Processing of teeth of saw blades of cotton processing machines with a stream of compressed air with abrasive particles

Abstract

In the article, it is presented materials on abrasive blasting of teeth of saw blades of cotton processing machines with particles of black silicon carbide. The micro-profile of the surface, characterized by the height and pitch of irregularities, after microcutting with abrasive particles is able to intensify the process of fiber separation by activating the tank surfaces of the teeth. This machining process is also accompanied by deformation hardening of the surface layer of the teeth, leading to an increase in the wear resistance and durability of the saws.

Simulation of a single interaction of an abrasive particle with the surface of a part during blasting

“…Abrasive blasting is characterized by simultaneous and multiple impacts of abrasive grains having different angles of attack within the flow falling on the metal surface in the form of a so-called solid particle jet. The essence and thermodynamics of contact interaction during the impact of deforming and cutting particles on the treated surface depend on many factors: the physical and mechanical properties of the contacted materials, the size and speed of impact of solid particles, the pressure of the working medium (air, liquid), processing time, angle of attack, density flow [5][6][7]. Due to the complexity and polydeformation nature of dynamic contact during processing with free abrasive particles, schematization is necessary for this interaction of solids in order to build a mathematical model of the abrasive blasting process.…”

Interactive methods for increasing wear resistance of cutting tool blades

“…A method is proposed that provides increased wear resistance of cutting tools that are made of relatively high-speed steel of medium heat resistance. The advantages of this method are demonstrated during horizontal milling of a strong, hard-to-machine 34KhN1MA chromium alloy [3,4].…”