List types of welding flames used in Oxy-acetylene welding. Write their characteristics and applications.

List types of welding flames used in Oxy-acetylene welding. Write their characteristics and applications.
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1 Answer

Answer :

Types of Flames:
Characteristics
Applications.
1)Neutral Flame:
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When oxygen and acetylene are supplied to the torch in nearly equal volumes, a neutral flame is produced. It has two definite zones - A sharp brilliant inner cone, An outer cone or envelop of bluish colour.
Steel, stainless steel, cast iron and aluminium 
2)Oxidizing Flame:
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An oxidizing flame is one in which there is an excess of oxygen. The flame has two zones- the smaller inner cone which has purplish tinge, the outer cone or envelop.
Copper base metal like Brass & bronze, zinc base metal, a few types of ferrous metal such as manganese steel and cast iron.
3)Carburizing Flame or Reducing Flame:
 image
A carburizing flame is one there is an excess of acetylene. The flame has three zones 1) Sharply defined inner cone 2) An intermediate cone of whitish colour. 3) Bluish outer cone
High Carbon Steel, non - ferrous alloys,
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