A oates and a great selection of related books, art and collectibles available now at. Oxy acetylene is ideal for welding steel sheet metal, thin walled tubes, small pipe, and assemblies with poor fitup. Oxyfuel equipment is versatile, lending itself to welding, brazing, brazewelding, silver soldering, metal heating for bending and forming and oxyfuel cutting. When mixed together in correct proportions within a handheld torch or blowpipe, a hot flame is produced with a temperature of about 3,200c. 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. Insert the tip in the cutting torch head and tighten securely. The cutting tips, used for gas cutting differ from the welding tips, in aspect that the welding tip has one orifice opening while the cutting tip has multiple orifices of openings, as shown in fig. In concentrations higher than 21%, however, the situation is different. Oxyacetylene definition of oxyacetylene by the free. Close the acetylene valve on the torch once you are sure the pressure is regulated. Proper care of oxyacetylene cutting and welding equipment imca. With a 2hose cutting torch es, the preheat pressure is obtained through the cutting oxygen settings.
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. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Linde division and linde air products company page images at hathitrust the oxy acetylene handbook. However, oxy fuel cutting is still very popular and oxy acetylene cutting is present in nearly every metal fabrication shop. This lesson will address the safety and operating procedures necessary for the student to set proper working pressures on a oxyacetylene cutting torch. Casey cutting into some steel with an oxyacetylene torch.
Among all other gases, acetylene is capable of producing the hottest flame. 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. To vent the atmosphere from the acetylene hose, open the gas valve on the cutting torch handle until you hear gas escaping, then observe the lowpressure gauge to see if the pressure remains steady during flow and ensure that you have this regulator set correctly. Oxyacetylene cutting is a gas flame cutting process to separate metal sheets. This is just not the case with propane, for whatever reason. A practical handbook describing the welding and cutting of metals by the oxyacetylene and metalic arc process by j. Acetone can absorb many times its volume in acetylene without changing the acetylene.
Porous filler810%, acetone42%, acetylene gas36%, reserve volume70o f 1012%. With a two hose cutting torch, preheat pressure is set by the. When finished welding shut off the main valves, bleed. 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. How acetylene is made material, making, used, processing. The welding process that uses acetylene is known as oxyfuel cutting or gas cutting. Oxyacetylene flame cutting is a relevant and widespread industrial process. The oxy acetylene handbook is a basic handbook or manual on oxy acetylene welding and cutting and their related processes. Tip files should be used before working, to clean out any blockages of debris or soot from the holes of the torch.
Cutting with acetylene torch university of delaware. With a 2hose cutting torch, preheat pressure is set by the cutting oxygen. May 03, 2016 casey cutting into some steel with an oxyacetylene torch. 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. Always purge out the cutting oxygen passages by opening the cutting.
Alp resuam d ath e r gul o sin 25x 14 ho s etr ug ip z 5 and25x38h osef rtip siz e6 andl rg. Spatter can stick on or in these holes but can be removed with a tip cleaner. It is unstable in its pure form and thus is usually handled as a solution. How to cut plate straight and smooth with the gas axe. Typical operating parameters gas pressures and flow rates for achieving a range of gouge sizes depth and width can be seen in the table. How to cut metal with an oxy acetylene cutting torch. 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. However, oxyfuel cutting is still very popular and oxyacetylene cutting is present in nearly every metal fabrication shop. Torches with flashback arrestors require up to 25% more pressure as tip size increases 15 psi maximum acetylene. First close the acetylene knob all the way until the flame is extinguished.
The tool you use for oxyacetylene cutting is called a. Firepower oxyfuel 250 mediumduty cutting and welding. The resulting liquid metal slag is blown out by the cutting stream. Description smith universal mediumduty generalpurpose cutting torch forged brass head provides maximum heat resistance and durability three stainless steel tubes add strength and keep gases separate until mixed in the tip mediumduty brass handle and lever provide extra durability check valve prevents the accidental reverse flow of mixed gases universal preheat.
Pdf version 30 kb fires and explosions due to the misuse of oxygen. Features builtin reverseflow check valves and includes flashback arrestors. F orbes t ha nd cu i g r esult, 16 3land 8 ho s ew nu igtp z 6 o rlage. Other gases such as, methylacetylenepropadiene, propylene, hydrogen, and propane are used primarily for cutting, preheating, brazing and soldering. Also the oxygen control valve on the handle is to be opened completly. 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. Cte online lesson planner oxyacetylene cutting torch. This method is used to cut or weld materials that require temperatures as high as 3,500 c 6,330 f. Oxy acetylene cutting is used in many metal fabrication shops. Contact technical services at 18004261888 data compiled using mild steel as test material. The oxygen jet flow rate determines the depth and width of the gouge. In modern steelage the steelmakers cut iron and steel by oxyacetylene, oxyhydrogen, oxy propane, oxynatural gas cutting blowpipes easily, speedily, and cleanly.
Sep 29, 2018 oxy acetylene cutting is a gas flame cutting process to separate metal sheets. The course will address all persons in the manufacturing industry to achieve advanced skills in gas cutting required by using the oxy acetylene process. A common inside diameter of oxyfuel gas hose is 14 inch. Mar 29, 2019 an oxy acetylene torch, also known as a blow torch, is a dangerous cutting system, but its also a powerful and useful tool if you need to cut steel. 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.
