Always close the cylinder valve and replace protective cover before moving the. It can be used for cutting steel, welding steel, brazing and for heating metal. An introduction to gas welding oxyacetylene youtube. Be sure cylinders are fastened with a chain as a protection against falling or rolling. A welding torch is used to mix the gases in the proper proportions and to direct the flame against the parts to be welded. Oxyacetylene and oxymapp methylacetylenepropadiene welding are two types of gaswelding processes. One of the most commonly used applications of acetylene gas is oxyacetylene welding, oxy welding, or gas welding. The oxy acetylene welding process combines oxygen and acetylene gas to provide a high temperature flame for welding. For most welding applications, theres an arc welding. Competencies given a functional oxyfuel gas unit, instruction and demonstration of use, each student will be able to. The oxyacetylene welding process uses a combination of oxygen and. The process is also useful for a large amount of repair work. Chart and diagram slides for powerpoint beautifully designed chart and diagram s for powerpoint with visually stunning graphics and animation effects.
Do not extinguish, unless leak can be stopped safely. Gap wirea wire used for correct spacing of butt joints. Giving an overview of the gas or oxy acetylene welding processes. Oxyacetylene gas welding technique knowledge zone, the. Oxy acetylene welding ofw fundamentals pressure settings. In this welding the welder should wear all protective clothing and helmet. Gas welding is probably the oldest of the welding processes and gas welding equipment is arguably the most versatile. An introduction to gas welding oxyacetylene this is a video by the world association of technology teachers. A complete, practical manual for gas welding and cutting practice ted b. Gas welding oxy acetylene welding in gas welding, a gas flame is used to melt the edges of metals to be joined. The fuel gas selection is depends on the welding material. Gas welding oxyacetylene welding in gas welding, a gas flame is used to melt the edges of metals to be joined. Oxyacetylene and oxy mapp methylacetylenepropadiene welding are two types of gas welding processes. A filler rod is used to deposit additional metal as necessary to merge the two base materials.
Oxyacetylene is the typical combination used in gas welding and is generally chosen for general cutting and welding work including work to repair rips and tears in metal. Oxyacetylene welding o 2, c 2h oxyacetylene welding is a gas welding process. Based on the amount of oxygen taken from the oxygen cylinder, the flame produced in oxyacetylene gas welding is divided into three types. Welding welding is a materials joining process which produces coalescence of materials by heating them to suitable temperatures with or without the application of pressure or by the application of pressure alone, and with or without the use of filler material. This welding on the web box will appear throughout the manual. Oxyacetylene welding it is the common method of gas welding. Jan 14, 2017 in this video we will discuss about what is oxygen acetylene welding. Nov 07, 2018 gas welding oxy acetylene,equipment details,types of flames,applications gas welding process pdf. This flame in turn melts the metal faces of the two pieces to be welded, causing the liquified metal to flow between and join them. Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. By the end of this unit each apprentice will be able to. Normally these cylinders have maroon line to indicate it. The position of the welding rod and welding torch is almost same as the welding in horizontal position. Giving an overview of the gas or oxyacetylene welding processes.
Acetylene is the only fuel gas suitable for gas welding because of its favourable flame characteristics of both high temperature and high propagation rates. The chemical reaction between acetylene and oxygen is exothermic in nature. Oxidation of the joint faces is prevented by an envelope made. Weve worked hard to produce gas welding kits to suit as many applications, and pockets, as possible. One of the most commonly used applications of acetylene gas is oxy acetylene welding, oxy welding, or gas welding. Fusion weldinga welding process that joins metals by heating them to be a. Proper eye protection must be wornoperate only with instructors permission and after proper instructions have been received. In oxyacetylene welding, oxygen and acetylene gas are combined in a torch handle to produce a flame that burns at over 6000 degrees fahrenheit.
Oxygen and acetylene are the gases used to produce the welding flame. The pressure amount of gas in an oxygen cylinder is 1980 lbin. Our new crystalgraphics chart and diagram slides for powerpoint is a collection of over impressively designed datadriven chart and editable diagram s guaranteed to impress any audience. Chemical reactions and temperature distribution in a neutral oxyacetylene the secondary combustion is also called the protection envelope since co and h2 here consume the o2 entering from surrounding air, thereby protecting. The oxy acetylene welding process uses a combination of oxygen and acetylene gas in the approved ratio to provide a high temperature flame. Apr 16, 2017 gas cylinder is filled either by oxy acetylene gas, hydrogen gas, natural gas or other flammable gas. In fact, the oxyacetylene flame burns at 6000 f, and is the only gas flame that is hot enough to melt all commercial metals. Oxyacetylene gas welding process is widely used commercially for welding of ferrous and nonferrous metals particularly for thin sections up to 6 mm thick. 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.
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 an. In addition to the purposes of welding connecting, gas welding can also be used as preheating, brazing, cutting, and hard facing. Oxy acetylene is the typical combination used in gas welding and is generally chosen for general cutting and welding work including work to repair rips and tears in metal. Unit 9 oxyacetylene welding plant and safety duration 6. Competencies given a functional oxy fuel gas unit, instruction and demonstration of use, each student will be able to. Oxyfuel welding, commonly referred to as oxy welding or gas welding is a. Ppt oxyacetylene welding powerpoint presentation free.
Osha safety and health standards, 29 cfr 1910, available from u. This temperature provides enough heat to melt most metal. Fusion weldinga welding process that joins metals by heating them to be a melting point and allowing them to fuse or flow together. However, it is still widely used for a variety of applications. Oxy acetylene welding o 2, c 2h oxyacetylene welding is a gas welding process. The oxyacetylene torch can be used for various tasks. Oxyfuel welding commonly called oxyacetylene welding, oxy welding, or gas welding in the united states and oxyfuel cutting are processes that use fuel gases or liquid fuels such as gasoline and. Fundamentals of gas cutting and welding cedengineering. 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. As a welding torch, the basic operation of an oxyacetylene unit is blending two gases, oxygen and. Nov 17, 2016 an introduction to gas welding oxyacetylene this is a video by the world association of technology teachers.
