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  2. Oxy-fuel welding and cutting - Wikipedia

    en.wikipedia.org/wiki/Oxy-fuel_welding_and_cutting

    Oxygen-rich butane torch flame Fuel-rich butane torch flame Cutting a rail just before renewing the rails and the ballast Cutting is initiated by heating the edge or leading face (as in cutting shapes such as round rod) of the steel to the ignition temperature (approximately bright cherry red heat) using the pre-heat jets only, then using the ...

  3. Thermal lance - Wikipedia

    en.wikipedia.org/wiki/Thermal_lance

    A thermal lance, thermic lance, oxygen lance, or burning bar is a tool that heats and melts steel in the presence of pressurized oxygen to create very high temperatures for cutting. It consists of a long steel tube packed with alloy steel rods, which serve as fuel; these are sometimes mixed with aluminum rods to increase the heat output.

  4. Underwater cutting and welding - Wikipedia

    en.wikipedia.org/wiki/Underwater_cutting_and_welding

    Oxygen arc cutting and arc welding underwater requires greater skill and stamina than working in a dry and stable environment. The underwater environment imposes several limitations and restrictions on both the equipment and the operator, and the restriction of short bottom times at greater depths for surface-oriented divers makes efficient working important to getting the job done in a ...

  5. Oxyhydrogen - Wikipedia

    en.wikipedia.org/wiki/Oxyhydrogen

    Oxyhydrogen is a mixture of hydrogen (H 2) and oxygen (O 2) gases. This gaseous mixture is used for torches to process refractory materials and was the first [1] gaseous mixture used for welding. Theoretically, a ratio of 2:1 hydrogen:oxygen is enough to achieve maximum efficiency; in practice a ratio 4:1 or 5:1 is needed to avoid an oxidizing ...

  6. Pressure regulator - Wikipedia

    en.wikipedia.org/wiki/Pressure_regulator

    Oxy-fuel welding and cutting processes require gases at specific pressures, and regulators will generally be used to reduce the high pressures of storage cylinders to those usable for cutting and welding. Oxygen and fuel gas regulators usually have two stages: The first stage of the regulator releases the gas at a constant pressure from the ...

  7. Walmart is trimming its starting wage for some new employees ...

    www.aol.com/finance/walmart-trimming-starting...

    The grocery chain raised its minimum wage earlier this year.

  8. Plasma torch - Wikipedia

    en.wikipedia.org/wiki/Plasma_torch

    Thermal plasmas are generated in plasma torches by direct current (DC), alternating current (AC), radio-frequency (RF) and other discharges. DC torches are the most commonly used and researched, because when compared to AC: "there is less flicker generation and noise, a more stable operation, better control, a minimum of two electrodes, lower electrode consumption, slightly lower refractory ...

  9. Flashback arrestor - Wikipedia

    en.wikipedia.org/wiki/Flashback_arrestor

    Depending on the application they are also often used at the torch side as an additional safety device. Flashback arrestors help prevent: Further gas flow in the case of pressure shocks. The entry of air or oxygen into the distribution line or single cylinders. Flashbacks which are the rapid propagation of a flame down the hose.

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