Types of welding welding includes 60 or more process variations electric welding and oxyfuel gas welding weldingcutting occurs at most businesses at some point welding hazards. Flame cutting is used to make the edges of the work pieces and for sheet cutting films of metal from 1 to 12 millimeters thin, pipes, steel bars, and other ferrous. Here at spectrum welding supplies ltd we supply and stock a massive range of gas cutting equipment for oxyacetylene and oxypropane. Safety presentation oxy fuel gas welding and cutting equipment. Find powerpoint presentations and slides using the power of, find free presentations research about oxy acetylene ppt about 23 results 1.
Even small leaks can cause a flash fire or explosion, particularly if they are leaking into a poorly ventilated room or confined space where. Oxy fuel cutting uses acetylene and oxygen to preheat metal to red hot and then uses pure oxygen to burn away the preheated metal. Oxygenacetylene welding, or gas welding, is a process which relies on combustion of oxygen and acetylene. This book will highlight the welding and cutting processes. Flashbacks and backfires flashbacks are commonly caused by a reverse flow of oxygen into the fuel gas hose continue reading proper care of oxy acetylene cutting. 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. A plus is that oxy propane is great for cutting steel as well. The chemical action of the oxyacetylene flame can be adjusted. In this unit you will be introduced to oxy acetylene welding and the safety precautions required when using oxy acetylene equipment. Oxyacetylene cutting safety in agriculture osha standard 1910.
It is an invaluable aid to industry as well as in schools and universities. Acetylene gas virtually all the acetylene distributed for welding and cutting use is created by allowing calcium carbide a man made product to react with water. Oxy acetylene welding ofw fundamentals pressure settings. Oxy fuel cutting ofc is similar to ox fuel welding except that. Welding and oxy acetylene cutting discusses safety and equipment topics for welding and cutting. Fundamentals of gas cutting and welding ced engineering.
Oxy acetylene cutting safety in agriculture osha standard 1910. Gas welding oxy acetylene a number of welding processes use a flame produced by burning a mixture of fuel gas and oxygen. Since oxidation of the metal is a vital part of the. Support oxygen and acetylene cylinders in an upright position so they cannot be tipped over. Competency of trainers, quality of presentation and relevance. 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 not only an excellent method of joining thinner gauge metals, its also the best first step to understanding the fundamentals of welding that makes more modern processes like stick, tig, mig and flux core easier to learn. A common inside diameter of oxyfuel gas hose is 14 inch. Gas welding welding industrial processes free 30day. Cutting requirements are identified from drawings and specifications. Oxy fuel equipment is versatile, lending itself to welding, brazing, brazewelding, silver soldering, metal heating for bending and forming and oxy fuel cutting. In addition to the purposes of welding connecting, gas welding can also be used as preheating, brazing, cutting, and hard facing. As a teenager in the 50s i burned cars apart in a wrecking yard with oxy propane, it works very well.
In this process, mostly oxy acetylene gas is used as fuel gas. Ppt oxyacetylene welding oaw powerpoint presentation. Gas welding is a type of liquid state welding process in which fuel gases burns to generate heat. Safety in gas welding, cutting and similar processes page 5 of 11 fireexplosion caused by gas leaks acetylene, lpg and other fuel gases are highly flammable, and form explosive mixtures with air and oxygen. Oxyacetylene propane gases safety training course delivered at your location through a blend of. The covered electrodes of mild steel come in 4 sizes and are of tubular construction.
Never carry matches of gas filled lighters in your. Prevents the mixing of gases and removes the hazard of explosion. Pure oxygen, instead of air, is used to increase the. 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. Oxyfuel welding and oxyfuel cutting are processes that use fuel gases and oxygen to weld or cut metals. Occupational safety and health standards for the oil and gas industry. Hot work is any temporary or permanent operation that involves open flames or produces heat andor sparks. This heat is further used to melt interface surfaces of welding plates which are held together to form a joint. 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. Cylinder storage well ventilated room no open flame in the store 10 m distance from oxygen and acetylene cylinders no materials. For only cutting and heating propane will do the job and its safer than acetylene too. Experts with proven credentials and a high standing within the research fraternity have presented an indepth analysis of the subject matter, bringing to bear their unparalleled domain knowledge and vast research experience.
Unfortunately, gas welding isnt taught as regularly as it used to be. Oxyfuel gas cutting ofc is a group of oxygen cutting processes that use heat from an oxyfuel gas. The different part of low presswelding torch is shown in fig. Oxyacetylene welding oaw oaw is a manual process in which the welder must personally control the the torch movement and filler rod application. Oxy fuel cutting is a thermal cutting process that uses oxygen and fuel gas such as acetylene, propane, mapp, propylene and natural gas to cut through materials. Oxygen and acetylene use and safety virginia department of. In addition, oxy fuel cutting is still widely used, both in heavy industry and light industrial and repair operations. This process can be done with or without help of filler material. The term oxyfuel gas welding outfit refers to all the equipment needed to weld. Acetylene is used as a fuel gas for oxyacetylene welding, cutting, general localised heating, flame hardening, flame cleaning to remove rust from steel, spalling concrete, and other processes requiring a high temperature flame 3,160c when combusted in oxygen. Oxy acetylene torches have been used for many years for cutting, welding, brazing, and heating of metals. Oxyfuel gas equipment has many uses welding, cutting, heating, straightening, and descaling.
