Socalled oxyfuel welding supplanted the relatively ancient forge welding, which involves heating two pieces of metal, then hammering them together. 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. Introduction fuel gases are mostly hydrocarbon based and each has its own unique properties. Oxy acetylene welding leaving certificate engineering notes. Provides instructions on the use of the equipment both prior to and during operation. The heat from the torch allows for the melting and mixing of the base metal and filler metal to form a solid weld.
Oxy acetylene welding oxy acetylene, commonly known as oxy fuel, is one of the. This is a processoriented training program and thus also great for crosstraining. Oxygen acetylene welding, or gas welding, is a process which relies on combustion of oxygen and acetylene. 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 oxy acetylene silver soldering and copper joining methods. Setup and shutdown procedure for oxy fuel cutting torch a handout containing the highlights of the video titled setup and shutdown procedure for oxy fuel welding. In order to comfortably and safely see the flame when welding or cutting, welding goggles must be worn. Oxy acetylene welding plant high pressure system the term oxy acetylene welding plant refers to the basic equipment needed to weld. Supply system or due to the hot slag resulted from the. Lighting, adjusting and shutting down an oxygenacetylene torch is easy especially when following the proper procedures. The chemical action of the oxy acetylene flame can be adjusted. Welding part 1 oxyacetylene welding collision blast.
Oxyacetylene welding, commonly referred to as gas welding, is a process which relies on combustion of oxygen and acetylene. Welding part 1 oxyacetylene welding oxyacetylene welding we use oxyacetylene for brazing in the collision repair industry, but, it is not really used for cutting much in the automotive industry, as it create too much heat and can warp or ruin todays metals. However, if it is used incorrectly, serious injury can occur to you and the equipment. Open the valve on the acetylene cylinder no more than threefourths of a turn so it can be closed quickly in case of emergency. Setting up the oxyacetylene equipment at techshop menlo park. A mixture of oxygen and acetylene, burns as an intense focussed flame, at approximately 3,500 d. In oxyacetylene welding, oxygen and acetylene gas are combined in a torch handle to produce a flame that burns at over 6000 degrees fahrenheit.
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. Oxygenacetylene welding, or gas welding, is a process which relies on. Oxy fuel gas cutting and welding operation of oxy fuel torches involves oxygen and flammable gases under pressure, open flames, flying slag and hot. Nov 18, 20 oxyacetylene welding also known as oxyacetylene welding uses an oxyfuel gas flame can be applied with or without pressure can be applied with or without the use of filler materials 5. There is very important information regarding the set up of the oxy welding equipment discussed in the oxy welding sbu. Oxyfuel equipment is versatile, lending itself to welding, brazing, brazewelding, silver soldering, metal heating for bending and forming and oxyfuel cutting. The oxyacetylene flame produces an intense bright light that causes discomfort and possible injury to the eyes. Safety and emergency procedures recommends the use of a flashback arrestor on. The accessibility report for this material can be found in the program support materials collection. Oxyacetylene, commonly known as oxyfuel, is one of the oldest welding processes, though in recent years, it has become less popular in industrial applications. This instructable is only to guide you during your first setup of the rig. 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.
The oxyacetylene process produces a high temperature flame, over 3000 degrees c, by the combustion of pure oxygen and acetylene. The popular gas combinations are oxy hydrogen mixture, oxygen acetylene, etc. The equipment is cheaper than most other types of welding rigs e. Setup and shutdown procedure for oxyfuel cutting torch. Oxyacetylene welding by matt scott introduction oaw is a welding process that heats the base metal with a controlled mixture of acetylene and oxygen gas. Oxyacetylene is one of the oldest and most universally used welding processes. Download oxyacetylene welding and cutting pdf file size. Equipment, flames, working, advantage, applications. Acetylene pressures are for tips with light preheating flames for use on clean plate. Oxygenacetylene welding, or gas welding, is a process which relies on combustion of oxygen and acetylene. Oxyacetylene welding oaw the oxyacetylene welding process uses a combination of oxygen and acetylene gas to provide a high temperature flame.
