External Circular Overlay Automatic Welding Machine

We provide suitable welding solutions and processes such as TIG welding and MIG/MAG welding based on our customers' welding requirements. We will use a dedicated MIG/MAG welding machine for external cylindrical overlay welding as an example to explain the machine's component changeover information.

• Welding torch is fixed while workpiece is rotating, welding position is horizontal.
• Workpiece is clamped and rotary by fixture and supported by universal ball bracket.
• The machine has high voltage and slow wire feeding performance, which guarantees reliable arc igniting. Machine also has low welding voltage and low current for filling crater.
• It adopts push-type wire feeding mode, to guarantee feeding stability.
• Welding torch can moves longitudinally to complete the whole welding.
• PLC controls the whole machine operation. Workpiece rotation speed is adjusted by inverter, stepless adjustment, to improve the reliability.
• The welding mode and welding specification can be preset, saved and recalled. Via touch man-machine interface, it is convenient to modify the parameter and switch the status through the man-machine touch screen.
• Welding torch can be adjusted up and down, left and right and angled turn to meet welding requirement.

Equipment Composition

It consists of Electric deceleration head, fixture,conductive mechanism,welding torch clamping and adjustment mechanism,CNC axial moving mechanism, adjustable movable bracket,electric control system,welding power resource and pneumatic system.

1. Welding torch can be adjusted up and down (pneumatic cylinder), side to side and angled turn. Machine is equipped with 1pc MAG welding torch.

The movement of welding head is driven by servo motor.

 2. Japan OMRON PLC and touch screen are used to control the whole machine. With the help of touch man-machine interface, welding mode and specification can be preset,stored and retrieved. There will be fault alarm and indication during welding process, such as stuck wire, blocked wire, etc.

3. Push-type wire feeder works stably. Machine is with high welding voltage and slow wire feeding performance, which guarantees reliable arc igniting. Machine is also with low welding voltage and low welding current for filling crater.

4. Pipe is fixed by the rotary chuck, and supported by bracket of rolling wheels. Universal ball ensures that it is flexible and convenient to rotate. Distance between supports can be adjusted according to pipe length.

5. Welding Torch Pneumatic Feeding and Oscillating Mechanism

Welding torch moves forward-backward driven by air cylinder, to reach the switch between preparation and welding station. Oscillating mechanism is composed of stepper motor, ball screw and linear rail, etc. It adopts closed type structure, shielding the process from dust and spatters. Torch oscillating frequency, oscillating scope, oscillating time, lifting distance, lifting numbers can be controlled by CNC system.

6.Renderings

External circular overlay welding machine

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