Development of Laval Nozzle for Micro Abrasive Jet Machining [MAJM] Processes

The modern manufacturing era demanding miniaturization of devices with micro features in fields of electronics, optics, medicine, biotechnology, communications, and avionics. A large number of investigations carried out in micro abrasive jet machining on glass with conventional nozzle but very little study is carried on metals. To do machining on metal higher velocity of abrasive particle is required so attempt is made to develop Laval type of nozzle for difficult to machine materials such as stainless steel ANSI 316 plate. A nozzle is conceived to assure specific characteristics of the mixture (compressed air and abrasive particle) owing through it. During this flow, the force of abrasive particle is converted to kinetic energy, so the velocity of the mixture is increased. The flow characteristics and machining performance of Laval nozzle are examined precisely by experimentally also investigate that the Laval nozzle reduce dimensional variation of machined hole and increase concentration of flow with guiding pressure.