Question

The pressure of acetylene in welding torch for oxy-acetylene welding is maintained at _________

(a) 0.66-1.0 bar

(b) 0.1-3.5 bar

(c) 0.5-3.5 bar

(d) 1.0-4.5 bar

The question was asked in an international level competition.

This interesting question is from Welding in division Metallurgy of Welding, Brazing and Soldering of Engineering Material & Metallurgy

Answer 1

The correct option is (a) 0.66-1.0 bar

Best explanation: The oxy-acetylene system is employed depending on the manner in which acetylene is supplied for welding. In the high-pressure system, the pressure of acetylene at the welding torch is 0.66-1.0 bar and it is 0.1-3.5 bar for oxygen. The low-pressure system pressure for oxygen should be 0.5-3.0 bar.