This paper presents the results of research on influence plasma nitriding technology parameters working surface deformation hypoid gears. Blue light with non-contact measuring devices is used to determine gears after nitriding. The study has determined a regression equation showing gear. minimum optimization value at planning area 0.0071746 permeation temperature TL=4.89oC, time h=510h, and gas...

The article is devoted to the analysis of wear resistance diffusion coatings, which were applied by ionic nitriding on steel 40ХН2МА. There a comparison technological efficiency results. parameters modes used in process application are presented, with list equipment and stages. authors conduct comparative chemical composition, microstructure, metallographic tribological studies. They study kine...

Plasma nitriding is a plasma-activated thermochemical method widely used to increase the fatigue strength, hardness and wear resistance of low-alloy steels. In this work, new structure consisting hollow cathode metal plate can produce discharge heat workpiece by radiation. This principle perform source plasma (HCSPN). Herein, 42CrMo steels were treated conventional (CPN) HCSPN treatments. The n...

Decarburization is generally avoided as it reckoned to be a process detrimental material surface properties. Based on the idea of duplex engineering, i.e., nitriding case-hardened or through-hardened bearing steels for enhanced performance, this work deliberately applied decarburization prior plasma cancel softening effect decarburizing with and at same time significantly promote kinetics. To m...

In this study, the fracture behavior of AISI 4140 low-alloy steel nitrided with respect to applied current density was investigated. A series rotary bending fatigue tests were performed various loads (350, 400, 450, and 500 N) at a constant rotational speed 2000 rpm. The results show that increase in strength (up 35%) strongly depends on compound layer formed during nitriding process. addition,...