Care must be taken to avoid the contact of the flame with any combustible. Fusion weldinga welding process that joins metals by heating. The spark lighter is used to ignite the oxyacetylene mixture at the tip of cutting torch. Welding is aprocess of joining two metals by heating them to melting point. The oxyacetylene welding process uses a combination of oxygen and.
Oxy acetylene welding torch oxygen and the fuel gas having been reduced in pressure by the gas regulators are fed through suitable hoses to a welding torch which mixes and controls the flow of gases to the welding nozzle or tip where the gas mixture is burnt to produce a flame for carrying out gas welding operation. Its a shame, because oxy acetylene welding teaches you how to manipulate a heat source better than any. The harris products group is a world leader in metal working products used in the brazing, soldering, welding, cutting and gas distribution industries. Oxyfuel welding ofw is a group of welding processes that join metals by heating them with a fuel gas flame or flares with or without the application of. The oxyacetylene torch can be used for various tasks. Given a functional oxyfuel gas unit, instruction and demonstration of use, each student will be able to. Oxyfuel cutting uses acetylene and oxygen to preheat metal to red hot and then uses pure. Oxyacetylene welding, commonly referred to as gas welding, is a process which relies on combustion of oxygen and acetylene. Heat the edges to the melting point let the edges solidify into a single unit.
Gas welding and cutting oxy fuel welding, commonly referred to as oxy welding or gas welding is a process of joining metals by application of heat created by gas flame. Oxy acetylene welding ofw fundamentals pressure settings. Now open both cylinders valves no specific order but only open the acetylene tank about a 12 turn, the oxygen should be opened all the way. Nonreturn valves fitted to the hoses will detect and stop reverse gas flow preventing an inflammable oxygen and acetylene mixture from forming in the hose.
In this process the mixture of oxyacetylene and oxygen presented, which is flow to the burning process and controlled by control valve. If the oxy welding cutting equipment is to be operated in a dangerous. Oxygen and acetylene together in a flame provide the heat necessary to melt most metals. Gas welding is a method of joining similar metals by heating the adjacent surfaces to the melting point with an oxy acetylene flame, and allowing the two parts to fuse together, with a filler metal being required on materials 5mm thick or more. What is the difference between gas welding and braze. Smith regulators are available in economy and premium grades for hobbyists and pros. Oxy acetylene gas welding kits the welders warehouse. Unfortunately, gas welding isnt taught as regularly as it used to be. The chemical action of the oxy acetylene flame can be adjusted. Oxygen acetylene welding, or gas welding, is a process which relies on combustion of oxygen and acetylene. Gas welding experiment gas welding i objectives giving. Air products welders handbook migmag welding principles gas shielded metal arc welding is a semiautomatic process which is suitable for both manual and mechanised operation. Mediumduty oxyacetylene cutting and welding outfit 770 502. Oxy fuel gas cutting and welding operation of oxy fuel torches involves oxygen and flammable gases under pressure, open flames, flying slag and hot metal, meatl fumes and combustion products.
With the right gas welding equipment you can gas weld, braze. Institute of chicago by providing instruction and technical assistance to students. Oxy acetylene welding is a welding process manually, in which the surfaces to be joined, which is warming to melt by a gas flame oxyacetylene with or without filler metal, where the connection. Competencies given a functional oxyfuel gas unit, instruction and demonstration of use, each student will be able to. Gas welding and cutting oxyfuel welding, commonly referred to as oxy welding or gas welding is a process of joining metals by application of heat created by gas flame. Braze welding braze welding differs from gas welding in that the melting temperature. The other equipments serves the same function as in case of oxyacetylene gas welding. Generally, only oxyacetylene in specific cases oxyhydrogen is recommended for oxyfuel welding.
