Download of oxy fuel cutting and welding worksheet answers see full template here. Equipments used for oxyacetylene welding metallurgy. Welding hazards firescaused by unsafe welding or cutting operations burns electric shock light radiation ultraviolet, infrared, and intense visible light air. 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 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. Objectives understand facts about oxygen and acetylene explain functions of. 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. Share copy and redistribute the material in any medium or format. Proper care of oxyacetylene cutting and welding equipment imca. Knowledge and precautions can prevent fires and violent explosions. Oxy fuel cutting and welding worksheet answers tutore. Oxyacetylene cutting and welding powerpoint ppt presentation. Cutting with the oxyfuel process is just the opposite from of welding.
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. Welding, cutting, and brazing safety oshacademy free online. The oxy acetylene handbook is a basic handbook or manual on oxy acetylene welding and cutting and their related processes. For example, using an oxygen hose to carry acetylene could cause a serious accident. Oxy acetylene propane cutting proactive gas safety. Flashbacks and backfires flashbacks are commonly caused by a reverse flow of oxygen into the fuel gas hose continue reading proper care of. Ppt gas welding oxyacetylene powerpoint presentation free. Cutting with the oxy fuel process is just the opposite from of welding. Oxygenacetylene welding, or gas welding, is a process which relies on combustion of oxygen and acetylene. Oxyacetylene is the typical combination used in gas welding and is generally chosen for general cutting and welding work including work to repair rips and tears in metal. 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.
Opening and closing procedure gas cutting equipment copper piping welding brazing objective on completion of this element you will be able to join pipes in the downhand position, by means of the recognised oxyacetylene silver soldering and copper joining methods. Two metals are joined by melting or fusing their adjoining surfaces in the process. Winner of the standing ovation award for best powerpoint templates from presentations magazine. Placed in tightlysealed cans, calcium carbide keeps. 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. The oxyacetylene process produces a high temperature flame, over 3000 degrees c, by the combustion of pure oxygen and acetylene. Careless use of oxyfuel torches has caused many fires. In addition, oxy fuel cutting is still widely used, both in heavy industry and light industrial and repair operations. 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. Hot work is any temporary or permanent operation that involves open flames or produces heat andor sparks. When burned with oxygen, acetylene produces a very hot flame, having a temperature between 5700f and 6300f. Ppt welding and cutting safety powerpoint presentation, free.
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. Welding and oxy acetylene cutting powerpoint presentation presentation title. Jun 05, 20 how to cut plate straight and smooth with the gas axe. Opening and closing procedures on gas cutting equipment. For welding the mild steel, open oxygen torch valve and adjust to neutral flame. Oxy acetylene cutting safety ppt presentation summary.
Theyll give your presentations a professional, memorable appearance the kind of sophisticated look that. 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. Each gas is contained in its own cylinder and combined through the use of separate hoses leading from regulators attached to the top of the cylinders. Cutting of metals by means of flame has many advantages over other methods, specially when the metal is of irregular shape. Oxy acetylene torches have been used for many years for cutting, welding, brazing, and heating of metals. This includes, but is not limited to, brazing, cutting, grinding, soldering, torchapplied roofing, and welding. How to cut plate straight and smooth with the gas axe. Apr 01, 2005 oxyacetylene welding and cutting electric, forge and thermit welding together with related methods and materials used in metal working and the oxygen process for removal of carbon language. Casey cutting into some steel with an oxyacetylene torch. Chart and diagram slides for powerpoint beautifully designed chart and diagram s for powerpoint with visually stunning graphics and animation effects. The different part of low presswelding torch is shown in fig.
The use of oxygen and acetylene as welding gases dates back to the 1890s. Acetylene chemical formula c2h2 is a fuel gas made up of carbon and hydrogen. Fundamentals of gas cutting and welding ced engineering. 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. In modern steelage the steelmakers cut iron and steel by oxyacetylene, oxyhydrogen, oxy propane, oxynatural gas cutting blowpipes easily, speedily, and cleanly. Oxyacetylene cutting systems basic set up safety and use. Oxyacetylene torches have been used for many years for cutting, welding, brazing, and heating of metals. 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. Oxy acetylene welding ofw fundamentals pressure settings.
