VERY IMPORTANT! FYI to write your Certificate Examinations' Questions and Answers
Question Book of Training Manual for Industrial Mechanics --Millwright-- Key Words:( have to recite and understand them) \ -- Hardening. any process of the increasing hardness of a metal by suitable treatment usually involves heating and cooling. -- Tempering: a process of re-heating hardened or normalized steel to a temperature below the transformation temperature range, followed by any desired rate of cooling. P.S.727 C to 1341F is temper Carbon Steel, heat below the critical range, and quench., depending on the carbon content. -- Annealing. is a process involving heating and cooling, applied usually to induce softening. --Non Destructive Test for cracks and flaws in steel, without changing its physical shape= (1) Magnetic particle inspection for some material that has Magnetic force etc.; (2) Dye penetrant inspection. --If conveyor belts slip in wet conditions, apply Pulverized Lime --Stress: Pounds/per square inch (imperial system) -- Tensile Stress is shortened