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Metallurgy roller, surface wear-resistant coating of metallurgy roller, alloy spraying powder and preparation method

A technology of spraying powder and wear-resistant coating, which is applied in metal rolling, metal rolling, metal processing equipment, etc., and can solve problems such as high cost, pollution of chrome plating process, and complexity

Active Publication Date: 2021-11-26
ANHUI UNIVERSITY OF TECHNOLOGY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to overcome the pollution problems caused by chrome plating on the surface of metallurgical rollers and the problems of complex and high cost of the existing chromium plating process, and provide a metallurgical roller, which has a wear-resistant coating on its surface, alloy spray powder and preparation method

Method used

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  • Metallurgy roller, surface wear-resistant coating of metallurgy roller, alloy spraying powder and preparation method
  • Metallurgy roller, surface wear-resistant coating of metallurgy roller, alloy spraying powder and preparation method
  • Metallurgy roller, surface wear-resistant coating of metallurgy roller, alloy spraying powder and preparation method

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Experimental program
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Effect test

Embodiment 1

[0033] The alloy spraying powder of the alternative metallurgical roller surface chromium plating of the present embodiment, its raw material comprises the component (unit is g) of following percentage by weight: The first component: chromium 60, tungsten 6, manganese 4, molybdenum 5, nickel 10, cobalt 15; Second component: boron carbide 1, cobalt tungsten carbide 4. The ball-to-material ratio is 3:1, the ball milling speed is 50rpm, and the ball milling time is 10min. The alloying temperature is 900°C, and the alloying time is 9h. The sintering pressure is 7Mpa, the sintering temperature is 900°C, the sintering time is 20min, and the heating rate is 50°C·min-1. The diffusion annealing temperature is 750°C, the diffusion annealing time is 2h, and the inert gas is argon. Coating test data see image 3 .

Embodiment 2

[0035] The alloy spraying powder that replaces metallurgical roller surface chromium plating of the present embodiment, its raw material comprises the component (unit is g) of following percentage by weight: The first component: chromium 61, tungsten 8, manganese 4, molybdenum 2, nickel 8, cobalt 17. The second component: boron carbide 2, cobalt tungsten carbide 3. The ball-to-material ratio is 3:1, the ball milling speed is 70rpm, and the ball milling time is 10min. The alloying temperature is 900°C, and the alloying time is 12h. The sintering pressure is 8Mpa, the sintering temperature is 950°C, the sintering time is 25min, and the heating rate is 45°C·min-1. The diffusion annealing temperature is 800° C., the diffusion annealing time is 1 h, and the inert gas is nitrogen. Coating test data see image 3 .

Embodiment 3

[0037]The alloy spraying powder of the chromium-plated alloy coating powder that replaces the metallurgical roller surface of the present embodiment, its raw material comprises the following components by weight percent (unit is g): first component chromium 62, tungsten 7, manganese 6, vanadium 1, nickel 11, cobalt 13 , the second component, boron carbide 2, cobalt tungsten carbide 4. The ball-to-material ratio is 3:1, the ball milling speed is 50rpm, and the ball milling time is 8min. The alloying temperature is 900°C, and the alloying time is 10h. The sintering pressure is 9Mpa, the sintering temperature is 1000℃, the sintering time is 30min, and the heating rate is 42.5℃·min-1. The diffusion annealing temperature is 750°C, the diffusion annealing time is 3h, and the inert gas is argon. Coating test data see image 3 .

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Abstract

The invention discloses a metallurgical roller, a surface wear-resistant coating thereof, alloy spraying powder and a preparation method, and belongs to the technical field of metal materials and powder metallurgy. The alloy spraying powder for replacing chromium plating on the surface of the metallurgical roller is high-chromium-content wear-resistant powder, and comprises the following raw materials in percentage by weight: a first component: 60-70% of chromium, 8-15% of at least one of molybdenum, tungsten, vanadium and manganese, and 15-25% of at least one of nickel and cobalt; a second component: at least one of boron carbide, boron nitride, titanium carbide and titanium nitride, wherein the total amount of the second component is 1-3% of the weight of the first component; and cobalt tungsten carbide, wherein the adding amount of the cobalt tungsten carbide is 3-5% of the weight of the first component. The technical scheme provided by the invention not only eliminates various environmental pollution problems caused by chromium electroplating, but also adopts a thermal spraying process, so that the operation is simple, the production efficiency is high, and the performance is relatively good.

Description

technical field [0001] The invention belongs to the technical field of metal materials and powder metallurgy, and more specifically relates to a metallurgical roller, its surface wear-resistant coating, alloy spraying powder and a preparation method. Background technique [0002] Chromium plating is a traditional surface plating technology that has been used for nearly a hundred years. The main material of the chrome plating layer is chromium, which is a silver-white shiny metal, and is the metal with the highest hardness in nature, and has good corrosion resistance, so it is often used as a decorative coating or a wear-resistant and corrosion-resistant coating for protecting mechanical parts. Layer, also used for repair of broken parts. [0003] However, the electrochrome plating process can cause serious environmental problems. It is not chromium itself that causes environmental problems, but the process of chromium plating. Chromium is an inactive element that can be sa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C24/04C22C27/06C22C32/00B21B27/00
CPCC23C24/04C22C27/06C22C32/0005B21B27/00
Inventor 吴朝阳赵乾方钊方长春黄贞益黄华钦刘昊
Owner ANHUI UNIVERSITY OF TECHNOLOGY