Safety in gas welding, cutting and similar processes. Acetylene, argon, brazing, oxy acetylene cutting, oxy fuel, oxygen, propane, welding rebecca miller 201908t14. Welding and oxy acetylene cutting discusses safety and equipment topics for welding and cutting. This is done by directing a flame from burning gas usually acetylene to melt metal at a joint to be. Acetylene, argon, brazing, oxy acetylene cutting, oxyfuel, oxygen, propane, welding rebecca miller 201908t14. Y is red used to identify the acetylene and other fuelgas hose, green for oxygen hose, and black for inert gas and air hose. Oxyfuel welding and oxyfuel cutting are processes that use fuel gases and oxygen to weld or cut metals. Proper care of oxyacetylene cutting and welding equipment. 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. Oxyfuel welding and cutting the oxyfuel system is an auxiliary technique to welding developed since 1903 and used to date in many industrial applications. Fusion weldinga welding process that joins metals by heating them to be a melting point and allowing them to fuse or flow together. Here at gas uk, we supply a huge range of oxy acetylene welding and cutting equipment to facilitate your welding needs.
However, if it is used incorrectly, serious injury can occur to you and the equipment. 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. It is the only gas mixture hot enough to melt steel. 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. The chemical action of the oxyacetylene flame can be adjusted. It can be used for cutting steel, welding steel, brazing and for heating metal. 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. Oxy acetylene welding and cutting equipment, online at gas uk. Oxyacetylene welding is a very common welding process. Fundamentals of gas cutting and welding cedengineering. The nice thing about the calcium carbide method of producing acetylene is that it. Welding, cutting, and brazing module 16 hazards of welding operations fire. The nice thing about the calcium carbide method of producing acetylene is that it can be done on almost any scale desired.
If you need to cut durbar tread plate you may find it easier to maintain the consistency of the. In addition to the purposes of welding connecting, gas welding can also be used as preheating, brazing, cutting, and hard facing. Carburising flame iii oxidising flame b i heat is produced by an electrical arc formed between the welding electrode and the metal being welded. Oxyacetylene welding and cutting electric, forge and thermit welding together with related methods and materials used in metal working and the oxygen process for removal of carbon language. 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. Oxyacetylene cutting systems basic set up safety and use free download as powerpoint presentation. 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. Y are pressurereducing regulators used only for the gas and pressures for which they are intended. Worlds best powerpoint templates crystalgraphics offers more powerpoint templates than anyone else in the world, with over 4 million to choose from. Because this is achieved by oxidation, it is only effective. The oxyacetylene torch can be used for various tasks. Oxyacetylene cutting safety in agriculture osha standard 1910. 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. The oxyacetylene handbook is a basic handbook or manual on oxyacetylene welding and cutting and their related processes. Welding operations continued 2 y before a regulator is removed, is the valve closed and gas released from the regulator.
The lowpressure blow pipe or welding torch is used to carry the acetylene at low pressure 0. Our new crystalgraphics chart and diagram slides for powerpoint is a collection of over impressively designed datadriven chart and editable diagram s guaranteed to impress any audience. Worlds best powerpoint templates powerpoint ppt presentation. Acetylene gas virtually all the acetylene distributed for welding and cutting. It is an invaluable aid to industry as well as in schools and universities. Oxyfuel 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. Since oxidation of the metal is a vital part of the. Welding and oxyacetylene cutting discusses safety and equipment topics for welding and cutting. 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. Ppt welding, cutting, and brazing powerpoint presentation free. Oxyfuel cutting uses acetylene and oxygen to preheat metal to red hot and then uses pure oxygen to burn away the preheated metal. Acetylene gas is colorless, but has a distinct, easily recognized odor. 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.
Welding, cutting, and brazing safety oshacademy free. Oxyacetylene welding or cutting is also called torch or gas welding or cutting. Oxy acetylene is the typical combination used in gas welding and is generally chosen for general cutting and welding work including work to repair rips and tears in metal. Oxy acetylene propane cutting proactive gas safety training. I can describe the safe startup, settings and shutdown. 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. Ppt arc welding powerpoint presentation free to download. Safety training for oxyfuel proactive gas safety training. Oxy fuel cutting uses acetylene and oxygen to preheat metal to red hot and then uses pure oxygen to burn away the preheated metal.
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