Thelittletorch kit top precision and control for your smallest oxyfuel jobs. When the flame comes in contact with steel, it melts the surface forming a molten pool, allowing welding to take place. 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. Mostly oxy acetylene gas is used for all general purpose of welding. Safety for oxyacetylene welding thompson rivers university.
Each gas is contained in its own cylinder and combined through the use of separate hoses leading from regulators attached to the top of the cylinders. Both require a gasfueled torch to raise the temperature of two similar pieces of metal to. This flame in turn melts the metal faces of the two pieces. Review the notes on lighting the torch and on safety. With the right gas welding equipment you can gas weld, braze, silver solder, heat and. The spark lighter is used to ignite the oxyacetylene mixture at the tip of cutting torch.
Seminar on gas welding seminar report pdf download. 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. Both require a gas fueled torch to raise the temperature of two similar pieces of metal to the fusion point that allows them to flow together. Oxyacetylene principle of operation a fusion welding process, heat is concentrated on the joint edges until the metal melts and starts to flow. Oxyacetylene welding acetylene gas plant, acetylene. Describe the components and their function of oxyacetylene welding plant. In this process coalescence or bond is produced by heating with the gas flame obtained from the combustion of. Oxy acetylene welding leaving certificate engineering notes. Acetylene cylinders are equipped with fusible metal safety plugs and not. Worlds best powerpoint templates crystalgraphics offers more powerpoint templates than anyone else in the world, with over 4 million to choose from. Other fuel gases, such as propane, propylene or natural gas, produce insufficient heat input for welding but are used for cutting, torch brazing and soldering. Oxy acetylene gas welding process is widely used commercially for welding of ferrous and nonferrous metals particularly for thin sections up to 6 mm thick. A flux is used during welting to prevent oxidations and to remove impurities. In this video we will discuss about what is oxygen acetylene welding.
The other equipments serves the same function as in case of oxyacetylene gas welding. A mixture of oxygen and acetylene, burns as an intense focussed flame, at approximately 3,500 degrees centigrade. Oxyacetylene welding is simple in concept two pieces of metal are brought together, and the touching edges are melted by the flame with or without the addition of filler rod. French engineers edmond fouche and charles picard became the first to develop oxygenacetylene welding in 1903. Ppt oxyacetylene welding powerpoint presentation free to. Oxy acetylene gas welding kits the welders warehouse. The chemical action of the oxyacetylene flame can be adjusted. Box 1079 appleton, wi 549121079 usa equipment sales us and canada phone. Oxyfuel welding, heating and cutting concoa gas pressure. 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. Fusion welding a welding process that joins metals by heating them to be a melting point and allowing them to fuse or flow together. Oxy fuel equipment is versatile, lending itself to welding, brazing, braze welding, silver soldering, metal heating for bending and forming and oxy fuel cutting. Oxygen acetylene welding easily understand youtube.
Fundamentals of gas cutting and welding ced engineering. Oxyacetylene gas welding is commonly used to permanently join mild steel. Gas welding experiment gas welding i objectives giving. Describe the components and their function of oxyacetylene. Llc an itw welding company 1635 west spencer street p. The chemical action of the oxy acetylene flame can be adjusted. In oxy acetylene welding, oxygen and acetylene gas are combined in a torch handle to produce a flame that burns at over 6000 degrees fahrenheit. The oxyacetylene welding process combines oxygen and acetylene gas to provide a high temperature flame for welding. Oxyacetylene welding acetylene gas plant, acetylene plant.
Oxy acetylene principle of operation a fusion welding process, heat is concentrated on the joint edges until the metal melts and starts to flow. Oxyacetylene oa welding is one of the many types of welding supported by the prl. Pass a written test on safety and operation procedures on the oxy acetylene unit with a minimum of 100 accuracy. Oxyacetylene welding is simple in concept two pieces of metal are brought. Oxy acetylene welding is simple in concept two pieces of metal are brought together, and the touching edges are melted by the flame with or without the addition of filler rod. Gas welding is also named as oxyfuel gas welding ofw. Open the valve on the acetylene cylinder no more than threefourths of a turn so it can be closed quickly in case of emergency.
In fact, the oxy acetylene flame burns at 6000 f, and is the only gas flame that is hot enough to melt all commercial metals. In this process coalescence or bond is produced by heating with the gas flame obtained from the combustion of acetylene with oxygen. Operation oxygen and acetylene gas are burned at the tip of the nozzle on the welding torch. Gas cylinder is filled either by oxy acetylene gas, hydrogen gas, natural gas or other flammable gas. Aug 02, 2018 oxy acetylene welding it is the common method of gas welding. When mixed together in correct proportions within a handheld torch or blowpipe, a hot. For complete combustion of one unit volume of acetylene, 2.
It is a welding process that melts and joins the metals by heating them with a flame caused by a reaction of fuel gas and oxygen. Oxyfuel welding commonly called oxyacetylene welding, oxy welding, or gas welding in the united states and oxyfuel cutting are processes that use fuel gases or liquid fuels such as gasoline and oxygen to weld or cut metals. When mixed together in correct proportions within a handheld torch or blowpipe, a hot flame is produced with a temperature of about 3,200c. 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 process without emphasis. Describe the hazards and safety features of oxyacetylene welding plant. Oxygenacetylene welding, or gas welding, is a process which relies on combustion of oxygen and acetylene. Typical applications of the process include fabrication of ventilation and airconditioning ducts and repair of vehicles.