This video will give you an indepth lesson on how to setup and break down your rig. Oxy fuel cutting and plasma cutting both have their pros and cons and both are extremely useful. More people use the oxy fuel cutting process than any other welding process. I thought i would use both for this video and talk a bit about the pros of each. Oxygen need not be completely mixed with fuel gas before they leave the tip and create the flame. The chemical action of the oxy acetylene flame can be adjusted. What functionalities should you take into account when automating this cutting. While this document contains advice on the associated health risks, for more indepth guidance the british metals federation health and safety manual should also be consulted. Oxy fuel welding commonly called oxyacetylene welding, oxy welding, or gas welding in the u. 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. Setup and shutdown procedure for oxyfuel cutting torch a handout containing the highlights of the video titled setup and shutdown procedure for oxyfuel welding.
The oxy fuel gas cutting process creates a chemical reaction of oxygen with the base metal at elevated temperatures to sever the. The shortest distance through the material is a cut perpendicular to the wall. To attain a similar adiabatic flame temperature the o2 proportion of the gases passing through the burner is higher, typically 30%, higher than that for air of 21%. Spatter occurs during this process, because the oxygen blows away the slag upwards during piercing. By understanding these fundamental relationships, all operators can reason the. Esabs experience with oxy fuel cutting dates back to 1907. Oxy fuel cutting cannot cut nonferrous metals such as aluminum, stainless, brass or copper. Elements such as chromium, nickel, molybdenum inhibit the ability to cut steel with the oxy fuel process. The oxy fuel cutting process is largely unchanged since its earliest days.
Gas welding is a type of liquid state welding process in which fuel gases burns to generate heat. Oxyfuel combustion is the process of burning a fuel using pure oxygen instead of air as the primary oxidant. Oxygen flow must increase at about the same ratio in order to oxidize the steel. 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. Oxyfuel welding ofw is a group of welding processes that join metals by heating them with a fuel gas flame or flares with or without the application of pressure and with or without the use of filler metal. Cutting processes application of oxyfuel cutting twi. Oxy fuel cutting is a chemical reaction between pure oxygen and steel to form iron oxide. Extended downtime for manual table cleaning is eliminated since klean sweep operates while you are cutting. It can be used to easily cut rusty and scaled plates and only requires moderate skill to produce successful results. Most cost efficient process for carbon steel cutting. They are often found with leaking hoses, incorrect repairs, broken glass, nonfunctioning regulators, clogged tips, cracked barrels, or what have you.
A preheating flame heats the metal to red heat, oxidation occurs, and the cut continues. Ransome has designed the plateproxhd to provide excellent thermal cutting at an affordable price. Competencies given a functional oxy fuel gas unit, instruction and demonstration of use, each student will be able to. Oxy fuel cutting can be very intimidating to students and inexperienced welders. 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. Study 44 terms welding chapter 6 flashcards quizlet. Oxy fuel gas cutting torch safety reminders fuel gas cutting tools are some of the most common tools used on our job sites, however at times, they are also some of the most misused tools.
Basic equipment suitable for cutting, gouging and other jobs such as welding and heating. What is required for a fully automated process, to by presented at fabtech, nov. Since the nitrogen component of air is not heated, fuel consumption is reduced, and higher flame temperatures are possible. The oxy fuel process utilizes a flame to generate heat for cutting, welding and brazing. Fundamentals of gas cutting and welding ced engineering. Flame cutting is used to make the edges of the work pieces and for sheet cutting.
In this article, we will discuss the high velocity oxy fuel hvof coating processes principle, working. Oxyfuel is one of the most widely used cutting processes with the following benefits. The equipment is easy to transport from worksite to worksite and is well suited for both mechanized and manual operations. Automatic process control oxyfuel cutting gce group. The oxyfuel process utilizes a flame to generate heat for. Factors affecting quality in oxyfuel cutting operators manual. Follow the precautions in this safety section and those throughout this manual for your personal safety and the safety of people near the equipment.
Pass a written test on safety and operation procedures on the oxy. The investment in an automatic slag removal table is easily justified because it increases production time and reduces labor costs. Manganese, silicon, phosphorus, and sulfur in normal amounts have little effect on the cutting process. When mixed together in correct proportions within a handheld torch or blowpipe, a hot flame is produced with a temperature of about 3,200c. What is the most common gas used for oxyfuel welding. Oxyfuel cutting is a process used to sever steel via a chemical reaction of oxygen with the base metal at elevated temperature. This new welding process rapidly spread around the world and changed welding forever.
