The research of the agglomeration process during the formation of an abrasive-polymer compound for waterjet cutting in a fluidized bed installation

Abstract

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.

Analysis and optimization of mass percentage of zycoprint polymer and abrasives in achieving stability of suspension mixture in abrasive water jet machining

“…The polymers are long-chained molecules that impart a viscoelastic fluid behaviour to the suspension mixture. There are various polymer additives during the Suspension-type AWJ machining of several materials, including SUPER-WATER/polyacrylamide (PAM) [15][16][17], Xanthan [16,18], polyox [19], carboxy methyl cellulose (CMC/ cellulose gum) [16,17] and others. Recently, Wang et al [20] studied the rheological properties of the suspension mixture with PAM and CMC used in suspension-type AWJs.…”

Sequential Smoothing Treatment of Glass Workpieces Cut by Abrasive Water Jet

“…This phenomenon is closely related to the Venturi effect, and it was described by Hashish [ 19 ]. As an abrasive, natural abrasives, such as garnet [ 20 ] (almandine is the most popular form of garnet used in AWJ technology), Al 2 O 3 [ 21 ], SiC [ 22 ] or olivine, are commonly used in the abrasive water jet forming process. The final formation of the jet takes place in a focusing tube, after which the jet is directed at the workpiece.…”

Analysis of the Properties of the Fluidized Bed during the Formation of the Abrasive-Polymer Compound for Waterjet Cutting

“…The size of the abrasive particles ranges from 100 to 350 µm. Garnet abrasive is the most wellproven for waterjet cutting, as it has a sufficient hardness of about 7.5-8 units on the Mohs scale and rounded edges, which ensures moderate wear of the focusing tube of the nozzle [3].…”