Cast iron platform annealing process

Go stress relieving, annealing is also called low temperature annealing (or high temperature tempering), the annealing is mainly used to eliminate the streak plate casting, forging, welding parts, rolling, the residual stress of cold-drawn pieces, etc.If these stress will not be eliminated, will cause the steel after a certain period of time, or during subsequent machining deformation or crack;Full annealing and isothermal annealing: full annealing and weighing annealing crystallization, commonly referred to as "for annealing, is mainly used for the annealing of hypoeutectoid composition of carbon steel and alloy steel casting, forging and hot rolled profiles, sometimes used for welding structure.Generally used as a final heat treatment, not heavy piece or as a certain workpiece heat treatment in advance;Spheroidizing annealing: spheroidizing annealing is mainly used for the eutectoid carbon steel and alloy tool steel (such as manufacturing cutters, measuring tool, mold used steel grade).The main purpose is to reduce the hardness, improving cutting workability, and to prepare for the streak plate after quenching.