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1. 发明专利

JPS53137051A FLASH WELDING METHOD 失效
公开(公告)号：JPS53137051A
公开(公告)日：1978-11-30
申请号：JP5141877
申请日：1977-05-04
申请人： NIPPON STEEL CORP , NIPPON KINZOKU CO LTD
发明人： KADO SATOSHI , SAKABA YASUROU , YAMAZAKI TSUNETOMO , YAMANAKA MIKIO , SAITOU TOORU , KANEKO FUJIO , ISHINO YOSHIKAZU
IPC分类号： B23K11/24 , B23K11/04
摘要： PURPOSE:To form the weld zone, having a superior intensity, by generating at least more than 1.2 of flash per 1mm of sheet in 40 milli-second immediately before upset, at the time of carrying out flash welding of steel sheet.

2. 发明专利

JPS51139543A METHOD OF FLUSH BUTT WELDING 失效
公开(公告)号：JPS51139543A
公开(公告)日：1976-12-01
申请号：JP6363175
申请日：1975-05-28
申请人： NIPPON STEEL CORP , NIPPON KINZOKU CO LTD
发明人： MURAMOTO TETSUGOROU , MIYAZAKI TATSUO , YAMANAKA MIKIO , SAITOU TOORU , SAJIKI YASUNORI
IPC分类号： B23K11/24 , B23K11/04

3. 发明专利

JPS5489956A INTERRUPTING METHOD FOR UPSET POWER SUPPLY IN FLASH WELDING 失效
公开(公告)号：JPS5489956A
公开(公告)日：1979-07-17
申请号：JP15971177
申请日：1977-12-27
申请人： NIPPON STEEL CORP , NIPPON KINZOKU CO LTD
发明人： YAMAZAKI TSUNETOMO , SAKABA YASUROU , YAMANAKA MIKIO , SAITOU TOORU , ISHINO YOSHIKAZU
IPC分类号： B23K11/24 , B23K11/04 , G05F1/02 , H01F7/18 , H01F27/34 , H02M5/10
摘要： PURPOSE:To make preventable the generation of rush current without causing the deterioration of the weld quality, by making shorter the power supply time on the primary side of the transformer at the last half cycle of the upset power supply, than the power supply time at the just before half cycle. CONSTITUTION:The primary voltage supplied to the welding transformer just being nearby the finishing point of welding is supplied as follows; at the point P of the voltage waveform diagram, the thyristor for power supply to the last half cycle is not ignited; and at the point Q behind the point of the maximum voltage, the thyristor is ignited; and then, the power supply is stopped at the point R. Hereby, when the magnetization of the iron core of the transformer is in such condition as I or G, the power supply to the primary side of the transformer is stopped, and the welding is finished. As a result, the residual magnetization of the iron core becomes such small value as shown by the point H which is zero or nearly zero, so that the rush current at starting point of the next welding can be substantially prevented.

4. 发明专利

JPS53140248A METHOD AND APPARATUS FOR FLASH WELDING 失效
公开(公告)号：JPS53140248A
公开(公告)日：1978-12-07
申请号：JP5579577
申请日：1977-05-13
申请人： NIPPON STEEL CORP , NIPPON KINZOKU CO LTD
发明人： KADO SATOSHI , SAKABA YASUROU , YAMAZAKI TSUNETOMO , YAMANAKA MIKIO , SAITOU TOORU , KANEKO FUJIO , ISHINO YOSHIKAZU
IPC分类号： B23K11/24 , B23K11/04
摘要： PURPOSE:To improve the strength and shape of weld zone and to stabilize the quality of welding, by detecting stepping in the upset stage by electromagnetic signal and stopping the electric current supply to the material to be welded after a fixed time, at the time of carrying out flash welding of sheet etc.

5. 发明专利

JPS5495949A STARTING AND INTERRUPTING METHOD FOR POWER SUPPLY TO FLASH WELDING 失效
公开(公告)号：JPS5495949A
公开(公告)日：1979-07-28
申请号：JP218178
申请日：1978-01-12
申请人： NIPPON STEEL CORP , NIPPON KINZOKU CO LTD
发明人： YAMAZAKI TSUNETOMO , YAMANAKA MIKIO , SAITOU TOORU , KANEKO FUJIO , ISHINO YOSHIKAZU
IPC分类号： B23K11/24 , B23K11/04
摘要： PURPOSE:To perfectly prevent the generation of rush current,by supplying the power with the quarter-cycle delayed starting point of power supply to the first half-cycle, and further, by adding the phase control to the interruption of upset power supply. CONSTITUTION:The ignition of the thyristor inserted into the primary side of the transformer is a quarter-cycle delayed in the first half-cycle after starting the power supply, and then, the power supply is started. The point B. The waveform deforms depending on the magnetization characteristic of the iron core, and the current somewhat larger than the steady exciting current first flows correspondingly to the direction of the residual magnetization due to the former welding, however, this current does not become such large current as so called rush current. Further, in the case of interruption of the upset power supply when the flash welding is ending, the time of power supply for the last half-cycle is shorten by previously set time from the time of power supply for the half-cycle just before the last half-cycle; hereby, the nearly steady condition is established since the first making current, and the generation of rush current is prevented.

