What is the roll quenched, Quenched and tempered to play what role?
Conditioning is the roller blank after rough machining, in the heat treatment furnace according to certain heat treatment heating, heat preservation after quenching and tempering process in general. Effect of tempering can play the following aspects:
(1) the roll core and roll neck to achieve good mechanical performance, adapt to the rolling conditions demand.After quenching and tempering of the roll material, the yield ratio increased, can effectively improve the fatigue life of roller.
(2) to meet the requirements of the roll neck technology design. Roll bearing block has a certain hardness, thetempering can achieve, need further heat treatment on special request.
(3) for the organization and preparation for the final heat roll processing. High temperature tempering hardenedlater, the carbide precipitation, the carbide in the surface hardening and the final heat treatment, more easily dissolved.
(4) can improve the microstructure, especially the distribution of carbide.
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