Protective coating for heat treatment of metals

A technology for metal heat treatment and protective coatings, applied in anti-corrosion coatings, polyester coatings, coatings, etc., to achieve the effects of good temperature resistance, reduced oxidation loss, and convenient use and operation

Inactive Publication Date: 2014-03-12
JIANGSU UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a protective coating for metal heat treatment in order to solve the problems of oxidation and decarburization in the metal heat treatment process.

Method used

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  • Protective coating for heat treatment of metals
  • Protective coating for heat treatment of metals
  • Protective coating for heat treatment of metals

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] 1. Content formula according to mass percentage

[0023]

[0024] 2. Preparation method

[0025] The coating of the present invention is obtained by mixing the water-based polyester resin, water glass, high-temperature resistant cement, temperature-resistant filler and water reducer evenly, and then packaging.

[0026] 3. Performance indicators

[0027] After testing, the coating has no scale or corrosion after 12 hours at 800°C, the coating automatically falls off after metal heat treatment, the coating has no cracking bubbles, and the coating adhesion is 0.7MPa.

Embodiment 2

[0029] 1. Content formula according to mass percentage

[0030]

[0031] Two, preparation method is the same as embodiment 1.

[0032] 3. Performance indicators

[0033] After testing, the coating has no scale or corrosion after 12 hours at 860°C, the coating automatically falls off after metal heat treatment, the coating has no cracking bubbles, and the coating adhesion is 0.5MPa.

Embodiment 3

[0035] 1. Content formula according to mass percentage

[0036]

[0037] Two, preparation method is the same as embodiment 1.

[0038] 3. Performance indicators

[0039] After testing, the coating has no scale or corrosion after 12 hours at 900°C, the coating automatically falls off after metal heat treatment, the coating has no cracking bubbles, and the coating adhesion is 0.78MPa.

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Abstract

The invention discloses a protective coating for heat treatment of metals. The coating comprises the following components in percentage by weight: 5-20% of waterborne polyester resin, 10-35% of water glass, 20-35% of high-temperature resistant cement, 15-25% of temperature resistant filler, 1-5% of a water reducer and 5-10% of water. The coating disclosed by the invention is good in temperature resistance, simple in preparation method and convenient to use and operate, the oxidation loss of a metal workpiece can be reduced, and the coating is easy to fall after heat treatment of metals.

Description

technical field [0001] The invention belongs to the field of coatings, and relates to a metal coating, in particular to a protective coating for metal heat treatment. Background technique [0002] During the heat treatment process of metal, with the increase of temperature, the metal will undergo a series of changes such as oxidation and decarburization, which will lead to the deterioration of the properties of metal materials; in the process of metal oxidation, oxide scales are usually formed. Analyzing the structure of the oxide scale, it can be found that the structure is loose and cracked, and the thickness is very thick, which not only brings a huge workload to the subsequent pickling treatment, but also affects the corrosion resistance and mechanical properties of the metal if it is not cleaned thoroughly. strength. [0003] In order to prevent and reduce the oxidation and decarburization of metals during heat treatment, a lot of work has been done over the years to s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D167/00C09D7/12C09D5/08C09D5/20
Inventor 高延敏王丹李照磊
Owner JIANGSU UNIV OF SCI & TECH
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