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1. 发明专利

JPH11104827A NOZZLE STUB MAG WELDING METHOD AND WELDING MACHINE 失效
公开(公告)号：JPH11104827A
公开(公告)日：1999-04-20
申请号：JP26984397
申请日：1997-10-02
申请人： MITSUBISHI HEAVY IND LTD
发明人： TAKAGISHI MASAHARU , NISHIKI HISASHI , KAMEI HIROMASA , KUSHIMOTO SHOJI , MASAKI TSUTOMU , FUKUNAGA YOSHIAKI , IMADA TAKEHIKO
IPC分类号： B23K9/173 , B23K9/022 , B23K9/028 , B23K9/095 , B23K9/12 , B23K33/00 , B23K37/02
摘要： PROBLEM TO BE SOLVED: To realize automatic MAG welding and to enable high efficiency/high quality mounting by welding when a nozzle stub is subjected to mounting by welding to a member to be mounted. SOLUTION: A parallel narrow groove 3 is formed around a nozzle stub 2, after discharge of a shield gas is started from an auxiliary shield ring 9 toward the groove 3, while rotation of a welding torch 7 and a curved tip 8 make a wire tip depict a circular arc and oscillate, the inside of a groove 3 is welded by turning/travelling the welding torch 7, the welding torch is turned by one round around the stub 2 and then reversed, by repeating this, a weld metal is laminated, mounting of the stub 2 to a member 1 to be mounted is made.

2. 发明专利

JPH06180278A TESTING METHOD AND TEST PIECE FOR WELD CRACK 失效
公开(公告)号：JPH06180278A
公开(公告)日：1994-06-28
申请号：JP33419092
申请日：1992-12-15
申请人： MITSUBISHI HEAVY IND LTD
发明人： NAYAMA RISUKE , IMADA TAKEHIKO
IPC分类号： G01N1/28 , G01N3/00
摘要： PURPOSE:To easily provide with a test bead aver the entire length, in longitudinal direction, of a specified bevel by doing test weld while supplying the weld part of bevel, from outside of a test piece that is on the extension line of weld line, with a weld rod straight. CONSTITUTION:At the center of a U-shape test piece 1, a U-piece bevel 2 is farmed, and, an either end side of it in longitudinal direction, a round hole part 3 is provided. At the center on the left side of the test piece 1, bore parts 4 that make the outside of the test piece 1 communicate with the bevel 2 straight are provided in the longitudinal direction, each orthogonal to the direction. Firstly, the test piece 1 is heated to a specified temperature, and a weld rod 102 is inserted from the outside of the test piece 1, or the left side of the bore part 4, into the inside of the bevel 2, so that the tip of it reaches the right end side of the bevel 2. Then the tips of an electrode 103 and the weld rod 102 are moved collectively at a specified speed to the left end side, for constantly generating a test bead 101. The test piece 1 is left alone far a specified period, and the cracks occurring at the bevel 2 and the bead 101 are confirmed, for calculation of crack rate.

3. 发明专利

JPS6233733A CU ALLOY 失效
公开(公告)号：JPS6233733A
公开(公告)日：1987-02-13
申请号：JP17235585
申请日：1985-08-07
申请人： MITSUBISHI HEAVY IND LTD
发明人： YAMAMOTO YOSHIHIRO , KIUCHI MASATO , WATANABE TETSURO , SHIGE TAKASHI , IMADA TAKEHIKO
IPC分类号： C22C9/00
摘要： PURPOSE:To obtain a Cu alloy having superior melt sticking and wear resistances and satisfactory electric conductivity by densely dispersing a high m.p. metal, a compound or an alloy thereof in the surface layer part of a Cu alloy. CONSTITUTION:A Cu alloy contg. a high m.p. metal or a compound thereof dispersed by the usual amount is formed into the desired shape by plastic working, mechanical working and/or heat treatment. The alloy is then heat treated to densely disperse the 2nd phase of the high m.p. metal, a compound or an alloy thereof in the surface layer part. At least one among Cr, Mo and W is used as the high m.p. metal.

