Safety in gas welding, cutting and similar processes hse. First close the acetylene knob all the way until the flame is extinguished. Oxygasoline is primarily used for cutting heavy stuff. 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.
Welcome to a better way of cutting, welding, brazing and heating with boc gas equipment. The tool you use for oxyacetylene cutting is called a. Flame cutting is used to make the edges of the work pieces and for sheet cutting films of metal from 1. Oxy gasoline is primarily used for cutting heavy stuff. If the oxy welding cutting equipment is to be operated in a dangerous or hostile environment, the userclient. 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. There were no concerns about the fuel detonating if mishandled either. Storage area means where more than 1 bottle of each are stored. Oxyfuel gas equipment has many uses welding, cutting, heating.
The separation is done by heating the surface of the material over melting temperature and burning it through the supply of additional 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. Ppt oxyacetylene welding powerpoint presentation free to. 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. Page 3 of 3 tx55 profile cutter what is the tx55 designed to do. Fundamentals of gas cutting and welding ced engineering. Oxyfuel welding and cutting the oxyfuel system is an auxiliary technique to welding developed since 1903 and used to date in many industrial applications. 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. Oxyacetylene cutting is a gas flame cutting process to separate metal sheets. At this point, the cutting oxygen lever is depressed, delivering a stream of oxygen that cuts. The oxy acetylene handbook is a basic handbook or manual on oxy acetylene welding and cutting and their related processes. Safety in gas welding, cutting and similar processes.
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. Cut metals with oxyacetylene cutting torch job titles performing task. Completed inspect the torch handle and cutting attachment thoroughly. By burning acetylene enriched by oxygen, the attachment and tip heat the metal to critical temperature. The oxyacetylene handbook is a basic handbook or manual on oxyacetylene welding and cutting and their related processes. 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. Cutting with the oxyfuel process is just the opposite from of welding. Templatetracing profile cutter, ideal for cutting multiple.
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. Only mild steel and some low alloys meet the above conditions and can be cut effectively with the oxy fuel process. As a teenager in the 50s i burned cars apart in a wrecking yard with oxy propane, it works very well. Worlds best powerpoint templates crystalgraphics offers more powerpoint templates than anyone else in the world, with over 4 million to choose from. Welding torch or blow pipe with a set of nozzles and gas lighter. Many people prefer to read offline or to print out text and read from the real printed page. Oxy fuel cutting uses acetylene and oxygen to preheat metal to red hot and then uses pure oxygen to burn away the preheated metal. A prefabricated steel template is fastened to the template arm. Om251 341 page 2 welding and cutting on closed containers, such as tanks, drums, or pipes, can. This equipment will perform in conformity with the description thereof contained in this manual and accompa. For very thin plate cutting less than or equal to 1, acetylene provides minimum plate distortion and cleanest cut because of high inner btu and low total btu. 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.
Turn off acetylene torch valve you will have purged the acetylene line at the same. Introduction to gas welding and cutting a pdh online. See preheat flame cost calculation chart on page 8. Cpcpcm2049a cut using oxylpgacetylene equipment date this document was generated. When mixed together in correct proportions within a handheld torch or blowpipe, a hot flame is produced with a temperature of about 3,200c. In this unit you will be introduced to oxy fuel cutting and the safety precautions required when using oxy fuel cutting equipment. Hobart is registered to the iso 9001 quality system standard. Oxyfuel cutting uses acetylene and oxygen to preheat metal to red hot and then uses pure oxygen to burn away the preheated metal. Theyll give your presentations a professional, memorable appearance the kind of sophisticated look that todays audiences expect. The most significant route of overexposure for this product is by inhalation.
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 uses extreme heat to function, and setting it up properly is one of the most important steps in using it safely. As i recall, popping loud pop that puts out the torch happens if you dip the cone into the molten puddle or get too near it. Preheat flames are used to raise the surface or edge of the steel to approximately 1800f bright red color.
Liquid petroleum cylinders are painted aluminium and have lefthand threads. Ppt oxyacetylene welding powerpoint presentation free. Oxyacetylene torches have an attachment for cutting, which can be attached to the welding torch. Move the torch in a straight line to keep a straight cut, and move the torch at a uniform speed at which the flame is cutting through the metal. Cutting with the oxy fuel process is just the opposite from of welding. Turn the acetylene knob on the cutting torch about a quarter of a turn and light the acetylene.
The oxygasoline torch cut all thicknesses of steel between 0. Oxyacetylene cutting can be used to cut thicknesses from 28. Inspection of portable and oxy fuel gas systems wi37. Module 2 thermal processes unit 1 introduction to thermal processes and safety unit 2 introduction to oxyacetylene welding unit 3. The tx55 is ideal where multiple cuts of a certain shape or profile are required.
