New method for strengthening surfaces of heat treated steel parts

15th International Scientific and Engineering Conference Hermetic Sealing, Vibration Reliability and Ecological Safety of Pump and Compressor Machinery HERVICON+PUMPS-2017

机械制造;生态环境科学

Tarelnyk, V.^1 ; Martsynkovskyy, V.^1 ; Gaponova, O.^2 ; Konoplianchenko, Ie^1 ; Belous, A.^1 ; Gerasimenko, V.^1 ; Zakharov, M.^3

Sumy National Agrarian University, 160 G. Kondrateva Str., Sumy

40021, Ukraine^1

Sumy State University, Sumy, 2 Rymskogo-Korsakova st., Sumy

40007, Ukraine^2

Regional Institute of Postgraduate Education, 5 Rymskogo-Korsakova st., Sumy

40007, Ukraine^3

关键词: Alloying process;    Carburizing process;    Discharge energy;    Nitriding process;    Steel parts;    Surface layers;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/233/1/012048/pdf
DOI  :  10.1088/1757-899X/233/1/012048

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

There is described a method for strengthening surfaces of heat-treated steel parts, which includes technological procedures of carburizing by electroerosive alloying process (CEEA) and also nitriding processes. The nitriding process is simultaneously carried out with the CEEA operation for a period of time sufficient to saturate the surface layer of a part with nitrogen to the depth of a heat-affected zone. Thus, the process of so-cold nitro-carburizing process performed by the EEL method (NCEEA) takes place. To reduce a surface roughness, the NCEEA process is carried out in at least two stages, with a decreasing a discharge energy value at each subsequent stage.