The edges of the pipes are bevelled at 70 and butted together with a gap of approximately 2. Oxyacetylene and oxymapp methylacetylenepropadiene welding are two types of gaswelding processes. If you are welding aluminum metal, it is ok to use mild steel filler rod. Ome8037 product images are for illustration purposes only, unless otherwise specified colour may be different. Oxyfuel welding ofw is a group of welding processes that join metals. Describe the different types of welding flame and welding techniques.
Open the valve on the acetylene cylinder no more than threefourths of a turn so it can be closed quickly in case of emergency. Oxy acetylene welding leaving certificate engineering notes. 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. Using the oxy acetylene weld tip is the best way to join dissimilar metals, or repair cast iron. However, if it is used incorrectly, serious injury can occur to you and the equipment. A complete, practical manual for gas welding and cutting practice. A singlestage regulator will tend to allow a reduction in outlet pressure as the cylinder is emptied, requiring manual readjustment. Competencies given a functional oxyfuel gas unit, instruction and demonstration of use, each student will be able to. There is a number of equipment needed for the procedure. Oxyacetylene welding is a very common welding process. 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. 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.
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. The oxyacetylene torch can be used for various tasks. Welding manuals stick mig tig oxy acetylene plasma. 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.
Competencies given a functional oxy fuel gas unit, instruction and demonstration of use, each student will be able to. Oxy acetylene oa welding is one of the many types of welding supported by the dp metals shop. Proper attention to maintenance of equipment is necessary to prevent accidents. The instructor will give you a series of welding and cutting procedures to perform. The practice of heating the metal around the weld before applying the torch flame is a desirable one for two reasons. 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 extremely versatile, and with enough skill and practice you can use this type of welding for virtually any metal.
When attaching the welding nozzle to the torch handle you use. When finished welding shut off the main valves, bleed. By definition, oxyacetylene welding is a process of. Oxyacetylene welding, commonly referred to as gas welding, is a process which relies on combustion of oxygen and acetylene. 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. 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.
Refer to the victor acetylene cutting tip chart in appendix a or welding nozzle flow data in appendix b for the recommended pressures. Mar 05, 2014 oxyacetylene welding oaw the oxyacetylene welding process uses a combination of oxygen and acetylene gas to provide a high temperature flame. In fact, the oxyacetylene flame burns at 6000 f, and is. Pass a written test on safety and operation procedures on the oxyacetylene unit with a minimum of 100 accuracy. Selecting, assembling and conducting preoperational checks of oxy acetylene gas welding equipment. The use of oxygen and acetylene as welding gases dates back to the 1890s.
A complete, practical manual for gas welding and cutting practice ted b. Materials oxygen cylinder, acetylene cylinder, regulator, valves, torch, welding tips, goggles, friction lighter, tip cleaner, personal safety equipment. Adjust the oxygen regulator screw by turning it clockwise until the recommended pressure is achieved. Harris 23a903 oxyacetylene weld tip1600870 the home depot. Unit iioxygas and other cuttingwelding processes student handout section i. The oxyacetylene process produces a high temperature flame, over 3000 degrees c, by the combustion of pure oxygen and acetylene. The harris product group 23a901 oxy acetylene weld tip the harris product group 23a901 oxy acetylene weld tip is fully swaged for a smooth bore, long cone and positive flame control. Oxyacetylene equipment should not be left near hot equipment or metals which could burn the leads. Objective identify and use the safety practices that should be observed when welding with oxyacetylene gas.
Oxyacetylene welding oxyacetylene oa welding is one of the many types of welding supported by the prl. Safety for oxyacetylene welding thompson rivers university. Welding and cutting with oxyacetylene can create harmful fumes. For welding the mild steel, open oxygen torch valve and adjust to neutral flame. Wind up the hoses when finished shutting everything. Welding metals with oxyacetylene gas welding process in the downhand position. Soldering is the method of joining similar or dissimilar metals by means of a filler metal. It can be used for cutting steel, welding steel, brazing and for heating metal. Learn about applied metallurgy, welding process applications, safety and troubleshooting. Oxygenacetylene welding, or gas welding, is a process which relies on.
Oxy acetylene is quite common in automotive repair shops, as well as plumbing applications, fabricating, and even artisan welding. It is an invaluable aid to industry as well as in schools and universities. Oxygenacetylene welding, or gas welding, is a process which relies on combustion of oxygen and acetylene. Fundamentals of gas cutting and welding ced engineering. 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. In order to comfortably and safely see the flame when welding or cutting, welding goggles must be worn. The chemical action of the oxyacetylene flame can be adjusted. Its designed for welding and brazing with acetylene and hydrogen. 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. Unit ii oxygas and other cutting welding processes. The oxyacetylene welding process uses a combination of oxygen and acetylene gas in the approved ratio to provide a high temperature flame. The oxyacetylene handbook is a basic handbook or manual on oxyacetylene welding and cutting and their related processes.
