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Method for improving wear resistance and corrosion resistance of shaft sleeve

A technology of corrosion resistance and shaft sleeve, which is applied in the direction of transportation and packaging, metal processing equipment, etc., can solve the problems of insufficient wear resistance and corrosion resistance, achieve enhanced corrosion resistance, improve wear resistance and corrosion resistance, and increase service life Effect

Pending Publication Date: 2022-07-12
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the problem of insufficient wear resistance and corrosion resistance of the existing shaft sleeve, the present invention provides a method for improving the wear resistance and corrosion resistance of the shaft sleeve, that is, the shaft sleeve is designed as an integrally formed hollow cylindrical stainless steel matrix inner layer and ceramic particles- Stainless steel composite outer layer, ceramic particle-stainless steel composite outer layer is the wear-resistant and anti-corrosion layer during work, improving its wear-resistant and anti-corrosion performance

Method used

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  • Method for improving wear resistance and corrosion resistance of shaft sleeve
  • Method for improving wear resistance and corrosion resistance of shaft sleeve

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Embodiment 1

[0023] Embodiment 1: a method for improving the wear resistance and corrosion resistance of a bushing, the bushing comprises a hollow cylindrical base layer and a composite layer (see figure 1 ), the hollow cylinder base layer is a stainless steel layer, and the composite layer is a ceramic particle-stainless steel composite layer (see figure 2 ), the composite layer is clad and arranged on the outside of the hollow cylinder base layer, and the thickness of the composite layer is twice that of the base layer;

[0024] Specific steps are as follows:

[0025] (1) Put the metal powder (iron powder) with a particle size of 50 μm and the titanium carbide ceramic particles with a particle size of 50 μm into a drum-type ball-milling tank, and perform ball milling and mixing at a rotating speed of 100 r / min to obtain the cermet powder; The mass ratio of powder (iron powder) to titanium carbide ceramic particles is 1:5;

[0026] (2) Mix the cermet powder and the binder (water glass ...

Embodiment 2

[0029] Embodiment 2: a method for improving the wear resistance and corrosion resistance of a bushing, the bushing comprises a hollow cylindrical base layer and a composite layer (see figure 1 ), the hollow cylinder base layer is a stainless steel layer, and the composite layer is a ceramic particle-stainless steel composite layer (see figure 2 ), the composite layer is clad and arranged on the outside of the hollow cylinder base layer, and the thickness of the composite layer is 2.5 times that of the base layer;

[0030] Specific steps are as follows:

[0031] (1) Put the metal powder (cobalt powder) with a particle size of 30 μm and the tungsten carbide ceramic particles with a particle size of 30 μm into a drum-type ball milling tank, and perform ball milling and mixing at a rotating speed of 120 r / min to obtain the cermet powder; The mass ratio of powder (cobalt powder) to tungsten carbide ceramic particles is 1:5;

[0032] (2) Mix the cermet powder and the binder (alum...

Embodiment 3

[0035] Embodiment 3: a method for improving the wear resistance and corrosion resistance of a bushing, the bushing comprises a hollow cylindrical base layer and a composite layer (see figure 1 ), the hollow cylinder base layer is a stainless steel layer, and the composite layer is a ceramic particle-stainless steel composite layer (see figure 2 ), the composite layer is clad and arranged on the outside of the hollow cylinder base layer, and the thickness of the composite layer is 3 times that of the base layer;

[0036] Specific steps are as follows:

[0037] (1) Put metal powder (nickel powder) with a particle size of 10 μm, titanium carbide ceramic particles with a particle size of 10 μm, and tungsten carbide ceramic particles with a particle size of μm into a drum-type ball mill, and carry out the process at a rotational speed of 150 r / min. Ball milling and mixing to obtain cermet powder; wherein the mass ratio of metal powder (nickel powder), titanium carbide ceramic par...

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Abstract

The invention relates to a method for improving wear resistance and corrosion resistance of a shaft sleeve and belongs to the technical field of shaft sleeves. The shaft sleeve comprises a hollow cylindrical base body layer and a composite layer, and the composite layer is arranged on the outer side of the hollow cylindrical base body layer in a wrapping mode. Metal powder and ceramic particles are subjected to ball milling and uniform mixing, and metal ceramic powder is obtained; the method comprises the following steps: uniformly mixing metal ceramic powder and an adhesive, filling the mixture into an automatic tablet press, pressing into a hollow cylindrical structure, and roasting to obtain a metal ceramic particle hollow cylindrical preform; and the metal ceramic particle hollow cylindrical prefabricated body is placed in a shaft sleeve mold, stainless steel melt is poured, centrifugal casting is carried out to enable the stainless steel melt to be infiltrated into the metal ceramic particle hollow cylindrical prefabricated body, and the hollow cylindrical base body layer and the composite layer of the shaft sleeve are integrally formed. The ceramic particle-stainless steel composite layer can improve wear resistance and corrosion resistance of the shaft sleeve.

Description

technical field [0001] The invention relates to a method for improving the wear resistance and corrosion resistance of a shaft sleeve, belonging to the technical field of shaft sleeves. Background technique [0002] Slurry pump is the main equipment for conveying solid slurry, which is widely used in transportation, water conservancy, coal, electric power, metallurgy and other industries. Slurry pumps are mainly used to transport solid-liquid mixtures with high concentration of solid particles, such as cement slurry, mortar, limestone slurry, etc. The structure of the slurry pump is centrifugal or mixed flow. Since the solid particles in the conveying medium act on the inner wall of the pump in different forms, the flow passage parts are easily worn. After a long period of use, the slurry pump will wear out. Especially in the process of conveying solid mixtures such as sediment and concentrate, the wear of the flow channel components is more serious. When the wear reaches a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D13/00B22D19/08B22F1/105B22F3/02B22F3/10B22F3/26B22F5/12B22F9/04
CPCB22D13/00B22D19/085B22F3/02B22F3/26B22F5/106B22F3/10B22F9/04B22F2009/043
Inventor 卢德宏杜健明柏瑶一
Owner KUNMING UNIV OF SCI & TECH