Preparation method of graphene-chromium-titanium-aluminum composite material and its application in cutting tools

An aluminum composite material, graphene technology, applied in the direction of metal material coating process, coating, etc., to achieve the effect of large specific surface area, improved comprehensive quality, high tensile modulus and ultimate strength

Active Publication Date: 2019-05-10
LUOYANG INST OF SCI & 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 overcome the deficiency that the hard coating and soft coating of existing coating materials cannot be combined, and to prepare a coating that can not only improve the bonding strength with the substrate, but also have comprehensive physical and mechanical properties of various coating materials. The preparation method of the required graphene-chromium-titanium-aluminum composite material and its application in cutting tools

Method used

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  • Preparation method of graphene-chromium-titanium-aluminum composite material and its application in cutting tools
  • Preparation method of graphene-chromium-titanium-aluminum composite material and its application in cutting tools
  • Preparation method of graphene-chromium-titanium-aluminum composite material and its application in cutting tools

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preparation example Construction

[0032] The preparation method of graphene-chromium-titanium-aluminum composite material comprises the following steps: step 1, select nanometer graphene powder, and place it in the hydrofluoric acid aqueous solution that concentration is 1.6wt%, 60~80Hz ultrasonic wave, at 80 Stir at a speed of ~150r / min for 50~70min, let stand for 60~90min, pour out the upper layer solution and floating impurities, add deionized water to the obtained precipitate for washing, let stand for 60~90min and pour out the upper layer solution again, Add deionized water again and wash multiple times until the pH value of the upper layer solution is greater than 6.5 to obtain the graphene nano powder after pickling; the graphene nano powder after the acid washing is washed with absolute ethanol to obtain pretreated graphite Graphene nanopowder, spare; the average thickness of the selected nanographene powder is less than 3nm, the diameter of the sheet is 1~5μm, and the specific surface area is 40~60m 2...

Embodiment 1

[0047] The application of a graphene-chromium-titanium-aluminum composite material on cemented carbide-based cutting tools. Through laser beam radiation, it melts together with the surface material of the cutting tool and then solidifies rapidly, so that the dilution rate is small and the compatibility with the cutting tool material is good. The surface coating is actually a highly dense bonded graphene composite cladding layer, which organically combines the tool base material and the coating material. Thus, the comprehensive properties of the tool such as wear resistance, corrosion resistance, and oxidation resistance are significantly improved, and the purpose of tool surface repair or improvement is realized. The main preparation conditions are: refined graphene nano powder accounts for 5% of the total mass percentage, Ti powder accounts for 20% of the total mass percentage, Al powder accounts for 20 mass percentage, Cr powder accounts for 55% of the total mass percentage, ...

Embodiment 2

[0064] The application of a graphene-chromium-titanium-aluminum composite material on high-speed steel-based cutting tools. Through laser beam radiation, it melts together with the surface material of the cutting tool and then solidifies rapidly to obtain a low dilution rate and good compatibility with the cutting tool material. Surface coating, the surface coating is actually a highly dense bonded graphene composite cladding layer, which organically combines the tool base material and coating material. Thus, the comprehensive properties of the tool such as wear resistance, corrosion resistance, and oxidation resistance are significantly improved, and the purpose of tool surface repair or improvement is realized. The main preparation conditions are: refined graphene nano powder accounts for 10% of the total mass percentage, Ti powder accounts for 22% of the total mass percentage, Al powder accounts for 23% by mass, Cr powder accounts for 45% of the total mass percentage, laser ...

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Abstract

The preparation method of graphene-chromium-titanium-aluminum composite material and its application on cutting tools, through laser beam radiation, make it melt together with the surface material of the cutting tool and then solidify rapidly, so as to obtain a compound with a small dilution rate and good compatibility with the cutting tool material Surface coating, the surface coating is actually a highly dense bonded graphene composite cladding layer, which organically combines the tool base material and coating material. Thus, the comprehensive properties of the tool such as wear resistance, corrosion resistance, and oxidation resistance are significantly improved, and the purpose of tool surface repair or improvement is realized. The main preparation conditions are: the percentage of graphene nano powder in the total mass of the composite material is 5-15%, the percentage of Ti powder in the total mass of the composite material is 20-25%, and the percentage of Al powder in the total mass of the composite material is 20-25%. %, Cr powder accounts for 35-55% of the total mass of the composite material.

Description

technical field [0001] The invention relates to the technical field of composite coating materials, in particular to a preparation method of a graphene-chrome-titanium-aluminum composite material and its application on cutting tools. Background technique [0002] Since the tool coating technology came out, it has played a very important role in the improvement of tool performance and the progress of processing technology. The proportion of coated tools in the tool has exceeded 50%. According to the nature of the coating material, coated tools can be divided into two categories, namely "hard" coated tools and "soft" coated tools. The main goal of "hard" coating tools is high hardness and wear resistance. Typical "hard" coating materials include TiC, TiN, TiCN, A1 2 o 3 and TiAIN, etc.; the main goal pursued by "soft" coating tools is low friction coefficient, also known as solid lubricating coating tools, which is a kind of self-lubricating tools, such as MoS 2 and WS 2 C...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F1/00C22C30/00C22C32/00C22C27/06C23C24/10
CPCB22F1/0003C22C27/06C22C30/00C22C32/0084C23C24/103
Inventor 李彬王红
Owner LUOYANG INST OF SCI & TECH
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