Atmosphere heat treatment adjuvant and its application method

An atmosphere and additive technology, applied in metal material coating process, coating, solid-state diffusion coating, etc., can solve the problems of slow nitrocarburizing infiltration rate, etc., to reduce carbon black formation, reduce process temperature, improve The effect of gas production

Inactive Publication Date: 2003-02-05
李兰根
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the prior art, in the preparation or use of the heat treatment atmosphere, there are generally probl...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Add 2% heavy chlorobenzene to the atmosphere raw material ethyl acetate, add methanol, water or air to adjust the carbon potential. It is used for carburizing, carbonitriding, and nitrocarburizing, which can increase the infiltration speed and reduce the process temperature.

Embodiment 2

[0042] Add 1% trichlorethylene by weight to the atmosphere raw material methanol, adjust the carbon potential with kerosene, and use it for carburizing, carbonitriding, and nitrocarburizing, which can increase the permeation speed and reduce the process temperature.

Embodiment 3

[0044] Add 4% by weight of chlorotoluene to methanol and kerosene as the atmosphere raw materials for carburizing, carbonitriding, and nitrocarburizing, which can increase the infiltration speed or reduce the process temperature.

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PUM

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Abstract

The present invention discloses a group of adjuvants for making atmosphere heat treatment of metal material and its application. They includes four classes: (1). Any one kind of haloid element compounds of carbon tetrachloride, freon, methenyl bromide and iodomethane; (2) any one kind of metal element compounds of manganese naphthenate, nickel nitrate and ferrocene; (3) any one kind of nitrogen-containing compounds of cyanuramide, nitrobenzol, aniline and acetylamine; and (4). and any one kind of rare earth lanthanum or cerium compounds of cerous nitrate and lanthanum nitrate. They can be used in the heat treatment atmopshere-making raw materials or atmospheres of methyl alcohol, acetone, kerosene, propane and natural gas, and can raise gas yield of atmosphere raw material, can reduce carbon black formation, and can reduce the technological temp. of atmosphere chemical heat-treatment carburization.

Description

(1): Technical field: [0001] The invention relates to an auxiliary agent for heat treatment of metal materials in atmosphere and its usage. (2): background technology: [0002] Atmosphere heat treatment of metal materials refers to the heat treatment of metal materials under atmosphere protection conditions. The atmosphere is generally composed of H 2 , N 2 , CO and a small amount of CH 4 , CO 2 、H 2 O and other gas components generally refer to thermal processing protection atmosphere and chemical heat treatment atmosphere. Almost all hydrocarbons or compounds containing only three elements of carbon, hydrogen and oxygen can react with water or air at high temperature to form a heat treatment atmosphere through cracking, decomposition or oxidation. For example: methanol, ethanol, n-butanol, isopropanol, acetone, ethyl acetate, benzene, toluene, xylene, kerosene, diesel, propane gas, butane gas, natural gas, RX gas, coal gas, etc. can be used as atmosphere heat treatme...

Claims

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Application Information

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IPC IPC(8): C23C8/20C23C8/24C23C8/30
CPCC23C8/20C23C8/24C23C8/30
Inventor 李兰根
Owner 李兰根
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