Research of the Dependence of Microhardness on Cutting Modes during Waterjet Treatment of Hardox-500 Chrome-Nickel Steel

Abstract

In the article, it is intended to investigate the change of the surface microhardness in the cutting of machine parts made of HARDOX-500 steel material with hydroabrasive depending on the cutting mode elements, i.e., the change of the speed of the longitudinal movement in cutting by taking the water jet and the abrasive to the contact zone at a pressure of 3500 bar. The article also studied the microhardness of the surface of the part cut with hydroabrasive and the microhardness of the surface after polishing the material of the part with the K60 grit polishing wheel, as well as the microhardness of the surface of the part cut with hydroabrasive and the surface of the part after polishing with the K120 abrasive wheel. Measurements were measured using a HECKERT device at six points on the surface of the pastry. The measuring device is equipped with an appropriate computer program, and the measurement operation is automatically calculated using this software, based on the establishment of appropriate tables and graphs.