The oxyacetylene welding process uses a combination of oxygen and acetylene gas in the approved ratio to provide a high temperature flame. Welding done on galvanized metal and the brazing process are examples where zinc oxides. When finished welding shut off the main valves, bleed. Welding metals with oxyacetylene gas welding process in the downhand position. Understand the complete range of welding practices. Oxygenacetylene welding, or gas welding, is a process which relies on combustion of oxygen and acetylene.
Temperatures from the combustion of oxygen o2 gas and ethyne, or acetylene c2h2 gas can reach 3,340 degrees celsius, which is hot enough to cut through steel. 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. Mar 05, 2014 oxyacetylene welding oaw the oxyacetylene welding process uses a combination of oxygen and acetylene gas to provide a high temperature flame. Oxyacetylene welding is a very common welding process. Oxy acetylene is quite common in automotive repair shops, as well as plumbing applications, fabricating, and even artisan welding. Selecting, assembling and conducting preoperational checks of oxyacetylene gas welding equipment. In fact, the oxyacetylene flame burns at 6000 f, and is. Competencies given a functional oxy fuel gas unit, instruction and demonstration of use, each student will be able to. It can be used for cutting steel, welding steel, brazing and for heating metal. Requests for official interpretations of any aspect of this international standard should be directed to the iso central secretariat, who will forward them to the iiw secretariat for an official response. The oxyacetylene handbook is a basic handbook or manual on oxyacetylene welding and cutting and their related processes. Open the acetylene needle valve on the torch and which is blown or washed out of the kerf by the force allow gas in the hose to escape for 5 to 15 seconds.
For welding the mild steel, open oxygen torch valve and adjust to neutral flame. The procedures used to develop this document and those intended for its further maintenance are described in the isoiec directives, part 1. Competencies given a functional oxyfuel gas unit, instruction and demonstration of use, each student will be able to. In order to comfortably and safely see the flame when welding or cutting, welding goggles must be worn. There are three main techniques used in oxyfuel welding. Characteristics of the oxyacetylene welding process. Adjust the oxygen regulator screw by turning it clockwise until the recommended pressure is achieved. The edges of the pipes are bevelled at 70 and butted together with a gap of approximately 2. It is an invaluable aid to industry as well as in schools and universities. If you are welding aluminum metal, it is ok to use mild steel filler rod.
Gap wirea wire used for correct spacing of butt joints. The oxy acetylene handbook is a basic handbook or manual on oxy acetylene welding and cutting and their related processes. Oxy acetylene welding leaving certificate engineering notes. Video an introduction to gas welding oxyacetylene oxyacetylene gas welding is commonly used to permanently join mild steel. Sep 10, 2007 oxy acetylene welding practice preparation of work.
Harris 23a903 oxyacetylene weld tip1600870 the home depot. When mixed together in correct proportions within a handheld torch or blowpipe, a relatively hot flame is produced with a temperature of about 3,200 deg. Materials oxygen cylinder, acetylene cylinder, regulator, valves, torch, welding tips, goggles, friction lighter, tip cleaner, personal safety equipment. Oxyfuel welding and oxyfuel cutting are processes that use fuel gases and oxygen to weld or.
Pass a written test on safety and operation procedures on the oxyacetylene unit with a minimum of 100 accuracy. When mixed together in correct proportions within a handheld torch or blowpipe, a hot flame is produced with a temperature of about 3,200c. Oxyacetylene equipment should not be left near hot equipment or metals which could burn the leads. Oxyfuel oxyacetylene welding a guide to gas welding twi. Oxyacetylene welding oxyacetylene oa welding is one of the many types of welding supported by the prl.
