Check valves and flashback arrestors are safety devices for protecting workers using oxyfuel cutting and welding equipment. Lighter than air, it gives the highest flame temperature in the primary flame and consumes the. The combined shade numbers of the lenses in the eyewear and helmet should equal the value shown in the tables below see 29 cfr 1915. Safety for oxyacetylene welding thompson rivers university.
Welding and cutting steel oxyacetylene and other methods. Completed inspect the torch handle and cutting attachment thoroughly. Comes with hoses, welding and cutting torches, goggles, tip cleaners and striker. This is the start of a fourpart series, which will give an overview of the most popular cutting and welding processes. The oxyacetylene process produces a high temperature flame, over 3000 degrees c, by the combustion of pure oxygen and acetylene. Pass a written test on safety and operation procedures on the oxyacetylene unit with a minimum of 100 accuracy. The initial cost of purchasing the equipment is less expensive than for other processes like plasma cutting.
In order to comfortably and safely see the flame when welding or cutting, welding goggles must be worn. Osha safety and health standards, 29 cfr 1910, available from u. We guarantee this product to be free from defects in materials and workmanship 90 days from the date of purchase. Oxygenacetylene welding, or gas welding, is a process which relies on combustion of oxygen and acetylene. Cutting air carbon arc cutting oxyacetylene cutting process name. Welding 5 psi acet5 psi oxy cutting 5 psi acet20 psi oxy. Oxyfuel oxyacetylene or ofw oxyfuel welding is a fusion welding process that uses a flame produced by gas containing oxygen and a gas fuel. 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. A welding torch is used in the joining of materials, whereas the cutting torch is used in the separation of materials. In modern steelage the steelmakers cut iron and steel by oxyacetylene, oxyhydrogen, oxy propane, oxynatural gas cutting blowpipes easily, speedily, and cleanly. 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. Acetylene pressure oxygen pressure metal tip size thickness victor cutting equipment. Pdf oxyfuel welding and cutting sewalem gezie academia.
The other equipments serves the same function as in case of oxyacetylene gas welding. Describe the applications of oxyacetylene welding in the pipefitting trade and the type of materials that are suitable for joining using this process identify and state the function of common items on oxyacetylene welding, brazing, cutting and heating equipment identify and describe the safety precautions to be observed when using. Site engineer transformer generator near the hot work area keep welding generator at least 5 meters away from hot work area. Safe operating procedures sop 15 oxy acetylene cutting. The chemical action of the oxyacetylene flame can be adjusted. Oxygen acetylene welding, or gas welding, is a process which relies on combustion of oxygen and acetylene. 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. A check valve is a device that is designed to prevent the unintentional backflow of gases. The company was formed in 2006 with the merger of harris calorific, inc. Accessory accessory processes oxy fuel welding and cutting. Oxyfuel oxyacetylene welding a guide to gas welding. Oxyacetylene cutting safety occupational safety and. This document contains general information about the topic discussed herein. Wear proper clothing and personal protective equipment ppe.
Gas welding is still used for side of metal, cut by oxygen propane cutting torch metalbased. Operation of oxyfuel torches involves oxygen and flammable gases under pressure, open flames, flying slag and hot metal. When mixed together in correct proportions within a handheld torch or blowpipe, a hot flame is produced with a temperature of about 3,200c. A flashback flame arrestor is a device that prevents the propagation of a flame upstream. Oxyfuel equipment is versatile, lending itself to welding, brazing, brazewelding, silver soldering, metal heating for bending and forming and oxyfuel cutting. 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. Guidelines are given on the principal health and safety considerations for oxyacetylene welding to ensure safe welding practices. Heres an oxyacetylene welding kit that handles a broad range of cutting, welding, and heating applications. Competencies given a functional oxyfuel gas unit, instruction and demonstration of use, each student will be able to. By varying the relative amounts of acetylene and oxygen, a welder can produce different flame atmospheres and temperatures as he requires. As mentioned in chapter 1, the oxygen and acetylene flame has been used in gas welding and cutting for many years. Welding and cutting, published by the american welding society, box 351040, miami, fl 335. In oxyfuel welding, a welding torch is used to weld met als.
