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Metal scattering and permeating thermal treatment method

A heat treatment method and test piece technology, applied in solid diffusion coating, metal material coating process, coating, etc., can solve the problem of failure to achieve universal use of products, and achieve improved wear resistance, enhanced corrosion resistance and The effect of corrosion resistance

Inactive Publication Date: 2010-10-13
林虎成
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, so far, the general use of the product has not been achieved, except for the special development and treatment of specific products in an appropriate way

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0008] Take a small part of the material as a test piece for pretreatment. First, soak the test piece in paint thinner of appropriate concentration, and then use any wire brush to remove foreign matter and rust on the surface of the test piece. Since the paint thinner has strong volatility, after the thinner is vaporized, it can be air-dried. The desired mixture is made into a paste and evenly applied to the pre-treated test piece three times. The desired mixture contains 7% or 10% of the boride product of the secondary mixture, which includes (1) calcium carbonate and lithium carbonate Mixture; (2) Alkaline metal and alkaline earth metal nitride compound; (3) Water-soluble alkaline metal and alkaline earth metal borate mixture; Contains 7% boron carbide, 4% potassium fluoroborate, 12% Calcium carbonate, 0.8% sodium nitride, 0.5% sodium tetraborate and silicon carbide and existing solid compounds; the mixture that meets the requirements of cast iron contains 20% water, 5.5% B...

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PUM

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Abstract

The present invention relates to a metal diffusion infiltration heat treatment method. Said method includes the following several main steps: using small part of material as test piece, making pretreatment, making required mixture into cream-like material, uniformly applying said cream-like material to the pretreated test piece for three times, coating paste agent, drying, then making atmosphere gas heat treatment, in atmospheric gas furnace utilizing high-pressure to introduce nitrogen gas, completely removing oxygen gas, retaining furnace interior temperature with 880deg.C for 1hr, naturally cooling, when the temperature is 100deg.C, taking out test piece, removing paste agent residuce completely, then making tempering treatment in a vacuum furnace with 400deg.C and polishing treatment.

Description

technical field [0001] The invention relates to a metal diffusion infiltration heat treatment method, in particular to a boron infiltration heat treatment method. Background technique [0002] Boronizing technology is an important processing method to protect soldering irons, steel, refractories, etc. from wear and tear. Thick and uniform boride layer especially FeB, Fe in soldering iron 2 Layer B, as the basic raw material, can also completely form a diffusion and penetration layer on the surface of the material. [0003] The previous boronizing technology relied on diffusion infiltration and solid chemical thermal reaction to form a hard structure with the base material, and compared with nitriding, carburizing and other treatments, it showed more excellent metal surface characteristics. But so far, the general use of the product has not been achieved except for the special development and treatment of specific products with appropriate methods. Contents of the inventi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C8/80C23C8/68
Inventor 林虎成朴辛圭
Owner 林虎成