The use of oxygen and acetylene as welding gases dates back to the 1890s. 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. Oxyfuel welding, heating and cutting concoa gas pressure. How to cut plate straight and smooth with the gas axe. Ppt oxyacetylene welding oaw powerpoint presentation. In addition to the purposes of welding connecting, gas welding can also be used as preheating, brazing, cutting, and hard facing. Equipments used for oxyacetylene welding metallurgy. Oxyacetylene welding oaw oaw is a manual process in which the welder must personally control the the torch movement and filler rod application. Wind up the hoses when finished shutting everything.
The combination of oxygen and acetylene produces a flame temperature over 6000 degrees fahrenheit making it ideal for welding and cutting. This heat is further used to melt interface surfaces of welding plates which are held together to form a joint. Pure oxygen, instead of air, is used to increase the. Welding and oxy acetylene cutting discusses safety and equipment topics for welding and cutting.
Gas welding and gas cutting basics linkedin slideshare. Oxy acetylene welding ofw fundamentals pressure settings. 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. Ppt gas welding oxyacetylene powerpoint presentation. The cutting action is supported by the pure oxygen stream. 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. The pressure of acetylene drawn from the generator is quite low, i. The term oxyfuel gas welding outfit refers to all the equipment needed to weld. Oxy fuel cutting ofc processes sever metal by utilizing the chemical reaction of oxygen with metal at elevated temperatures. Gas welding oxy acetylene a number of welding processes use a flame produced by burning a mixture of fuel gas and oxygen. Because this is achieved by oxidation, it is only effective. We supply the fuel tanks in a range of sizes so you neednt worry about finding something suitable for your commercial or industrial project. The required temperature is provided by the combustion of a fuel gas and oxygen minimum 99.
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. The magmate oxy acetylene gas equipment kit contains everything you need to get started, all at an affordable price. Unfortunately, gas welding isnt taught as regularly as it used to be. Careless use of oxy fuel torches has caused many fires. Oxyacetylene cutting safety in agriculture osha standard 1910. 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. Oxygenacetylene welding, or gas welding, is a process which relies on combustion of oxygen and acetylene. A free powerpoint ppt presentation displayed as a flash slide show on id. 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. Working principle gas welding is a fusion welding process in which welding is done by heating workpiece with flames obtained from oxy fuel gases. The lowpressure blow pipe or welding torch is used to carry the acetylene at low pressure 0. At the end of the articles you will find the download pdf button that you can easily download pdf. Oxy acetylene welding or cutting is also called torch or gas welding or cutting.
Gentec quick connectors with builtin check valves offer fast, reliable, safe and easy connection and disconnection of hoses, torches and regulators in welding, cutting or brazing applications. Oxyfuel welding and cutting the oxyfuel system is an auxiliary technique to welding developed since 1903 and used to date in many industrial applications. An excess of acetylene is easy to spot, but an excess of oxygen is difficult to spot except that it will cause molten metal to spark excessively. And unlike mig welding, which cant be used outdoors because of the shielding gas issue, oxy acetylene equipment can be used practically anywhere. Oxy acetylene welding equip setup gases industrial processes. Easy clickin and clickout design eliminates hand threading and ensures pressuretight connections in seconds. Injector type mixer the oxygen passing through the venturi 1, pulls the fuel gas available in chamber 2. Here at gas uk, we supply a huge range of oxy acetylene welding and cutting equipment to facilitate your welding needs. Gas welding oxy acetylene 1 gas welding oxy acetylene a number of welding processes use a flame produced by burning a mixture of fuel gas and oxygen. 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. The nice thing about the calcium carbide method of producing acetylene is that it can be done on almost any scale desired. Before going to gas welding let me discuss what is welding so, welding is defined as a fabrication process that joins materials, usually metals or. The chart ranges from 14 material thickness to oxy cutting up to 2 steel. 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.
Seminar on gas welding seminar report pdf download. Welding kits outfits kitting you out for new welding projects or replacing outdated equipment with allin, readytogo outfits. Withdrawal rates from acetylene cylinders are limited to about 17 of the cylinder contents per hour, e. This chart provides the approximate cost for cutting metal plate with oxy fuel torches on a cnc cutting machine. Fundamentals of gas cutting and welding ced engineering. Gas uk are suppliers of oxygen and acetylene fuel gases get yours here today. When mixed together in correct proportions within a handheld torch or blowpipe, a hot flame is produced with a temperature of about 3,200c. This is done by directing a flame from burning gas usually acetylene to melt metal at a joint to be. In recent times, many shops are now considering cnc plasma cutting in place of oxy fuel cutting in this material thickness range. 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. 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. Cutting with the oxy fuel process is just the opposite from of welding. For the proper use of your equipment, please contact your supplier or manufacturer something to think on every time you use the oxyacetylene equipment, if certain safety guidelines are not followed, it would be the same as handling live.
Its a shame, because oxy acetylene welding teaches you how to manipulate a. Download welding and oxy acetylene cutting ppt for free. 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. As a teenager in the 50s i burned cars apart in a wrecking yard with oxy propane, it works very well. Chapter 21 oxyacetylene cutting free download as powerpoint presentation. The process consists of preheating the metal to be cut to its ignition oxidation temperature, i. Oxy acetylene cutting safety ppt presentation summary. Oxyacetylene welding is a very common welding process. Hot work is any temporary or permanent operation that involves open flames or produces heat andor sparks. The oxyfuel process is the most widely applied industrial thermal cutting process because it can cut thicknesses from 0. This instruction should be read in conjunction with. When finished welding shut off the main valves, bleed. Oxyacetylene welding oaw the oxyacetylene welding process uses a combination of oxygen and acetylene gas to provide a high temperature flame. This includes, but is not limited to, brazing, cutting, grinding, soldering, torchapplied roofing, and welding.
