UNIT 1:
Introduction, Principles of metal cutting
Classification of Metal cutting/machining processes
Orthogonal and oblique cutting
Effect of tool geometry and other cutting parameters
Mechanisms of formation of chips, types of chips formed, Chip Breakers, concept of specific cutting pressure
The forces acting on the cutting tool and their measurement
Merchant’s circle diagram
Force dynamometer, Force and velocity relationship, Tool wear
Factors causing wear, tool life, Variables affecting tool life, economical cutting speed, machinability of metals
UNIT 2:
Sources of heat generation in machining and its effects
Temperature Measurement techniques in machining
Types of cutting fluids, Functions of cutting fluids
Characteristics of cutting fluids
Application of cutting fluids
Economics of Metal Cutting Operations.
Different types of Threads manufacturing methods and tools involved
Different gear forming and generating methods with their special features
Gears finishing processes
UNIT 3:
Operating principle, basic equipment, merits and applications of : Fusion welding processes
Gas welding – Types – Flame characteristics; Manual metal arc welding
Gas Tungsten arc welding – Gas metal arc welding
Submerged arc welding – Electro slag welding
Operating principle and applications of: Resistance welding – Plasma arc welding
Thermit welding – Electron beam welding
Friction welding and Friction Stir Welding
Weld defects: types, causes and cure.
