Hard- Surfacing, Building Fusion Welding Carbon Welding Non-Ferrous Metals Heating & Heat Treating Braze Welding Welding Cast Iron Welding Ferrous Metals Brazing & Soldering Equipment Set-Up Operation Equipment For OXY-Acet Structure of Steel Mechanical Properties of Metals Oxygen & Acetylene OXY-Acet Flame Physical Properties of Metals How Steels Are Classified Expansion & Contraction Prep For Welding OXY-Acet Welding & Cutting Safety Practices Manual Cutting Oxygen Cutting By Machine Appendices Testing & Inspecting
13 If a torch flame is misshaped or irregular, cleaning of the orifice in tip or nozzle is required. Use of stainless steel tip cleaners made especially for this purpose is recommended. A twist drill of the proper size can also be used, but it should be pushed straight in-and-out, not twisted. Do not attempt to use any tool which might enlarge or bell-mouth the orifice. Hose: In addition to testing for leaks at all hose connections, you should always inspect your hose carefully for external evidence of damage before starting work. If such evidence is found, test that section of the hose by dipping it in a bucket of water while there is pressure in the hose. If that discloses leakage, it is imperative that the hose be discarded, or that the leaky section be cut out and replaced. (Instructions for splicing will be found in the Appendix.) Never attempt to repair welding hose with tape. Nothing stated above should be considered as contradicting specific instructions furnished by the manufacturer of the equipment actually in use. Always follow his instructions. Never attempt repairs which are not covered by the manufacturer’s instructions or by the general suggestions given above. Above all, and we repeat, DO NOT USE APPARATUS OR HOSE WHICH YOU KNOW IS IN NEED OF REPAIR.