Laser-absorbing nano oxide paint

Abstract

The laser-absorbing nano oxide paint consists of nano oxide powder as main material, adhesive PVA, cladding agent polyglycol, antirust sodium nitrite, emulsifier OP-10, dispersant and deionized water. The paint of the present invention has a laser absorbing rate as high as 94-95%, excellent technological properties, including no agglomeration, no deposit, easy to brush and spray, no pollution, no irritative smell, no spraying and burning after in the laser treatment, etc.

Description

Technical field: [0001] The invention relates to laser heat treatment, in particular to a laser nano-oxide absorbing coating for laser heat treatment. Background technique: [0002] Generally, metal surfaces have high reflectivity to laser light, especially for commonly used CO 2 The reflectivity of the laser is as high as 80-90%. If the surface of the metal material is not specially treated, the laser surface treatment will not be able to give full play to the characteristics of high efficiency, high benefit, and low energy consumption, and even lose the advanced nature of the technology. At present, the commonly used "blackening" paint is applied to the metal surface that needs laser treatment to increase the absorption of laser light. However, it has been determined that the "blackening" paint has no effect on CO 2 The absorption rate of laser is only about 44%, which is a serious restrictive factor to the development and industrialization of new technology of laser surf...

AI Technical Summary

Problems solved by technology

[0003] The inventor has previously developed laser heat treatment absorbing coatings with metal oxides as aggregates. 2 The absorption rate of the laser is 80% to 85%. However, due to the coarse metal oxide particles used, it is not ideal even after grinding, and the absorption rate has not reached the ideal value, and precipitation cannot be avoided, and even adhesion with the coating. ingredients agglomerated

In addition, during laser cladding, these coarser metal oxide particles may enter the cladding layer, resulting in unexpected phases, so absorbing coatings cannot be used for laser cladding

The above disadvantages limit the popularization and use of this type of absorbing coatings