Oxyfuel kits, cutting welding and brazing portable oxyfuel outfit features brass handle heavyduty brass regulators solid onepiece tip and mixer design packaged for p. When mixed together in correct proportions within a handheld torch or blowpipe, a hot flame is produced with a temperature of about 3,200c. The welding torch is opened, both gases are combined. Oxyacetylene oa welding is one of the many types of welding supported by the prl. Oxyacetylene welding acetylene gas plant, acetylene. However, it is still widely used for a variety of applications. Fundamentals of gas cutting and welding cedengineering. This booklet is presented as a guide only to the safe and efficient operation of oxyfuel welding, cutting and heating apparatus. Gas welding is probably the oldest of the welding processes and gas welding equipment is arguably the most versatile. This oxygen acetylene cutting and welding kit should only be used by operators who are properly trained and qualified in the safe use of this type of.
When mixed together in correct proportions within a handheld torch or. Giving an overview of the gas or oxyacetylene welding processes. Many different energy sources can be used for welding including gas flames, electric arcs, electric resistance, lasers, electron beams, friction, molten metal baths and ultrasound. This booklet is presented as a guide only to the safe and efficient operation of oxy fuel welding, cutting and heating apparatus.
Oxy acetylene gas welding pdf gas metal arc welding mig. This means if acetylene reaches 30 psi in a free state, it can explode by itself without a spark or flame being present. Check valves and flashback arrestors are safety devices for protecting workers using oxyfuel cutting and welding equipment. In order to comfortably and safely see the flame when welding or cutting. How to operate an oxyacetylene cutting torch snapguide. Oxygenacetylene welding, or gas welding, is a process which relies on combustion of oxygen and acetylene.
Oxyacetylene, commonly known as oxyfuel, is one of the. Safe operating procedures sop 15 oxy acetylene cutting. The fuel gas commonly acetylene, when mixed with proper proportion of oxygen in a mixing chamber of welding torch, produces a very hot flame of about 57005800f. The fuel gas selection is depends on the welding material. One of the most commonly used applications of acetylene gas is oxyacetylene welding, oxy welding, or gas welding. Propane, propylene, or oxy acetylene, welders supply has a regulator for your rig.
Fundamentals of gas cutting and welding ced engineering. It is acceptable to use acetylene regulators that indicate a static pressure up to 22 psi 151 kpa. Cutting with the oxyfuel process is just the opposite from of welding. The oxyfuel process utilizes a flame to generate heat for cutting, welding and brazing. Keep torch flame or sparks away from cylinder, regulator, and gas hose. Gas cylinder is filled either by oxy acetylene gas, hydrogen gas, natural gas or other flammable gas. Oxyfuel gas cutting and welding operation of oxyfuel torches involves oxygen and flammable gases under pressure, open flames, flying slag and hot metal, meatl fumes and combustion. It can be used for cutting steel, welding steel, brazing and for. The oxyacetylene and other oxyfuel gas mixtures welding torch remains a mainstay heat source for manual brazing and braze welding, as well as metal forming, preparation, and. Process and safety, ontario regulation 15304 pdf unit 2. Follow the precautions in this safety section and those throughout this manual for your personal safety and the safety of people near the equipment. Oxy fuel equipment is versatile, lending itself to welding, brazing, braze welding, silver soldering, metal heating for bending and forming and oxy fuel cutting. February 2015 issue 2 pg 2 of 2 the instructions recommended within this document apply to normal risk conditions. A complete, practical manual for gas welding and cutting practice ted b.
Gas cutting gas cutting, sometimes referred to as flame cutting or oxygen cutting, involves an active exothermic oxidation of the steel being cut when the material has been preheated by an. Gas welding is a method of joining similar metals by heating the adjacent surfaces to the melting point with an. The oxyacetylene flame produces an intense bright light that causes discomfort and possible injury to the eyes. A check valve is a device that is designed to prevent the. With instruction and practice it can also be used to weld and braze steel and cast iron, which can sometimes be too difficult with the arc welding process. As presented in the introduction to welding chapter, mapp c 3 h 4 methylacetylenepropadiene is an allpurpose industrial fuel with the highflame temperature of acetylene and the handling. Use only acetylene or propane gas and oxygen with this equipment. Oxyfuel oxyacetylene welding a guide to gas welding. Safety for oxyacetylene welding thompson rivers university. Australian standards as 4839 safe use of portable oxy fuel gas systems.