Question

For welding mild steel plate, neutral flame is used (oxidizing flame the total amount of acetylene consumed was 8.0 litres, the oxygen consumption from the cylinder is

• A. 20 litres
• B. 16 litres
• C. 8 litres
• D. 24 litres

Answer 1

The correct option is C 8 litres

For welding mild steel plates, neutral flame is used (oxidizing flame can cause oxidation on low carbon steel). In this case the neutral flame ratio of acetylene and oxygen is approx 1 : 1. Hence for 8 litres of consumption of acetylene, oxygen consumption will be 8 litres.