6. 发明专利

JPS5467537A UPSET CURRENT ENERGIZING IN FLUSH WELDING 失效
公开(公告)号：JPS5467537A
公开(公告)日：1979-05-31
申请号：JP13500777
申请日：1977-11-10
申请人： NIPPON STEEL CORP , NIPPON KINZOKU CO LTD
发明人： YAMAZAKI TSUNETOMO , YAMANAKA MIKIO , SAITOU TOORU , ISHINO YOSHIKAZU , IZUMI MASAKI , SHIMIZU YOSHIHITO , SUZUKI TAKU
IPC分类号： B23K11/24 , B23K11/04
摘要： PURPOSE:To prevent die-burn and provide a proper upset heat-input in flush-welding of steel sheet or like, an upset-current-energizing is applied using a signal or a plurality of current pulse such that a current is intermitted in a given period of time. CONSTITUTION:In flush welding of steel sheet in thickness 1.2 mm or less, or construction thereof, a welding is performed by upset current energizing using a single or a plurality of current pulse which is deenergized within 5.9 millisecond. Illustratively, in 50 Hz commercial power source, ignitrons or thyristors 5, 5' inserted in a primary of a welding transformer 4 are forcedly extinguished during upsetting period in the middle of A.C. half wave. As a result, current energizing period of time is restricted to half of each half-wave, and a shadowed current as illustrated is caused to flow, resulting in no die burn and the best possible heat input.

7. 发明专利

JPS6068253A EASY-OPEN END MADE OF STEEL THROUGH ULTRASONIC WELDING 失效
公开(公告)号：JPS6068253A
公开(公告)日：1985-04-18
申请号：JP17620083
申请日：1983-09-26
申请人： NIPPON STEEL CORP
发明人： ICHIKAWA MASASHI , TAKAHASHI YASUO , SAITOU TOORU
IPC分类号： B21D51/44 , B23K20/10 , B65D17/34 , B65D17/347 , B65D17/353

8. 发明专利

JPS53130241A WELDING METHOD FOR MANUFACTURE OF THICK WALLED STEEL PIPE 失效
公开(公告)号：JPS53130241A
公开(公告)日：1978-11-14
申请号：JP4553577
申请日：1977-04-20
申请人： NIPPON STEEL CORP
发明人： FUJIMORI SHIGEO , OOTANI KOUSABUROU , HASE TAIJI , SAITOU TOORU , IWAMI HIROSHI , SANAO YASUNORI
IPC分类号： B23K9/025 , B23K9/022 , B23K31/00
摘要： PURPOSE:To improve the low-temperature toughness of the weld zone in the thick walled steel pipe, by finishing the surface layer of the weld zone according to the submerged arc welding, after carrying out the MIG welding on the groove face, prepared into a specified shape, by supplying a large welding current to the thin wire and by giving a vibration to this thin wire.

9. 发明专利

JPS5245556A OVERHEAD POSITION ONE SIDE WELDING PROCESS 失效
公开(公告)号：JPS5245556A
公开(公告)日：1977-04-11
申请号：JP12167575
申请日：1975-10-08
申请人： NIPPON STEEL CORP
发明人： ITOU TEIJI , YABUKI YUTAKA , SAITOU TOORU , IWAMI HIROSHI
IPC分类号： B23K9/02

10. 发明专利

JPS59147782A Flash butt welding method 失效
标题翻译：闪光焊接方法
公开(公告)号：JPS59147782A
公开(公告)日：1984-08-24
申请号：JP1964283
申请日：1983-02-10
申请人： Nippon Steel Corp
发明人： ICHIKAWA MASASHI , SAITOU TOORU , NISHI TAKESHI
IPC分类号： B23K11/04 , B23K11/24
CPC分类号： B23K11/04
摘要： PURPOSE: To obtain a weld zone of high quality small in deterioration of toughness of the weld zone by maintaining high current density at the time of upsetting and performing upsetting while melting the whole end faces to be joined.
CONSTITUTION: A steel material in which temperature near the end face to be joined is T
0 °C is flashed and upset to form a joint. When final flashing speed is V(mm/sec), current density I(A/mm
2 ) at the time of upsetting is made greater than the value solution shown in the equation, and the platen is displaced at an average speed higher than 50mm/sec while melting the end face of the member to to joined. Final upsetting at the time of cutting off of upset current is performed at low pressing force of ≤5kg/mm
2 while discharging only the molten metal in which forming is in progress.
COPYRIGHT: (C)1984,JPO&Japio
摘要翻译：目的：通过在镦锻时保持高电流密度，同时熔化整个待接合端面进行镦锻，获得焊接区韧性劣化小的焊接区域。构成：在接合端面附近的温度为T0℃的钢材闪光并镦粗以形成接头。当最终闪烁速度为V（mm./sec）时，镦粗时的电流密度I（A / mm。<2>）大于等式所示的值解，并且压板平均位移速度高于50mm./sec，同时熔化构件的端面以连接。在切断镦粗电流时的最终镦锻在<= 5kg / mm 2 <2>的低压力下进行，同时只释放正在进行成型的熔融金属。

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