Kts 570 precio6/19/2023 This is because a bainitic structure in general has better mechanical properties, e.g., higher toughness, higher crack propagation resistance, etc. Furthermore, the cooling strategies have to be optimized to minimize the dwell time in the salt bath.Īs an illustration, it is showed a method of complete bainite hardening of steel for use in bearings and other load carrying components, wherein bainite transformation is performed at a temperature just above the martensite formation temperature, transforming 25%-99% of the austenite into bainite at said temperature, and then increasing the temperature to speed up the transformation of the remaining austenite into bainite.īainite hardening is sometimes preferred in steels instead of martensite hardening. However, it is necessary to carefully select the material grade according with the wall thickness or weight of the parts and the desired yield strength. Bainite hardening allows higher yield strength with same hardness as tempered steel, higher tensile stresses and leads to desirable compressive stresses at the surface. Besides the applications in the bearing industry, where salt bath quenching is state of the art, more and more applications can be found, where bainite hardening generates advantages in comparison with martensitic hardening and tempering. In the last years an increased interest in bainite hardening processes for different applications can be found.
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