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Gas forges vary in size and construction, from large forges using a big burner with a blower or several atmospheric burners to forges built out of a coffee can utilizing a cheap, simple propane torch. A small forge can even be carved out of a single soft firebrick. The primary advantage of a gas forge is the ease of use, particularly for a ...
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MAPP gas was a trademarked name, belonging to The Linde Group, a division of the former global chemical giant Union Carbide, for a fuel gas based on a stabilized mixture of methylacetylene (propyne), propadiene and propane. The name comes from the original chemical composition, methylacetylene-propadiene propane.
Oxy-propane torches are usually used for cutting up scrap to save money, as LPG is far cheaper joule for joule than acetylene, although propane does not produce acetylene's very neat cut profile. Propane also finds a place in production, for cutting very large sections. Oxy-acetylene can cut only low- to medium-carbon steels and wrought iron ...
With oxygen/propane torches, the air/fuel ratio can be much lower. The stoichiometric equation for complete combustion of propane with 100% oxygen is: [7] C 3 H 8 + 5 (O 2) → 4 (H 2 O) + 3 (CO 2) In this case, the only products are CO 2 and water. The balanced equation shows to use 1 mole of propane for every 5 moles of oxygen.
A finery forge contained finery and chafery hearths, usually one of the latter and one to three of the former. Each hearth was equipped with its own set of bellows, blowing into it through a tuyere. The blacksmith's hearth at their forge has a tuyere, often blown by foot-operated bellows. Tuyeres were also used in smelting lead and copper in ...