Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Oxidation and decarburization resistant coating powder for high-carbon chromium bearing steel heating process

A high-carbon chromium bearing steel and coating powder technology, applied in the field of high-temperature protective coatings, can solve the problem of high cost, and achieve the effects of reducing steel decarburization, making full use of resources, and reducing oxidation

Active Publication Date: 2013-07-10
上海钫淦新材料科技有限公司
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese patent CN 101624643A discloses a coating for preventing oxidation and decarburization of steel plates in the production process of warm forming. The coating is costly due to the use of nano-materials

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

[0018] 1.1 # Sample: component ratio

[0019] Retonite

Blast furnace slag

Toner

Nickel Slag

Molybdenum ore powder

Phosphogypsum

60％

20％

12％

0.5％

0.5％

7％

[0020] 1.2 # Sample: component ratio

[0021] Retonite

Blast furnace slag

Toner

Nickel Slag

Molybdenum ore powder

Phosphogypsum

50％

30％

12％

0.5％

0.5％

7％

[0022] The ratio of powder to water is 2:1

[0023] The experiment was carried out with GCr15 bearing round steel specimens with φ10mm. The initial steel specimens had no decarburized layer, and the height of each specimen was 50mm. Heat the sample in a heating furnace to 400°C to 500°C to remove oil stains on the surface, clean the residual dirt and rust on the surface with a dilute hydrochloric acid solution, then wash it with ultrasonic shaking water three times, and dry it for later use.

[0024] The above two coating powders were mixed with water to obtain two coatings. The high-temperature anti-oxidation and decarburization experiment was carried out on...

Embodiment 2

[0028] 2.1 # Sample: component ratio

[0029] Retonite

Blast furnace slag

Toner

Nickel Slag

Molybdenum ore powder

Phosphogypsum

48％

30％

15％

0.5％

0.5％

6％

[0030] 2.2 # Sample: component ratio

[0031] Retonite

Blast furnace slag

Toner

Nickel Slag

Molybdenum ore powder

Phosphogypsum

40％

25％

25％

0.25％

0.75％

9％

[0032] The ratio of powder to water is 2:1

[0033] The experiment was carried out with a GCr15SiMo bearing round steel sample of φ10mm, and the treatment method and experiment method of the steel sample were the same as in Example 1. The above two kinds of paint powders were mixed with water to obtain two kinds of paints. The high temperature anti-oxidation decarburization experiment was carried out on GCr15SiMo bearing round steel of φ10mm. # And 2 # Both can prevent oxidation and decarburization of GCr15SiMo, and 2 # The anti-oxidation and anti-decarburization effect is better than the 1# sample.

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
particle sizeaaaaaaaaaa
particle sizeaaaaaaaaaa
particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention provides a coating powder which is used in the high-carbon chromium bearing steel heating process and simultaneously has oxidation and decarburization resistant functions. The powder comprises the following raw materials of: by weight, 40-70% of rectorite, 15-33% of blast furnace slag, 10-30% of powdered carbon, 0.1-1% of nickel slag, 0.1-1% of molybdenum mineral powder and 1-10% ofphosphogypsum. When in use, the powder can be directly adjusted to an appropriate density by the use of water, is applicable to a high-temperature heat treatment process before hot rolling of high-carbon chromium bearing steel, has good oxidation and decarburization resistant effects at 1000-1300 DEG C, and is easy to peel off. In addition, the metal surface quality is good.

Description

Technical field [0001] The invention relates to a high-temperature protective coating for iron and steel materials, in particular to a high-temperature anti-oxidation and decarbonization coating powder used in the high-temperature heat treatment process before hot rolling of high-carbon chromium bearing steel. The powder can be directly mixed with water. Background technique [0002] Heat treatment technology is widely used to control the mechanical properties of steel workpieces. In a high-temperature oxidizing atmosphere, steel materials will inevitably interact with oxygen in the environment during heat treatment, causing oxidation, decarburization of the matrix, and depletion of alloying elements. The oxidation and decarburization of the matrix restrict the surface quality of the finished material, and reduce the finished material rate and the operating rate of the heating furnace. In general, in order to ensure the quality of steel materials, high-pressure water is required...

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 Patents(China)
IPC IPC(8): C21D1/68
Inventor 魏连启王书华叶树峰王晓婧仉小猛陈运法
Owner 上海钫淦新材料科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com