In the article the equipment, method and the results of researches of strength of gas-flame coatings cohesion with the base are presented. The dependence of adhesive strength on spraying modes of powder material by oxyhydrogen flame is established and described. Recommendations on choosing the gas-flame spraying modes are developed.
The article deals with the issues that allow creating conditions that exclude the formation of abrasive agglomerations in the process of applying a polymer coating in installations with a fluidized bed. The authors pay attention to the stages of agglomeration of the abrasive in the fluidized bed, as well as possible situations that arise when one particle collides with another. The problem of agglomeration development in the installation chamber is relevant, as it directly affects the quality of the coating, its uniformity. In addition, the critical size of the agglomerations will stop the coating process and lead to large material losses. The research carried out in the article on the process of obtaining a new effective abrasive material for waterjet cutting makes it possible to increase the cutting capabilities of a water jet.
The article deals with the issues of increasing the productivity of the process of applying the polymer shell to the abrasive. It is established that the performance of the abrasive encapsulation in the fluidized bed is achieved due to the selection of equipment, the type of polymer, the spray parameters and the properties of the abrasive material. The authors have developed a method for producing abrasive grain with a polymer coating using an installation that allows processing the initial particles in a fluidized bed.
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