Oxy acetylene welding and cutting equipment, online at gas uk. The preheating is done by oxy acetylene gas flame, which is supplied from surrounding openings of the cutting torch. Placed in tightlysealed cans, calcium carbide keeps. 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. Definition, equipment, flames, working, types, advantages, disadvantages, applications in detail note. This process can be done with or without help of filler material. To secure a neutral flame, always start with an excess of acetylene, then increase the flow of oxygen or decrease the flow of acetylene until the acetylene feather disappears from the center cone. Oxy fuel equipment is versatile, lending itself to welding, brazing, brazewelding, silver soldering, metal heating for bending and forming and oxy fuel cutting. Oxy acetylene propane cutting proactive gas safety training. Displaying welding and cutting safety powerpoint presentations oxy acetylene cutting safety ppt presentation summary. Displaying powerpoint presentation on welding and oxy acetylene cutting available to view or download. It is the only gas mixture hot enough to melt steel. Cutting heating brazing correct pressure setting charts by.
Cylinders contain oxygen and acetylene gas at extremely high pressure. Acetylene gas c2h2 is dissolved in acetone liquid and stored at 250 psi, in a specially designed cylinder. 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. The gas usually used is acetylene but other gases are also used. 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. The fuel gases are highquality gases which are best used for welding and cutting materials. 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.
Principles oxy gas processes are based on controlled combustion of fuel gas. 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. Follow the precautions in this safety section and those throughout this manual for your personal safety and the safety of people near the equipment. Separate cylinders and a hose pipe from each cylinder transports the gases to a torch.
Oxy acetylene cutting safety in agriculture osha standard 1910. Welding and oxy acetylene cutting powerpoint presentation presentation title. 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. Welding, cutting, and brazing safety oshacademy free. Oxy acetylene cutting safety occupational safety and. When this temperature is attained, a jet of high pressure oxygen from a central opening of the. Types of welding welding includes 60 or more process variations electric welding and oxy fuel gas welding welding cutting occurs at most businesses at some point welding hazards. Jun 05, 20 how to cut plate straight and smooth with the gas axe. Proper care of oxyacetylene cutting and welding equipment imca. Welding hazards firescaused by unsafe welding or cutting operations burns electric shock light radiation ultraviolet, infrared, and intense visible light air.
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. Acetylene gas virtually all the acetylene distributed for welding and cutting. Acetylene s most common uses are as welding gas and as a chemical feedstock for polyethylene plastics and acrylics. Vat heavy duty, type 5, welding and cutting set supplied in a durable metal toolbox and comprising quality components and are ideal for onsite applications.
I can explain the correct operating procedure for brazing, heating and cutting. Oxy acetylene torches have been used for many years for cutting, welding, brazing, and heating of metals. 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. If speed and convenience are your main priorities, our outfits are the ideal choice. For only cutting and heating propane will do the job and its safer than acetylene too. Oxy fuel cutting uses acetylene and oxygen to preheat metal to red hot and then uses pure oxygen to burn away the preheated metal. Safety in gas welding, cutting and similar processes. 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. In modern steelage the steelmakers cut iron and steel by oxyacetylene, oxyhydrogen, oxy propane, oxynatural gas cutting blowpipes easily, speedily, and cleanly.
Cutting of metals by means of flame has many advantages over other methods, specially when the metal is of irregular shape. 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. The chemical action of the oxyacetylene flame can be adjusted. Revised 601 this program is informational only and does not certify or qualify any persons in the use of oxyacetylene burning or welding. If the oxy welding cutting equipment is to be operated in a dangerous or hostile environment, the userclient is responsible for conducting an appropriate risk analysis and applying suitable controls to mitigate those additional risks. Oxygen acetylene welding, or gas welding, is a process which relies on combustion of oxygen and acetylene.
Two metals are joined by melting or fusing their adjoining surfaces in the process. Boc masterstart lpg kit gets you started with general oxy lpg cutting and brazing with the flexibility to add accessories specific to your requirements. Acetylene welding gas is supplied in an acetylene cylinder sizes that include e and g. A plus is that oxy propane is great for cutting steel as well.
Oxy fuel cutting is a chemical reaction between pure oxygen and steel to form iron oxide. Acetylene gas oxy acetylene bottles sizes acetylene. There were no concerns about the fuel detonating if mishandled either. The oxyacetylene process produces a high temperature flame, over 3000 degrees c, by the combustion of pure oxygen and acetylene. Knowledge and precautions can prevent fires and violent explosions. So gasolineair torches get to high temps as they have been used to melt metals. Gas welding oxy acetylene ppt video online download. Gas welding welding industrial processes free 30day. Gas welding is a type of liquid state welding process in which fuel gases burns to generate heat. This book will highlight the welding and cutting processes. In this process, mostly oxy acetylene gas is used as fuel gas. 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 different part of low presswelding torch is shown in fig. In addition, oxy fuel cutting is still widely used, both in heavy industry and light industrial and repair operations. The acetylene is carried through the torch and tip at low pressure by the suction force of the higher oxygen pressure passing through the small orifice of the injector nozzle. 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. 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. Acetylene acetyline sic is typically used with oxygen for oxy acetylene cylinders welding, cutting, brazing, flame hardening and more. 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 oxy fuel gas torch often called a blowpipe is a very powerful source of ignition. Proper care of oxyacetylene cutting and welding equipment. I can describe the safe startup, settings and shutdown of the oxyacetylene equipment.
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