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Material of guide sliding shoe of coal-winning machine and preparation method of material

A technology for guiding sliding shoes and shearers, which is applied in metal material coating technology, earthwork drilling, cutting machinery, etc., can solve the problem of high-power shearers, high material costs and processing costs, To solve problems such as thin carburized layer, achieve good comprehensive mechanical properties, high degree of automation, and improve strength

Inactive Publication Date: 2011-09-21
CHINA UNIV OF MINING & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a shearer guide shoe material and a preparation method thereof to solve the problem that the ZG40Cr material can only be used in some occasions where the load is relatively light; the wear resistance of the 42CrMo material cannot meet the requirements of a high-power shearer; 18Cr2Ni4W material cost and processing cost are relatively high, its carburized layer is thin, and there is a problem that it is brittle under heavy pressure

Method used

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  • Material of guide sliding shoe of coal-winning machine and preparation method of material
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  • Material of guide sliding shoe of coal-winning machine and preparation method of material

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Effect test

Embodiment 1

[0022] Embodiment 1: During the preparation process of the shoe material, it includes the base material and the cladding material;

[0023] The base material is selected as No. 45 steel, and the used No. 45 steel is quenched and tempered;

[0024] The chemical composition of iron-based alloy powder as cladding material is shown in Table 1.

[0025] Table 1 Chemical composition of cladding materials

[0026] element

C

Ti

Cr

mn

Fe

Mass percentage%

0.45

0.4

4.0

1.2

margin

[0027] The particle size range of iron-based alloy powder is 106~180μm.

[0028] A preparation method for a sliding shoe material, comprising the steps of:

[0029] The first step: pretreatment: roughening the surface: sandblasting the surface of the base material, and making the base surface have a certain roughness through sandblasting, so as to facilitate the mosaic and filling effect of the alloy powder and the base material surface; purify the su...

Embodiment 2

[0031] Example 2: To prepare plasma cladding Cr4MnTi shearer shoe material, it is necessary to use base material and cladding material.

[0032] Based on the above, the base material is No. 45 steel, and the cladding material is iron-based alloy powder, in which the mass fraction of C accounts for 0.45%, Ti accounts for 0.4%, Cr accounts for 4.0%, Mn accounts for 1.2%, and Fe accounts for 93.95%.

[0033] Based on the above, a plasma cladding Cr4MnTi coal shearer slipper material, its preparation method includes the following steps: pretreatment: roughening the surface: making the cladding surface have a certain roughness by sandblasting, so as to facilitate the powder and Mosaic and filling effect on the surface of the substrate. Purify the surface: use trichlorethylene or carbon tetrachloride solvent to clean and remove various impurities and oil stains on the surface to be clad, so as to facilitate the wetting and metallurgical bonding of the powder and the surface of the s...

Embodiment 3

[0035] Embodiment 3: Different from Embodiment 1, the temperature of substrate preheating is set to 130°C.

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Abstract

The invention relates to a material of a guide sliding shoe of a coal-winning machine and a preparation method of the material, and belongs to a sliding shoe material and a preparation method thereof. The material consists of a ferrous alloy serving as a base body material and Fe-Cr-Mn-Ti ferrous alloy powder serving as a cladding material. The preparation method of the material comprises the following steps of: pretreating: coarsening a surface: performing blast sanding on a cladded surface so that the cladded surface has certain roughness to facilitate embedding and packing between the powder and the surface of the base material, and purifying the surface: washing by using a trichloroethylene or carbon tetrachloride solvent to remove various impurities and greasy dirt from the cladded surface so as to facilitate humidification and metallurgy combination between the powder and the surface of the base material; and preheating the base body: before cladding, and preheating the pretreated base body, cladding the Fe-Cr-Mn-Ti ferrous alloy powder on the surface of the ferrous alloy by plasmas so as to prepare the plasma cladded material of the sliding shoe of the coal-winning machine,wherein the thickness of a cladding layer is 4 to 5 millimeters. The material has the advantages of high comprehensive mechanical performance, low friction coefficient, high adhesive wear and abrasive wear resistance and the like.

Description

technical field [0001] The invention relates to a sliding shoe material and a preparation method thereof, in particular to a shearer guide sliding shoe material and a preparation method thereof. Background technique [0002] Sliding shoe is an important part on the base of the shearer that bears low speed and heavy load and requires extremely high wear resistance. With the continuous increase of the weight of the shearer, the requirements for the various performances of the sliding shoes are also getting higher and higher. The working environment of the shearer is harsh, and there are multiple factors in the failure form of the guide shoe, and the main failure form is wear and cracking. The performance requirements for the material of the shoe are as follows: (1) Higher strength, less prone to plastic deformation. (2) Good toughness. Sliding boots bear a certain impact during the working process, and have good toughness. On the one hand, it can prevent macro failures such...

Claims

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Application Information

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IPC IPC(8): C23C24/10C21D1/25E21C35/08
Inventor 刘洪涛王路平
Owner CHINA UNIV OF MINING & TECH
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