Oxyacetylene Welding
Oxyfuel welding is the process that uses the heat from a gas flame to melt base materials and cause them to join together. The gas flame is created by the combustion of oxygen and a fuel gas which is usually acetylene. Oxygen and acetylene burn in a neutral flame at a temperature between 5600 F and 6300 F, the hottest of any gas flame and capable of melting most metals. Other oxygen-fuel gas combinations are hot enough to use for soldering and brazing, but not hot enough for welding. Oxyfuel welding with acetylene is called oxyacetylene welding, but it is often simply referred to as gas welding.
(Creative Publishing International, Welding Basics: An Introduction to Practical & Ornamental Welding, p.26)
Flexible Overlay Process
In the Flexible Overlay Process a cloth impregnated with hard ceramic or metal powders and another cloth impregnated with brazing are laid onto a substrate and heated to fuse the powders to the surface. Thickness of overlay coatings is usually 0.25 to 2.5mm (0.010-0.100 in). In addition to coatings of WC and WC-Co. Cobalt based and nickel-based alloys are also applied. Applications include chain saw teeth, rock drill bits, oil drill collars, extrusion dies, and similar parts requiring good wear resistance.
I dont have to warn you nevertheless i am warning you for the last time. Another undergraduate student explained "Flexible Overlay Process" and "Oxyacetylene Welding". I dont understand that why are you trying to explain this term again. I cant give you any point for these terms.
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