Automatic ADS
In this machine a continuous wire feed speed changes smoothly depending on the arc voltage. Auto is usually used for submerged arc welding arc AC. Power produced by arc welding transformer vehicle through throttle control PC (Fig. 82), the drive motor machine AT DC from the auxiliary control unit, consisting of three-phase AC motor directly connected to DA with DC generators SG and SC. The generator feeds the electric machine YY DW, and the generator GC - DC motor carriage, which serves to move the arc along the seam. For the DC field windings of generators and DC motors are two static full-wave rectifier and the Navy VNV. DB and DC motors have a separate excitation, and their winding powered by an AC current through the step-down transformer and rectifier VNV TPR. DW is powered motor armature current from the auxiliary generator machine HS. Independent windings of the generator SG included differents ialno towards each other and create the resulting magnetomotive force equal to the difference between the magnetomotive forces of the two windings. The winding is fed from the rectifier GG1 VNV through potentiometer REED constant voltage, current in the coil and its magnetomotive force Aw1 constant and not dependent on the state of the welding circuit. The second winding n2 of excitation is supplied from the arc voltage through a rectifier Navy. The current in the coil and its magnetomotive force is proportional to the voltage Aw2 arc. resultant magnetomotive force equal to the generator windings Aw Aw = Aw1 - A w2, and this difference can be either greater or less than zero hook, ie, the generator can be remagnetized and the electromotive force can change not only the magnitude but also the sign. In this scheme, the engine speed automatic AT is proportional to the voltage control oscillator, and its direction of rotation varies with the polarity of the terminals of the generator. In the normal arc voltage generator SG develops the voltage producing the wire feed motor domain wall at a rate equal to the rate of melting, with an increase or a decrease in arc voltage, respectively, increasing or decreasing wire feed speed. With a significant decrease in arc voltage, such as short circuit, there is a reversal of the motor domain wall and remove the end of the electrode wire from the device, so that the arc ignition is automatic. In two separate excitation winding, the generator control GH is still a third, self winding seriesnuyu DGR. The third winding creates AW 3 in magnitude proportional to the current generator, and coinciding with the direction of the resultant Aw windings with separate excitation. The presence of third seriesnoy winding DGR improves the dynamic properties of the machine, accelerating changes in the wire feed speed with changes in the length of the arc. generator feeds the electric displacement SC DC arc, operating at a constant rate, adjustable potentiometer RAC, the direction of travel is changed by switching the direction of current feeding the motor armature DC . Typically, automatic DSA-1000-2 operates as a welding tractor with two electric motors (Figure). DG The motor delivers wire, DC motor and self-propelled carriage moves the tractor. Automatic DSA-1000-2 is designed for submerged arc welding currents up to 1200 and the wire diameter of 3-6 mm. Tractor without a flux core wire and weighs about 60 kg.
Automatic Arc Welding
Automatic ADS
Machines with a Constant Feed Rate of Electrode
Flux Equipment
Settings for Automatic Arc Welding
Automatic Submerged Arc Welding Introduction
Fluxes for Automatic Arc Welding
Processed Fluxes
Ceramic Fused Fluxes
Semi-Automatic Arc Welding
Arc Welding with Flux Cored Wire
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