Nano composite anti-wear coating composition used for hot forging die and application thereof

Abstract

The invention discloses a nanometer composite abrasion-resistant coating combination used for a hot forging mold and application thereof. The raw material of the combination contains ceramic nanopowder and a carbon nanotube with a volume ratio of 1:(1-4), Co with a volume of 40 to 50% the mixed volume of the ceramic nanopowder and the carbon nanotube, and a binding agent with a volume of 3 to 4 times than the mixed volume of the ceramic nanopowder and the carbon nanotube. The application of the combination comprises the following steps of: mixing the ceramic nanopowder with the carbon nanotubeand Co at the ratios, adding the binding agent at the ratio, mixing uniformly, applying on the surface of a hot forging mold to be processed to form a coating layer with a thickness of 0.2 to 0.5 mm,and scanning the coating layer with a high-energy laser beam to form the nanometer composite abrasion-resistant coating on the surface of the hot forging mold. The nanometer composite abrasion-resistant coating has the advantages of high hardness, high abrasion resistance, high abrasion reduction performance, high processing speed, high efficiency and strong adaptability, and the service life ofthe mold can be increased by above 35%.

Description

technical field [0001] The invention relates to the field of surface engineering, in particular to a nanocomposite wear-resistant coating composition for hot forging dies and its application. Background technique [0002] The main way to improve mold life is surface strengthening treatment. The surface strengthening treatment of the mold refers to the modification or coating of the working surface of the mold by mechanical, physical or chemical methods, so that the mold has higher strength, hardness and wear resistance on the basis of ensuring high strength and toughness. Obtain excellent high temperature fatigue resistance, oxidation resistance, seizure resistance, adhesion resistance, abrasion resistance, corrosion resistance and other properties. At present, the commonly used surface strengthening technology has a high treatment temperature, which leads to deformation of the mold and affects the surface quality and dimensional accuracy of the mold. Such as carburizing t...

AI Technical Summary

Problems solved by technology

However, these studies are almost all in the laboratory research stage, and have not yet been widely used in industrial applications; second, the parts with laser surface treatment are often relatively simple in shape; third, the types of substrate materials to be processed are relatively small; The processing method is relatively simple

So far, there are no reports on the direct preparation of nanocomposite wear-resistant coatings by laser at home and abroad and their application in the surface treatment of hot forging dies with relatively harsh service conditions.

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