井式炉渗碳淬火钢件表面炭黑问题分析

李朝青, 张伟, 李瑶

Analysis of carbon black on surface of steel workpieces carburized and quenched in pit furnace

Li Chaoqing, Zhang Wei, Li Yao

金属热处理 . 2024, (9): 265 -267 . DOI: 10.13251/j.issn.0254-6051.2024.09.044