The theoretical determination of the temperature in the contact area in the rolling ball and ultrasonic hardening of titanium alloys OT-4, VT6 and VT9. It is shown that as a result of deformation, and the work of the friction forces is formed of heat. At the same time the total temperature field is influenced by the geometric parameters of the items to be treated, during previous processing, the total thermal power sources and the nature of the heat exchange with the environment. A generalized solution of the maximum contact temperature at the ball rolling and ultrasonic hardening by moving sources.

Keywords: ultrasound, hardening, roll forming a ball , the contact area, a titanium alloy .

The effect of ultrasound on the process of cutting fine-grained gears from hard materials - zubodolblenie and tooth regrinding. It is shown that with the introduction into the treatment zone ultrasound is a significant reduction of the cutting force component pz shrinkage chip and the height of asperities. Wear of cutting teeth superimposed ultrasonic vibrations becomes more stable, increased efficiency gear cutting tools.

Keywords: zubodolblenie, gear, ultrasound, cutting force, the stress-strain state, microgeometry, wear resistance