4. 发明专利

JPS613683A HOLLOW ELECTRODE TYPE TIG ARC WELDING METHOD 失效
公开(公告)号：JPS613683A
公开(公告)日：1986-01-09
申请号：JP12470084
申请日：1984-06-18
申请人： MITSUBISHI HEAVY IND LTD
发明人： KAMEI HIROMASA , IMADA TAKEHIKO , BETSUPU SEIJI
IPC分类号： B23K9/16 , B23K9/167
摘要： PURPOSE:To prevent the generation of a defect such as lack of fusion in a weld zone by feeding an inert gas to the inside of a hollow tungsten electrode and controlling the spread of an arc. CONSTITUTION:The inert gas 13 is supplied to the hollow part 12 of the cylindrical hollow electrode 11 and arc welding is executed while the gas is ejected from the arc generating end of the electrode 11. A supply pipe 4 is branched to two pipes 15, 16. The gas 13 is supplied impulsively by an intermittent pump 17 from the one pipe 15 and the gas 13 is supplied at a specified flow rate from the other supply pipe 16. The arc 3 is thus spread to the outside by the inert gas ejected to the central part of the TIG arc 3. The spread of the arc is freely controllable by changing the ejection rate of the inert gas.

5. 发明专利

JPS60231571A ROOT PASS METHOD 失效
公开(公告)号：JPS60231571A
公开(公告)日：1985-11-18
申请号：JP8598684
申请日：1984-04-27
申请人： MITSUBISHI HEAVY IND LTD
发明人： KAMEI HIROMASA , IMADA TAKEHIKO , FUKUNAGA YOSHIAKI , NITSUTA TETSUO , SUGIMOTO YUUSAKU , OOSUMI TETSUYA
IPC分类号： B23K33/00 , B23K9/02 , B23K9/022 , B23K9/173
摘要： PURPOSE:To reduce welding time and to improve the quality of a weld zone by inserting a wire into a groove space and welding circularly the groove while changing over continuously and alternately a high-current spray arc and low- current short arc thereby executing satisfactory penetration welding. CONSTITUTION:The high-current spray arc 31 and the low-current short arc 32 are continuously and alternately changed over by using a current conducting chip 29 and a consumable electrode wire 30 while a wire 28 of a wire guide nozzle 27 is inserted into the space of the groove between members to be welded. Said arcs are moved circularly in the weld line direction to form penetration beads 33. The breakthrough of the arc 32 and molten metal on the front is thus prevented even if there is variance in the size of the space of the groove between the members to be welded. The formation of the molten metal to fill the space of the groove is made possible by the insertion of the wire 28 of the nozzle 27 into said space.

6. 发明专利

JPS5934476B2 JPS5934476B2 - 失效
公开(公告)号：JPS5934476B2
公开(公告)日：1984-08-22
申请号：JP15387879
申请日：1979-11-28
申请人： Mitsubishi Heavy Ind Ltd
发明人： SHIMOYAMA HIROSHI , IMADA TAKEHIKO , KAWAI KYOKAZU , YOSHIDA KAZUHIKO , NISHINA NAOYUKI , FUKAYA TOSHIO
IPC分类号： B23K9/00 , B23K9/013 , B23K9/028

7. 发明专利

JPS58110182A WELDING METHOD 失效
公开(公告)号：JPS58110182A
公开(公告)日：1983-06-30
申请号：JP20687781
申请日：1981-12-23
申请人： MITSUBISHI HEAVY IND LTD
发明人： KAMEI HIROMASA , IMADA TAKEHIKO
IPC分类号： B23K9/16
摘要： PURPOSE:To eliminate the need for grinder work after welding by blowing a gas of the same components as those of a shielding gas to the areas near the boundaries between a molten pool and base materials during welding thereby widening the molten metal to the other side and improving the wettability of the molten metal and the base materials. CONSTITUTION:In TIG welding, GMA welding, plasma welding, etc., a forming gas 9 of the same components as those of a shielding gas 5 is blown from a blowing pipe 8 for forming gas mounted in the position aiming the right end or left end near the rear end of a molten pool 6 during welding. Molten metal 6 is widened and the wetting angle theta2 between the metal 6 and base materials 10 is decreased, whereby the boundaries between beads 7 and the materials 10 are made smooth and the need for grinding work is eliminated.

