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High chrome alloy steel with chromium carbide reinforced layer and preparation method of high chrome alloy steel with chromium carbide reinforced layer

A technology of chromium carbide and reinforcement layer, which is applied in metal processing equipment, coatings, manufacturing tools, etc., can solve the problems of uncontrollable size and distribution mode, easy falling off of chromium carbide particles, etc., and achieves easy implementation, simple preparation method, combined firm effect

Active Publication Date: 2016-10-12
XIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The purpose of the present invention is to provide a high chromium alloy steel with a chromium carbide reinforced layer, which solves the problems that the chromium carbide particles in the existing chromium carbide reinforced steel matrix composite materials are easy to fall off, and the size and distribution mode are uncontrollable

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  • High chrome alloy steel with chromium carbide reinforced layer and preparation method of high chrome alloy steel with chromium carbide reinforced layer
  • High chrome alloy steel with chromium carbide reinforced layer and preparation method of high chrome alloy steel with chromium carbide reinforced layer

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preparation example Construction

[0030] The preparation method of the above-mentioned high chromium alloy steel with chromium carbide reinforcement layer specifically comprises the following steps:

[0031] Step 1: cleaning the substrate surface with acetone to obtain a surface-treated substrate;

[0032] Step 2: use a laser drilling machine to carry out laser drilling on the surface-treated substrate obtained in step 1 under vacuum conditions or under the protection of an inert gas, and then pickle. The acid solution used for pickling is 300ml / L volume concentration Any one of hydrochloric acid, 60ml / L phosphoric acid, 120ml / L hydrogen peroxide, 300ml / L hydrofluoric acid or 200ml / L sulfuric acid, then rinse with water until neutral, and finally use ethanol or acetone for ultrasonic cleaning to obtain Washed substrate with depressed tubular body;

[0033] Step 3: Place the cleaned substrate with a depressed tubular body obtained in step 2 in a vacuum carburizing furnace for carburizing at a certain temperatu...

Embodiment 1

[0047] Preparation of micron-sized tubular chromium carbide reinforced 2Cr12 matrix composites

[0048] Step 1: Smelting 2Cr12 alloy steel, especially controlling the carbon content to 0.2%, cleaning the surface of the 2Cr12 alloy steel with acetone to obtain a surface-treated 2Cr12 alloy steel substrate;

[0049] Step 2: Use a laser drilling machine to perform laser drilling on the surface-treated 2Cr12 alloy steel substrate obtained in step 1 under vacuum conditions, with a hole diameter of 30 μm, a hole depth of 20 μm, and a hole spacing of 1000 μm; then pickling, pickling The acid solution used for washing is hydrochloric acid with a volume concentration of 300ml / L, then washed with water to neutrality, and finally ultrasonically cleaned with ethanol to obtain a 2Cr12 alloy steel substrate with a depressed tubular body after cleaning;

[0050] Step 3: Place the cleaned 2Cr12 alloy steel matrix with a depressed tubular body obtained in step 2 in a vacuum carburizing furnace...

Embodiment 2

[0054] Preparation of micron-sized tubular chromium carbide reinforced 5Cr12MoV matrix composites

[0055] Step 1: Smelting 5Cr12MoV alloy steel, especially controlling the carbon content to 0.5%, cleaning the surface of 5Cr12MoV alloy steel with acetone to obtain a surface-treated 5Cr12MoV alloy steel matrix;

[0056] Step 2: Use a laser drilling machine to perform laser drilling on the surface-treated 5Cr12MoV alloy steel substrate obtained in step 1 under the protection of inert gas argon, with a hole diameter of 20 μm, a hole depth of 18 μm, and a hole spacing of 25 μm; The acid solution used for washing and pickling is hydrofluoric acid with a volume concentration of 300ml / L, then rinsed with water to neutrality, and finally uses acetone to perform ultrasonic cleaning to obtain the cleaned 5Cr12MoV alloy steel substrate with a depressed tubular body;

[0057] Step 3: Place the cleaned 5Cr12MoV alloy steel matrix with a depressed tubular body obtained in step 2 in a vacuum...

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Abstract

The invention discloses high chrome alloy steel with a chromium carbide reinforced layer. The high chrome alloy steel with the chromium carbide reinforced layer comprises a matrix. The surface of the matrix is provided with a plurality of sunken tube-shaped bodies. The surface of the matrix and the inner surfaces of the tube-shaped bodies are both provided with the chromium carbide reinforced layers. The matrix is composed of the high chrome alloy steel. A preparation method of the abovementioned composite material comprises the following steps of (1) conducting surface treatment on the matrix; (2) conducting laser drilling, acid pickling and ultrasonic cleaning; (3) carburizing the obtained cleaned matrix with the sunken tube-shaped bodies in a vacuum carburizing furnace to obtain a complex with the micron-grade chromium carbide reinforced layer; and finally (4) conducting aftertreatment to obtain the high chrome alloy steel with the chromium carbide reinforced layer. According to the high chrome alloy steel and the method, the problems that in the prior chromium carbide reinforced steel matrix composite material, chromium carbide particles are easy to fall off and uncontrollable of size and distributing mode can be solved, the overall mechanical properties, the heat resistance and the wear resistance of the composite material can be improved and the preparation method is simple and easy to implement.

Description

technical field [0001] The invention belongs to the technical field of steel-based surface composite materials, and in particular relates to a high-chromium alloy steel with a chromium carbide reinforcement layer, and also relates to a preparation method of the composite material. Background technique [0002] Generally, when the proportion of chromium in steel exceeds 10%, it is called high-chromium alloy steel. High-chromium alloy steel generally has high hardness and high wear resistance. High-chromium alloy steel is often used as raw material for bearing steel and grinding ball steel. As one of the most important die steels, high-chromium alloy steels are widely used in die, tool, metallurgy and other industries due to their advantages of high hardness, high wear resistance and high heat resistance. However, its strength decreases significantly as the size increases, which directly affects its service life and limits its application range. Chromium carbide has the advan...

Claims

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Application Information

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IPC IPC(8): C23C8/02C23C8/22C23C8/80B23K26/386
CPCC23C8/02C23C8/22C23C8/80B23K26/389
Inventor 钟黎声王昕许云华燕映霖赵梓源陈利萍宋珂赵娜娜
Owner XIAN UNIV OF TECH
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