Increasing the speed of air-plasma cutting of copper and its alloys by adding hydrocarbons into plasma-forming air

A method to improve the speed of air--plasma cutting of Cu and its alloys by increasing the heat evolution during curing is described. The addition of propane--butane into the arc is necessary because the heat of formation of copper oxides is only 165 kJ/mol vs. 553 kJ/mol for iron oxides. Data show...

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Veröffentlicht in:	Welding international 1988-01, Vol.2 (11), p.995-996
Hauptverfasser:	Chernyak, R V, Karp, I N
Format:	Artikel
Sprache:	eng
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description	A method to improve the speed of air--plasma cutting of Cu and its alloys by increasing the heat evolution during curing is described. The addition of propane--butane into the arc is necessary because the heat of formation of copper oxides is only 165 kJ/mol vs. 553 kJ/mol for iron oxides. Data show that the air--hydrocarbon mixture improves the cutting efficiency by 1.4 and the cutting speed increases from 0.65 to 0.9 m/min. (Original in Russian). 4 ref.--R.A.S.
doi_str_mv	10.1080/09507118809447594
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title	Increasing the speed of air-plasma cutting of copper and its alloys by adding hydrocarbons into plasma-forming air
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