Index >> Gas Welding Processes and Equipments >> Gas Welding Techniques

Work piece edges may be prepared by
(i) Gas cutting.
(ii) Plasma cutting.
(iii) Milling.
(iv) Shaping.
(v) Planing, etc.

In joint preparation, it should be ensured that plate edges are free from rust or oil. This prevents excessive fumes and helps improve the appearance of finished weld. A strong wire brush is used to dispose of rust and small burrs.
Even on thin gauge sheets, it is better to tack weld the parts or to hold them in a fixture to ensure maintenance of the correct gap. The parts to be welded may be preset to counteract distortion.