In Ultrasonic machining, the metal is removed by using abrasive slurry between the tool and work. The abrasive slurry contains fine particles of aluminium oxide or silicon carbide or boron carbide and water. The vibratory tool (made of brass or copper) striking on the flow of abrasive slurry, causes thousands of microscopic abrasive grains to remove the work material by abrasion. The ultrasonic machining is best suited for tool steels, sintered carbides, glass, plastics etc. This type of machining may be used for machining of hard and brittle materials. Ultrasonic machining cuts materials at very slow speeds and produces good surface finish.
8) The ultrasonic machining is best suited for materials that are
Answer is:
Hard and brittle
Explanation:
Related Manufacturing Technology MCQ with Answers
Answer is:
All of the above
Explanation:
Electro Discharge Machining (EDM) In electro discharge machining the metal is removed by erosion caused by rapidly recurring spark discharges between the tool (cathode) and work (anode) separated by flooded dielectric fluid through a small gap.
The dielectric is used to control the spark discharges, to help in the movement of the sparks and to act as coolant. The tool is made of cast iron, brass, copper and copper tungsten alloy. The electro discharge machining can machine hardest materials and produces high degree of surface finish.
In EDM process the work piece is connected to Anode and the electrode connected to the cathode.
