Experimental investigation on grinding surface condition of 9Mn2V under different tempering processes
by Dapeng Dong; Guoqiang Guo; Qinglong An; Ming Chen
International Journal of Abrasive Technology (IJAT), Vol. 5, No. 4, 2012

Abstract: This paper investigated the surface condition of 9Mn2V in conventional surface grinding using SG (seeded gel) abrasive (3SG46JV) under different tempering processes, which included metallographic structure, micro-hardness, specific grinding energy, surface roughness, surface morphology, surface residual stress and grinding cracks. The experimental results indicated that with the completion of tempering, quenched martensite has transformed into tempered martensite, the micro-hardness of 9Mn2V decreased and the specific grinding energy increased. The ground surface quality improved evidently with the increase of tempering times. Meanwhile, the ground surface was in a state of high tensile residual stress after quenching. After the second time of tempering, the residual stress has significantly reduced. Otherwise, the grinding cracks could be avoided after 9Mn2V was tempered.

Online publication date: Wed, 30-Jul-2014

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