Micro-nano-alloy bimetal composite material preparation technique and device thereof

Abstract

The invention relates to a micro-nano-alloy bimetal composite material preparation technique and a device thereof; one of wear-resistant and corrosion-resistant ferrous metal material, non-ferrous metal material and various self-fluxing alloy is prepared into power; then, the powder is added with less than or equal to 0.8% of one or combination in CeO2, Y2O3 and La2O3, 0.3-1.5% of MgO, 0.3-1.8% of CaF2, 0.0-1.5% of B, 0.1-0.8% of Nb, 0.1-1.0% of Ti, 0.1-2.0% of grain refining and recrystallization inhibitor according to the mass percent; or the powder is added with 1-40% of carbide, nitride, micro-nano or nano particles of boride; and the mixture is put into a high-energy stirring ball grinding mill for grinding and ball milling, so that the micro-nano or nano alloy powder can be prepared. A variable frequency induction heating device is adopted for cladding and melting vacuum or inert gas, so that a workpiece can be melted and coated with a micro-nano or nano scale alloy cladding layer which has the grain size of 0.1-35mm and is wear-resistant and corrosion-resistant, and the bimetal composite material can be prepared. The invention overcomes the defects in various coating techniques in China at present, can complete the preparation of the workpiece with the cladding layer having high thickness for once, does not need repeated coating and sintering, has high material utilization rate, low machining allowance and preparation cost, simple preparation technique and high production efficiency.

Description

technical field [0001] The invention belongs to the technical field of metal composite materials, and relates to a micro-nano alloy bimetal composite material and a preparation method thereof, in particular to a preparation process and equipment for a micro-nano alloy bimetal composite material. Background technique [0002] Bimetallic composite materials are composites of two or more metal materials with different properties through a certain process, so that different parts of the material or parts have different properties to meet the requirements of use. It is different from dispersion-strengthened materials. Layered composite materials are not one material dispersed in another material, but each component material forms one or several wholes, and the components are composited by interface bonding. One, the composite methods mainly include liquid-solid composite, liquid-liquid composite, solid-solid composite and so on. It is usually an alloy with high mechanical proper...

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Problems solved by technology

[0016] The purpose of the present invention is to make full use of the low melting point properties of nano-metals, by adding certain properties in nano-metal alloys, it can suppress cladding coating cracks, reduce the sensitivity of cladding coating cracks, and improve the wear resistance and corrosion resistance of coatings. Additives for corrosion resistance, oxidation resistance and thermal shock resistance can solve the shortcomings of existing cladding materials and nanomaterials, and provide a new type of bimetallic composite material preparation process and equipment to make the material into nano or micro-nano bimetal Composite materials, realize the effective compounding of nano-metal alloys and metal materials, and give full play to the excellent characteristics of nano-materials, so as to prepare new high-performance nano-metals with better performance that can meet the preparation of thin-layer cladding layers and large-thickness cladding layers at the same time Alloy surface composite material, obtain a large thickness nano-alloy bimetallic composite material preparation process and equipment with simple preparation process, low cost, and good product performance

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