Temperature and Stress Analyses during Induction Hardening Process

Coupled Analysis of Induction Hardening Considering Induction Heating, Thermal Elasto-viscoplastic Damage, and Phase Transformation

“…The temperature dependence of the material parameters used in the thermal elasto-viscoplastic damage analysis is given in Table 2 Lee, 2000, 2002). Miyachika et al, 1998) to illustrate the validity of the present computational procedure. Figure 6 shows the time-histories of the axial stress, from which it is seen that the large compressive stress takes place near the bar surface during the induction heating process and turns into the tensile stress during the cooling process, resulting in the large residual stress at the finishing of the hardening process, which is tensile as the volume expansion due to the phase transformation is neglected in the present calculation.…”

“…The commercial code SYSWELD and the studies by several researchers (Miyachika et al, 1998;Fuhrmann et al, 1999;Ju, 2000;Yuan et al, 2003;Pascal et al, 2004) have dealt with the analysis method considering the induction heating, the thermal stresses, and the phase transformation. Miyachika et al (1998) calculated the temperature and stresses during the induction hardening process of shafts. The validity of the calculation method was confirmed by comparing the calculated temperature with the measurement.…”

Simulation of Induction Hardening Process of Sintered Metal Shafts

“…Therefore, it is necessary that the effects of the hardening condition on the residual stress and the hardened layer are determined. Authors have theoretically studied residual stresses and hardened layers of wrought steel (S35C) shafts with uniform section due to the single frequency induction hardening and shouldered shafts due to the dual frequency induction hardening [2][3][4][5]. In the present paper, the simulation of induction hardening process of sintered metal shafts was investigated.…”

Effects of Heating Time, Electric Power and Frequency on Bending Fatigue Strength of Induction Hardened Gears

“…However, the heating condition of induction hardening for the gear is determined by the try and error method and the field experience. Authors have theoretically studied residual stresses and hardened layers of shafts with uniform section due to the single frequency induction hardening and shouldered shafts due to the dual frequency induction hardening [2][3][4][5]. In the previous paper, computer simulation program for predicting the residual stress and hardened layer due to the induction hardening of S35C three-dimensional machine elements had been developed by the authors, and the validity of this simulator was confirmed.…”

“…The residual stresses and hardened layers due to single and dual frequency induction hardening of gears were investigated [6]. Effects of heating conditions on residual stresses, hardened layers and bending fatigue strength of induction hardened S35C steel gears were determined [7].…”