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1. 发明专利

JPS60162582A AUTOMATIC WELDING DEVICE 失效
公开(公告)号：JPS60162582A
公开(公告)日：1985-08-24
申请号：JP1572784
申请日：1984-01-31
申请人： HITACHI SHIPBUILDING ENG CO , SOUKI KOGYO KK
发明人： FURUTA SHIYOUGO , NOHARA SHIGEO , TANI JIYUNICHI , SUGITA MASARU , OONO HACHIROU , OONO YOSHIKIMI , KURETAKE TAKAO
IPC分类号： B23K9/12 , B23K9/00
摘要： PURPOSE:To execute simultaneously fillet welding to respective both surfaces of two plate bodies by providing a pair of welding torches to respectively a pair of heads of the 1st and 2nd welding machines. CONSTITUTION:The 1st and 2nd welding machines 10, 12 are inserted into a cylindrical vessel 1 to be welded and are adapted to fillet welding, etc. to many toric or arc-shaped plate bodies 2, 3, 4. The 1st welding machine 10 has a horizontal sliding unit. A pair of torches 13, 14 for CO2 arc welding are provided freely perpendicularly slidably and freely adjustably in angle to a pair of heads mounted freely horizontally slidably to said unit. A pair of heads are freely horizontally slidably provided similarly to the 2nd machine 12 and a pair of torches 15, 16 for CO2 arc welding are provided freely perpendicularly slidably and freely adjustably in angle ot a pair of said heads.

2. 发明专利

JPS57168783A NARROW GROOVE MIG WELDING METHOD 失效
公开(公告)号：JPS57168783A
公开(公告)日：1982-10-18
申请号：JP5473981
申请日：1981-04-10
申请人： HITACHI SHIPBUILDING ENG CO
发明人： MINEHISA SETSUJI , NAGAI AKIRA , OOTSUKA TAKAO , YAGI TAKAHARU , OONO YOSHIKIMI
IPC分类号： B23K9/00 , B23K9/16 , B23K9/173
摘要： PURPOSE:To perform full layer welding with one torch at a small amt. of a shielding gas by moving copper plates for protection against the shielding gas of approximately the same spacing as the narrow groove of two pieces of the works whle bringing their flexible skirts in abutment on the works. CONSTITUTION:The end faces of two pieces of the works 23, 23 are faced to each other to form a narrow groove 24. On the other hand, two sheets of copper plates 26, 26, for protection against a shielding gas are supported to a support plate 25 mounted to a third beam traveling carriage. At this time, the spacing of the opposite surfaces of both copper plates 26, 26 is set approximately the same as the spacing of the groove 24, and the opposite surfaces of the plates 26, 26 are located on approximately the same plane as that of the end face of the groove 24. Flexible and heat resistant skirts 27, 27 are mounted in the bottom end parts of the plates 26, 26 and are brought into abutment on the top surface of the works 23, whereby the shielding effect during welding is assisted. The works 23, 23 are held fixed, and a welding torch body 28 is moved, whereby the works 23, 23 are welded at a low consumption rate of the shielding gas.

3. 发明专利

JPS5823577A MIG WELDING METHOD FOR NARROW GROOVE 失效
公开(公告)号：JPS5823577A
公开(公告)日：1983-02-12
申请号：JP12277781
申请日：1981-08-05
申请人： HITACHI SHIPBUILDING ENG CO
发明人： NAGAI AKIRA , OOTSUKA TAKAO , OONO YOSHIKIMI
IPC分类号： B23K9/028 , B23K9/173
摘要： PURPOSE:To prevent the welding defect of an arc start part to improve the quality, by arranging a shield gas protecting box on a narrow groove, which is formed by allowing cylindrical weldments to face to each other on rollers, and rotating rollers to start the arc. CONSTITUTION:Cylindrical weldments 3 and 3 are put on plural rollers 1 attached freely rotatably to bases 2 so that end faces of these weldments 3 and 3 face to each other. A shield gas protecting box 5 consisting of two side plates 7, which are arranged at an interval approximately equal to the width of a formed narrow groove 4, and plural crossbeams 8 are arranged and are supported by a supporting plate 6. Skirts attached to lower ends in both sides of the box 5 are brought into contact with outside circumferences of weldments 3 and 3. After rollers 1 are rotated to rotate weldments 3 and 3, the arc is started.

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