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An impact-resistant and wear-resistant composite liner and its preparation method

A technology of anti-impact and wear-resistant, composite liner, which is applied in the field of wear-resistant materials, can solve the problems of poor impact resistance and poor toughness, and achieve the effects of good combination, improved damage tolerance, and improved wear resistance of the liner

Active Publication Date: 2022-04-08
XIAN UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] One object of the present invention is to provide an impact-resistant and wear-resistant composite liner, which solves the problems of poor toughness and poor impact resistance of the existing composite liner

Method used

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  • An impact-resistant and wear-resistant composite liner and its preparation method
  • An impact-resistant and wear-resistant composite liner and its preparation method
  • An impact-resistant and wear-resistant composite liner and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The preparation of an impact-resistant and wear-resistant composite liner comprises the following steps:

[0034] Step 1, roll the H08A low carbon steel strip with a width of 5mm and a thickness of 0.08mm into a U-shaped steel strip, mix Ta wire, iron powder and graphite powder evenly, then put the mixture into the U-shaped steel strip, and then put the U-shaped steel strip Steel strip encapsulation and rolling to obtain metal fibers with an outer diameter of 1 mm;

[0035] The mass percentage of Ta wire in the mixture is 82.7%, the mass percentage of iron powder is 12%, and the mass percentage of graphite powder is 5.3%; 5μm;

[0036] Step 2, weave the metal fibers prepared in step 1 into a fiber mesh prefabricated body, and the distance between the fibrous reinforcements in the thickness direction d 1 = 3mm, distance d between transverse fibrous reinforcements 2 = 2mm, longitudinal fibrous reinforcement spacing d 3 = 2mm;

[0037] Step 3, using an intermediate fr...

Embodiment 2

[0050] The preparation of an impact-resistant and wear-resistant composite liner comprises the following steps:

[0051] Step 1, roll the H08A low carbon steel strip with a width of 4mm and a thickness of 0.06mm into a U-shaped steel strip, mix Ti wire, iron powder and graphite powder evenly, then put the mixture into the U-shaped steel strip, and then put the U-shaped steel strip Steel strip encapsulation and rolling to obtain metal fibers with an outer diameter of 1.5mm;

[0052] The mass percentage of Ti wire in the mixture is 60.1%, the mass percentage of iron powder is 28.9%, and the mass percentage of graphite powder is 11%; 5μm;

[0053] Step 2, weave the metal fibers prepared in step 1 into a fiber mesh prefabricated body, and the distance between the fibrous reinforcements in the thickness direction d 1 = 3mm, distance d between transverse fibrous reinforcements 2 = 2mm, longitudinal fibrous reinforcement spacing d 3 = 2mm;

[0054] Step 3, using an intermediate ...

Embodiment 3

[0066] The preparation of an impact-resistant and wear-resistant composite liner comprises the following steps:

[0067] Step 1, roll the H08A low carbon steel strip with a width of 6mm and a thickness of 0.1mm into a U-shaped steel strip, mix Nb wire, iron powder and graphite powder evenly, then put the mixture into the U-shaped steel strip, and then put the U-shaped steel strip Steel strip encapsulation and rolling to obtain metal fibers with an outer diameter of 2mm;

[0068] The mass percentage of Nb wire in the mixture is 72.5%, the mass percentage of iron powder is 18.8%, and the mass percentage of graphite powder is 8.7%; 5μm;

[0069] Step 2, weave the metal fibers prepared in step 1 into a fiber mesh prefabricated body, and the distance between the fibrous reinforcements in the thickness direction d 1 = 3mm, distance d between transverse fibrous reinforcements 2 = 3mm, longitudinal fibrous reinforcement spacing d 3 = 3mm;

[0070] Step 3, using an intermediate fr...

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Abstract

The invention discloses an impact-resistant and wear-resistant composite liner, which comprises a superimposed composite layer and a high-manganese steel layer. The composite layer is composed of a fibrous reinforcement and a high-manganese steel matrix. The fibrous reinforcement includes a low-carbon steel transition layer, Carbide reinforcement phase, high-toughness metal fiber and steel matrix, carbide reinforcement phase is distributed around high-toughness metal fiber, and low-carbon steel transition layer is located on the outermost side of the fibrous reinforcement. The invention also discloses a preparation method of an impact-resistant and wear-resistant composite liner. The prepared impact-resistant and wear-resistant composite liner is strengthened and toughened by fiber-reinforced reinforcement, ductile metal fiber, and carbide-reinforced phase. The effect of high modulus and high hardness of the material reinforcement phase improves the strength and wear resistance of the liner; the steel matrix and high-toughness metal fibers connected in the fibrous reinforcement can increase the damage tolerance of the liner and improve the toughness; low carbon steel transition The inside and outside of the layer are homogeneous steel matrix, and the macroscopic interface is well bonded, which can effectively improve the load transfer and release the stress.

Description

technical field [0001] The invention belongs to the technical field of wear-resistant materials, and relates to an impact-resistant and wear-resistant composite liner and a preparation method thereof. Background technique [0002] Wear-resistant linings are widely used in metallurgy, mining, building materials, chemicals and other industrial fields. With the development of large-scale, high-efficiency and high-speed related equipment, higher requirements are put forward for the performance of lining boards. For example, the liner used in the ball mill is directly subjected to high impact load and strong wear from the grinding body and materials during service, so the liner is required not only to have high strength and good wear resistance, but also to have excellent impact resistance performance. [0003] At present, the preparation technology of the liner is mainly the surface modification technology and the melting and casting composite technology. The surface modifica...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C47/18C22C49/14B32B15/18
CPCC22C47/18C22C49/14B32B15/18
Inventor 钟黎声白海强吕振林武宏许梦婷赵梓源
Owner XIAN UNIV OF TECH
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