Safety in gas welding, cutting and similar processes This leaflet is for people who use compressed gases for welding, hot cutting and similar processes. It describes the hazards associated with portable oxy/fuel gas equipment and the precautions for avoiding injury and damage to property. Introduction
gas cannot be supplied in sufficient quantity to prevent the formation of a hazardous mixture of gas and air, a slug of inert gas must be released into the line before the gas. (b) When a pipeline is being purged of gas by use of air, the air must be released into one end of the line in a moderately rapid and continuous flow. If
The temperature of the plasma is in excess of 20 000°C and the velocity can approach the speed of sound. When used for cutting, the plasma gas flow is increased so that the deeply penetrating plasma jet cuts through the material and molten material is removed in the efflux plasma.
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. The oxyfuel process is the most widely applied industrial thermal cutting process because it can cut thicknesses from 0.5mm to 250mm, the equipment is low cost and can be used manually or mechanised.
GAS CUTTING The common methods used in cutting metal are oxygas flame cutting, air carbon-arc cutting, and plasma-arc cutting. The method used depends on the
The cutting gas protects the lens from cut particles or splashes of molten materials, and blows away molten or evaporated material. The gas may be active or inert: oxygen or air are reactive, while argon and nitrogen are inert.
GAS and an OXYGEN supply, in the same manner as a gas-welding torch. The cutting torch and nozzle combinations are of' varying design, depending on the specific type of cutting to be employed. The equipment required for gas welding has already been described and oxy-gas cutting equipment is basically similar except for the following items:
When cutting stainless steels which have a high chromium content ‘powder cutting’ would be employed. Generally acetylene is used with oxygen to provide the preheat flame but other gases can be used: propane for example or hydrogen which is used for underwater work because of its compressibility.
Plasma cutting really shines in this one – since the plasma is just electrified gas, a plasma cutter will basically cut any material that conducts electricity. Aluminum, steel, stainless, brass, copper, you name it, plasma makes quick work of it. For oxyfuel cutting torches, the answer is a little more complicated.
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Other specialty gases are sometimes used for other purposes. Argon gas is used when plasma marking (a whole other subject). A mixture of Argon and Hydrogen is often used when cutting thicker Stainless Steel or Aluminum. Some people use a mixture of Hydrogen and Nitrogen, or Methane and Nitrogen when cutting thinner Stainless Steel.
The Evolution of the Plasma Cutting Process. Plasma cutting has long proven to be a flexible and cost-effective method of processing parts. The plasma process can cut aluminium, mild steel, stainless steel and the toughest wear-resistant materials from as little as 1mm thick, right through to 60mm.Whilst there is an abundance of manufacturers staking claims as ‘market leading’, there are ...
"Power-driven woodworking machines" means all fixed or portable machines or tools driven by power and used or designed for cutting, shaping, forming, surfacing, nailing, stapling, wire stitching, fastening or otherwise assembling, pressing or printing wood, veneer, trees, logs or lumber. BACK TO TOP. 3. Rules for 16 and 17 year olds a.
Oxy-fuel welding (commonly called oxyacetylene welding, oxy welding, or gas welding in the United States) and oxy-fuel cutting are processes that use fuel gases (or liquid fuels such as gasoline) and oxygen to weld or cut metals. French engineers Edmond Fouché and Charles Picard became the first to develop oxygen- acetylene welding in 1903.
handmade gas cutting machine multy fungction (manuel and automatic)
The anesthesia gas machine is a device which delivers a precisely-known but variable gas mixture, including anesthetizing and life-sustaining gases. The anesthesia gas machine is also called the anesthesia workstation, or anesthesia delivery system. The components and systems as described in this document are typical for a anesthesia gas machine.
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