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

Wear-resistant alloy and application thereof in millstone tile

A technology of wear-resistant alloy and hard alloy, which is applied in the field of wear-resistant alloy and its application in the grinding tile of coal mill. It can solve the problems of low comprehensive performance such as strength, hardness, toughness and service life, and achieve internal and external hardness. Uniformity, good performance, effect of uniform composition

Active Publication Date: 2013-08-21
SHENYANG WEIYUELI ELECTRICAL EQUIP
View PDF3 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a wear-resistant alloy and its application in the grinding tile of a coal mill, so as to solve the problem of low comprehensive performance of wear-resistant materials in the prior art, such as strength, hardness, toughness and service life.

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
  • Wear-resistant alloy and application thereof in millstone tile
  • Wear-resistant alloy and application thereof in millstone tile

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] In this embodiment, by weight percentage, the chemical composition of the wear-resistant alloy is:

[0057] C0.33; Si1.0; Mn0.9; P0.035; S0.024; Cr23; Cu1.15; Mo2;

[0058] In this embodiment, the heat treatment process of the wear-resistant alloy includes the following steps:

[0059] 1. For normalizing, the temperature is gradually increased in stages and then rapidly cooled after heat preservation:

[0060] 200℃±10℃ for 30 minutes;

[0061] 400℃±10℃ for 60 minutes;

[0062] 600℃±10℃ for 90 minutes;

[0063] 800℃±10℃ for 60 minutes;

[0064] 1020℃±10℃ for 4 hours;

[0065] Air cooling to room temperature by means of fan blowing;

[0066] 2. Tempering, natural cooling after heat preservation in stages with gradually rising temperature:

[0067] 200℃±10℃ for 180 minutes;

[0068] 380℃±10℃ for 60 minutes;

[0069] 450℃±10℃ for 6 hours;

[0070] Cool naturally to room temperature.

[0071] In this embodiment, after adopting the described alloy composition and h...

Embodiment 2

[0075] In this embodiment, by weight percentage, the chemical composition of the wear-resistant alloy is:

[0076] C0.32; Si1.1; Mn0.8; P0.028; S0.033; Cr24; Cu1.1; Mo3; Al0.1; V0.6; B0.02; .

[0077] In this embodiment, the heat treatment process of the wear-resistant alloy includes the following steps:

[0078] 1. For normalizing, the temperature is gradually increased in stages and then rapidly cooled after heat preservation:

[0079] 200℃±10℃ for 20 minutes;

[0080] 400℃±10℃ for 70 minutes;

[0081] 600℃±10℃ for 80 minutes;

[0082] 800℃±10℃ for 70 minutes;

[0083] 1020℃±10℃ for 3 hours;

[0084] Air cooling to room temperature by means of fan blowing;

[0085] 2. Tempering, natural cooling after heat preservation in stages with gradually rising temperature:

[0086] 200℃±10℃ for 150 minutes;

[0087] 380℃±10℃ for 70 minutes;

[0088] 450℃±10℃ for 5 hours;

[0089] Cool naturally to room temperature.

[0090] In this embodiment, after adopting the described a...

Embodiment 3

[0094] In this embodiment, by weight percentage, the chemical composition of the wear-resistant alloy is:

[0095] C0.35; Si0.9; Mn1.0; P0.035; S0.026; Cr22; Cu1.2; Mo1; Al0.2; V0.4; B0.04; .

[0096] In this embodiment, the heat treatment process of the wear-resistant alloy includes the following steps:

[0097] 1. For normalizing, the temperature is gradually increased in stages and then rapidly cooled after heat preservation:

[0098] 200℃±10℃ for 40 minutes;

[0099] 400℃±10℃ for 50 minutes;

[0100] 600℃±10℃ for 100 minutes;

[0101] 800℃±10℃ for 50 minutes;

[0102] 1020℃±10℃ for 5 hours;

[0103] Air cooling to room temperature by means of fan blowing;

[0104] 2. Tempering, natural cooling after heat preservation in stages with gradually rising temperature:

[0105] 200℃±10℃ for 200 minutes;

[0106] 380℃±10℃ for 50 minutes;

[0107] 450℃±10℃ for 7 hours;

[0108] Cool naturally to room temperature.

[0109] In this embodiment, after adopting the described ...

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
tensile strengthaaaaaaaaaa
yield strengthaaaaaaaaaa
tensile strengthaaaaaaaaaa
Login to View More

Abstract

The invention relates to the field of a wear-resistant material and an application thereof, and in particular relates to a wear-resistant alloy and an application thereof in a millstone tile of a coal mill, which are used for solving the problems that the wear-resistant material in the prior art has lower comprehensive performance in strength, hardness, toughness, service life and the like. The wear-resistant alloy comprises the following chemical components in percentage by weight: 0.32-0.35% of C, 0.9-1.1% of Si, 0.8-1.0% of Mn, less than or equal to 0.04% of P, less than or equal to 0.04% of S, 22-24% of Cr, 1.1-1.2% of Cu, 1-3% of Mo, 0.1-0.2% of Al, 0.4-0.6% of V, 0.02-0.004% of B, 0.3-0.5% of rare earth element and the balance of Fe. The millstone tile is subjected to sand casting and casting molding by use of the wear-resistant alloy. By adopting the specific alloy components and the heat treatment technology, the service life of the produced millstone tile is not shorter than twice the average service life of the like products; the millstone tile still can be used normally after 19,859 hours of test use, thereby indicating good performance of the product; and moreover, the labor intensity of workers can be reduced, and the efficiency can be improved.

Description

technical field [0001] The invention relates to the field of wear-resistant materials and their applications, in particular to a wear-resistant alloy and its application in grinding tiles of coal mills. Background technique [0002] According to the statistics of relevant departments, the annual market demand for wear-resistant materials in my country is about 3.5-4 million tons, mainly used in industries such as electric power, mining, metallurgy, transportation, and building materials, among which the demand for power industry is about 870,000 tons. , totaling more than 9 billion yuan, is an industry with great demand. [0003] Wear-resistant alloy steel is a kind of special performance steel used in wear conditions. Its main characteristics are high strength, hardness, toughness and wear resistance under wear conditions. Wear-resistant alloy steel is divided into three categories according to the content of chemical elements: the first type of wear-resistant low-alloy ste...

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): C22C38/32C21D1/28C21D1/18B22D19/00B02C7/11
Inventor 夏金利
Owner SHENYANG WEIYUELI ELECTRICAL EQUIP
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