REVISION AND PRACTICE E 3 U L These are the most important words you have met in this module. VOCABULARY M O D UNIT 1 bending closed die forging cold forging core deep drawing die die casting drawing extrusion forming harden hot forging lubricant melting mould open die forging plate powder forming press punch roller rolling sand casting selective laser sintering sheet sheet shrinkage sintering spinning strand UNIT 2 abrasive arbour bearing bed bench drill blade boring carriage chip chuck cutting depth drilling grinding headstock knee lathe machine tool milling overarm radial arm drill rotation speed saddle shaving shearing spindle stand tailstock tap threading turning vise way workpiece worktable UNIT 3 abrasive slurry blanking carrier gases carving discharge machining engraving eroding finish grain grit groove jet machining masking tape plasma arc machining profiles punch press refractory material slot spark reaming vaporizing Now use some of the above words to complete the sentences below. a. The hollow form which imparts its shape to a fluid or soft substance is called .......................... . b. Inner holes or cavities are formed in casting by using .......................... . c. occurs in various types of furnaces. .......................... d. Pressure forces the molten metal into a metallic mould in .......................... . e. A .......................... is a device used for holding a machine tool component rigid. f. .........................., g. .......................... cutting depth and speed are the most important factors in milling. wheels are employed in grinding. h. Sheet metal .......................... is one of the most important metalworking processes. i. The part supporting the saddle and table and moving up and down on the column is the .......................... . j. A .......................... is a fixed style of drill, which may be mounted on a workbench. k. .......................... is a process that enlarges holes previously drilled. l. .......................... is the process of cutting screw threads in metal parts. m. .......................... are stationary power-driven machines used to shape or form solid materials, especially metals. n. .......................... is one of the basic machining processes and is performed on a machine called a lathe in which the tool is stationary and the part is rotated. o. The .......................... houses the main spindle, the speed change mechanism and the change gears. p. The .......................... is a toolholder directly mounted on the spindle axis, opposite the headstock. q. .......................... is a fabricating process in which the metal, plastic, paper or glass is passed through a pair of rollers. r. 132 .......................... is the process by which long straight metal parts can be produced.