A kind of alloying paint, preparation method and mold electron beam alloying method

Abstract

The invention discloses an alloying coating, a preparation method of the alloying coating and a mould electron beam alloying method. The alloying coating comprises the following raw materials, by mass, 20-30 parts of SiO2, 20-25 parts of SiC, 20-25 parts of Nb, 20-25 parts of W, 20-25 parts of Hf, 20-25 parts of Al, 20-25 parts of Si, 20-25 parts of Be, 15-25 parts of bentonite, 6-10 parts of lac and 300-400 parts of absolute ethyl alcohol. The defects like air holes, inclusion and flaws can be overcome effectively. The preparation method of the alloying coating comprises the following step: SiO2, SiC, Nb, W, Hf, Al, Si, Be and bentonite are broken into particles with the particle sizes being less than 3 micrometers, then the particles are mixed uniformly and alloy powder is obtained, lac is dissolved into a part of absolute ethyl alcohol and a lac alcohol solution is obtained, finally the alloy powder, the lac alcohol solution and the other part of absolute ethyl alcohol are mixed uniformly by a mixer. The mould electron beam alloying method is characterized in that a mould is placed in an electron beam alloying coating for a certain time, and then in a shielding gas atmosphere, electron beam bombardment treatment is carried out on the surface of the mould by using impulse electron beam equipment.

Description

technical field [0001] The invention belongs to the technical field of material surface treatment and strengthening, and in particular relates to an alloying paint, a preparation method and a mold electron beam alloying method. Background technique [0002] Hot work molds are subjected to variable stress and impact at high temperatures, and the molding temperature of the workpiece is often above 1000°C. It also has to withstand high temperature oxidation, burning, and thermal shock caused by thermal changes under strong water cooling conditions. When in service, it needs to bear the loads of high stress, thermal shock, thermal wear and corrosion, so the life of the mold is very low. In order to improve the life, the main method currently used is surface strengthening. Conventional methods include quenching, carburizing, nitriding, etc., but the effects of these methods are very limited, because the hot work mold works in a high temperature environment, and the traditional q...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the above-mentioned deficiencies in the prior art, the present invention provides an alloyed coating to solve the technical problems of defects such as pores, inclusions, and cracks in the existing alloy components, and correspondingly provides its preparation method. Electron beam alloying of molds with alloy coatings to solve the problem of short service life of hot-working molds with surface treatment in the prior art