Materials oxygen cylinder, acetylene cylinder, regulator, valves, torch, welding tips, goggles, friction lighter, tip cleaner, personal safety equipment key points and supporting information. The heat from the torch allows for the melting and mixing of the base metal and filler metal to form a solid weld. Its designed for welding and brazing with acetylene and hydrogen. The oxyacetylene process produces a high temperature flame, over 3000 degrees c, by the combustion of pure oxygen and acetylene. A complete, practical manual for gas welding and cutting practice ted b. Oxyacetylene oa welding is one of the many types of welding supported by the dp metals shop. Jan 25, 2017 oxy acetylene welding is a very common welding process that dates back to 1890s, wherein oxygen and acetylene are used as the two major welding gases. Every effort has been extended in the preparation of this book to make it a textbook on the manual application of the oxyacetylene processes that. 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. Welding manuals stick mig tig oxy acetylene plasma. Mem05022c perform advanced welding using oxy acetylene welding process date this document was generated. The use of oxygen and acetylene as welding gases dates back to the 1890s.
There is a number of equipment needed for the procedure. Fundamentals of gas cutting and welding ced engineering. Oxyacetylene and oxymapp methylacetylenepropadiene welding are two types of gaswelding processes. Oxygenacetylene welding, or gas welding, is a process which relies on. Refer to the victor acetylene cutting tip chart in appendix a or welding nozzle flow data in appendix b for the recommended pressures.
Understanding of the oxyacetylene gas welding process. An introduction to welding how to oxyacetylene weld ideas. In oxy fuel gaswelding processes, the combustion takes place in two stages. One of the most commonly used applications of acetylene gas is oxyacetylene welding, oxy welding, or gas welding. Oxyacetylene welding oaw oaw is a manual process in which the welder must personally control the the torch movement and filler rod application the term oxyfuel gas welding outfit refers to. 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. Fusion weldinga welding process that joins metals by heating them to be a melting point and allowing them to fuse or flow together. Wind up the hoses when finished shutting everything. A mixture of oxygen and acetylene, burns as an intense focussed flame, at approximately 3,500 degrees centigrade. Proper attention to maintenance of equipment is necessary to prevent accidents. The oxyacetylene torch is a safe tool if used properly. Unit ii oxygas and other cutting welding processes. A complete, practical manual for gas welding and cutting practice.
Oxyacetylene welding by matt scott introduction oaw is a welding process that heats the base metal with a controlled mixture of acetylene and oxygen gas. Learn about applied metallurgy, welding process applications, safety and troubleshooting. When using an oxygenfuel gas process to perform welding or cutting, the operator. 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. When attaching the welding nozzle to the torch handle you use. Ten years ago the oxyacetylene method of welding and cut ting metals was hardly more than a laboratory process, but in the course of these few years. Welding and cutting with oxyacetylene can create harmful fumes. Mem05022c perform advanced welding using oxy acetylene.
Using the oxy acetylene weld tip is the best way to join dissimilar metals, or repair cast iron. Objective identify and use the safety practices that should be observed when welding with oxyacetylene gas. The oxyacetylene torch can be used for various tasks. In particular the different approval criteria needed for the different types of iso documents should be noted. Oxyacetylene oa welding is one of the many types of welding supported by the prl.
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. This is a special welding technique used for butt welding of steel pipes. Torches that do not mix fuel with oxygen combining, instead, atmospheric air are not. Iso 14373 was prepared by iiw, international institute of welding, commission iii. Both require a gasfueled torch to raise the temperature of two similar pieces of metal to the fusion point that allows them to flow together. Pure oxygen, instead of air, is used to increase the. By definition, oxy acetylene welding is a process of. Selecting, assembling and conducting preoperational checks of oxy acetylene gas welding equipment.
The sample oxy acetylene welding safe work method statement job safety analysis is an extract of the first two identified health and safety hazards associated with the operation and how to use oxy acetylene welding equipment. Oxyacetylene welding, commonly referred to as gas welding, is a process which relies on combustion of oxygen and acetylene. The same type of oxyfuel welding apparatus is used in all cases, but the torch welding tip size could be changed depending on the amount of btu heat output. 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. Open the valve on the acetylene cylinder no more than threefourths of a turn so it can be closed quickly in case of emergency. Welding metals with oxy acetylene gas welding process in the downhand position. By definition, oxyacetylene welding is a process of.