Oxyfuel welding, heating and cutting process manual installation and operation instructions before installing or operating, read and comply with these instructions controls corporation of america 1501 harpers road virginia beach, va 23454 to order call 18002250473 or 7574228330 fax 7574223125 april 2001 supersedes. Oxyacetylene oa welding is one of the many types of welding supported by the dp metals shop. This includes, but is not limited to, brazing, cutting, grinding, soldering, torchapplied roofing, and welding. Competencies given a functional oxy fuel gas unit, instruction and demonstration of use, each student will be able to.
The spark lighter is used to ignite the oxyacetylene mixture at the tip of cutting torch. This module will introduce you to the oxyacetylene welding oaw and cutting process. The purpose of the welding handbook for maritime welders is to provide guidance in modern welding and related processes and to provide the welder with a source of practical information on the right solution to specific onboard welding problems. Oxyfuel welding commonly called oxyacetylene welding, oxy welding, or gas welding in the u. In gas welding and flame cutting, a fuel gas is mixed with oxygen or air in a blowpipe to. Hot work procedures and permit policy hot work is any temporary or permanent operation that involves open flames or produces heat andor sparks. A manual on oxyacetylene welding and cutting procedures second edition linde company on. This process can be done with or without help of filler material. In fusion welding, a heat source melts the metal to form a bridge between the components. Experience gained from user contact and welding training of crewmembers showed that.
Standard operating procedure sop acetylene and oxygen safe. If a cylinder is involved in fire, the risk of explosion can last for up to 24 hours after the fire has been extinguished. Ten years ago the oxyacetylene method of welding and cut ting metals. Eye protection against radiant energy during welding and. Oxy fuel equipment is versatile, lending itself to welding, brazing, braze welding, silver soldering, metal heating for bending and forming and oxy fuel cutting.
Many people prefer to read offline or to print out text and read from the real printed page. Others want to carry documents around with them on their mobile phones and read while they are on th. Fundamentals of gas cutting and welding cedengineering. Gas flame the molten metal must be protected from the atmosphere absorption of. Working safely with acetylene page 1 of 5 introduction this leaflet provides guidance on the fire and explosion hazards of acetylene. Oxyfuel oxyacetylene welding a guide to gas welding. Setup and shutdown procedure for oxy fuel cutting torch. 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.
In addition to the purposes of welding connecting, gas welding can also be used as preheating, brazing, cutting and hard facing. Oxy acetylene welding ofw fundamentals pressure settings. The leaflet does not cover fixed installations where acetylene is used see. In this process, mostly oxy acetylene gas is used as fuel gas. Safer use of acetylene every year, fire and rescue services attend hundreds of fires and incidents involving acetylene cylinders.
One of the most commonly used applications of acetylene gas is oxyacetylene welding, oxy welding, or gas welding. The oxyacetylene welding process uses a combination of oxygen and acetylene gas in the approved ratio to provide a. Welding oxyacetylene sop standard operating procedure. Gas welding equipment acetylene manifold systems for welding, cutting and allied processes general requirements. French engineers edmond fouche and charles picard became the first to develop oxygenacetylene welding in 1903.
In this process, mostly oxyacetylene gas is used as fuel gas. This heat is further used to melt interface surfaces of welding plates which are held together to form a joint. Video an introduction to gas welding oxyacetylene oxyacetylene gas welding is commonly used to permanently join mild steel. In 1903 edmond and charles picard discover this welding type. While welding, the pipes are rotated constantly so as to weld the seam in the horizontal position only. A comprehensive treatise on the practice of welding cast iron, malleable iron, steel, copper, brass, bronze, and aluminum by the oxy acetylene methods, together with concise information on the equipment required for both welding and cutting by this process.
When using an oxygenfuel gas process to perform welding or cutting, the. This is a special welding technique used for butt welding of steel pipes. 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. The extremely high heat depends on the mixture of two types of gaseous substances, oxygen and acetylene. Gas welding 7 although the oxyacetylene process has been introduced long time ago it. For detailed information about how to achieve better cut quality with oxyfuel cutting, download the free pdf file below. The oxyacetylene torch is a safe tool if used properly. Gas welding is a type of liquid state welding process, in which fuel gas burns to.
