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A preparation method of surface-treated ZTA particle-reinforced steel-based composite grinding roller

A particle enhancement and surface treatment technology, used in vacuum evaporation plating, coating, sputtering plating, etc., can solve the problems of low bonding strength, affecting the large-scale application of wear-resistant parts, poor bonding, etc., and achieve enhanced interface bonding performance, ensuring service safety, high bonding and impact strength

Active Publication Date: 2021-03-16
XI AN JIAOTONG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the poor binding between ZTA particles and iron base, the high chromium cast iron prepared by casting infiltration method is simply mechanically combined with ZTA, and the bonding strength is low, which seriously affects the wear-resistant parts under harsh actual working conditions. Scale application

Method used

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  • A preparation method of surface-treated ZTA particle-reinforced steel-based composite grinding roller
  • A preparation method of surface-treated ZTA particle-reinforced steel-based composite grinding roller
  • A preparation method of surface-treated ZTA particle-reinforced steel-based composite grinding roller

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preparation example Construction

[0037] A method for preparing a surface-treated ZTA particle-reinforced steel-based composite grinding roller of the present invention comprises the following steps:

[0038] S1. Soak the ZTA particles in acetone for 15-30 minutes, pickle them, then wash them with acetone for 8-20 minutes by ultrasonic waves, rinse them with deionized water, and dry them;

[0039] S2, ZTA and SiO after drying 2 Put the small particles into the ball mill for low-speed ball milling for 10-40min, and the ball-milling speed is 60-180r / min, so that the surface of the ZTA particles is micro-roughened, increasing the attachment points of Cr in the subsequent multi-arc ion plating process, and improving the surface of ZTA. The plating efficiency is high, then filter the ZTA particles with a 10-50 mesh sieve, and clean them with alcohol;

[0040]S3. Use the method of multi-arc ion plating to plate metal chromium on the surface of ZTA particles, use the method of arc discharge, use the chromium target ...

Embodiment 1

[0051] 1) First, soak ZTA in acetone for 15 minutes, pickle the ZTA particles, then clean them with acetone for 10 minutes by ultrasonic waves, wash them with deionized water, and dry the treated ZTA particles in a vacuum drying oven;

[0052] 2) Secondly, the dried ZTA and SiO 2 Put the small particles into a 60r / min planetary ball mill for 10 minutes of low-speed ball milling, and then filter the ZTA particles with a 10-mesh sieve;

[0053] 3) Subsequently, metal chromium was plated on the surface of the dried ZTA particles by multi-arc ion plating, and the vacuum degree of the arc discharge deposition chamber was selected for the plating process to be about 7.0×10 -3 Pa, the substrate temperature is about 40°C, the bias voltage of multi-arc ion plating is 100V, the duty cycle is 50%, the current size is 50A, the plating time is 30min, and the thickness of the Cr layer is 9.6μm;

[0054] see figure 1 , figure 1 It is a cross-sectional view of the multi-arc ion plating vac...

Embodiment 2

[0059] 1) First soak ZTA in acetone for 18 minutes, pickle the ZTA particles, then clean them with acetone for 12 minutes by ultrasonic waves, wash them with deionized water, and dry the treated ZTA particles in a vacuum drying oven;

[0060] 2) Secondly, the dried ZTA and SiO 2 Put the small particles into an 80r / min planetary ball mill for 15 minutes of low-speed ball milling, and then filter the ZTA particles with a 15-mesh sieve;

[0061] 3) Subsequently, metal chromium was plated on the surface of the dried ZTA particles by multi-arc ion plating, and the vacuum degree of the arc discharge deposition chamber was selected for the plating process to be about 8.0×10 -3 Pa, the substrate temperature is about 45°C, the bias voltage of multi-arc ion plating is 110V, the duty cycle is 55%, the current is 55A, and the plating time is 40min;

[0062] 4) Put the ZTA particles pre-coated with Cr layer into alcohol for ultrasonic cleaning for 18 minutes, then uniformly mix the ZTA pa...

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Abstract

The invention discloses a preparation method for a surface treatment ZTA particle enhanced steel-based composite grinding roller. The surfaces of ZTA particles are subjected to micro roughening; attachment points of the ZTA particles during Cr plating are improved, the plating efficiency is improved, and the surfaces of the ZTA particles are subjected to metallization modifying by adopting a micro-arc ion plating method; then a self-made adhering agent is added for sizing, drying treatment is performed so that a prefabricated body of a honeycomb-shaped structure is obtained, and then heat treatment is performed on the honeycomb-shaped prefabricated body so that the bonding strength of the prefabricated body can be improved; and the prefabricated body is placed into a sand box for molten metal casting, and after cooling, the grinding roller with high abrasion resistance is obtained. According to the preparation method, Cr element plating is performed through physical vapor deposition sothat the bonding manner between the ZTA particles and metal can be improved, interface bonding is converted into metallurgical bonding from simple mechanical bonding, and high bonding and impacting strength is achieved. An abrasion-resistant composite material prepared through the technology of the preparation method has high impacting abrasion resisting performance, and the service safety underharsh working conditions is also guaranteed.

Description

technical field [0001] The invention belongs to the technical field of preparation of wear-resistant materials, and in particular relates to a method for preparing a surface-treated ZTA particle-reinforced steel-based composite grinding roller. Background technique [0002] Large grinding rollers are necessary equipment for crushing materials such as minerals and building materials in mining, metallurgy, cement, electric power and other industries, and grinding rollers are the most consuming wear parts in these equipments. Only in the cement and electric power industries, the annual consumption of large grinding rollers in my country is as high as 800,000 tons, causing economic losses of more than 16 billion yuan. At present, due to poor performance stability, wear resistance and short service life of domestic large-scale grinding rollers, it has become a key factor restricting the efficiency of material crushing. Therefore, most of the domestic large-scale grinding rollers ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22D19/08C23C14/02C23C14/32C23C14/18C23C14/58
CPCB22D19/085C23C14/02C23C14/18C23C14/325C23C14/5806C23C14/5893
Inventor 高义民亦雨奇李烨飞李聪李博郑巧玲
Owner XI AN JIAOTONG UNIV
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