There are many ways to generate heat. In the past, we used more combustion methods, but now the electric heating method comes out. The latter will be more environmentally friendly. Can be used for arc spraying and plasma spraying, the former including flame spraying, explosive spraying and high-velocity flame spraying. Before arc spraying, the equipment needs to deal with sandblasting to achieve a certain bonding strength and prevent the sprayed layer from falling off. The shot blasting treatment may not achieve the expected effect of special workpieces.
The influencing factor of the spraying process is temperature. Strictly speaking, the temperature at which the droplet impacts the substrate surface and the speed at which the droplet impacts the substrate surface. When the material is sprayed by arc spray equipment, the flight time to the substrate surface is only a few thousandths of a second or less. In a relatively short period of time, it is heated, melted or semi-melted to form a relatively dispersed droplet. As it dashes toward surface, it is struck into a flat, folded nub that repeatedly generates and covers. The coating of Luo Die is a spray coating. The higher the heat source temperature, the higher the impact velocity and the denser the coating.
When asking an engineering question, the first thing to do is to define the sprayed part of the construction part. The general production is the working surface, and the coating function is the main basis for determining the process material, and at the same time, it is necessary to consider whether it is economically acceptable. In addition, the variety of coatings generally comes from the choice of materials. While the variability in process parameters and spray method is the same material, different process parameters also produce different coatings. Combinations of these variables result in a menu coating series, and when you want a feature coating, you just need to select it.
Note: this article is reprinted from the network platform, if there is infringement, please contact the website staff to delete.