You have perhaps heard of soldering, which also involves binding metals together via heating. Safety for oxyacetylene welding thompson rivers university. It can be used for cutting steel, welding steel, brazing and for heating metal. This welding oxyacetylene standard operating procedure sop provides a way for your business to outline stepbystep safe processes when welding oxyacetylene. Welding principles and procedures course ntt training. A mixture of oxygen and acetylene, burns as an intense focussed flame, at approximately 3,500 degrees centigrade. Use an approved oilfree leak detection fluid or leak detec tor to locate possible leaks. The choice of a fuel gas is based on its ability to burn in air or oxygen and will be dependant on the specific. Opening and closing procedures on gas cutting equipment. The chemical action of the oxyacetylene flame can be adjusted. The oxygen supports higher combustion, the acetylene is the fuel for the combustion. This is userfriendly illustrated guidance that covers a range of topics including training and qualifications, fire and explosion prevention, local exhaust ventilation, and noise and vibration. Oxyacetylene welding also known as oxyacetylene welding uses an oxyfuel gas flame can be applied with or without pressure can be applied with or without the use of filler materials 5.
In oxy fuel gaswelding processes, the combustion takes place in two stages. Cutting with the oxyfuel process is just the opposite from of welding. In the case of soldering, however, only the metal used as the junction is heated, while the joined metals are not. Oxyfuel gas cutting and welding operation of oxyfuel torches involves oxygen and flammable gases under pressure, open flames, flying slag and hot. When opening tank valves, always open valves slowly so pressure on regulators is. Oxyacetylene cutting is also just as easy to learn and provides a means to cut through very thick materials. At the end of the articles you will find the download pdf button that you.
Always have the spindle key in the acetylene cylinder valve. Before use visual checklist operators should always follow company approved procedures. There is also a workplace assessment tool and a permit to work form. Safer use of acetylene kent fire and rescue service. In general, it is designed for welding operators, technicians, and supervisors looking to gain a better understanding of welding repair. Setup and shutdown procedure for oxyfuel cutting torch a handout containing the highlights of the video titled setup and shutdown procedure for oxyfuel welding. Oaw is one of the easiest forms of welding to learn and the equipment is low cost. 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 as acetylene is highly explosive at a pressure more than 200 kpa, hence it is stored in a cylinder filled with 80 to 85% porous material such as calcium silicate and then filled with acetone which. Health and safety in welding pdf 564 kb welding health and safety assessment. Fundamentals of gas cutting and welding ced engineering. It is for people who use acetylene for welding, cutting and similar processes. A comprehensive treatise on the practice of welding cast iron, malleable iron, steel, copper, brass, bronze, and aluminum by the oxyacetylene methods, together with concise information on the equipment required for both welding and cutting by this process. How to properly light, adjust and shut down an oxyacetylene torch harris products group.
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. Jan 25, 2017 oxy acetylene welding is a very common welding process that dates back to 1890s, wherein oxygen and acetylene are used as the two major welding gases. Pass a written test on safety and operation procedures on the oxy acetylene unit with a minimum of 100 accuracy. The other equipments serves the same function as in case of oxyacetylene gas welding. Gas welding is a type of liquid state welding process in which fuel gases burns to generate heat. This is one of the most important types of welding process commonly called as oxyacetylene or oxyfuel welding. A handout containing the highlights of the video titled setup and shutdown procedure for oxyfuel cutting torch. Repeat this procedure every time the equipment is set up or a cylinder is changed. The unique feature of this process is that it uses fuel gases such as hydrogen, natural gas, methane and oxygen to fuse and cut metal pieces. Portable tote oxyacetylene cutting and welding outfit. Oxygen acetylene welding, or just oxy acetylene welding, is a famed example of the welding process. Download gas welding process pdf at the end of the article.
When a worker wears eyewear equipped with filter lenses under a welding helmet, the shade number eye protection against radiant energy during welding and cutting in shipyard employment of the lens in the helmet may be reduced. Oxyacetylene welding is simple in concept two pieces of metal are brought together, and the touching edges are melted by the flame with or without the addition of filler rod. In oxy acetylene welding, oxygen and acetylene gas are combined in a torch handle to produce a flame that burns at over 6000 degrees fahrenheit. Apr 16, 2017 gas welding is a type of liquid state welding process in which fuel gases burns to generate heat. Oxy acetylene is one of the oldest and most universally used welding processes. Air products welders handbook fusion welding the most widely used welding processes rely on fusion of the components at the joint line. Setting up the oxyacetylene equipment at techshop menlo. Guidelines are given on the principal health and safety considerations for oxyacetylene welding to ensure safe welding practices.