Verification of the Non-Axisymmetric Deformation Mechanism of Bearing Rings after Quenched in a Multi-Field Coupled Simulation

Abstract

In this paper, the elliptical deformation mechanism of the bearing ring after quenching has been studied by using the theory of “metal-thermal-mechanical” and the multi-field coupling simulation method. It has been mainly considered that it occurred as an experimental phenomenon in the past that, when the bearing ring had been oil quenched, a vapor film had usually formed on its surface, and the breakage and boiling of the vapor film had been observed to be uneven in a circumferential direction. For this reason, based on the phase transition kinetics, several types of heat transfer boundary conditions on the outer surface of bearing rings during oil quenching have been assumed, and the multi-field coupled simulation of the quenching process of bearing rings has been carried out in this paper. According to the simulation results, it could be concluded that when two different heat transfer boundary conditions have been set on the outer surface of the bearing outer ring in the form of orthogonal symmetry, the quenched bearing outer ring would produce elliptical deformation. The above simulation results have been basically verified by comparing the experimental results.

Analysis of the Distortion of the Bearing Rings after Quenching

“…There is a certain time difference for the peak temperature of the maximum heat transfer coefficient. For different forms of heat transfer, a numerical simulation work program has been developed [3,9,10].…”

“…ξ I are the density of I constituent, latent heat produced by I constituent, and the volume fraction of the I constituent. The sum of the volume fractions of the I constituent (pearlite and bainite phases, martensite, and retained austenite) is 1 [8,10].…”

“…Consider the convective heat transfer boundary between the part and the quenching process. The boundary conditions are listed as follows [8,10].…”

“…In order to predict the diffusion, heat transfer, phase change behavior, and inelastic stress/strain behavior during carburizing quenching by numerical simulation, Inoue and Ju proposed the metallo-thermo-mechanics theory and a numerical simulation method based on multi-field coupling [9][10][11][12][13][14][15]. The theory and the numerical simulation method provide the basis for the prediction of quench distortion.…”

Study on the mechanism of carbide precipitation by surface quenching treatment on GCr15 bearing rings based on the phase-field method

“…According to experience, the heat transfer law of the ring has been set, and the adopted values are shown in Figure 3. The heat transfer coefficient curve could accurately reflect the temperature cooling in oil quenching, compared with the oil cooling curve (Liu et al, 2022) Table 1 shows the chemical composition of GCr15 used in the analysis.…”