Manufacturing Technology 2022, 22(6):747-753 | DOI: 10.21062/mft.2022.087

Evaluation of the Strengthening Effect of Different Surface Treatment Techniques in Steel Crankshaft Manufacturing Industry

Songsong Sun ORCID..., Xiaolin Gong ORCID...
College of Automobile and Traffic Engineering, Nanjing Forestry University, Nanjing, 210037, China

At present, electromagnetic induction quenching and nitriding are two commonly used surface strengthening approaches applied in improving the strength of the steel parts. In this paper, a comparative study was proposed to research the strengthening effect of these two technologies in improving the fatigue strength of steel crankshaft. First a modified statistical analysis approach of the fatigue limit load was proposed to obtain the distribution of the fatigue limit load. Then two types of steel crankshafts were selected to be the object of research and treated by these two techniques. Finally the standard T and F hypothesis testing methods were conducted in evaluation the strengthening effect. The results showed that compared with the nitriding approach, the electromagnetic induction approach can improve the fatigue strength of the steel crankshaft more obviously, thus is more suitable for engineering applications.

Keywords: Crankshaft, Nitriding, Electromagnetic induction, Bending fatigue

Received: September 7, 2022; Revised: December 23, 2022; Accepted: December 23, 2022; Prepublished online: December 23, 2022; Published: January 6, 2023  Show citation

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Sun S, Gong X. Evaluation of the Strengthening Effect of Different Surface Treatment Techniques in Steel Crankshaft Manufacturing Industry. Manufacturing Technology. 2022;22(6):747-753. doi: 10.21062/mft.2022.087.
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