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41. 发明授权

US2216329A Circuit controller 失效
公开(公告)号：US2216329A
公开(公告)日：1940-10-01
申请号：US20549238
申请日：1938-05-02
申请人： CUTLER HAMMER INC
发明人： CARROLL STANSBURY
IPC分类号： B23K11/25
CPC分类号： B23K11/251

42. 发明授权

US2112716A Circuit control device 失效
公开(公告)号：US2112716A
公开(公告)日：1938-03-29
申请号：US4303035
申请日：1935-10-01
申请人： ELECTRIC CONTROLLER & MFG CO
发明人： SMITH WARD L
IPC分类号： B23K11/25
CPC分类号： B23K11/251 , Y10T307/826 , Y10T307/977

43. 发明授权

US1776587A Welding machine and method 失效
标题翻译：焊机及方法
公开(公告)号：US1776587A
公开(公告)日：1930-09-23
申请号：US73680824
申请日：1924-09-10
申请人： METROPOLITAN ENG CO
发明人： HOLMES HENRY S , HOFFER LE ROY H
IPC分类号： B23K11/25
CPC分类号： B23K11/251

44. 发明授权

US08455784B2 Method and system for welding workpieces 有权
标题翻译：焊接工件的方法和系统
公开(公告)号：US08455784B2
公开(公告)日：2013-06-04
申请号：US12116381
申请日：2008-05-07
申请人： Pei-Chung Wang , John D. Fickes , Xiaohong Q. Gayden , Wuhua Yang
发明人： Pei-Chung Wang , John D. Fickes , Xiaohong Q. Gayden , Wuhua Yang
IPC分类号： B23K11/24
CPC分类号： B23K11/252 , B23K11/251 , B23K31/125
摘要： A method of welding two or more workpieces employing a motion-controlled electrode that reduces temperature and residual stresses at a workpiece-to-electrode interface is disclosed. During a first period of time, a first electrode force is applied to the workpieces to be welded, and a weld current is applied that causes heating of an associated workpiece-to-workpiece faying surface, the first electrode force being applied at a first electrode stroke. A temperature of the faying surface indicative of a weld nugget formation thereat is determined, and in response thereto the electrode force is reduced to a second level during a second period of time while maintaining a constant electrode stroke. During a third period of time, the electrode force is further reduced to a third level while simultaneously reducing the electrode stroke to a second level. Welding is stopped after the third period of time, resulting in a weld joint having reduced residual stresses and reduced likelihood of stress crack formation.
摘要翻译：公开了一种焊接两个或更多个工件的方法，该工件采用运动控制的电极来降低工件对电极界面的温度和残余应力。在第一时间段期间，第一电极力被施加到待焊接的工件上，并且施加焊接电流，其引起相关联的工件对工件接合表面的加热，第一电极力施加在第一电极行程。确定表示焊接熔核形成的接合表面的温度，并且响应于此，电极力在第二时间段期间降低到第二水平，同时保持恒定的电极行程。在第三时间段期间，电极力进一步降低到第三水平，同时将电极行程降低到第二水平。焊接在第三个时间段之后停止，导致焊接接头具有减小的残余应力并减少应力裂纹形成的可能性。

45. 发明授权

US4132880A Seam welding method and apparatus 失效
标题翻译：接缝焊接方法及装置
公开(公告)号：US4132880A
公开(公告)日：1979-01-02
申请号：US697040
申请日：1976-07-17
申请人： Robert H. Blair
发明人： Robert H. Blair
IPC分类号： B23K11/06 , B23K11/087 , B23K11/25
CPC分类号： B23K11/251 , B23K11/06 , B23K11/087
摘要： A high speed seam welding system wherein single phase alternating current welding pulses are applied to electrode mechanism during only a less than maximum amplitude fractional portion of the wave form representing each successive current half cycle, and the current is substantially cut off between current applications to permit cooling. The relative seam welding movement of the electrode mechanism and the material to be seam welded is coordinated with the duration of the welding and cooling periods to more rapidly form a line of uniform weld nuggets. The system may also be operated at more conventional welding speeds to weld relatively heavy gauge materials.
摘要翻译：一种高速缝焊系统，其中单相交流焊接脉冲仅在表示每个连续的当前半周期的波形的小于最大振幅小数部分内施加到电极机构，并且电流在当前应用之间基本上被切断以允许冷却。电极机构和待焊接的材料的相对缝焊运动在焊接和冷却时段的持续时间内协调，以更快速地形成一排均匀的焊接块。该系统还可以以更常规的焊接速度操作以焊接相对较重的规格材料。

46. 发明授权

US3569659A Resistance welding 失效
公开(公告)号：US3569659A
公开(公告)日：1971-03-09
申请号：US3569659D
申请日：1969-04-07
申请人： DAVID B BENTON , RICHARD G NEWLING , MALCOLM D HANNAH
发明人： BENTON DAVID B , NEWLING RICHARD G , HANNAH MALCOLM D
IPC分类号： B23K11/00 , B23K11/25 , B23K9/10
CPC分类号： B23K11/251 , B23K11/002
摘要： The progress of a resistance welding process is ascertained by reference to the expansion of the workpieces and to avoid the difficulty of accurately detecting the maximum expansion, in the region of which the expansion/time curve is flattened, a sensing device indicates when the expansion has a selected value between 60 percent and 90 percent of the maximum expansion which would result if the current were allowed to continue. The welding current is switched off at this time or a predetermined interval thereafter. Methods of increasing the size of the weld nugget are described, including reinitiating the flow of welding current after the workpieces have contracted to some extent, this further pulse of current being again terminated when the expansion reaches a selected value before the flattened portion of the expansion/time curve.

47. 发明授权

US3564193A Direct current welding system having minimum inductance 失效
标题翻译：具有最小电感的直流电流焊接系统
公开(公告)号：US3564193A
公开(公告)日：1971-02-16
申请号：US3564193D
申请日：1968-03-28
申请人： CONTINENTAL CAN CO
发明人： ERLANDSON PAUL M
IPC分类号： B23K11/087 , B23K11/25 , B23K11/26
CPC分类号： B23K11/251 , B23K11/0876
摘要： An electrical resistance direct current welding system is disclosed including circuitry providing low inductance and having switching means connected adjacent the welding electrodes whereby the current flow to the electrodes may be interrupted with no damaging arc resulting.

48. 发明授权

US3443056A Method and apparatus for non-destructive testing of resistance welds 失效
标题翻译：耐腐蚀性非破坏性试验方法与装置
公开(公告)号：US3443056A
公开(公告)日：1969-05-06
申请号：US3443056D
申请日：1964-06-29
申请人： MARTIN MARIETTA CORP
发明人： RAMALEY EDWARD J , WILCOX NORMAN G
IPC分类号： B23K11/25 , G01B5/00 , B23K11/24 , B23K37/04
CPC分类号： B23K11/251 , G01B5/0037

49. 发明授权

US3321667A Control systems for electric welders 失效
标题翻译：电焊机控制系统
公开(公告)号：US3321667A
公开(公告)日：1967-05-23
申请号：US19977162
申请日：1962-06-04
申请人： SPERRY RAND CORP
发明人： HOYT JR HAROLD C
IPC分类号： B23K11/25
CPC分类号： B23K11/251

50. 发明授权

US2773221A Timing circuit 失效
公开(公告)号：US2773221A
公开(公告)日：1956-12-04
申请号：US30398652
申请日：1952-08-12
申请人： COLUMBIA BROADCASTING SYST INC
发明人： SHAW LLOYD E
IPC分类号： B23K11/25
CPC分类号： B23K11/251

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