Wear resistant carbide coating layer and preparation method thereof

A carbide and coating technology, applied in the direction of coating, metal material coating process, solid diffusion coating, etc., can solve the problems of low coating bonding strength, low production efficiency, and strict production equipment requirements.

Active Publication Date: 2015-04-22
SUZHOU FURUTA AUTOMATION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] At present, the methods for preparing carbide coatings include chemical vapor deposition, physical vapor deposition, thermal spraying, thermal diathermy, etc., but these methods have the disadvantages of demanding production equipment, low production efficiency, and low coating bonding strength.

Method used

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  • Wear resistant carbide coating layer and preparation method thereof
  • Wear resistant carbide coating layer and preparation method thereof
  • Wear resistant carbide coating layer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0086] Embodiment 1: the preparation method of carbide coating, comprises the steps:

[0087] 1. Prepare a titanium plate 1 first, wherein the purity of titanium should be controlled at 99.7%. The titanium plate 1 is first surface treated, and the steps are as follows:

[0088] The first step is pickling, choose 300ml / L hydrochloric acid, and then rinse with running water;

[0089] In the second step of pickling, choose 300ml / L hydrofluoric acid, and then rinse with running water;

[0090] The third step is surface grinding, using 800 mesh Al 2 o 3 Sandpaper and finally ultrasonic cleaning with alcohol. The thickness of the titanium plate 1 is controlled at 0.2 mm.

[0091] 2. The Q275A substrate is smelted into molten steel, and the temperature is controlled at 1630°C.

[0092] 3. Pour the above-mentioned molten steel into the sand mold 2 on which the above-mentioned titanium plate 1 is placed, as figure 1 As shown, the pouring temperature is controlled at 1630°C, the p...

Embodiment 2

[0099] Embodiment 2: the preparation method of carbide coating, comprises the steps:

[0100] 1. First prepare a titanium plate 1, wherein the purity of titanium should be controlled at 99.8%. The titanium plate 1 should be surface treated first, the steps are as follows:

[0101] In the first step of pickling, choose 60ml / L phosphoric acid, and then rinse with running water;

[0102] In the second step of pickling, choose 200ml / L sulfuric acid, and then rinse with running water;

[0103] The third step is surface grinding, using 1000 mesh Al 2 o 3 Sandpaper and finally ultrasonic cleaning with alcohol. The thickness of the titanium plate 1 is controlled at 1.5mm.

[0104] 2. The Q255AF base material is smelted into molten steel, and the temperature is controlled at 1630°C.

[0105] 3. Pour the above molten steel into the sand mold 2 with the above titanium plate 1 placed, the pouring temperature is controlled at 1630°C, the pouring speed is 0.8m / s, and the pouring time is...

Embodiment 3

[0113] Embodiment 3: the preparation method of carbide coating, comprises the steps:

[0114] 1. First prepare a titanium plate 1, wherein the purity of titanium should be controlled at 99.8%. The titanium plate 1 should be surface treated first, the steps are as follows:

[0115] The first step is pickling, choose 120ml / L hydrogen peroxide, and then rinse with running water;

[0116] In the second step of pickling, choose 240ml / L hydrogen peroxide, and then rinse with running water;

[0117] The third step is surface grinding, using 1200 mesh Al 2 o 3 Sandpaper and finally ultrasonic cleaning with alcohol. The thickness of the titanium plate 1 is controlled at 2.5mm.

[0118] 2. The Q255AF base material is smelted into molten steel, and the temperature is controlled at 1630°C.

[0119] 3. Pour the above molten steel into the sand mold 2 with the above titanium plate 1 placed, the pouring temperature is controlled at 1630°C, the pouring speed is 0.7m / s, and the pouring t...

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Abstract

The invention discloses a wear resistant carbide coating layer. The wear resistant carbide coating layer comprises a pseudo-single crystal phase TiC compact ceramic layer, and can further comprise a micron TiC ceramic layer and a fused layer of TiC and a matrix. The pseudo-single crystal phase TiC compact ceramic layer, the micron TiC ceramic layer and the fused layer of TiC and the matrix are gradiently distributed in sequence. The wear resistant carbide coating layer can be applied to the surface of a metal matrix. A metal matrix and titanium compound body obtained through casting is externally leaded in an external carbon source, and is heated and insulated to form the carbide coating layer on the surface of the metal matrix; and the coating layer and the matrix are metallurgically bonded, so that the binding force is strong, the problems of weak binding force and easy particle dropping due to traditional non-metallurgical bonding between hard particles and the metal matrix are overcome, and the surface wear resistance of the metal matrix is largely improved.

Description

technical field [0001] The invention relates to a wear-resistant carbide coating and a preparation method thereof, in particular to a composite wear-resistant carbide coating and a preparation method thereof, in particular to a composite wear-resistant carbide coating applied to the surface of carbon steel and its preparation method. Background technique [0002] Carbide materials have the characteristics of high hardness and excellent wear resistance. Covering the surface of metal alloy substrates by coating can improve the wear resistance and life of parts made of substrate materials. Among them, TiC is a common coating material, which has the following characteristics: [0003] (1) It has excellent physical and chemical properties such as low density, high strength, high elastic modulus, oxidation resistance, wear resistance and corrosion resistance; [0004] (2) The growth tendency is small during the sintering process, and the particles are generally round, which is a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D19/00C23C8/64
CPCB22D19/16C23C8/64
Inventor 许云华赵娜娜钟黎声梁淑华燕映霖叶芳霞王娟邹军涛肖鹏
Owner SUZHOU FURUTA AUTOMATION TECH
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