A practical manual of oxyacetylene welding and cutting with a treatise on acetylene and oxygen, by p. In oxy fuel gaswelding processes, the combustion takes place in two stages. Characteristics of the oxyacetylene welding process. The oxy acetylene handbook is a basic handbook or manual on oxy acetylene welding and cutting and their related processes. 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. Oxyfuel welding and oxyfuel cutting are processes that use fuel gases and oxygen to weld or.
Oxy acetylene welding ofw fundamentals pressure settings. 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 weldinga welding process that joins metals by heating them to be a melting point and allowing them to fuse or flow together. 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.
Pass a written test on safety and operation procedures on the oxy acetylene unit with a minimum of 100 accuracy. 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. Oxyacetylene oa welding is one of the many types of welding supported by the dp metals shop. Welding done on galvanized metal and the brazing process are examples where zinc oxides. Oxyacetylene oa welding is one of the many types of welding supported by the prl. Oxyfuel oxyacetylene welding a guide to gas welding twi. Mem05022c perform advanced welding using oxy acetylene. When using an oxygenfuel gas process to perform welding or cutting, the operator. When mixed together in correct proportions within a handheld torch or blowpipe, a hot flame is produced with a temperature of about 3,200c. Iso 14373 was prepared by iiw, international institute of welding, commission iii. The procedures used to develop this document and those intended for its further maintenance are described in the isoiec directives, part 1. A practical manual of oxy acetylene welding and cutting with a treatise on acetylene and oxygen, by p. While welding, the pipes are rotated constantly so as to weld the seam in the horizontal position only.
There is a number of equipment needed for the procedure, including. Video an introduction to gas welding oxyacetylene oxyacetylene gas welding is commonly used to permanently join mild steel. 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. The heat from the torch allows for the melting and mixing of the base metal and filler metal to form a solid weld. 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. One of the most commonly used applications of acetylene gas is oxyacetylene welding, oxy welding, or gas welding. Oxyfuel oxyacetylene welding a guide to gas welding. A mixture of oxygen and acetylene, burns as an intense focussed flame, at approximately 3,500 degrees centigrade. Mem05022c perform advanced welding using oxy acetylene welding process date this document was generated.
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. 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. 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. The oxyacetylene torch is a safe tool if used properly. There are three main techniques used in oxyfuel welding. In particular the different approval criteria needed for the different types of iso documents should be noted. Sep 10, 2007 oxy acetylene welding practice preparation of work.
Understanding of the oxyacetylene gas welding process. Torches that do not mix fuel with oxygen combining, instead, atmospheric air are not. Pure oxygen, instead of air, is used to increase the. The oxyacetylene flame produces an intense bright light that causes discomfort and possible injury to the eyes. Understand the complete range of welding practices. How to weld an introduction to oxyacetylene welding and cutting.
Gap wirea wire used for correct spacing of butt joints. 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. Welding metals with oxy acetylene gas welding process in the downhand position. In addition to the purposes of welding connecting, gas welding can also be used as preheating, brazing, cutting, and hard facing. The combination of oxygen and acetylene produces a flame temperature over 6000 degrees fahrenheit making it ideal for welding and cutting. 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.
An introduction to welding how to oxyacetylene weld ideas. 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, 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. 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. 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. Materials oxygen cylinder, acetylene cylinder, regulator, valves, torch, welding tips, goggles, friction lighter, tip cleaner, personal safety equipment key points and supporting information. Oxygen acetylene welding, or oxy acetylene welding, is a process for joining metals that was introduced in 1903 by thomas wilson. Selecting, assembling and conducting preoperational checks of oxyacetylene gas welding equipment. Two of these techniques are used to weld flat joints and one is used for allposition welding. 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.
Fundamentals of gas cutting and welding cedengineering. Understanding of the oxy acetylene gas welding process. Dont smoke when welding or near welding and dont keep your lighter in your pocket it could explode. By definition, oxy acetylene welding is a process of. A welding torch is a vital device used to combine both the gases fuel or acetylene and oxygen to create a flame that is hot and strong enough to cut the metals. Oxyacetylene welding oaw the oxyacetylene welding process uses a combination of oxygen and acetylene gas to provide a high temperature flame. A filler rod is used to deposit additional metal as necessary to merge. It is the only gas mixture hot enough to melt steel.
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