Title: Method for preparing nitrogen group protecting atmosphere by direct reaction
Application Number: 86100540 Application Date: 1986.03.20
Publication Number: 1013034 Publication Date: 1987.09.02
Approval Pub. Date: Granted Pub. Date: 1993.05.19
International Classifi-cation: C01B21/04,C21D1/74,C21D1/76
Applicant(s) Name: Shanghai Xinhua Radio Factory Address:
Inventor(s) Name: Zhao Aimei
Attorney & Agent: JIN JIASHAN CHEN PING
Abstract:
     The invention refers to the method for preparing nitrogen group protecting and heating atmosphere for heat treatment of metal and alloy. According to the invention, neither the precise methyl alcohol feeding apparatus and low temp. splitting apparatus not the complex multigrade purifying apparatus are needed. Besides original heat treatment furnace, only some solid carbon material of some height is needed to put in the furnace. The some even better heat treatment effect can be reached.
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