SECTION 3

REPORT

3.1 CLASSIFICATION AND DESCRIPTION OF THE MANUFACTURING TECHNIQUES IN FNSS

Following techniques of manufacturing are being used in FNSS; * Chip Removal * Joining * Metal Forming * Testing * Chemical Operations

3.1.1 CHIP REMOVAL PROCESSES
Metal cutting, commonly called machininh, is the removal of unwanted portions from a block,plate of material in the from o chips so as to obtain a finished product of desired dimensions, finish.Most of the manufactured products require machining at some stage of their production, ranging from rough work to high precision work.Hence metal cutting is the most important of the basic manufacturing processes.
In all metal cutting operations an edged tool driven in to the material to remove chips from the main body and reach the desired geometry.Other actions that occurs are related to that action.
In cutting operations, there are three cutting conditions; namely speed, feed and depth of cut.Speed is the primary cutting motion, which relates the velocity of the tool relative to work.Feed is the amaount of material removed per revolution.The depth of cut is the depth of cutting edge engaged in the workpiece.
The properties of the workpiece are important in chip formation.High strength materials require larger forces than do materials of lower strength, causing greater tool and work deflection, increased friction and heat generation and operating temperatures,and requiring greater work input.The structure and composition also affect metal cutting.Hard or abrasive constituents, such as carbides in steel, accelerate tool wear.In FNSS mainly Aliminium cutting is done such problems are seen rarely.
Work material ductility is an important factor.Highly ductile materials not only permit extensive plastic deformation of the chip during cutting, which increases work, heat generation, and