Acetylene is colorless, but has a distinctive odor that can be easily detected. Oxy acetylene is wellknown for its flexibility, and is suited for various machining operations other welding, such as brazing, cutting, etc. Preparation of the edges will be done by flame cutting, shearing, flame grooving, machining, chipping, or grinding. Apr 16, 2017 gas welding is a type of liquid state welding process in which fuel gases burns to generate heat. In addition, oxy fuel cutting is still widely used, both in heavy. But the most common of these is oxygen and acetylene. Gap wirea wire used for correct spacing of butt joints. Gas hoses to be checked for any damage before starting welding do not use if any suspicious damage is evident ensure flint lighter is ready to use before turning on gas turn on acetylene gas first and light it before turning oxygen on refer to operating instructions gas hoses to be well clear of weld splatter at all times. 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 company was formed in 2006 with the merger of harris calorific, inc. Oxy fuel equipment is versatile, lending itself to welding, brazing, braze welding, silver soldering, metal heating for bending and forming and oxy fuel cutting. Gas cutting and welding kits from boc are a complete and convenient solution to get you started on your welding and cutting applications.
Many combinations of gases are used in gas welding. However, the oxy hydrogen flame is virtually useless for welding steel. In modern steelage the steelmakers cut iron and steel by oxy acetylene, oxy hydrogen, oxy propane, oxy natural gas cutting blowpipes easily, speedily, and cleanly. In this unit you will be introduced to oxy fuel cutting and the safety precautions required when using oxy fuel cutting equipment. Cutting of metals by means of flame has many advantages over other methods, specially when the metal is of irregular shape. Tc 9237 chapter 5 welding and cutting equipment section i. Purge the oxygen gas line and check for constant gas flow. This process can be done with or without help of filler material. Setup and shutdown procedure for oxy fuel cutting torch. In this welding process, mostly oxy acetylene gas is used as a working fuel gas. Read online oxy acetylene welding manual and download oxy acetylene welding manual book full in pdf formats. A high temperature flame 3200c can be produced by this method.
Fundamentals of gas cutting and welding cedengineering. If the oxy welding cutting equipment is to be operated in a dangerous or hostile environment, the userclient. Basic gas welding and cutting department of training and. May, 2020 for oxy gas welding on the plate more than 14 of an inch thick, bevel the edges at an angle of 30 degrees to 45 degrees, making the groove included angle from 60 degrees to 90 degrees. The oxy acetylene welding process combines oxygen and acetylene gas to provide a high temperature flame for. Carbonburning 5 glossary 145 lectures 149 index 167 iz. At the end of the articles you will find the download pdf button that you can easily download pdf.
The maximum pressure outside the cylinder is restricted to 150 kpa. Acetylene is a fuel gas composed of carbon and hydrogen. Competencies given a functional oxy fuel gas unit, instruction and demonstration of use, each student will be able to. The harris products group is a world leader in metal working products used in the brazing, soldering, welding, cutting and gas distribution industries.
Feb 10, 2021 oxy acetylene welding uses a highheat, hightemperature flame that is produced by burning a fuel gas most commonly acetylene mixed with pure oxygen. It is so widely used that sometimes people forget about the dangers. Comet blowpipes cutting attachments and consumables. Boc masterstart weld is a quality flame welding gas kit for general purpose oxy acetylene welding. C 7h 2, generated by the action of calcium carbide, a gray stonelike substance, and water in a generating unit. Aug 02, 2018 working principle gas welding is a fusion welding process in which welding is done by heating workpiece with flames obtained from oxy fuel gases. Read download oxy acetylene welding manual pdf pdf download. Large flutes on hand tightening nut for a better grip when wearing welding gloves. Do not smoke or allow anyone else to smoke near the oxy fuel gas welder. Important safeguards basic safety precautions should always be followed to reduce the risk of fire and personal injury, including the following. Then purge the acetylene gas line and check for constant gas flow.
Turn the acetylene knob on the cutting torch about a quarter of a turn and light the acetylene. This heat is used to melt interface surfaces of welding plates which are held together to form a joint. In this unit you will be introduced to oxy acetylene welding and the safety precautions required when using oxy acetylene equipment. Oxy fuel equipment is versatile, lending itself to welding, brazing, braze welding, silver soldering, metal heating for bending and forming and oxy. Oxyacetylene welding school of the art institute of chicago. This combined with a neutral welding atmosphere and suitable filler material allows a skilled operator to weld most metals. The preheat flame is composed of fuel gas and oxygen at a proper mixture ratio to produce maximum flame temperature for greatest heating efficiency. In this process, mostly oxy acetylene gas is used as fuel gas. Module 2 thermal processes unit 1 introduction to thermal processes and safety unit 2 introduction to oxy acetylene welding unit 3 manual metal arc welding unit 5 tungsten active gas shielded welding unit 4. Portable tote oxyacetylene cutting and welding outfit 770500. Module 2 thermal processes unit 1 introduction to thermal processes and safety unit 2 introduction to oxy acetylene welding unit 3 manual. This heat is further used to melt interface surfaces of welding plates which are held together to form a joint.
