The pinion gear rotates, and the rack gear moves in a straight line. Rack and pinion gears are commonly used in steering techniques in automobiles and other autos. Annealing is a heat remedy applied to soften metal, to adjust crystalline structure, to relieve internal stress, and to modify for cold-working and chopping efficiency. There are several kinds of annealing in accordance with the application, corresponding to Full Annealing, Softening, Stress Relieving, Straightening Annealing and Intermediate Annealing. Heat therapy is a process that controls the heating and cooling of a material, performed to obtain required structural properties of metallic supplies. Heating …