Transactions of Nanjing University of Aeronautics & Astronautics
Investigation on the Grindability of CSS42L Stainless Steel
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Abstract:
Plunge grinding experiments were carried out on CSS42L stainless steel with the white fused alumina wheel. The grinding forces were measured with variations in accumulated material removal volume. Then the morphological features of worn grinding wheel were analyzed by optical microscopy and the grinding temperatures were measured with a thermocouple. For comparison, C45 steel was ground under the same conditions. The results indicated that the grinding forces of CSS42L were at least twice that of C45 steel. When the accumulated removal volume overcame 375 mm3, strong adhesion was found between the abrasives and workpiece CSS42L. Nevertheless, adhesion was hardly found after 800 mm3 workpiece C45 steel was removed. In order to enhance the machining property of CSS42L, a brazed CBN wheel was incorporated into the grinding of CSS42L, and the grinding forces and temperatures were found significantly decreased, whose maximum decreasing amplitude was about 70% and 80%, respectively.
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