Oxidation and decarbonization preventing coating

An anti-oxidation and coating technology, which is applied in the field of metal heat treatment materials, can solve the problems of automatic peeling performance of coating protection and other problems, and achieve good self-stripping, good application prospects, and the effect of preventing oxidation and decarburization

Inactive Publication Date: 2015-12-09
JINAN HAOZE ENVIRONMENTAL PROTECTION TECH CO LTD
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The use of anti-oxidation coating is one of the methods to prevent oxidative decarburization during heat treatment of steel workpieces. It is simple and convenient to operate and low in price. However, the current coating protection performance and automatic peeling performance during cooling need to be improved.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment １

[0021] An anti-oxidation and decarburization coating of the present invention comprises a first coating and a second coating, and the first coating is located between the second coating and the workpiece surface;

[0022] The first coating consists of Na by weight ratio 2 O nSiO 2 45 parts, Al 2 o 3 30 parts, TiO 2 20 servings make up.

[0023] Na 2 O nSiO 2 where n is 1.6.

[0024] The thickness of the first coating was 1 mm.

[0025] The second coating is composed of 40 parts by weight of graphite powder and 25 parts of polyinternal olefin.

[0026] The graphite powder is 600 mesh.

[0027] The second coating thickness was 2 mm.

[0028] The coating of the present invention is used for workpiece protection, put into a furnace and heated to austenitization, and then quenched after heat preservation. The surface of the workpiece after quenching is as smooth as new, and the protected surface is free from oxidation and decarburization. The coating can effectively prev...

Embodiment 2

[0030] An anti-oxidation and decarburization coating of the present invention comprises a first coating and a second coating, and the first coating is located between the second coating and the workpiece surface;

[0031] The first coating consists of Na by weight ratio 2 O nSiO 2 50 parts, Al 2 o 3 40 parts, TiO 2 30 servings.

[0032] Na 2 O nSiO 2 where n is 3.

[0033] The first coating thickness was 0.5 mm.

[0034] The second coating is composed of 50 parts of graphite powder and 20 parts of polyinternal olefin by weight.

[0035] The graphite powder is 800 mesh.

[0036] The second coating thickness was 2 mm.

[0037] The coating of the present invention is used for workpiece protection, put into a furnace and heated to austenitization, and then quenched after heat preservation. The surface of the workpiece after quenching is as smooth as new, and the protected surface is free from oxidation and decarburization. The coating can effectively prevent oxidation a...

Embodiment 3

[0039] An anti-oxidation and decarburization coating of the present invention comprises a first coating and a second coating, and the first coating is located between the second coating and the workpiece surface;

[0040] The first coating consists of Na by weight ratio 2 O nSiO 2 30 parts, Al 2 o 3 20 parts, TiO 2 10 servings make up.

[0041] Na 2 O nSiO 2 where n is 1.2.

[0042] The first coating thickness was 2 mm.

[0043] The second coating is composed of 30 parts of graphite powder and 30 parts of polyinternal olefin by weight.

[0044] The graphite powder is 600 mesh.

[0045] The second coating thickness was 3mm.

[0046] The coating of the present invention is used for workpiece protection, put into a furnace and heated to austenitization, and then quenched after heat preservation. The surface of the workpiece after quenching is as smooth as new, and the protected surface is free from oxidation and decarburization. The coating can effectively prevent oxid...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to view more

Abstract

The invention discloses an oxidation and decarbonization preventing coating. A first coating consists of Na2O.SiO2, Al2O3 and TiO2; and a second coating is composed of graphite powder and polyinternalolefin. According to the oxidation and decarbonization preventing coating, a double-layer coating is adopted, so that oxidation and decarbonization are greatly reduced during thermal treatment; and after workpieces are heated, the coating can be automatically peeled off from the surface of a basal body; and meanwhile, the coating is low in price, and has a good application prospect.

Description

technical field [0001] The invention relates to the technical field of materials for metal heat treatment process, in particular to an anti-oxidation and decarburization coating. Background technique [0002] During the heat treatment of the workpiece, the oxidation and decarburization of the surface and surface layer of the steel workpiece will cause the hardness of the workpiece to decrease, and the fatigue and early damage of the workpiece will affect the surface and overall quality of the workpiece. The oxidation and decarburization of the workpiece surface is generally unavoidable. In order to ensure the quality of the finished workpiece Dimensions and quality, before heat treatment must leave a certain margin in the dimensions of each part of the workpiece. How to realize the non-oxidative decarburization treatment of workpieces in ordinary electric furnaces is a problem that has been pursued in the industry. [0003] The use of anti-oxidation coating is one of the me...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): C21D1/70
Inventor 冉德焕
Owner JINAN HAOZE ENVIRONMENTAL PROTECTION TECH CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap