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MAPP gas can be used at much higher pressures than acetylene, sometimes up to 40 or 50 psi in high-volume oxy-fuel cutting torches which can cut up to 12-inch-thick (300 mm) steel. Other welding gases that develop comparable temperatures need special procedures for safe shipping and handling.
prevents dangerous gas mixtures. ensures the gas only flows in the intended direction. and a flame arrestor (FA), which: cools the flame to below the ignition temperature of the gas or gas mixture. prevents flashback. In addition to these two basic safety functions a flashback arrestor can also have a: Thermal cut-off valve (TV), which:
As with other machine tools, CNC (computer numerical control) technology was applied to plasma cutting machines in the late 1980s into the 1990s, giving plasma cutting machines greater flexibility to cut diverse shapes "on demand" based on a set of instructions that were programmed into the machine's numerical control. [2]
The company manufactured acetylene gas generators and lighting systems in Frankfurt Höchst. Within the first seven years, around 300 appliances were exported. [3] [6] [7] Reacting to the emergence of electrical lighting, the company shifted its focus towards cutting and welding. [3] It developed its first hydrogen-oxygen cutting torch in 1903. [7]
ESAB headquarters in Gothenburg.. ESAB, Elektriska Svetsnings-Aktiebolaget (English: Electric Welding Limited company), is an American-Swedish industrial company. [1]The ultimate parent company of ESAB is ESAB Corporation, a New York Stock Exchange listed (Ticker: ESAB) with its principal executive office in North Bethesda, Maryland, U.S. [2]
Unlike oxy-fuel cutting, the PAC process can be applied to cutting metals which form refractory oxides such as stainless steel, cast iron, aluminum and other non-ferrous alloys. Since PAC was introduced by Praxair Inc. at the American Welding Society show in 1954, many process refinements, gas developments, and equipment improvements have occurred.