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Permeation promoter for organic RE chemical heat treatment and its application

A technology of chemical heat treatment and permeation agent, which is applied in the direction of physical/chemical process catalyst, chemical/physical process, metal/metal oxide/metal hydroxide catalyst, etc., and can solve the problem that rare earth chlorides are prone to clogging droppers, etc. problems, to achieve the effect of overcoming the clogging of the dropper, increasing the cracking rate, and reducing the production of carbon black

Inactive Publication Date: 2008-01-23
哈尔滨意锋稀土材料开发有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the problems existing in the prior art, the present invention develops an organic rare earth chemical heat treatment permeation accelerator and its application, which can solve the problem that rare earth chlorides are prone to clogging dropper failure during use and are difficult to popularize in production practice

Method used

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  • Permeation promoter for organic RE chemical heat treatment and its application
  • Permeation promoter for organic RE chemical heat treatment and its application

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specific Embodiment approach 1

[0022] Specific embodiment 1: The organic rare earth chemical heat treatment permeation agent of this embodiment is composed of the following components according to weight percentage: 8-12% rare earth elements, 5-8% tetrachloroethylene, 1-4% rare earth metallocene, isomeric acid and the balance of isomeric alcohols.

[0023] In this embodiment, the rare earth elements are mixed rare earth metals with La and Ce as the main body, simple La or simple Ce rare earth metals; the isomeric acids are isooctanoic acid and naphthenic acid; alcohol. The infiltrating agent is soluble in kerosene, benzene and toluene, and is used to prepare carburizing and carbonitriding infiltrating agents.

specific Embodiment approach 2

[0024] Specific implementation mode two: the present implementation mode realizes its object of the invention through the following technical solutions:

[0025] 1. Test conditions:

[0026] 1. 105KW well-type carburizing furnace, equipped with a microcomputer automatic control system manufactured by Beijing Huijietong Company;

[0027] 2. Main penetration agent: kerosene, carrier gas: methanol;

[0028] 3. Workpiece material: 20CrMnTi; the workpiece is a gear below M6;

[0029] 4. Organic rare earth permeation agent: YF-I type, isooctanoic acid, naphthenic acid, and isooctyl alcohol are prepared as an extraction agent in a weight ratio of 2:1:1. After ammoniation at 70% of the acidity value, use super-concentration The organic rare earth solution is prepared by extraction technology, adding 5-8% tetrachlorethylene and 1-4% peracene rare earth to each liter of organic rare earth solution, which contains 8-12% pure rare earth, and mixes it with kerosene in different proportio...

specific Embodiment approach 3

[0035] Specific embodiment three: The organic rare earth chemical heat treatment permeation agent of this embodiment is composed of the following components according to weight percentage: 8-12% rare earth elements, 5-8% tetrachloroethylene, 1-4% rare earth metallocene, isobutyric acid Ammonium 20-30%, the balance of isomeric acid and isomeric alcohol.

[0036] In this embodiment, the rare earth elements are mixed rare earth metals with La and Ce as the main body, simple La or simple Ce rare earth metals; the isomeric acid is isooctanoic acid and naphthenic acid; the isomeric alcohol is isooctyl alcohol.

[0037] When organic rare earth chemical heat treatment infiltration catalyst is dissolved in different solvents (kerosene, ethyl acetate, acetone or isopropanol), it can be used for different purposes: carburizing, carbonitriding, nitriding, nitrocarburizing or multi-component Infiltration (Re, N, C, O, S, B).

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Abstract

The present invention is permeation promoter for organic RE chemical heat treatment and is application, and aims at solving the problem of RE chloride, which is easy to block dropper. The permeation promoter consists of RE elements 8-12 wt%, vinyl tetrachloride 5-8 wt%, cyclopentadiene RE 1-4 wt%, and ammonium isobutyrate 0-30 wt%, except isomeric acid and isomeric alcohol. The permeation promoter may be used in compounding carburizing and nitriding promoter and in the multiple-element co-permeation of RE, N, C, O, S and B. The organic RE of the present invention is easy to crack inside furnace to decompose active RE atoms for promoting permeation, contains no oxygen, and has higher solubility than RE chloride and less blocking.

Description

technical field [0001] The invention relates to a chemical heat treatment penetration accelerator and its application. Background technique [0002] Carburization accounts for about 80% in chemical heat treatment. At present, chemical heat treatment carburizing is generally composed of two components, a carburizing agent with a high carbon potential and a diluent with a low carbon potential, in order to facilitate the computer to control the carbon potential of the atmosphere in the furnace. Commonly used carburizing agent gases include natural gas methane and petroleum cracking gas propane; while liquids are hydrocarbons, such as kerosene, benzene, toluene, acetone, ethyl acetate, isopropanol, ethanol, etc. No matter what kind of carburizing agent is only Only when it is heated to 920°C can it be fully cracked and the furnace gas can be controlled to carburize. This is the basic reason why 920°C and above 920°C are used in conventional carburizing. [0003] Due to the par...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C8/44B01J23/10
Inventor 刘志儒刘成友张国良王鸿春闫牧夫
Owner 哈尔滨意锋稀土材料开发有限公司
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