A bench AS318 for TIG welding longitudinal seams of thin-walled tubes.

    AS318 intends for automatic TIG welding with or without filler wire longitudinal joints of thin-walled tubes from low-alloyed and stainless steels by the length up to 400 mm, 42-120 mm and more in diameter with the thickness of the tube wall 0,5...1,5 mm and more.
    AS318 consists of:
  1. Frame;
  2. Mechanism of longitudinal moving of the torch;
  3. "Key row" mechanism of fixation of welding edges (pneumatic drive);
  4. Mechanisms of torch raising with a manual corrector of its position;
  5. Control system;
  6. Set of welding equipment;
  7. Cooling system;
  8. Pneumoapparatus etc.
The outlook of the bench AS318.

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    Technical dates:
Regulating range of welding current, A
Regulating range of welding speed, mm/s
Rated value of the torch path deflection, mm, at most
Mechanisms drive of products edge-fixing and torch raising
Clamps amount at 400 mm tube length, pc
4 x 2
Protective gas
Air pressure, MPa, not less
Cooling of the torch and the pad
Overall dimensions of the bench cell, mm
2000 x 1000 x 1600
    AS303-2 peculiarities:
  1. Programmed control all mechanisms and devices of the machine, as well as diagnostics of their condition, is realized by the Schneider Electric controller.
    Base program ensures: moving the torch in the welding start position, high-frequency starting of the arc, delay of moving the torch for shaping a puddle, moving the torch with necessary speed, crater welding, raising of the torch and returning it on march speed in the source position.
    During the working of the machine controls: the position of the torch, pressure of air in pneumosystem, actuation of pneumatic drives.
  2. It has possibility to preset two and more modes of welding by means of the task board modes for the quick machine readjustment to the welding tubes of different thickness;
  3. Continuous adjustment of welding parameters;
  4. Quick machine readjustment to the welded tubes with different lengths;
  5. This bench is an analogue of welding machines AS304 and AS308 for MIG/MAG welding of sidewalls from low-carbon steels;
  6. There is a performance of this bench benches AS303-2, AS306, and AS321.
  7. It can be completed with cold wire feeder UP4.
  1. One machine in 2006 on the Company UNIMIX in Odessa, Ukraine.