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Super-wear-resistant steel-ceramic composite wear-resistant lining plate and molding method thereof

A technology of composite wear-resistant liner and forming method, which is applied in the field of mineral processing in mines, can solve the problems of not reaching high hardness index, reducing wear resistance, and ceramic block fragmentation, etc., and achieves simple and convenient installation, good combination, The effect of material structure compaction

Active Publication Date: 2019-12-20
吴葵阳
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the impact surface of the lining plate of this structure is the combined stress surface of the high chromium cast iron body and the cone ceramic block. Although it can solve the problem of the high hardness caused by the force of the all-steel lining plate to a certain extent, it is prone to However, under long-term use and the impact of gravity, the degree and time of deformation of the high-chromium cast iron body and the cone-shaped ceramic block are different, and the ceramic block is prone to cracking and falling off. Reduced wear resistance, affecting the proper function of the liner

Method used

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  • Super-wear-resistant steel-ceramic composite wear-resistant lining plate and molding method thereof
  • Super-wear-resistant steel-ceramic composite wear-resistant lining plate and molding method thereof
  • Super-wear-resistant steel-ceramic composite wear-resistant lining plate and molding method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] 1. Preparation of ZTA ceramic particles: ZTA ceramics are used for powder granulation, and the ceramic particles reach 50-80nm. Use an isostatic press to dry press the ceramic powder into blocks and pre-fire it at a temperature of 1150-1170°C. Then crush, screen the ZTA ceramic particles with a particle size of 1-3mm, and then sinter at a high temperature at a firing temperature of 1610-1630°C to obtain ZTA ceramic particles with irregular shapes, see image 3 .

[0031] 2. Detection of ZTA ceramic particles: The hardness of ZTA ceramic particles is measured by MH-5C microhardness tester, the bending strength is measured by three points with a span of 30mm (measured by bending method), and the fracture toughness KIC is measured by indentation method, as shown in the table below.

[0032] Physical and mechanical properties of ZTA ceramics

[0033]

[0034] 3. Prepare the honeycomb ceramic prefabricated body: mix ZTA ceramic particles with a high-temperature-resistan...

Embodiment 2

[0042] 1. Preparation of ZTA ceramic particles: ZTA ceramics are used for powder granulation, and the ceramic particles reach 60-100nm. Use an isostatic press to dry-press the ceramic powder into blocks and pre-fire it at a temperature of 1140-1165°C. Then crush, screen the ZTA ceramic particles with a particle size of 1-3mm, and then sinter at a high temperature at a firing temperature of 1630-1645°C to obtain ZTA ceramic particles with irregular shapes. See image 3 .

[0043] 2. Detection of ZTA ceramic particles: The hardness of ZTA ceramic particles is measured by MH-5C microhardness tester, the bending strength is measured by three points with a span of 30mm (measured by bending method), and the fracture toughness KIC is measured by indentation method, as shown in the table below.

[0044] Physical and mechanical properties of ZTA ceramics

[0045]

[0046] 3. Prepare the honeycomb ceramic prefabricated body: mix ZTA ceramic particles with a high-temperature-resista...

Embodiment 3

[0054] 1. Preparation of ZTA ceramic particles: ZTA ceramics are used to powder and granulate, and the ceramic particles reach 75-115nm. Use an isostatic press to dry press the ceramic powder into blocks and pre-fire it at a temperature of 1170-1195°C. Then crush, screen the ZTA ceramic particles with a particle size of 1-3mm, and then sinter at a high temperature at a firing temperature of 1625-1640°C to obtain ZTA ceramic particles with irregular shapes. See image 3 .

[0055] 2. Detection of ZTA ceramic particles: The hardness of ZTA ceramic particles is measured by MH-5C microhardness tester, the bending strength is measured by three points with a span of 30mm (measured by bending method), and the fracture toughness KIC is measured by indentation method, as shown in the table below.

[0056] Physical and mechanical properties of ZTA ceramics

[0057]

[0058] 3. Prepare the honeycomb ceramic prefabricated body: mix ZTA ceramic particles with a high-temperature-resist...

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Abstract

The invention relates to a super-wear-resistant steel-ceramic composite wear-resistant lining plate and a molding method thereof. The wear-resistant lining plate comprises a ZTA (zirconia toughened alumina) ceramic wear-resistant layer and a high-chromium cast iron layer, wherein the ZTA ceramic wear-resistant layer is positioned on the surface of the lining plate and is uniformly distributed; andthe high-chromium cast iron layer is positioned at the bottom of the lining plate and is integrally cast with the ZTA ceramic wear-resistant layer. The molding method of the wear-resistant lining plate comprises the following steps: 1) preparing ZTA ceramic granules; 2) preparing a honeycomb-shaped ceramic prefabricated body; 3) performing casting molding; and 4) performing thermal treatment. Thewear-resistant lining plate adopts a unique specific composite structure of steel and ceramic, respective advantages of the steel and the ceramic are provided by the anti-impact lining plate, and thewear-resistant lining plate has both high wear resistance of ceramic and toughness of the steel, and is capable of enduring impact of medium / high strength of materials. The lining plate provided by the invention has the advantages of being good in super wear resistance, high in performance cost ratio and simple and convenient to mount and is wide in applicability.

Description

technical field [0001] The invention relates to mineral processing in mines, in particular to a super wear-resistant steel-ceramic composite wear-resistant liner and a forming method thereof. Background technique [0002] Generally, in mineral processing, the bulk materials in the ore are transported by belts from one station to another transfer station. Due to the quality and shape of the ore itself is large and irregular, and the processing equipment has reached the limit of use, The wear rate of equipment, especially chutes and hoppers, is very important. Replacing worn-out equipment represents a significant percentage of repair costs. The usual wear protection mainly includes wear-resistant liners or wear-resistant steel plates. Through bolt fixing or direct welding on the equipment, different wear-resistant linings are used in different industrial and mining, mainly depending on some factors: such as the type of ore, the height of the blanking material, the size of th...

Claims

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Application Information

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IPC IPC(8): B32B9/00B32B9/04B32B15/18B32B3/12B32B7/12B32B37/12B22D19/08B28B3/00
CPCB32B9/005B32B9/041B32B15/18B32B3/12B32B7/12B32B37/12B22D19/085B28B3/003B32B2307/558B32B2307/554
Inventor 吴葵阳
Owner 吴葵阳
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