Research on Real Surface Stability of Cone Bit Sliding Bearing Under Repeated Contact ConditionWanzhong Li, Chong Deng, Yingqiang Xu, Jian Sun, Yazhou Feng and Duanyin ZhuE3S Web Conf., 299 (2021) 01006DOI: https://doi.org/10.1051/e3sconf/202129901006