The velocity of electrons in electron beam machining is
Which one of the following machining process has contact between tool and work?
In USM (Ultrasonic machining) some kind of abrasive slurry is used and there is hammering action between tool and workpiece.
During ultrasonic machining, the metal removal is achieved by
The process in which the material removal rate is governed by Faraday law is
The metal removal by high frequency electric current is sent by ultrasonic oscillator to ultrasonic transducer. Transducer convert electrical energy into mechanical vibration and hammering action of abrasive particles remove metal.
The machining process in Which the work piece is dissolved into an electrolyte solution is called
In Electrochemical Machining (ECM) material removal rate is governed by faraday law and according to this law Mass of metal removal α q (charge)
w ∝ It
w = ZIt
Z = Electrochemical equivalent
In electro-discharge machining (EDM) the tool material is made of
Electrolyte used for fine hole drilling by electrochemical machining is
The cutting portion of a drill is to.be welded to its shank. The processes best suited for this is
Which one of the following process conditions leads to higher MRR in ECM process?
In electrochemical machining (ECM) electrolyte (example NaCl or NaCIO is used).
In electrode discharge machining (ECM) dielectric (Kerosene) is used.
In ultrasonic machining abrasive slurry is used.
In electron beam machining (EBM) vacuum Is maintained to have proper kinetic energy of electron beam.
Which statement is true for EDM?
1. MRR increases with decreasing resistance.
2. MRR increases with decreasing capacitance.
3. MRR increases with increasing capacitance.
4. MRR increases with optimum spark gap then decreases with increasing spark gap.
Hence for higher MRR higher current and higher atomic weight is required.