摘要:
The present invention is directed to a method and apparatus of controlling the output of a welding power source with a fused electrode detection circuit. The present invention incorporates a fused electrode detection circuit to regulate the output of the welding system power source. By providing feedback as to when the electrode begins to stick in the weld, the output of the power source may be regulated to allow easy diffusing of the electrode. That is, by reducing the output of the power source upon detection of a fused electrode condition, a user or technician can remove or unstick the electrode from the weld without having to shut down the power source or without forcefully removing it while power is on and creating large, damaging arcs. By limiting the output of the power source until the electrode is nullunstucknull, the present invention reduces the likelihood of damaged electrodes, electrode holders, and welds. The invention provides easy diffusing of the electrode and allows quick return to welding.
摘要:
A method of gas shielded arc welding steel rails spaced from each other to define a longitudinal gap therebetween comprises the steps of providing an elongated steel barrier plate across the gap at the bottom of the spaced rails, and filling the gap above the barrier plate with a molten steel from an advancing filler metal electrode by a gas shielded electric arc welding process. The barrier plate has a central portion received in the gap and longitudinally extending recesses laterally outwardly adjacent to the central portion and which underlie the bottoms of the rails at the bottom of the gap.
摘要:
A method of gas shielded arc welding steel railroad rails spaced from each other to define a longitudinal gap comprises the steps of providing an elongated steel barrier plate across the gap at the bottom of the spaced rails, and filling gap above the barrier plate with a molten steel from an advancing filler metal electrode by a gas shielded electric arc welding process. The barrier plate has a central portion received in the gap and longitudinally extending recesses laterally outwardly adjacent to the central portion and which underlie the bottoms of the rails at the bottom of the gap.
摘要:
A power apparatus is used in an arc welding device to control a weld operation during a welding start time. An improved arc start performance is obtained in both a cooled condition of the welding wire tip end portion and a red heated condition thereof. A feed quantity of the consumption electrode during the weld start time is changed depending on whether the welding wire tip end portion is cooled or red heated from a prior arc welding operation.
摘要:
A welding expectation path is taught beforehand, and an operation for striking an electric arc is executed at a point on the path. If the electric arc does not appear, the operation for striking the electric arc is executed at a different point on the path. When the electric arc has appeared, a welding torch is once returned to a welding start expectation point while the electric arc is held, and it performs welding from the welding start expectation point toward a welding end expectation point.
摘要:
A control circuit for an electric arc welder is responsive to the operation of a torch or gun mounted control switch. A first comparator has one input connected to the gun switch and the other input to a reference voltage source. When the gun switch is closed, the output of the comparator will cause a control relay to be energized. When a welding arc is established, a reed switch closes and provides an input to a second comparator which effectively provides a latch to hold the control relay energized. After a predetermined time delay, typically in the order of 1 second, a timer circuit will provide an output to one input of a third comparator, the other input of which is connected to the gun switch. A subsequent closure of the gun switch will caused the output of the third comparator to change the level of the reference voltage, changing the outputs of the first two comparators, thereby removing the latch and deenergizing the control relay. Thus, the control relay can be deenergized either by the welder operating the control switch a second time or by extinguishing the arc, such as by removing the torch from the workpiece; either will disable the latch circuit and terminate the welding operation.
摘要:
A method performed in a welding or cutting system configured to deliver weld power to an electrode tip extending from a torch to create an arc on a workpiece, comprises: sampling a sensed voltage indicative of a weld voltage provided to the electrode tip, to produce voltage values; computing a time derivative of the voltage values to produce voltage derivative values that represent a contact resistance between the electrode tip and the workpiece; and upon detecting a decrease in the voltage derivative values from above a time-derivative threshold to below the time-derivative threshold as an indication of a weld start event, increasing the weld power supplied to the electrode tip to initiate the arc on the workpiece.
摘要:
An arc start adjustment device adjusting an arc start procedure in a welding process comprises an obtainment unit that obtains welding data indicating a welding state during or after a welding process, and a procedure adjustment unit that adjusts the arc start procedure such that the cycle time of the welding process is shortened based on welding data obtained by the obtainment unit.
摘要:
Disclosed example robotic welding systems include: a robotic manipulator configured to manipulate a welding torch; and a robot control system, comprising: a processor; and a machine readable storage medium comprising machine readable instructions which, when executed by the processor, cause the processor to, during a robotic welding procedure involving the robotic manipulator: prior to initiating an arc as part of the robotic welding procedure, identify an arc warning event; in response to the arc warning event, output at least one of a visual notification or an audible notification proximate to the robotic manipulator; and control the robotic manipulator to perform the robotic welding procedure involving initiating the arc using the welding torch.