Ultrasonic oscillation superposition during welding

There are shown the investigation results on the impact of ultrasonic oscillation transfer to a structure element upon seam geometry during semi-automatic welding in protective gas environment. The effects arising in melt during ultrasound superposition, their impact upon the formation of molten pool, geometrical parameters and structure of seam cross-section are considered.

Hole accuracy increase at hole reaming in hard-to-machine parts

The investigation results of the tool geometry impact upon accuracy of holes worked in hard-to-machine parts at the ultrasonic oscillation introduction in a cutting area are shown. The processes of hole reaming in parts made of stainless steel and titanium alloys at ultrasonic oscillation application upon a tool are considered. Tool basic parameters defining the accuracy of holes obtained are defined. The regularities of the impact of face and back angles of reamer cutting ends, an angle of an intake cone and a tool spiral direction upon a hole smash are revealed.