Non-contact On-line Inspection Method for Surface Defects of Cross-rolling  Piercing Plugs for Seamless Steel Tubes
YU Hao, HUANG Huagui, ZHENG Jiali, ZHAO Tielin, ZHOU Xinliang
China Mechanical Engineering . 2022, (14): 1717 -1724 .  DOI: 10.3969/j.issn.1004-132X.2022.14.010

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