing TIG welding with a torch device 1 for welding, shield gas is supplied from a torch main body 2 in a shield box 4 and is sucked from a gas exhaust port 8 of torch main body 2. The shield gas is injected by a prescribed quantity from a gas injecting plate 5 at the lower face of shield box 4, passing the clearance (d) between the gas injecting plate and surface (b) of weld zone together with the metal fumes generated from molten pool, is sucked from the surrounding of electrode 3 of tip of torch main body 2 into a suction passage 2a and is exhausted from the exhaust port 8. By this method, sticking of metal fumes near weld zone is prevented, the weld zone is cooled down to a prescribed temp. by injected shield gas, the oxidation of weld zone due to welding heat, that is, welding burn is prevented.

6. 发明专利

JPH07116851A METHOD FOR WELDING STAINLESS STEEL 失效
公开(公告)号：JPH07116851A
公开(公告)日：1995-05-09
申请号：JP26285693
申请日：1993-10-21
申请人： OMI TADAHIRO , HITACHI SHIPBUILDING ENG CO
发明人： OMI TADAHIRO , NAKATANI MITSUYOSHI , NAKAJIMA HIROYUKI , OSAWA MORIHIKO , OTSUKA TAKAO , KITAGAWA SHIYOUICHI , BABA YOSHIYASU , SATO KENJI
IPC分类号： B23K9/16 , B23K9/23 , B23K9/32
摘要： PURPOSE:To simplify the manufacturing process and to reduce the manufacturing cost by specifying the atmospheric water content quantity of inert gas and sucking metallic fumes at the specified flow rate. CONSTITUTION:After the stainless steel 1 is arranged in a vacuum chamber, the degree of vacuum in the vacuum chamber is regulated to about 1X10 Torr. The inert gas is introduced into the vacuum chamber and the atmospheric water content quantity of the inert gas is regulated to

7. 发明专利

JPH08257746A WELDING EQUIPMENT AND WELDING METHOD 失效
公开(公告)号：JPH08257746A
公开(公告)日：1996-10-08
申请号：JP6535295
申请日：1995-03-24
申请人： HITACHI SHIPBUILDING ENG CO
发明人： OTSUKA TAKAO , OSAWA MORIHIKO , NAKAJIMA HIROYUKI , MIKATA MASAKI , AMIHOSHI TAKESHI , FUJIWARA KATSUJI
IPC分类号： G21F5/008 , B23K9/00 , B23K9/127 , B23K37/02 , G21F5/00
摘要： PURPOSE: To precisely set a targeting position of a welding torch along weld line by guiding a welding torch along weld line while a guide roller supports a welding torch and is abutted/rolled on an object to be welded. CONSTITUTION: An object to be welded consisting of first/second cylinders 2, 3 and a heat transfer fin 10 is supported turnable by a turning roller 16. A mounting table 20, which is laid with a guide rail 22 parallel to weld line neighboring with the roller 16, is arranged. A running truck 23 is arranged on the guide rail free to run. A boom 26 of prescribed length is mounted at the side of object to be welded of running truck 23. The boom 26 is guided along the guide rail 22 by a guide roller 27. A welding torch 33 is arranged at the tip part of boom 26. Guide rollers 38, 39 arranged at the side of boom 26 supports the torch 33 and is abutted/rolled on objects 2, 3, 6, to be welded so as to guide the welding torch 33 along weld line. By this method, the weld line having deep depth at narrow part is easily welded.

8. 发明专利

JPH0476188A TUNNELING SHAFT WALL STRUCTURE AND TUNNELING METHOD 失效
公开(公告)号：JPH0476188A
公开(公告)日：1992-03-10
申请号：JP18985090
申请日：1990-07-18
申请人： HITACHI SHIPBUILDING ENG CO
发明人： NAKAJIMA HIROYUKI
IPC分类号： E21D5/04 , E21D9/06
摘要： PURPOSE:To aim at the simplification of operation by forming a bar arrangement material in a part, where a shield machine pieces through, of a shaft wall body of reinforced concrete, with fiber reinforced plastics, and making a through part of the shaft wall body so as to be bored and crushed by a cutter head. CONSTITUTION:A water-stop flange 14 is installed in a starting through part 12a for a shield machine 13, of a reinforced concrete wall body 12, while a fiber reinforced plastic bar arrangement material 16 is connected to a steel bar arrangement material 15 and formed in an around a connecting part of this flange 14. Next, a cutter head 22 is rotated and driven, a driving jack 26 is extended, and a shield body 21 is advanced forward. Then, the head 22 is inserted into the flange 14, and a concrete wall 17 is bored and crushed together with the bar arrangement material 16, forming a starting port, making it rush into natural ground 28. Accordingly, operation is simplified and, what is more, a construction period is reducible.

9. 发明专利

JPS6055183B2 失效
公开(公告)号：JPS6055183B2
公开(公告)日：1985-12-04
申请号：JP4694182
申请日：1982-03-23
申请人： HITACHI SHIPBUILDING ENG CO
发明人： KUREISHI MASAYOSHI , MAEHARA KENJI , HIRAI YASUO , KAWASE RYOICHI , MINEHISA SETSUJI , NAKAJIMA HIROYUKI
IPC分类号： B05B7/22

10. 发明专利

JPH08215851A WELDING METHOD 失效
公开(公告)号：JPH08215851A
公开(公告)日：1996-08-27
申请号：JP3125995
申请日：1995-02-21
申请人： HITACHI SHIPBUILDING ENG CO
发明人： MAEHARA KENJI , OSAWA MORIHIKO , NAKAJIMA HIROYUKI , ABE HARUO , KURODA TAKESHI
IPC分类号： B23K9/02 , B23K9/12 , B23K9/127
摘要： PURPOSE: To improve welding quality without requiring skilled technology by determining the targeting position in the vertical direction of welding arc based on the value obtained by use of the ratio of each deposition cross section area of first weld bead/second weld bead. CONSTITUTION: Welding is executed to the groove formed to an object D to be welded at horizontal position. At this time, plural weld layers A1 -A8 are formed approximately in equal width in the horizontal direction, in each weld layer, plural weld beads 1-11 having a different number of pieces in the vertical direction are formed. In forming the weld bead, the targeting position in the vertical direction of welding arc is determined based on the value obtained by use of the ratio of each deposition cross section area of a first bead 1 and second bead 2 applied to each weld layer A1 -A8 . This value is obtained by use of the following formula. (second bead deposition cross section area)/(first bead cross section area)×α+β+((the number of welded layers-2)×(bead deposition cross section area))/(deposition bead layer thickness) wherein α, β are constant.

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