In case of a beveled cut an angled cut for weld preparation the cutting torch will be at an angle and the heat transfer to. However, processing speeds are typically lower below a 20 mm wall thickness range considering 3d profiling in the heavy steel industry. Displaying powerpoint presentation on oxyfuel cutting pcmac available to view or download. Workmen in charge of the oxygen or fuelgas supply equipment, including. 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. The oxyfuel process is the most widely applied industrial thermal cutting process because it can cut thicknesses from 0. The electric arc takes the place of the heating flame of the oxy acetylene cutter. Oxy fuel cutting is a time consuming process, especially cutting thick walled materials.
Safety in gas welding, cutting and similar processes. The combination of oxygen and acetylene produces a flame temperature over 6000 degrees fahrenheit making it ideal for welding and cutting. 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. Worlds best powerpoint templates crystalgraphics offers more powerpoint templates than anyone else in the world, with over 4 million to choose from. This means if a oxygen bottle is leaking, the gas will settle in low areas. 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. The equipment is versatile, easy to move and cheap. Work area is prepared to support efficient cutting with oxy lpg acetylene. Grantee materials by topic occupational safety and.
If you need to cut durbar tread plate you may find it easier to maintain the consistency of the cut if you face the ridged side down and cut. Heres an oxy acetylene welding kit that handles a broad range of cutting, welding, and heating applications. Winner of the standing ovation award for best powerpoint templates from presentations magazine. Its a shame, because oxy acetylene welding teaches you how to manipulate.
Gas welding and gas cutting basics linkedin slideshare. Comes with hoses, welding and cutting torches, goggles, tip cleaners and striker. Acetylene acetylene is a flammable fuel gas composed of carbon and hydrogen having the chemical formula. Follow the precautions in this safety section and those throughout this manual for your personal safety and the safety of people near the equipment. Safety in gas welding, cutting and similar processes hse. This course is suitable for all those working with oxy acetylene or oxy propane gases to carry out the cutting of steel and other metals. Safety training for acetylene proactive gas safety training. Equipments used for oxyacetylene welding metallurgy. The pressure of acetylene drawn from the generator is quite low, i. A member has noted a number of incidents resulting in fires caused by perished hoses and flashbacks involving oxyacetylene cutting equipment, and has shared the following information with imca for use as part of a safety flash. 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. Proper care of oxyacetylene cutting and welding equipment.
It is the only gas mixture hot enough to melt steel. Chapter 21 oxyacetylene cutting free download as powerpoint presentation. Oxy acetylene cutting safety ppt presentation summary. Oxy acetylene propane cutting proactive gas safety training. I can explain the correct operating procedure for brazing, heating and cutting. Open the valve on the acetylene cylinder no more than threefourths of a turn so it can be closed quickly in case of emergency. The cylinders should be fitted with regulators, to control the pressure and flow of gases.
On this episode he goes over the set up and operation of. Two metals are joined by melting or fusing their adjoining surfaces in the process. Displaying welding and cutting safety powerpoint presentations oxy acetylene cutting safety ppt presentation summary. May 03, 2016 casey cutting into some steel with an oxyacetylene torch. Oxy acetylene welding or cutting is also called torch or gas welding or cutting.
Occupational safety and health hazard awareness training for the construction, oil and gas, and landscaping industries. A member has noted a number of incidents resulting in fires caused by perished hoses and flashbacks involving oxy acetylene cutting equipment, and has shared the following information with imca for use as part of a safety flash. Range of gas cutting equipment from cutting torches to gauges and nozzles,kits also available at great low price and quality. The oxyacetylene process produces a high temperature flame, over 3000 degrees c, by the combustion of pure oxygen and acetylene. Module 2 thermal processes unit 1 introduction to thermal processes and safety unit 2 introduction to oxy acetylene welding unit 3. The oxy acetylene handbook is a basic handbook or manual on oxy acetylene welding and cutting and their related processes. Ppt oxyacetylene welding powerpoint presentation free to download id. It comprises oxygen and acetylene gases stored under pressure in steel cylinders.
Welding hazards firescaused by unsafe welding or cutting operations burns electric shock light radiation ultraviolet, infrared, and intense visible light air. Seminar on gas welding seminar report pdf download. Proper care of oxyacetylene cutting and welding equipment imca. So gasolineair torches get to high temps as they have been used to melt metals. Separate cylinders and a hose pipe from each cylinder transports the gases to a torch.
