Surface technology adding compressive residual stress by magnetic field-assisted machining using electrolyzed reducing water

• Published in: Journal of the Japan Society for Abrasive Technology Vol. 64; no. 6; pp. 326 - 332
• Main Authors: KAWAKUBO, Hideki, SATO, Unkai, MURATA, Shuichi
• Format: Journal Article
• Language: Japanese
• Published: Tokyo The Japan Society for Abrasive Technology 01.06.2020; Japan Science and Technology Agency
• Subjects: Compressive properties; Compressive strength; Corrosion fatigue; Crack propagation; electrolyzed reducing water; Fatigue cracking; Fatigue strength; Fracture mechanics; Machining; magnetic field-assisted machining; Magnetic fields; Magnetic poles; Metalworking fluids; Post-production processing; Residual stress; Stress corrosion cracking; surface processing; Surface treatment
• ISSN: 0914-2703; 1880-7534
• DOI: 10.11420/jsat.64.326

The magnetic field-assisted machining process is expected to be a useful post-processing technique. For surface treatment, residual stress is known to exert an influence on fatigue strength and stress corrosion cracking, and techniques to increase compressive residual stress on the processing surface and pipe inner face are required. Here, the magnetic field-assisted machining process using electrolyzed reducing water was shown to increase compressive residual stress compared to the use of the traditional approach using metalworking fluid. This study was performed to examine the basic working characteristics of the new technique that increases compressive residual stress using the magnetic field-assisted machining process with electrolyzed reducing water. Furthermore, we developed a magnetic pole incline processing method to increase compressive residual stress values and applied this method to internal processing. The results demonstrated the usability of this processing method.