News
May 11,2024
What is the organizational stress of crane wheel forgings?
If there is phase change in the cooling process of crane wheel forgings, it will produce tissue stress. As with heating, the tissue stress is also caused by the change of the specific volume of the tissue before and after the phase change, and the outer layer and the heart phase change are different.
If there is phase change in the cooling process of crane wheel forgings, it will produce tissue stress. As with heating, the tissue stress is also caused by the change of the specific volume of the tissue before and after the phase change, and the outer layer and the heart phase change are different.
Take the crane wheelForgingsAs an example of a martensitic transformation occurring during cooling, the outer layer is preceded by a martensitic transformation as the temperature of the forging decreases. The specific volume of martensite is greater than the specific volume of austenite, the outer layer expands, while the heart has not yet changed, which has a pulling effect on the expansion of the outer layer, so the tissue stress is: the outer layer is compressive stress, the heart is tensile stress. But at this time, the temperature of the heart is relatively high, and it is still in the austenitic state with good plasticity. Through local plastic deformation, the tissue stress can be relaxed.
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May 11,2024
What is the organizational stress of crane wheel forgings?
If there is phase change in the cooling process of crane wheel forgings, it will produce tissue stress. As with heating, the tissue stress is also caused by the change of the specific volume of the tissue before and after the phase change, and the outer layer and the heart phase change are different.