Data on this page was taken from victor equipment company documentation. February 2015 issue 2 pg 2 of 2 the instructions recommended within this document apply to normal risk conditions. Oxyacetylene cutting safety occupational safety and. 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. Careless use of oxyfuel torches has caused many fires. This book will highlight the welding and cutting processes. Mediumduty oxyacetylene cutting and welding outfit 770 502. Page 1 of 2 palm beach state college personal protective equipment ppe job hazard assessment department. Download oxyacetylene welding and cutting pdf file size. 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. Oxyfuel gas cutting and welding operation of oxyfuel torches involves oxygen and flammable gases under pressure, open flames, flying slag and hot metal, meatl fumes and combustion products. Because this is achieved by oxidation, it is only effective.
In addition, oxy fuel cutting is still widely used, both in heavy industry and light industrial and repair operations. Accessory accessory processes oxyfuel welding and cutting. However, as the metal thickness increased, the relative cutting rate of the oxygasoline torch over the oxyacetylene torch increased. It is acceptable to use acetylene regulators that indicate a static pressure up to 22 psi 151 kpa.
Fundamentals of gas cutting and welding cedengineering. Fusion weldinga welding process that joins metals by heating them to be a melting point and allowing them to fuse or flow together. Following the inspection and installation of the regulators and hoses, the checklist is divided into two sections. As a teenager in the 50s i burned cars apart in a wrecking yard with oxypropane, it works very well. Setup and shutdown procedure for oxy fuel cutting torch. To ensure the safe use of the workers when using the oxyacetylene welding and cutting torch. Propane or nat gas multitorch equipment, will often offer a much lower cost alternative to costly plasma cutting equipment. Oxy acetylene torches have an attachment for cutting, which can be attached to the welding torch. It is the only gas mixture hot enough to melt steel. Screw in acetylene regulator thandle adjusting valve to working pressure for. It is an invaluable aid to industry as well as in schools and universities.
The chemical action of the oxyacetylene flame can be adjusted. Hazard identification continued symptoms of overexposure by route of exposure. If you light up the tip and the flame is away from the tip, decrease the acetylene pressure and let the flame come back against the tip. How to operate an oxyacetylene cutting torch snapguide. Preheat times and pierce times are significantly affected by high preheat flame settings. Oxygenacetylene welding, or gas welding, is a process which relies on combustion of oxygen and acetylene. 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. Aug 30, 2019 an oxy acetylene torch is an affordable and versatile tool used by many people to heat, weld, solder, and cut metal. For only cutting and heating propane will do the job and its safer than acetylene too. Module 2 thermal processes unit 1 introduction to thermal processes and safety unit 2 introduction to oxy acetylene welding unit 3.
Always refer to oxygen and acetylene by their proper names. In planning the job, have the tanks firmly secured to prevent tipping over, the hose should be behind you so as to protect it. Cutting of metals by means of flame has many advantages over other methods, specially when the metal is of irregular shape. 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 volume 12 of machinerys mechanical library. Acetylene acetylene north america cyl valve commercial cga 300 acetylene has most btus concentrated in the inner flame resulting in the quickest pre heat times. How to set up an oxy acetylene torch with pictures wikihow. Provides practice leading to good handeye coordination. Teaches methods used in forming and controlling a weld puddle. Check for damage on valves, fittings and seating areas. Sep 29, 2018 oxy acetylene cutting is a gas flame cutting process to separate metal sheets. This guide provides the basic knowledge required for using the gas. Others want to carry documents around with them on their mobile phones and read while they are on the move. I used to be pretty good at it back in high school welding class, 20 years ago.
In planning the job, have the tanks firmly secured to prevent tipping over, the hose should be behind you so as to protect it from damage due to flying sparks. See torch and cutting nozzles section beginning on page 15. Introduction to gas welding and cutting a pdh online course. How to cut metal with an oxy acetylene cutting torch. Oxyacetylene cutting safety in agriculture osha standard 1910. The resulting liquid metal slag is blown out by the cutting stream. An oxy acetylene torch is an affordable and versatile tool used by many people to heat, weld, solder, and cut metal. In modern steelage the steelmakers cut iron and steel by oxyacetylene, oxyhydrogen, oxy propane, oxynatural gas cutting blowpipes easily, speedily, and cleanly.
Winner of the standing ovation award for best powerpoint templates from presentations magazine. Safe operating procedures sop 15 oxy acetylene cutting. Inspection of portable and oxy fuel gas systems central. Retro systems assumes no responsibility for its accuracy.
Oxyfuel cutting is a chemical reaction between pure oxygen and steel to form iron oxide. All fuels produce the same quality of cut if adjusted properly on plates between 1 and 2. Follow the precautions in this safety section and those throughout this manual for your personal safety and the safety of people near the equipment. In this unit you will be introduced to oxyfuel cutting and the safety precautions required when using oxyfuel cutting equipment. Oxyfuel equipment is versatile, lending itself to welding, brazing, brazewelding, silver soldering, metal heating for bending and forming and oxyfuel cutting. Be skeptical of claims made by proprietary fuel gas suppliers for hotter flame temperature. The cutting attachment hooks up to the torch handle and holds the cutting tip. The tool you use for oxy acetylene cutting is called a. Check oxy fuel system for leaks with an approved leak detection solution or leak detector. Pure oxygen, instead of air, is used to increase the. Benefits of learning oxy acetylene welding and cutting.