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03/27/08 - USPTO Class 148 |  26 views | #20080073002 | Prev - Next | About this Page  148 rss/xml feed  monitor keywords

Carburization treatment method and carburization treatment apparatus

USPTO Application #: 20080073002
Title: Carburization treatment method and carburization treatment apparatus
Abstract: The invention provides a carburization treatment method in which a carburization treatment is conducted simultaneously with an operation of supplying a hydrocarbon gas and an oxidative gas into a furnace kept under a reduced pressure. Preferably, the internal pressure within the furnace is kept at 0.1 to 101 kPa, the hydrocarbon gas is one, two or more than two kinds of gases selected from the group consisting of C3H8, C3H6, C4H10, C2H2, C2H4, C2H6 and CH4, while the oxidative gas is an air, an O2 gas, or CO2 gas.
(end of abstract)
Inventors:
USPTO Applicaton #: 20080073002 - Class: 148223000 (USPTO)

Related Patent Categories: Metal Treatment, Process Of Modifying Or Maintaining Internal Physical Structure (i.e., Microstructure) Or Chemical Properties Of Metal, Process Of Reactive Coating Of Metal And Process Of Chemical-heat Removing (e.g., Flame-cutting, Etc.) Or Burning Of Metal, Carburizing Or Nitriding Using Externally Supplied Carbon Or Nitrogen Source, Including Use Of Vacuum

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Vacuum carburization processing method and vacuum carburization processing apparatus
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Highffrequency induction heating treatment equipment and method and induction heated thus treated product
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