Effect of preheating on fatigue resistance of gears in spin induction coil hardening process

International Conference on Advances in Materials and Manufacturing Applications 2017

Kumar, Pawan^1,2 ; Aggarwal, M.L.^1

Mechanical Engineering Department, YMCA University of Science and Technology, Faridabad, Haryana

121006, India^1

Mechanical Engineering Department, Amity University Haryana, Manesar, Gurugram

122413, India^2

关键词: Austenitizing temperature;    Compressive residual stress;    Design parameters;    Gear geometry;    Hardening process;    Hardening treatment;    Induction coils;    Single-frequency mode;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/310/1/012142/pdf
DOI  :  10.1088/1757-899X/310/1/012142

来源: IOP

【 摘 要 】

Spin hardening inductors are typically used for fine-sized teeth gear geometry. With the proper selection of several design parameters, only the gear teeth can be case surface hardened without affecting the other surface of gear. Preheating may be done to reach an adapted high austenitizing temperature in the root circle to avoid overheating of the tooth tip during final heating. The effect of preheating of gear on control of compressive residual stresses and case hardening has been experimentally discussed in this paper. Present work is about analysing single frequency mode, preheat hardening treatment and compressive residual stresses field for hardening process of spur gear using spin hardening inductors.