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. The instructor will give you a series of welding and cutting procedures to perform. Oxy acetylene oa welding is one of the many types of welding supported by the dp metals shop. How to weld an introduction to oxyacetylene welding and cutting. The chemical action of the oxyacetylene flame can be adjusted. An efficient flux will combine with oxides to form a fusible slag. A filler rod is used to deposit additional metal as necessary to merge. However, if it is used incorrectly, serious injury can occur to you and the equipment. Every effort has been extended in the preparation of this book to make it a textbook on the manual application of the oxy acetylene processes that. In addition to the purposes of welding connecting, gas welding can also be used as preheating, brazing, cutting, and hard facing. Ome8037 product images are for illustration purposes only, unless otherwise specified colour may be different. Oxyacetylene welding also known as oxyacetylene welding uses an oxyfuel gas flame can be applied with or without pressure can be applied with or without the use of filler materials 5. Safety for oxyacetylene welding thompson rivers university.
There is a number of equipment needed for the procedure, including. While welding, the pipes are rotated constantly so as to weld the seam in the horizontal position only. Oxygen acetylene welding, or oxy acetylene welding, is a process for joining metals that was introduced in 1903 by thomas wilson. Nov 18, 20 oxyacetylene welding also known as oxyacetylene welding uses an oxyfuel gas flame can be applied with or without pressure can be applied with or without the use of filler materials 5. Unit iioxygas and other cuttingwelding processes student handout section i. The oxy acetylene and other oxy fuel gas mixtures welding torch remains a mainstay heat source for manual brazing and braze welding, as well as metal forming, preparation, and localized heat treating.
Pass a written test on safety and operation procedures on the oxy acetylene unit with a minimum of 100 accuracy. A practical manual of oxy acetylene welding and cutting with a treatise on acetylene and oxygen, by p. Understanding of the oxy acetylene gas welding process. Oxyacetylene welding oaw the oxyacetylene welding process uses a combination of oxygen and acetylene gas to provide a high temperature flame. The oxy acetylene process is quite versatile, and can be used to weld most metals, it can be used as a cutting torch, as a brazing torch, and as a torch to heat metals for bending and forming. In addition, oxy fuel cutting is still widely used, both in heavy industry and light industrial and repair operations. This document is not an application manual and does not contain a complete statement of. Soldering is the method of joining similar or dissimilar metals by means of a filler metal.
Oxy acetylene welding ofw fundamentals pressure settings. The combination of oxygen and acetylene produces a flame temperature over 6000 degrees fahrenheit making it ideal for welding and cutting. Describe the different types of welding flame and welding techniques. Two of these techniques are used to weld flat joints and one is used for allposition welding. The practice of heating the metal around the weld before applying the torch flame is a desirable one for two reasons. Dont smoke when welding or near welding and dont keep your lighter in your pocket it could explode. Fundamentals of gas cutting and welding cedengineering. It is extremely versatile, and with enough skill and practice you can use this type of welding for virtually any metal.
Oxyacetylene welding is a very common welding process that dates back to 1890s, wherein oxygen and acetylene are used as the two major welding gases. A practical manual of oxyacetylene welding and cutting with a treatise on acetylene and oxygen, by p. The oxyacetylene process is quite versatile, and can be used to weld most metals, it can be used as a cutting torch, as a brazing torch, and. It is the only gas mixture hot enough to melt steel. A singlestage regulator will tend to allow a reduction in outlet pressure as the cylinder is emptied, requiring manual readjustment. Oxyacetylene is quite common in automotive repair shops, as well as plumbing applications, fabricating, and even artisan welding. The oxyacetylene flame produces an intense bright light that causes discomfort and possible injury to the eyes.
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