How to cut plate straight and smooth with the gas axe. The lowpressure blow pipe or welding torch is used to carry the acetylene at low pressure 0. 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. Flashbacks and backfires flashbacks are commonly caused by a reverse flow of oxygen into the fuel gas hose continue reading proper care of oxyacetylene cutting. How to operate an oxyacetylene cutting torch snapguide. Oxy acetylene welding and cutting equipment, online at gas uk. Acetylene, argon, brazing, oxy acetylene cutting, oxy fuel, oxygen, propane, welding rebecca miller 201908t14. Oxy fuel welding commonly called oxyacetylene welding, oxy welding, or gas welding in the united states and oxy fuel cutting are processes that use fuel gases or liquid fuels such as gasoline and oxygen to weld or cut metals.
Because this is achieved by oxidation, it is only effective. Fully integrated oxyfuel cutting system with cutting torch. The gas usually used is acetylene but other gases are also used. Safety precautions are undertaken prior to welding in compliance with the job specification and standards. In this process, oxygen gas and electrodes are used to cut roughly mild steel, lowalloy steel, stainless steel, copper, bronze, brass, monel, metal etc. View and download powerpoint presentations on oxy acetylene ppt. Careless use of oxyfuel torches has caused many fires. Here at gas uk, we supply a huge range of oxy acetylene welding and cutting equipment to facilitate your welding needs. There were no concerns about the fuel detonating if mishandled either. The nice thing about the calcium carbide method of producing acetylene is that it can be done on almost any scale desired.
Jan 18, 2017 as the problem seems to be with the oxy bottle other fuel gas suggestions to work with oxy dont seem to be germaine. As the problem seems to be with the oxy bottle other fuel gas suggestions to work with oxy dont seem to be germaine. The chemical action of the oxyacetylene flame can be adjusted by changing the ratio of the volume of oxygen to acetylene, using the valves on the torch or. On a previous powernation extra, tommy showed us how to prep and set up bottles and regulators in order to use a cutitng torch. Oxy acetylene propane cutting proactive gas safety. Cutting with the oxy fuel process is just the opposite from of welding. Knowledge and precautions can prevent fires and violent explosions. 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.
Working principle gas welding is a fusion welding process in which welding is done by heating workpiece with flames obtained from oxy fuel gases. Ppt oxyacetylene welding powerpoint presentation free. Where a liquid oxygen system is to be used to supply gaseous oxygen for welding or cutting and the system has a storage capacity of more. Flame ignition, height sensing and lifterall in one package. Safety training for oxyfuel proactive gas safety training. The use of oxygen and acetylene as welding gases dates back to the 1890s. This includes, but is not limited to, brazing, cutting, grinding, soldering, torchapplied roofing, and welding. Unfollow oxy acetylene welding kit to stop getting updates on your ebay feed. What is oxygen remember, oxygen is not air there is approximately 21% oxygen in normal air oxygen is found naturally in the atmosphere it is produced industrially by distilling air below its freezing point pure oxygen does not burn or explode oxygen is an accelerant, it causes every thing it comes in contact with to burn hotter and faster air has a vapor.
Cutting of metals by means of flame has many advantages over other methods, specially when the metal is of irregular shape. For welding the mild steel, open oxygen torch valve and adjust to neutral flame. 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. Cylinders contain oxygen and acetylene gas at extremely high pressure. First close the acetylene knob all the way until the flame is extinguished. Oxy fuel cutting is a chemical reaction between pure oxygen and steel to form iron oxide. Mar 05, 2014 acetylene gas virtually all the acetylene distributed for welding and cutting use is created by allowing calcium carbide a man made product to react with water.
Oxyacetylene welding is a very common welding process. The shortest distance through the material is a cut perpendicular to the wall. Ppt oxyfuel gas welding powerpoint presentation free. Equipment oxy acetylene equipment is portable and easy to use. Gas welding oxy acetylene ppt video online download. Theyll give your presentations a professional, memorable appearance the kind of sophisticated look that todays audiences expect. Medium duty oxy acetylene fuel gas cutting attachment, style cc509, stainless steel tube, brass handle cw5194. Solid brass torch handle, cutting attachment and regulators. Safety in gas welding, cutting and similar processes page 3 of 11 preventing fire from heat, sparks, molten metal or direct contact with flame the flame from an oxyfuel gas torch often called a blowpipe is a very powerful source of ignition. I can describe the safe startup, settings and shutdown of the oxyacetylene equipment. Oxyfuel welding and cutting the oxyfuel system is an auxiliary technique to welding developed since 1903 and used to date in many industrial applications. This is done by directing a flame from burning gas usually acetylene to melt metal at a joint to be.