An Analysis on Utilization of Titanium Metal Effective of Machine Parameters of Ultrasonic Machine |

ABSTRACT:

Titanium alloys are utilized especially in applicationsthat require a good combination of high strength, low mass and good corrosionresistance in aggressive environments. However, mechanical properties prejudgetitanium alloys to hard machinability. Machining of titanium alloys is usuallyaccompanied by cooling with liquids or gasses. One of the most effectivecooling approaches is cooling by liquid nitrogen. Liquid nitrogen decreasestemperature of tool, but also increases strength, hardness and brittleness ofworkpiece. One of the most suitable machining methods to machine hard andbrittle materials is ultrasonic machining. In this article, rotary ultrasonicmachining of titanium alloys under cryogenic conditions is analyzed. Advanced ceramics are likely candidates for manyindustrial applications due to their superior properties. However, their highmachining costs lead to limited applications. Rotary ultrasonic machining (RUM)is one of the cost-effective machining processes available for drilling holesin advanced ceramics. This paper reports on investigations in the last fewyears on RUM process of advanced ceramics. Emphasis is given on the effect ofRUM process parameters (such as applied static load, rotational speed, ultrasonicpower and vibration amplitude, abrasive grit size and coolant) on machinabilityparameters (such as material removal rate, tool wear and surface roughness).Results on tool wear and edge chipping are also reported. Titanium and its alloys are finding prime applications inindustries due to their unique properties. However, high cost of machining isone of the limiting factors for their widespread use. Tremendous efforts arebeing made to improve the existing machining processes and new processes arebeing developed to reduce the machining cost in order to increase the titaniummarket. However, there is no report on the systematic study of the effects ofmachining variables on output parameters in rotary ultrasonic machining oftitanium and its alloys. This paper presents as experimental study on rotaryultrasonic machining of a titanium alloy. The cutting force, material removalrate, and surface roughness when rotary ultrasonic machining of a titaniumalloy have been investigated using different machining variables.