High-strength high-toughness material for lining plate of mine ball mill

A ball mill liner, high toughness technology, applied in the field of wear-resistant materials, can solve the problems of poor wear resistance, low content of alloy elements, and the wear resistance can not meet the requirements of the market, and achieve the effect of improving wear resistance.

Inactive Publication Date: 2014-03-26
ANHUI NINGGUO HUADA WEAR RESISTANT MATERIALS
View PDF0 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Although the medium alloy steel in the prior art has good impact resistance and toughness, the wear resistance cannot meet the requirements of the market. Due to the poor wea...

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

[0014] A high-strength and high-toughness material used for mine ball mill liners, the chemical composition of which is calculated by weight percentage: C: 0.3%, Si: 0.8%, Mn: 1.2%, Cr: 0.6%, S: 0.06%, P: 0.08%, Boron: 0.08%, Titanium: 0.06%, Vanadium: 0.02%, Molybdenum: 0.09%, Bismuth: 0.05%, Refining elements: 0.8%.

[0015] The processing technology of the present invention is: during smelting, adding rare earth, boron, titanium and other 5 medium and low melting point metals to the molten iron for pretreatment and pouring at a temperature of 1530°C; then heating the material to 1050°C for quenching, and then 650°C Keep warm for 2 hours, keep warm at 750°C for 1.5 hours, keep warm at 850°C for 3 hours, and then temper at 380°C for 5 hours.

[0016] The material obtained according to the above method has a hardness of HRC45 after testing a 20mm thick test block, and the impact toughness of a 20mm×20mm×110mm unnotched sample is 48J / cm 2 .

Embodiment 2

[0018] A high-strength and high-toughness material used for mine ball mill liners, the chemical composition of which is calculated by weight percentage: C: 0.5%, Si: 1.5%, Mn: 1.5%, Cr: 4.0%, S: 0.08%, P: 0.06%, boron: 1.2%, titanium: 0.8%, vanadium: 0.3%, molybdenum: 0.5%, bismuth: 0.2%, fine crystal elements: 1.5%.

[0019] The processing technology of the present invention is: during smelting, adding rare earth, boron, titanium and other 5 medium and low melting point metals to the molten iron for pretreatment and pouring at a temperature of 1530°C; then heating the material to 1050°C for quenching, and then 650°C Keep warm for 2 hours, keep warm at 750°C for 1.5 hours, keep warm at 850°C for 3 hours, and then temper at 400°C for 6 hours.

[0020] The material obtained according to the above method has a hardness of HRC48 after testing a 20mm thick test block, and the impact toughness of a 20mm×20mm×110mm unnotched sample is 65J / cm 2 .

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
Impact toughnessaaaaaaaaaa
Impact toughnessaaaaaaaaaa
Login to view more

Abstract

The invention discloses a high-strength high-toughness material for a lining plate of a mine ball mill, which comprises the following chemical components in percentage by weight: 0.3-0.5% of C, 0.3-1.5% of Si, 0.5-1.5% of Mn, 0.8-4.0% of Cr, less than or equal to 0.1% of S, less than or equal to 0.1% of P, 0.08-1.2% of boron, 0.06-0.8% of titanium, 0.02-0.3% of vanadium, 0.09-0.5% of molybdenum, 0.05-0.2% of bismuth and 0.2-1.5% of grain-refined element. According to the material disclosed by the invention, the impact toughness of the material obtained by smelting, modification treatment and heat treatment exceeds 35-80J, and the tensile strength exceeds 1,000MP; compared with the material in the prior art, the wear resistance is improved by 3 times.

Description

technical field [0001] The invention belongs to the field of wear-resistant materials, and in particular relates to a high-strength and high-toughness material for a mine ball mill liner. Background technique [0002] The liner of the ball mill is used to protect the cylinder from the direct impact and friction of the grinding body and the material. At the same time, different forms of liner can be used to adjust the movement state of the grinding body to enhance the crushing effect of the grinding body on the material. , helps to improve the grinding efficiency of the mill, increase output and reduce metal consumption. [0003] The domestic high manganese steel liners of ball mills are gradually replaced by medium alloy steel liners, but with the continuous application of medium alloy steel liners in ball mill liners, they have gradually replaced manganese steel and other liners and become the mainstream of market development. [0004] In addition to protecting the cylinde...

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
IPC IPC(8): C22C38/32C22C38/60C21D1/18B02C17/22
Inventor 马振明
Owner ANHUI NINGGUO HUADA WEAR RESISTANT MATERIALS
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