Introduction to oxy acetylene welding, unit 3 manual metal arc welding, unit 4. Fundamentals of gas cutting and welding ced engineering. Use only acetylene or propane gas and oxygen with this equipment. Pdf oxyacetylene handbook by linde air products company. This means if acetylene reaches 30 psi in a free state, it can explode by itself without a spark or flame being present. Oxyfuel oxyacetylene welding a guide to gas welding. Acetylene is the hottest fuel gas when combined with oxygen. Pass a written test on safety and operation procedures on the oxy acetylene.
However, the oxy hydrogen flame is virtually useless for welding. 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. 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. Acetylene gas can also condense and drip off the torch, causing a fire risk.
Gas welding is one of the oldest and most versatile welding processes, but in recent years it has become less popular in industrial applications. Never perform welding, cutting, and heating operations on a container that has. Pdf oxyfuel welding and cutting sewalem gezie academia. Gas welding utilizes the heat produced by a gas flame to melt the filler metal, if used, and the base metal, thereby creating a weld. Do not withdraw acetylene from a cylinder at a rate exceeding 17 of the cylinder capacity per hour. Read and understand this entire manual and your employers safety practices before installing. The oxy acetylene flame is made by mixing oxygen and acetylene gases in a special welding torch or blowpipe, producing, when burned, a heat of 6,300 degrees, which is more than twice the melting temperature of the common metals. Read all instruction, save these instruction safety, setup. Safe operating procedures sop 15 oxy acetylene cutting. 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 316 thick or more. This diverse range includes hoses, flashback arrestors, thermic lancing equipment, manifold systems.
The equipment is versatile, easy to move and cheap. 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. It is acceptable to use acetylene regulators that indicate a static pressure up to 22 psi 151 kpa. Open the acetylene blowpipe handpiece valve very slightly and light with a flint lighter only. Instruction manual for uniflame gas welding, flame cutting and gouging kit chart 1 property oxygen acetylene lp gas o2 c2h2 c3h8 note 1 density relative to air 1. A complete, practical manual for gas welding and cutting practice hardcover january 1, by ted b. In addition, oxy fuel cutting is still widely used, both in heavy industry and light industrial and repair operations. Follow the precautions in this safety section and those throughout this manual for your personal safety and the safety of people near the equipment.
Partonealuminumwelding 109 parttwoaluminumwelding 1 partthreealuminumwelding 118 x. Follow the manufacturers recommendations for the correct operating pressures for the metal being welded and for the tip size being used. 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. Wear proper clothing and personal protective equipment ppe. Oxy acetylene cutting safety in agriculture osha standard 1910. February 2015 issue 2 pg 2 of 2 the instructions recommended within this document apply to normal risk conditions. 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. In the right applications, this makes acetylene ideal for welding different steel materials. Fusion welding a welding process that joins metals by heating them to be a melting point and allowing them to fuse or flow together. Oxygen and acetylene together in a flame provide the heat necessary to melt most metals.
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 unit 3 manual metal arc welding unit 5 tungsten active gas shielded welding unit 4 metal active gas welding unit 6 oxy fuel cutting unit 7 plasma arc cutting. Buy your welding and cutting kits online from boc today. Keep torch flame or sparks away from cylinder, regulator, and gas hose. The base material is melted with the filler rod using a flame from the combination of oxy fuel gas through the tip of the welding torch. 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. Module 2 unit 6 industrial insulation phase 2 2 oxy fuel cutting revision 2. Mediumduty oxyacetylene cutting and welding outfit 770 502. Oxyacetylene welding, commonly referred to as gas welding, is a process which relies on combustion of oxygen and acetylene. Oxy fuel gas equipment has many uses welding, cutting, heating, straightening, and descaling. However, it is still widely used for a variety of applications. Safety in gas welding, cutting and similar processes. Pass a written test on safety and operation procedures on the oxy acetylene unit with a minimum of 100 accuracy. Institute of chicago by providing instruction and technical assistance to students.
The chemical action of the oxy acetylene flame can be adjusted. Never perform welding, cutting, and heating operations on a container that has held toxic or combustible liquids or vapors. Check oxy fuel system for leaks with an approved leak detection solution or leak detector. Many people are injured each year by the incorrect or careless use of oxy fuel gas equipment. Gas welding and steel flame cutting basic gas welding procedures gas welding.
In these process, a mixture in proper proportion of such as acetylene, liquefied petroleum, methyl acetylene propadene, natural gas and hydrogen with oxygen are burnt to get flame. This process can be done with or without the help of filler material. Oxyfuel welding, heating and cutting concoa gas pressure. Migmag welding 30 flux cored electrodes 33 tig welding 34 oxy fuel gas cutting 37. Oxy acetylene welding the process of oxy acetylene welding can be used for almost all metals and alloys for engineering purposes. Unit 1 focuses on introduction to thermal process and safety, unit 2. This flame, while being of intense heat, is of very small size. Jul 21, 2020 oxy acetylene weldors handbook 7th edition and a great selection of related books, art and collectibles available now at the oxy acetylene weldors handbook.
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