Melting rates when sufficient electrode wire can arc satisfactory operation at a constant speed automatic wire feed without any automatic mechanism to regulate the welding process. The original idea of using such a machine requires minimal maintenance and service, owned by the Institute of Electric them. Paton, the institute developed a series of machines for submerged arc welding currents up to 3000 as well.
Construction machines are simple: three-phase asynchronous motor with a constant speed through the gearbox drives the roller, the feed electrode wire. Wire feed speed change gear shift gears. In the same manner regulated by the rate of displacement along the seam at the self-propelled machines and welding tractors.
Machines are equipped with additional devices: Changes to the electrode wire, rotate, tilt and accurate installation of the machine over the seams, direction, and copiers, adjusting the position of the electrode relative to the seam. Machines at a constant speed all the time the wire is fed in the direction of the product, the ignition of the arc is short-lived start-up electric machine in the opposite direction. After ignition of the arc electric machine is switched to feed the electrode wire to the product and as a result of self-regulation of the arc quickly established normal work machine. At the end of the weld off engine and automatic movement of the arc, the electrode wire feeder, welding current is switched off, and the arc continues to burn up the cliff because of its natural extension. Thus, the end sealed the crater.
Manage gun is usually mounted in a convenient location-button remote control with buttons "Start", "Stop," "Up," "Down", automatic with constant feed rate of the electrode are most common due to the ease and devices. reliability.
Consider for example the universal arc automatic brakes, used in many factories. Machine consists of three sets. Suite A - Welding head hanging, or the actual machine, delivers the electrode wire and arc lights, it includes an asynchronous three-phase drive motor (0.1 Kit, 1450 rev / min), gearbox and drive the right spots, current supply mouthpiece. Mounted on the machine and push-button control panel. Package B includes a lifting mechanism to move the automatic adjustment, flyusoapparat, feeding and suction flux, with flux hopper and reel (drum) for the electrode wire. Kit C - Self-propelled trolley type bike with a single drive motor to move. Machine on its current track of the two channels, lying in one vertical plane, dual controller consists of a three-button remote control and two-button control of movement of the trolley. Machine works fine with a constant feed rate of the trolley. Regulation of feed rate and move the trolley is changing gears. Automatic running wire with a diameter of 2-6 mm at a constant or alternating welding current up to 1500 as well.
Automation can have diverse applications. One set of A is a simple grid automatic welding head. Set AB forms a head, staffed flyusoapparatom and lifting mechanism, which makes setting up the welding machine. Set of ABS - a self-propelled machine with a displacement of it on track. Weight of machine without wire and flux 160 kg. tractors Welding Institute with the design. Paton have a common electric motor drives the rollers at the same time as filing the wire, and the runners self-propelled machinery, tractor transporting. Due to the presence of only one motor, good design and use of light alloys lowered the weight of tractors and their dimensions are significantly reduced. welding tractor TC-17-M, designed for the welding current to 1200 A, - one of the most common arc machines in the industry, it is very versatile, has a variety of applications that expand the possibility to add specific sites. Tractor TS-17 can operate at constant and alternating current, the wire diameter of 1,6-5 mm, weld butt and fillet welds, inclined electrode, and in a position "in the boat" with the welding speed 16 - 126 m / h Automatic works at a constant feed rate, established as the speed of movement, change gears. The tractor has a general motor leading wire feeders and moving the tractor along the seam. Tractor weight [without wire and flux), 42 kg. He can move directly to the product surface and light directing the path of a copier, the moving of cutting the seam, and from the hand. Welding tractor designs TSNIITMASH UT-1250-3 universal, working electrode wire diameter 1,6-6 mm, preferably on an alternating current to 1250 and at the welding speed 10-80 m / h The tractor has two drive motor, allowing smooth and precise control of speed. Automatic runs at a constant feed rate of conduction-loka, which can be adjusted continuously during the machine operation, without interrupting the welding. Tractor weight without flux, and 50 kg of wire. Arc machines are used not only for the submerged arc welding, and welding an open arc in protective gases. Vending machines have many varieties, differing in purpose: to weld in pipes and tanks, longitudinal seam pipes, butt tube, for surfacing works for the welding of special grades of metal, etc. Noteworthy multielectrode, usually two-or three-electrode high-powered machines with current and up to 2000 or more on each arc. These machines allow the use of three-phase arc and develop a very high performance when welding heavy sections of metal in the manufacture of large diameter pipes, etc.
See also:
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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