Organic rare-earth energizer for chemical heat treatment

A technology of chemical heat treatment and infiltration agent, which is applied in the direction of metal material coating process, coating, solid-state diffusion coating, etc., can solve the problem of rare earth chloride clogged dropper, complex components of rare earth infiltration agent, high cracking temperature, etc. problems, to achieve the effects of reduced energy consumption, increased infiltration speed, and low cracking temperature

Active Publication Date: 2009-10-21
LESHAN YOUYAN RARE EARTH NEW MATERIAL CO LTD
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Problems solved by technology

In 2005, Harbin Yifeng Rare Earth Material Development Co., Ltd. applied for the patent "Organic Rare Earth Chemical Heat Treatment Infiltration Catalyst and Its Application" to solve the problem that rare earth chlorides are prone to clogging dropper failure during use. The organic rare earth infiltration catalyst was invented. The main composition of the agent: 8-12% rare earth elements, 5-8% tetrachlorethylene, 1-4% rare earth metallocene, 0-30% ammonium isobutyrate, the balance of isomeric acid and isomeric alcohol, which can be used to prepare carbu...

Method used

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  • Organic rare-earth energizer for chemical heat treatment
  • Organic rare-earth energizer for chemical heat treatment

Examples

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Effect test

Embodiment 1

[0036] According to weight percent, methanol is 40wt%, carbon tetrachloride is 56wt% (the volume ratio of methanol and carbon tetrachloride is 1.43), ferrocene is 0.4wt%, and rare earth is 3.6wt% (rare earth and ferrocene The content of ferrocene is 4%, and the content ratio of rare earth and ferrocene is 9), and the above materials are mixed and formulated into a permeation agent. In the rare earth, the rare earth element is a mixture, and the rare earth element is divided into 98wt% Ce, 2wt% % La.

[0037] Dissolve the rare earth infiltration agent in the mixture of kerosene and methanol to ensure that the rare earth content is 1.0%, and use the infusion method to infiltrate at 860°C in the furnace for low-temperature carburizing during the heat treatment of the workpiece. The infiltration results are shown in the table 2. Workpiece heat treatment process conditions:

[0038] Heat treatment equipment: 60kw well type carburizing furnace;

[0039] Heat treatment workpiece: ...

Embodiment 2

[0042] According to weight percent methyl alcohol and the mixture of ethanol 1: 1 are 50wt% altogether, and carbon tetrachloride is 1.0wt% (the volume ratio of alcohols and carbon tetrachloride is 100), and ferrocene is 0.5wt%, and rare earth is 48.5wt% (the content of rare earth and ferrocene is 49%, the content ratio of rare earth and ferrocene is 97), the above-mentioned materials are mixed and formulated into a permeation agent, and the rare earth element used is 75wt% Ce and 25wt% La. The infiltration test is the same as in Example 1, and the infiltration results are shown in Table 2.

Embodiment 3

[0044] According to weight percent methyl alcohol and ethanol mixture are 30wt% altogether, and carbon tetrachloride is 15wt% (the volume ratio of alcohols and carbon tetrachloride is 4), ferrocene is 13wt%, and rare earth is 32wt% (rare earth and The content of ferrocene is 45%, and the content ratio of rare earth to ferrocene is 2.46), and the above materials are mixed and formulated into the infiltration agent. The composition of rare earth elements is shown in Table 1. The infiltration test is the same as in Example 1, and the infiltration results are shown in Table 2.

[0045] Table 1 Rare earth element distribution wt%

[0046] La 2 o 3

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Abstract

The invention relates to an organic rare-earth energizer for chemical heat treatment and provides a surface chemical heat treatment energizer for a metal product. The energizer has the advantages of high activity, low cracking temperature, simple prescription, no pipeline blockage, and the like. The energizer not only can improve the catalysis speed and reduce the catalysis temperature, but also can obviously improve the brittleness, the wearing resistance and the contact fatigue and the flexural fatigue life of a catalyzing layer, has safety, reliability and stable product quality, greatly reduces the energy consumption in the heat treatment process, increases the heat treatment speed by 25 percent to 50 percent and reduces the energy consumption by 30 percent to 55 percent by the cooperation of rare-earth metallocene and ferrocene. By using a mixture of the rare-earth metallocene and the ferrocene as a main component of the energizerm, and the energizer has low the cracking temperature, can solve the problem of blocking a pipeline in the heat treatment process and can be used in the solid catalyzing and liquid catalyzing fields.

Description

technical field [0001] The invention relates to an organic rare earth penetration accelerator for chemical heat treatment technical background [0002] The surface chemical heat treatment of metal products is to change the surface phase structure of metal materials through thermal penetration of elements such as carbon and nitrogen, thereby improving the surface mechanical properties and corrosion resistance of materials. It has become a necessary process for some metal products, such as automobile chassis, bearings, Gears, piston pins, chains, tracks, tools and more. However, the energy consumption of surface heat treatment is high and the process lasts for a long time. Therefore, infiltration technology can be used to accelerate the chemical heat treatment process and reduce energy consumption. [0003] Rare earth is a very active element. Rare earth is used in the carburizing process. It is generally believed that rare earth has four functions: [0004] One is to optimi...

Claims

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Application Information

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IPC IPC(8): C23C8/00
Inventor 龙志奇黄小卫李红卫张顺利崔大立韩业斌彭新林
Owner LESHAN YOUYAN RARE EARTH NEW MATERIAL CO LTD
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