Oxyacetylene Welding (100% Error-free)

When a gas storage cylinder is cooled, what happens to the gas and pressure? correct answers Gas contracts and pressure decreases The greatest concern of mixing oil or grease with oxygen under pressure is what? correct answers It can cause an explosion On the oxyacetylene welding assembly, what colors are the oxygen and acetylene hoses? correct answers Oxygen is green or black and acetylene is red or maroon What does the tip of an oxyacetylene torch do? correct answers Directs gas flow When assembling oxyacetylene welding equipment, open the acetylene cylinder valve a maximum of how many turns? correct answers One and one-half turns How are oxygen and acetylene connections made on oxyacetylene welding equipment? correct answers Acetylene uses left-handed threads and oxygen uses right-handed threads When disassembling oxyacetylene welding equipment, which tool should you use to keep from rounding corners on connecting nuts? correct answers Torch wrench You test welding equipment connectors for gas leaks with what substance? correct answers Soapy water To repair a leak around the needle valves of welding equipment, tighten what? correct answers The packing gland nut When cleaning a welding or cutting torch tip, you must use straight back-and-forth motion to keep from doing what? correct answers Enlarging the orifice Gas leakage around a torch tip is usually caused by what? correct answers A damaged tip seat The safest way for you to light a welding torch is to use what? correct answers A flint igniter A pure acetylene flame is smoky for what reason? correct answers There is not enough oxygen in the air to burn the acetylene completely What part of an oxyacetylene torch flame produces the high temperature needed for welding? correct answers Inner cone A neutral flame is produced by mixing approximately how much of each gas? correct answers One part acetylene to one part oxygen The reason that regulators are bled during oxyacetylene close down is to do what? correct answers Relieve pressure on the diaphragm