Production of fast-drying water self-stripping metal heat treatment protecting coating

A technology for metal heat treatment and protective coatings, applied in the field of preparation of water-based self-stripping metal heat treatment protective coatings, can solve the problems of slow drying of coatings, metal decarburization and oxidation, and non-environmental protection, and achieve good metal adhesion and coating dense effect

Inactive Publication Date: 2007-11-21
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

Metal heat treatment is generally performed at a high temperature of 400∽2000°C. If the metal is not protected during physical heat treatment, the metal will be decarburized and oxidized; during chemical heat treatment, if the part that does not need to penetrate elements is not protected, the metal parts will be scrapped.
[0003] The first way to solve the above problems is to protect the metal surface by copper plating, which has complicated procedures, high cost and is not environmentally friendly; the second is to coat the metal surface with a heat treatment protective coating
Generally, the existing protective coatings for metal heat treatment are mainly composed of glass, ceramics, and silicates, but these coatings are slow to dry and have poor adhesion to metals. M

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0014] Example 1-4

[0015] (1) Preparation of quick-drying water-based self-stripping metal heat treatment protective coating:

[0016] According to the formula described in Table 1, boric acid, water-based resin, titanium dioxide slurry, coloring pigment slurry, defoamer, and deionized water will be dispersed uniformly in a stainless steel cylinder at high speed with a stirrer to a fineness of less than 50μ. After passing the inspection, filter, Measuring and packaging.

[0017] Raw materials

[0018] Note: Tg refers to the glass transition temperature.

[0019] (2) Construction process of fast-drying water-based self-stripping metal heat treatment protective coating

[0020] First, remove the oil and rust from the metal workpiece that needs physical heat treatment or chemical heat treatment, and clean it, and then paint or spray the water-based metal heat treatment protective coating of each embodiment in Table 1 on the surface of the metal workpiece that needs to b...

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PUM

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Abstract

A method for producing fast-dry water self-stripping metal heat-treatment protective coating is carried out by putting boric acid 40.0-70.0 wt%, water resin 25.0-50.0 wt%, titanium pigment slurry 1.0-15.0 wt%, coloring pigment slurry 0.1-10.0 wt%, de-foaming agent 0.1-2.0 wt% and de-ionized water residue into stainless steel jar, high-speed dispersing to fineness below 50mu by agitator, filtering and packing to obtain final product. The precision metal work pieces have excellent oxidation and de-carbonizing resistances with air as medium for physical heat treatment, and have excellent cementation, aluminizing, siliconing and chromizing resistances with chemical substances as medium for chemical heat treatment. It has brushing and spraying functions, fast dry speed and better adhesion.

Description

Technical field: [0001] The invention relates to the field of mechanical processing metal heat treatment protection, in particular to a preparation method of a quick-drying water-based self-stripping metal heat treatment protection coating. Background technique: [0002] The metal heat treatment process can be divided into physical heat treatment and chemical heat treatment. Physical heat treatment such as normalizing, quenching, and annealing is to achieve the mechanical properties required by the workpiece by changing the transformation of the metal crystal phase structure; chemical heat treatment is through other chemical elements such as carbon and nitrogen. , aluminum, silicon, sulfur, cyanide, etc., to change the chemical composition of the metal surface, and then undergo subsequent heat treatment to achieve special performance requirements such as mechanical properties, chemical properties, and process properties. Metal heat treatment is generally performed at a high ...

Claims

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Application Information

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IPC IPC(8): C21D1/68
Inventor 罗漫
Owner SHANGHAI JIAO TONG UNIV
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