In case of a beveled cut an angled cut for weld preparation the cutting torch will be at an angle and the heat transfer to. The demands of industry require that todays cnc controls assume responsibility for both path and process parameters. The highvelocity oxy fuel hvof coating is coming under the thermal spray coating process. Oxy fuel cutting is a time consuming process, especially cutting thick walled. This booklet has divided the oxyfuel cutting process into several key elements. Here are some of the pluses for using oxyfuel equipment. Oxyfuel gas equipment has many uses welding, cutting, heating. Mild and low alloy steels but not aluminium or stainless steel wide range of thickness typically from 1mm to mm it is therefore not surprising that the process.
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. However, after more than a century, it is still a vital process for cutting thick steel. Setup and shutdown procedure for oxy fuel cutting torch. Cutting table and iht cutting torch optional koike aronson inc. Piercing setpoint 05 v, torch height setting during piercing process. Oxy fuel cutting is a costeffective method of plate edge preparation for bevel and groove welding.
Oxy fuel cutting ofc is similar to ox fuel welding except that. Safety in gas welding, cutting and similar processes hse. Goggle or any other suitable eye protection must be used for flame cutting. Terms in this set 20 the oxyfuel process uses oxygen and what other types of gases. Safety in gas welding, cutting and similar processes. In case of a beveled cut an angled cut for weld preparation the cutting torch will be at an angle and the heat transfer to the material will be less than that of a. Oxy fuel cutting vs plasma cutting welding tips and tricks. Flame gouging on metal is an important extension of the principle of oxy acetylene cutting. This however, is available only to members of the british metals federation which can be contacted at. The bota bdlm is a highly versatile machine for oxy fuel cutting. In this unit you will be introduced to oxy fuel cutting and the safety precautions required when using oxy fuel cutting equipment. 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. Careless use of oxy fuel torches has caused many fires. Today we will learn about gas welding principle, working, equipments, types, application, advantages and disadvantages.
In the case of laser beam gas cutting, the material to be cut is heated up to the. 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. This spatter can stick to the cutting tip and affect the gas flow. Flashbacks are commonly caused by a reverse flow of oxygen into the fuel gas. Oxy fuel welding includes any welding operation that makes use of a fuel gas combined with oxygen as a heating medium. Run the klean sweep slag removal system without interrupting your production schedule. For decades cnc controls used for oxy fuel cutting were concerned only with the cutting path. This is the same as the oxy cutting process, except that a special type of nozzle is used in the standard cutting blowpipe. The oxyfuel process is the most widely applied industrial thermal cutting process because it can cut thicknesses from 0. Oxy fuel cutting is often used in the preparation of plate edges. In the past, process control was the responsibility of the machine operator. Oxygen is not flammable by itself, however, it increases the speed and force with which burning takes place.
Oxy fuel cutting is a reliable, accurate and competitive cutting technique used for the cutting of mild steel. 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. Oxy acetylene fuel cutting occurs when oxygen is directed to heated metal resulting in the metal burning or oxidizing away. Oxygenacetylene welding, or gas welding, is a process which relies on combustion of oxygen and acetylene. Are we wellinformed enough to make the best choice of fuel gas for oxyfuel cutting. Can be combined with plasma, or waterjet on the same part. Module 2 thermal processes unit 1 introduction to thermal processes and safety unit 2 introduction to oxy acetylene welding unit 3. The thermal spraying is an industrial coating process that consists of a heat source flame or other and a coating material in a powder form. This booklet has divided the oxy fuel cutting process into several key elements, their effect on quality and their interaction with each other. Oxy fuel equipment is versatile, lending itself to welding, brazing, brazewelding, silver soldering, metal heating for bending and forming and oxy fuel cutting. Oxy fuel welding and cutting the oxyfuel system is an auxiliary technique to welding developed since 1903 and used to date in many industrial applications.
Oxy acetylene cutting safety in agriculture osha standard 1910. Once oxygen is mixed with a fuel gas, the temperature rapidly increases to a point high enough to melt and wash away the steel. After the secondary flow has rinsed an abrasive pressu re vessel located in. This automated dual side drive, plasmaoxyfuel cutting machine is cost efficient and is manufactured in the. This book will highlight the welding and cutting processes. While not practical for stainless steel or aluminum, oxy fuel cutting is a good process for mild and low alloy steels. Kinetics of oxyfuel gas cutting of steels article pdf available in journal of the brazilian society of mechanical sciences and engineering 332. Oxy fuel cutting is a time consuming process, especially cutting thick walled materials.
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