The sample oxy acetylene welding safe work method statement job safety analysis is an extract of the first two identified health and safety hazards associated with the operation and how to use oxy acetylene welding equipment. Flashbacks and backfires flashbacks are commonly caused by a reverse flow of oxygen into the fuel gas hose continue reading proper care of. Pure acetylene is odorless, but commercial grades usually have a marked odor due to impurities. For use in welding and cutting, the working pressures must be controlled by a regulator, since above 15 psi 100 kpa, if subjected to a shockwave caused, for example, by a flashback, acetylene decomposes explosively into hydrogen and carbon. Under the guidance of the instructor the student will safely light the torch to obtain a neutral cutting flame. Oxy acetylene torches have an attachment for cutting, which can be attached to the welding torch. The most common use of acetylene is as a raw material for the production of various organic chemicals including 1,4butanediol, which is widely used in the preparation of polyurethane and polyester plastics. Normal air contains 21% of oxygen and the way in which common materials burn in it is well known. Wind up the hoses when finished shutting everything. To prevent such a situation a flashback arrestor is usually employed.
Adjust the oxygen regulator screw by turning it clockwise until the recommended pressure is achieved. Description smith universal mediumduty generalpurpose cutting torch forged brass head provides maximum heat resistance and durability three stainless steel tubes add strength and keep gases separate until mixed in the tip mediumduty brass handle and lever provide extra durability check valve prevents the accidental reverse flow of mixed gases universal preheat valve. Oxyacetylene torches have an attachment for cutting, which can be attached to the welding torch. Adjust the regulator delivery pressures according to the size and type of tip being used. Refer to the victor acetylene cutting tip chart in appendix a or welding nozzle flow data in appendix b for the recommended pressures. In oxyacetylene gouging, equal quantities of oxygen and acetylene are used to set a nearneutral preheating flame. Cylinders are packed with a porous material and saturated with acetone. This lesson will address the safety and operating procedures necessary for the student to set proper working pressures on a oxy acetylene cutting torch. This mediumduty firepower oxyfuel 250 mediumduty cutting and welding outfit is an exceptionally safe, highperformance gas welding and cutting torch system. Also known as a two seat cutting tip or cutting nozzle for use with standard cutting attachments wc. Acetylene storage free acetylene is never stored under high pressure. The chemical action of the oxyacetylene flame can be adjusted. Equipments used for oxyacetylene welding metallurgy. The second most common use is as the fuel component in oxy acetylene welding and metal cutting.
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. Do not allow cylinder valves or regulator assemblies to come into contact with grease, oil, or lubricants. When using oxy acetylene, the flame is bright enough to leave serious spots in your my vision even if not looking directly at it. Oxygenacetylene cutting definition is gas cutting with oxygen and acetylene. The course will address all persons in the manufacturing industry to achieve advanced skills in gas cutting required by using the oxyacetylene process. Fusion weldinga welding process that joins metals by heating them to be a melting point and allowing them to fuse or flow together. Oxygenacetylene welding, or gas welding, is a process which relies on combustion of oxygen and acetylene. This article throws light upon the ten basic equipments used for oxyacetylene welding. Purpose of the course the course will address all persons in the manufacturing industry to achieve advanced skills in gas cutting required by using the oxyacetylene process.
Oxygen acetylene cutting definition is gas cutting with oxygen and acetylene. Oxygen and acetylene use and safety virginia department of. Cutting of metals by means of flame has many advantages over other methods, specially when the metal is of irregular shape. 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. Oxygenacetylene cutting definition of oxygenacetylene. I used to be pretty good at it back in high school welding class, 20 years ago. Safety with oxyacetylene welding or cutting irish oxygen. 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 tips series 1 acetylene cutting tips tip packaging is color coded with reference to fuel gas usage. Acetylene usage for welding has dropped significantly. It is an invaluable aid to industry as well as in schools and universities.
For best results use appropriate capacity torches and 38 hose when using tip size 6 or larger. The low cost of oxyfuel gas cutting equipment is one of the main reasons for its use. If not stopped, the fire can travel through and damage the torch, hoses and explode the cylinder. 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. Jun 05, 20 how to cut plate straight and smooth with the gas axe. A pop will always be heard if the torch acetylene is turned off first when shutting down the torch. How to operate an oxyacetylene cutting torch snapguide. Fundamentals of gas cutting and welding cedengineering. This colorless gas is widely used as a fuel and a chemical building block. 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.
The tool you use for oxy acetylene cutting is called a. American welding society and osha both require shade 35 for brazing. The separation is done by heating the surface of the material over melting temperature and burning it through the supply of additional oxygen. Firepower oxyfuel 250 mediumduty cutting and welding outfit.
Oxyacetylene is ideal for welding steel sheet metal, thin walled tubes, small pipe, and assemblies with poor fitup. The oxyacetylene handbook is a basic handbook or manual on oxyacetylene welding and cutting and their related processes. 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. Series 1 acetylene cutting tips tip packaging is color coded with reference to fuel gas usage. Oxyacetylene gas cutting techniques manual type of course a credit bearing skills programme offered on a fulltime 5 days.
A t41 size 20 oxy acetylene cutting tip for 75125mm. Proper care of oxyacetylene cutting and welding equipment. By creating a safe work environment and carefully monitoring the pressure of the oxygen. The oxyfuel process is the most widely applied industrial thermal cutting process because it can cut thicknesses from 0. A credit bearing skills programme offered on a fulltime 5 days.