过热度对轴承钢凝固组织整体形貌特征及渗透率的影响

曹江海, 侯自兵, 郭中傲, 郭东伟, 唐萍

Effect of Superheat on Integral Morphology Characteristics of Solidification Structure and Permeability in Bearing Steel Billet

CAO Jianghai, HOU Zibing, GUO Zhongao, GUO Dongwei, TANG Ping

图4 数盒子法计算凝固组织分形维数的步骤(以过热度20℃的1#试样为例) (a) the original macrostructure (b) box grid overlaid on the macrostructure (c) relation between lnN(r) and lnr for fractal dimension (r—mesh size, N(r)—the number of meshes, R2—fitting coefficient)

Fig.4 Calculation process of fractal dimension in sample 1# under 20oC superheat