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1. 发明专利

JPS5478343A DC ARC WELDER 失效
公开(公告)号：JPS5478343A
公开(公告)日：1979-06-22
申请号：JP14563577
申请日：1977-12-06
申请人： NIPPON KOKAN KK
发明人： NUKAGA MASAYOSHI , HIRANO OSAMU , TAKAHASHI KEIJI , MATSUO TOSHINORI
IPC分类号： B23K9/08 , B23K9/06
摘要： PURPOSE:The titled welder free from the magnetic blow-out constituted by installing the seam guide roller at the position nearer to the tip of the boom than the welding torch, and by arranging the power supply cable from the truck side so as to make changeable the polarity of the current. CONSTITUTION:The polarity changer is switched to the reverse polarity, and the boom 4 is located on the welding seam 2 of the welded material 1, and then, the welding is worked according to the push welding method by the driving truck 3. The seam guide roller 6 is located further ahead of the welding torch 5 in the direction of welding, therefore, the followability of the welding seam 2 is made good. Besides, the welding seam 2 is located between two transfer poles 7, so that the stability of travel is also good. Since the power supply cable is located at the back of the torch 5, the magnetic blow-out due to the magnetic field generated in the unwelded zone is prevented, and the stable welding can be worked. After finishing the welding work, the polarity is changed to normal by the polarity changer, and the arc is struck for about 3-5 seconds; hereby, the residual magnetism is removed from the welded material 1, and the magnetic blow-out does not occur in the case of welding of the sealing groove.

2. 发明专利

JPS51110940A 失效
公开(公告)号：JPS51110940A
公开(公告)日：1976-09-30
申请号：JP3534675
申请日：1975-03-26
申请人： NIPPON KOKAN KK
发明人： NIOIZAKA YASUO , NUKAGA MASAYOSHI , SUZUKI MAGOJI , TSUKIHASHI MASAHIKO , KOBAYASHI SHIGEO
IPC分类号： B66C13/00 , G06F19/00

3. 发明专利

JPS52133653A AUTOMATIC SLINGING DEVICE 失效
公开(公告)号：JPS52133653A
公开(公告)日：1977-11-09
申请号：JP4849876
申请日：1976-04-30
申请人： NIPPON KOKAN KK
发明人： NUKAGA MASAYOSHI , TAKAHASHI KEISHI , SUMITA YOSHIKAZU , YAZAWA KOUJI , SEN SABUROU
IPC分类号： B66C1/28 , B66C1/10
摘要： PURPOSE:To provide an automatic slinging device which can rapidly sling automatically in response to the size change by utilizing ready set crane for suspending various products of length such as pipe or the like.

4. 发明专利

JPS51110236A 失效
公开(公告)号：JPS51110236A
公开(公告)日：1976-09-29
申请号：JP3446275
申请日：1975-03-24
申请人： NIPPON KOKAN KK
发明人： NIOIZAKA YASUO , NUKAGA MASAYOSHI , SUZUKI MAGOJI , TSUKIHASHI MASAHIKO , KOBAYASHI SHIGEO
IPC分类号： B66C13/00 , G06F19/00

5. 发明专利

JPS5451087A APPARATUS FOR REMOVING TAB FROM WELDED STEEL PIPE 失效
公开(公告)号：JPS5451087A
公开(公告)日：1979-04-21
申请号：JP11718677
申请日：1977-09-29
申请人： NIPPON KOKAN KK
发明人： NUKAGA MASAYOSHI , TAKAHASHI KEIJI , NISHINO YUKIO , YAZAWA KOUJI , SEN SABUROU
IPC分类号： B26F3/00
摘要： PURPOSE:To mechanically remove an inner bead, an axialy extending tab or the like which will be resulted by a stage wherein outer and inner surfaces of a welded steel pipe are subjected to welding. CONSTITUTION:A column 2 is mounted on a table 1 such that the column 2 is movable in a horizontal direction and in a vertical direction and to a front portion of the column is installed a horizontally movable spindle 3 which is driven to rotate. the spindle 3 is provided with a tap blow apparatus 6 and an inner surface grinding device 4 and a grooving device 5 both of which are coaxial with the spindle 3. The apparatus 6 is vertically driven below the spindle 3. By moving the column 2, and moving vertically and rotaing the spindle 3, a tab of a welded tube is notched, a blow is given to the tab to break it and thereafter an inner bead in the tube is removed over a desired length by automatic grinding.

6. 发明专利

JPS5347888A METHOD OF PREDICTING FATIGUE LIFE OF MACHINE STRUCTURE 失效
公开(公告)号：JPS5347888A
公开(公告)日：1978-04-28
申请号：JP12183776
申请日：1976-10-13
申请人： NIPPON KOKAN KK
发明人： FUJITA YOUSUKE , NUKAGA MASAYOSHI , MATSUO TOSHINORI
IPC分类号： G01N3/32 , G01M99/00

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