Hydrocarbon gas mixture for the under-pressure carburizing of steel
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United States of America Patent
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Apr 7, 2009
Grant Date -
May 18, 2006
app pub date -
Jul 2, 2003
filing date -
Oct 21, 2002
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Abstract
The subject of present invention relates to mixture for carburizing of steel products, mainly parts of machines, vehicles and every mechanical apparatus, used in vacuum furnaces. Present invention relates to mixture for under-pressure carburizing containing the carbon carrier comprising two unsaturated hydrocarbons, likely ethylene and acetylene, in volume ratio from 0.1 to 2.00. The carbon carrier can be further mixed with hydrogen or ammonia.
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