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

Water-soluble quenching medium used in high-chromium cast iron quenching

A technology of high chromium cast iron and quenching medium, applied in the direction of quenching agent, heat treatment equipment, manufacturing tools, etc., can solve the problems of not meeting the heat treatment requirements of high chromium cast iron, quenching cracks, etc., to improve wear resistance, increase hardenability, The effect of reducing production costs

Inactive Publication Date: 2013-08-07
LIAONING HAIMING CHEM PROD
View PDF3 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the PAG quenching medium has limitations and is suitable for ordinary carbon steel, medium and low alloy steel, etc., but for high alloy steel such as high chromium cast iron (high chromium ball, high chromium liner) and other materials with high hardenability It is prone to quenching cracks and cannot meet the heat treatment requirements of high chromium cast iron

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Water-soluble quenching medium used in high-chromium cast iron quenching
  • Water-soluble quenching medium used in high-chromium cast iron quenching
  • Water-soluble quenching medium used in high-chromium cast iron quenching

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A polyvinylpyrrolidone (PVP) (molecular weight: 3000) 12.0 parts

[0025] B sodium polyacrylate (PAAS) (molecular weight: 25000000) 3.0 parts

[0026] C rust inhibitor 8.0 parts

[0027] D fungicide 0.5 parts

[0028] E pH adjuster 5.0 parts

[0029] F water 71.5 parts.

[0030] The higher the chromium content of the high chromium ball, the higher its hardenability, so in order to ensure that the high chromium ball does not crack during quenching, it is necessary to increase the content of sodium polyacrylate and reduce the cooling rate of the medium V300.

Embodiment 2

[0032] A polyvinylpyrrolidone (PVP) (molecular weight: 3000) 18.0 parts

[0033] B sodium polyacrylate (PAAS) (molecular weight: 25000000) 1.0 parts

[0034] C rust inhibitor 6.0 parts

[0035] D fungicide 0.5 parts

[0036] E pH adjuster 5.0 parts

[0037] F water 65.0 parts.

[0038] For the high chromium cast iron liner, in order to ensure that the deformation is reduced during heat treatment, the content of polyvinylpyrrolidone is increased, and the colloid protection can reduce the internal stress and effectively control the deformation during the metallographic transformation of the workpiece.

Embodiment 3

[0040] A polyvinylpyrrolidone (PVP) (molecular weight: 3000) 15.0 parts

[0041] B sodium polyacrylate (PAAS) (molecular weight: 25000000) 2.0 parts

[0042] C rust inhibitor 7.0 parts

[0043] D fungicide 0.5 parts

[0044] E pH adjuster 5.0 parts

[0045] F water 70.5 parts.

[0046] It is more suitable for simultaneous quenching of high chromium balls and high chromium liners.

[0047] Table 1 Comparison of typical values ​​of technical indicators

[0048] Index item Example 1 Example 2 Example 3 Existing PAGs in the market Isothermal graded quenching oil Exterior Colorless to yellow viscous liquid Colorless to yellow viscous liquid Colorless to yellow viscous liquid Colorless to yellow viscous liquid homogeneous oily liquid pH value 10.28 10.01 10.15 9.35 — Flash point — — — — ≥200 Kinematic viscosity (mm 2 / s, 40℃) 956 889 936 289 ≤14（100℃） Freezing point (°C) -9℃ -9℃ -9℃ -11℃ ≤-5 Density ...

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
refractive indexaaaaaaaaaa
Login to View More

Abstract

The invention discloses a water-soluble quenching medium used in high-chromium cast iron quenching. The medium comprises the blended materials of, by weight, 12-18 parts of polyvinyl pyrrolidone, 1-3 parts of sodium polyacrylate , 6-8 parts of an anti-rust agent, 0.5 parts of a bactericide, 5 parts of a pH adjusting agent, and 65.5-75.5 parts of water. The medium is suitable for high-chromium cast iron quenching, and is safe and environment-friendly. The medium has relatively low cooling speed, such that quenched product has good wear resistance, and heat treatment requirement of high-chromium cast iron quenching can be sufficiently satisfied.

Description

technical field [0001] The invention relates to a water-soluble quenching medium used during heat treatment of high-chromium cast iron (high-chromium balls, high-chromium liners). Background technique [0002] High chromium cast iron is the abbreviation of high chromium white wear-resistant cast iron. In terms of wear resistance, it is much higher than alloy steel, and in terms of toughness and strength, it is much higher than ordinary white cast iron. At the same time, it also has good high temperature resistance and corrosion resistance, and it is convenient to produce and moderate in cost, so it has become one of the most excellent anti-wear materials in contemporary times. [0003] High chromium cast iron is a chromium-based white cast iron with a carbon content of 2.0% to 3.2% and a chromium content of 12% to 28%. A large amount of chromium is added to endow the material with high hardness, high wear resistance, high tempering stability and high corrosion resistance,...

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): C21D1/60C21D5/04
Inventor 姜聚满王莎莎夏丹凤杨秀成
Owner LIAONING HAIMING CHEM PROD
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