A kind of alloy coating, preparation method and mold surface treatment method

Abstract

The invention discloses an alloyed coating, a preparation method and a mold surface treatment method. The alloyed coating includes the following raw materials in parts by mass: 20-30 parts of SiO2, 20-25 parts of WC, 20-25 parts of Nb, 20-25 parts of Mo, 20-25 parts of Hf, 20-25 parts of Al, 20-20 parts of Si~20 ‑25 parts, Be 20~25 parts, bentonite 15~25 parts, shellac 6~10 parts, absolute ethanol 300~400 parts. It can effectively avoid defects such as pores, inclusions, and cracks. Its preparation method is to crush SiO2, WC, Nb, Mo, Hf, Al, Si, Be and bentonite respectively to a particle size of less than 3 microns, then mix uniformly to obtain alloy powder, and dissolve shellac with a part of absolute ethanol to form shellac Ethanol solution, finally the ethanol solution of alloy powder, shellac and another part of absolute ethanol can be stirred evenly with a mixer. The mold surface treatment method is to place the mold in the above-mentioned laser alloy coating for a certain period of time, then take out the mold, and use a laser for melting treatment in an argon flow to complete the laser alloying of the mold surface.

Description

technical field [0001] The invention belongs to the technical field of material surface treatment and strengthening, and in particular relates to an alloyed coating, a preparation method and a mold surface treatment 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 quenc...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the above-mentioned deficiencies existing 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 provides corresponding preparation methods thereof, and at the same time provides The coating is carried out mold surface treatment method, in order to solve the problem of short service life of the hot work mold that carries out surface treatment in the prior art