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Preparation method of TiB2 reinforced Fe-Cr-B alloy-based composite lining plate

A composite liner, fe-cr-b technology, applied in the field of wear-resistant materials, can solve the problem of poor bonding ability between ceramic particles and the matrix interface affecting the wear resistance of materials, achieve excellent wettability, simplify processing technology, enhance The effect of bond strength

Active Publication Date: 2020-12-15
XIAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method first converts TiB 2 The powder is dispersed in Fe-Cr alloy, fired and crushed to prepare TiB 2 The ceramic particles are then dispersed in the Fe-Cr alloy to form a prefabricated body, and then the Fe-Cr-B alloy liquid is poured to prepare the composite liner, and the TiB is enhanced by adding Fe-Cr alloy 2 The bonding strength of the interface between the ceramic particles and the Fe-Cr-B alloy improves the TiB 2 Enhance the wear resistance and impact resistance of the Fe-Cr-B alloy matrix composite liner, and solve the problem that the poor bonding ability of the ceramic particles and the matrix interface affects the wear resistance of the material

Method used

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  • Preparation method of TiB2 reinforced Fe-Cr-B alloy-based composite lining plate

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] This embodiment includes the following steps:

[0032] Step 1. Put TiB 2 powder and Fe-Cr alloy powder were added to the polyvinyl alcohol solution and stirred evenly to obtain TiB 2 Ceramic blank; the TiB 2 TiB in ceramic blank 2 The mass content of the Fe-Cr alloy powder is 84.5%, the mass content of the Fe-Cr alloy powder is 7.5%, and the content of the polyvinyl alcohol solution is 8.0%; the mass content of the chromium element in the Fe-Cr alloy powder is 50.0%, and the rest is iron element ; The mass content of polyvinyl alcohol in the polyvinyl alcohol solution is 5.0%, and the content of distilled water is 95.0%;

[0033] Step two, the TiB obtained in step one 2 The ceramic blank is put into the mold, and the pressure of 30MPa is applied for 20min to press to obtain TiB 2 ceramic body;

[0034] Step three, the TiB obtained in step two 2 After the ceramic body is dried, it is loaded into a vacuum sintering furnace, and the temperature is raised to 1800 °C ...

Embodiment 2

[0039] This embodiment includes the following steps:

[0040] Step 1. Put TiB 2 powder and Fe-Cr alloy powder were added to the polyvinyl alcohol solution and stirred evenly to obtain TiB 2 Ceramic blank; the TiB 2 TiB in ceramic blank 2 The mass content of powder is 87.5%, the mass content of Fe-Cr alloy powder is 4.5%, and the content of polyvinyl alcohol solution is 8.0%; the mass content of chromium element in the Fe-Cr alloy powder is 60.0%, and the rest is iron element ; The mass content of polyvinyl alcohol in the polyvinyl alcohol solution is 5.0%, and the content of distilled water is 95.0%;

[0041] Step two, the TiB obtained in step one 2 The ceramic blank is put into the mold, and the pressure of 30MPa is applied for 20min to press to obtain TiB 2 ceramic body;

[0042] Step three, the TiB obtained in step two 2 After the ceramic body is dried, it is loaded into a vacuum sintering furnace, and the temperature is raised to 1800 °C at a rate of 10 °C / min and a...

Embodiment 3

[0046] This embodiment includes the following steps:

[0047] Step 1. Put TiB 2 powder and Fe-Cr alloy powder were added to the polyvinyl alcohol solution and stirred evenly to obtain TiB 2 Ceramic blank; the TiB 2 TiB in ceramic blank 2 The mass content of powder is 85.0%, the mass content of Fe-Cr alloy powder is 7.0%, and the content of polyvinyl alcohol solution is 8.0%; the mass content of chromium element in the Fe-Cr alloy powder is 54.0%, and the rest is iron element ; The mass content of polyvinyl alcohol in the polyvinyl alcohol solution is 5.0%, and the content of distilled water is 95.0%;

[0048] Step two, the TiB obtained in step one 2 The ceramic blank is put into the mold, and the pressure of 30MPa is applied for 20min to press to obtain TiB 2 ceramic body;

[0049] Step three, the TiB obtained in step two 2 After the ceramic body is dried, it is loaded into a vacuum sintering furnace, and the temperature is raised to 1800 °C at a rate of 10 °C / min and a...

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Abstract

The invention discloses a preparation method of a TiB2 reinforced Fe-Cr-B alloy-based composite lining plate. The preparation method comprises the following steps that 1, TiB2 powder and Fe-Cr alloy powder are added into a polyvinyl alcohol solution, and the mixture is uniformly stirred to obtain a TiB2 ceramic blank; 2, pressing is conducted to obtain a TiB2 ceramic blank body; 3, vacuum sintering is conducted to obtain a TiB2 ceramic block; 4, the TiB2 ceramic block is crushed into TiB2 ceramic particles, then the TiB2 ceramic particles and Fe-Cr alloy powder are added into ethanol, uniformmixing is conducted, and vacuum sintering is conducted to obtain a prefabricated body; and 5, Fe-Cr-B alloy liquid is poured into the prefabricated body, and the composite lining plate is obtained. According to the preparation method, the bonding strength of the TiB2 ceramic particles and the internal interface of the Fe-Cr-B alloy-based composite lining plate is enhanced through the Fe-Cr alloy,the wear resistance of the composite lining plate is improved, the quality of the composite lining plate is improved, the surface treatment process is simplified, the preparation cost is reduced, andthe problem that the wear resistance of a material is affected due to poor bonding capacity of the ceramic particles and the interface of a matrix is solved.

Description

technical field [0001] The invention belongs to the technical field of wear-resistant materials, in particular to a TiB 2 A method for preparing a reinforced Fe-Cr-B alloy-based composite liner. Background technique [0002] The ball mill liner can effectively protect the cylinder, because the liner can block the impact and wear of grinding bodies and materials. In addition, the surface structure of the liner can also directly affect the movement trajectory of the grinding body, so the movement law of the grinding body can be regulated by optimizing the structure of the liner, thereby strengthening the crushing ability of the grinding body to the material, improving the working efficiency of the ball mill, and increasing the powder. Reduce wear and reduce parts loss. [0003] Ceramic particle reinforced metal matrix composites not only have the high hardness and strong wear resistance of ceramics, but also have the advantages of excellent plasticity, toughness and easy for...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D23/04C22C38/32C22C38/28C22C38/06C22C38/04C22C38/02C22C29/14C22C1/08
CPCB22D23/04B22F3/1121C22C29/005C22C29/14C22C38/001C22C38/002C22C38/005C22C38/02C22C38/04C22C38/06C22C38/28C22C38/32
Inventor 易大伟李斌刘思凡
Owner XIAN UNIV OF SCI & TECH
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