Bevel Cutting - Bevel cutting is a common operation with the cutting torch and is employed for preparing the edges of steel plates before welding them together.
Beveling may be carried out:
(i) By using a single torch, or
(ii) By using multiple torches operating simultaneously. Beveling may be done manually or by machine if accurate results are to be achieved.
When using single torch for beveling, the amount and type of torch preheat is an important factor.
For angles less than 15° (from the vertical) the loss of preheat efficiency is small; however, as the angle increases above 15°, the loss in heat transfer from the preheat flames to the plate becomes appreciable and considerably greater preheat input is required, particularly when the base plate thicknesses are up to 25 mm.
