Patent
Weld fill height regulating system for arc welding apparatus
Elwood Chaney,John W. Crayton +1 more
Reads0
Chats0
TLDR
In this paper, means for maintaining a uniform height of deposited weld material in an electrical arc welding apparatus of the kind having a welding head driven by a travel motor along a juncture between two workpieces which are to be joined.Abstract:
Means are provided for maintaining a uniform height of deposited weld material in an electrical arc welding apparatus of the kind having a welding head driven by a travel motor along a juncture between two workpieces which are to be joined. A first signal, indicating departure from a desired fill depth, is produced by sensing variation of the welding current from a predetermined normal magnitude. The first signal is applied to summing junction together with a predetermined selectable reference signal of opposite polarity so that the two signals cancel out as long as the desired weld fill height is being maintained. Upon a departure from the desired weld fill height an output signal from the summing junction activates a servomotor which adjusts the speed of the travel motor as necessary to maintain the uniform weld depth. Means are further provided for assuring continuance of the welding head movement in the event that the melt should be lost because of proximity to an edge of the workpiece or because of an opening therein.read more
Citations
More filters
Patent
Method and apparatus for controlling laser welding
Abstract: A method and apparatus is provided for laser welding which utilizes the power reflected by the surface being welded to control the power input to the weld. A beam of laser light is projected on the surface to be welded and the power of the light reflected by the surface is measured by a wattmeter placed in the path of the reflected beam. The output from the wattmeter is used to control the laser power per unit area projected on the weld. In one embodiment the wattmeter output is used to control the speed of the skate motor which moves the surface being welded. In another embodiment, the wattmeter output is used to control the output of the laser.
Patent
External pipe welding apparatus
TL;DR: In this paper, a gas metal arc welding apparatus for welding abutting sections of pipe is described, which has a motorized main carriage for travelling circumferentially about one of the pipe sections to be welded.
Patent
Welding wire feed mechanism
TL;DR: In this paper, the welding wire is fed to the joint location from a passage in a welding wire feeder that is guided for movement relative to the workpieces and the joint locations.
Patent
Method for controlling a bead
Yuji Sugitani,Sato Yoshikazu +1 more
TL;DR: In this paper, a method for controlling a bead, in one-side automatic welding wherein a backing metal strip is adhered to the back side of a pair of work pieces through an inorganic material and arc welding is applied to the work pieces on the surface side thereof, comprises:detecting an electrical signal between the work piece and the back metal strip to control a weld current so that the detected electrical signal can be equal to a predetermined reference signal; and detecting the controlled weld electrical current and putting the detected welding electrical current into a formula of V1 =V0 ·IL
Patent
Weld bead shape control
TL;DR: In this article, techniques and electrode compositions for arc welding consumables such as electrodes that reduce the energy otherwise required for the welding are discussed. But they do not consider the potential for welding contamination by agents from the atmosphere or shielding gas.
References
More filters
Patent
Welding control arrangement
TL;DR: An apparatus for controlling the application of weld metal in electric calarc welding includes a mechanical scanning device upstream from the welding torch as mentioned in this paper, which penetrates into the welding groove and measures at least one physical dimension thereof which is converted into signals for controlling welding material feed.