The cutting torch see figure 512 below, like the welding torch, has a tube for oxygen and one for acetylene. It is by far the only fuel gas that contains 2 hydrogen and 2 carbon molecules. Oxy acetylene cutting equipment oxy acetylene cutting torch oxy acetylene torch styles. Oxy fuel equipment is versatile, lending itself to welding, brazing, braze welding, silver soldering, metal heating for bending and forming and oxy fuel cutting. Pdf welding and cutting steel oxyacetylene and other. Safety in gas welding, cutting and similar processes.
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. Even small leaks can cause a flash fire or explosion, particularly if they are leaking into a poorly ventilated room or confined space where. The harris products group is a world leader in metal working products used in the brazing, soldering, welding, cutting and gas distribution industries. 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. Acetylene produces the hottest flame temperature for oxy fuel cutting and welding the hotter temperature creates a quicker piercing of materials oxy acetylene can be used on sites with no power supply it is quite a versatile process and can be used to. The chemical action of the oxy acetylene flame can be adjusted. Eye protection against radiant energy during welding and cutting in shipyard employment of the lens in the helmet may be reduced. Fundamentals of gas cutting and welding ced engineering. 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 cutting is one of the most commonly used processes in welding, and for good reason. Cutting of metals by means of flame has many advantages over other methods, specially when the metal is of irregular shape.
It is an invaluable aid to industry as well as in schools and universities. This instruction should be read in conjunction with. Mediumduty oxyacetylene cutting and welding outfit 770 502. For a typical oxygas cutting outfit, also referred to as a cutting rig figure 41, you need. Welding, cutting, and brazing welding is a process that joins materials together by melting a metal work piece along with a filler metal to form a strong joint. Shows proper setup and operation of oxyacetylene cutting torch. The process is used in a variety of industrial, construction, hobby and art applications. However, it is still widely used for a variety of applications. The spark lighter is used to ignite the oxyacetylene mixture at the tip of cutting torch.
Fundamentals of gas cutting and welding cedengineering. Describe the equipment used in oxyacetylene welding and the proper procedures for setup and safe operation of the equipment. The oxyacetylene flame produces an intense bright light that causes discomfort and possible injury to the eyes. Oxyacetylene welding, commonly referred to as gas welding, is a process which relies on combustion of oxygen and acetylene. Do not open acetylene cylinder valves more than 1 turn 14 to is usually enough. In addition, there is a tube for high pressure oxygen, along with a cutting tip or nozzle. 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. Check for damage on valves, fittings and seating areas. Oxyacetylene cutting safety in agriculture osha standard 1910. This document is not an application manual and does not contain a complete statement of all factors pertaining to that topic. More hot tips always use an approved friction striker, never use matches or a cigarette lighter. In order to discuss the various aspects of welding, cutting and brazing safety, first we need to cover the basics in this first module.
When mixed together in correct proportions within a handheld torch or blowpipe, a relatively hot flame is. The equipment can be used for a wide range of processes, not just cutting. The oxyacetylene handbook is a basic handbook or manual on oxyacetylene welding and cutting and their related processes. 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 it has. In this video we will discuss about what is oxygen acetylene welding. The difference between acetylene vs lpg propane as a. Keep oxy acetylenelpg cylinders at least 5 meters away from hot work area.
Oxygen acetylene welding easily understand youtube. 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. Oxyfuel cutting is a chemical reaction between pure oxygen and steel to form iron oxide. The function of each type however is to apply heat to material via a flame created at the nozzle or the cutting tip. Fusion weldinga welding process that joins metals by heating them to be a melting point and allowing them to fuse or flow together. Open the valve on the acetylene cylinder no more than threefourths of a turn so it can be closed quickly in case of emergency. Gap wirea wire used for correct spacing of butt joints. Acetylene is the primary fuel for oxyfuel welding and is the fuel of choice for applications like cutting, welding, brazing, heating and gouging. Eye protection against radiant energy during welding and.
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