8. 发明专利

JPS5890374A VERTICAL NARROW GROOVE MIG WELDING METHOD 失效
公开(公告)号：JPS5890374A
公开(公告)日：1983-05-30
申请号：JP18774181
申请日：1981-11-25
申请人： MITSUBISHI HEAVY IND LTD
发明人： MATSUMOTO TAKERU , KAMEI HIROMASA , IMADA TAKEHIKO , FUKUNAGA YOSHIAKI , TAKANO GENTA , OGAWA YOSHIICHI
IPC分类号： B23K9/16 , B23K9/038 , B23K9/173
摘要： PURPOSE:To economize resources and to prevent the excessive increase in molten pools by supplying a shielding gas into a groove, oscillating a bended welding wire, and controlling the molten pool so as not to made into one pool by using low pulse currents. CONSTITUTION:A shielding gas is supplied through hollow grooves 4, 8 and a small hole 5 from a pipe for supplying of the shielding gas. On the other hand, a welding wire 9a is bended at a specified width and a specified pitch in the breadthwise direction of the groove by gears 11a, 11b for feeding and bending and forming. The curved wire is supplied through a nozzle 10 for feeding and conduction of electricity into the groove and is simultaneously oscillated in the thickness direction of materials 1, 2 together with the nozzle 10. Molten pools 13 are made shorter than the plate thickness by using a low pulse current method which changes the welding current in the thickness direction of the materials 1, 2 at every several seconds to conduct high current to both end parts of the plates and to conduct low current and high current alternately to the central part according to the plate thickness. Thus, the formation of one pool owing to an excessive increase in the molten pools is prevented and toughness is improved by the mutual refining effect of the weld layers.

9. 发明专利

JPS5677066A AUTOMATIC WELDING EQUIPMENT OF PIPE INSIDE SURFACE 失效
公开(公告)号：JPS5677066A
公开(公告)日：1981-06-25
申请号：JP15387879
申请日：1979-11-28
申请人： MITSUBISHI HEAVY IND LTD
发明人： SHIMOYAMA HIROSHI , IMADA TAKEHIKO , KAWAI KIYOKAZU , YOSHIDA KAZUHIKO , NISHINA NAOYUKI , FUKAYA TOSHIO
IPC分类号： B23K9/00 , B23K9/013 , B23K9/028
摘要： PURPOSE:To make preparatory work simple and easy and improve safety and workability by unitizing a gondola to unify a welding machine. CONSTITUTION:A gondola 3 is inserted into the pipes 1, 1' to be welded, thece a holding piece 10 on the gondola 3 side and a holding piece 11 on the pipe 1 side are connected by means of a wire 12 to suspend the gondola 3. A circumferential ring 9 and the pipes 1, 1' to be welded are set concentrical by means of a centering jig 14. The welding machine is put together with a travelling carriage 16 in the predetermined position and a welding torch 26 is set toward the weld line 2, thence a welding button in pushed. These works are made by the operator from on a central deck 7. If the welding start button is turned ON, the welding machine slews and moves together with the carriage 16 along the rack rail 15 and at the same time, a wire feeder 29 operates to supply a welding wire 28 to the torch 26, thus, the circumferential welding is automatically accomplished.

10. 发明专利

JPH03169497A AUSTENITIC STAINLESS STEEL WELDING MATERIAL HAVING EXCELLENT CREEP RUPTURE DUCTILITY AND BRITTLENESS RESISTANCE 失效
公开(公告)号：JPH03169497A
公开(公告)日：1991-07-23
申请号：JP30667289
申请日：1989-11-28
申请人： NIPPON STEEL CORP , MITSUBISHI HEAVY IND LTD
发明人： NAKAZAWA TAKANORI , FUJITA NOBUHIRO , YANO MITSURU , KOMATSU HAJIME , TASHIMO MASANORI , TAKANABE KIYOSHI , KAWAGUCHI SEIICHI , IMADA TAKEHIKO
IPC分类号： B23K35/30
摘要： PURPOSE:To provide a welding material for high temp. structure by constituting the welding material with the specific wt.% of C, Si, Mn, P, Cr, Ni, Mo, Al, N and the balance of Fe and making the specific vol.% of delta-ferrite quantity. CONSTITUTION:The welding material is constituted of

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