Modeling and Numerical Simulation of the Grinding Temperature Field with Nanoparticle Jet of MQL

Abstract

In this research, the heat transfer model of surface grinding temperature field with nanoparticle jet flow of MQL as well as the proportionality coefficient model of energy input workpiece was established, respectively. The numerical simulation of surface grinding temperature field of three workpiece materials was conducted. The results present that, in the workpiece, the surface temperature was significantly higher than the subsurface temperature, presenting relatively large temperature gradient along the direction of workpiece thickness. The impact of the grinding depth on grinding temperature was significant. With the increase of the cut depth, peak values of the grinding temperature rocketed. Distribution rules of the temperature field of 2Cr13 in four cooling and lubrication approaches were the same. Based on the excellent heat transfer property of nanofluids, the output heat through the grinding medium acquired an increasingly high proportion, leading to the drop of the temperature in the grinding zone. For the same cooling and lubrication conditions, grinding temperature presented insignificant changes along the direction of grinding width. Yet, under different cooling conditions, the temperature variation was significant. MQL grinding conditions with additive nanoparticles demonstrated great impact on the weakening of temperature effect on the grinding zone.

Modeling and analysis of temperature distribution in the multilayer metal composite structures in grinding

“…There are many mathematical models describing the temperature distribution during grinding of metals and ceramics [31][32][33][34]. Numerical solutions for temperature distribution for hardening grinding of steel components are given in [32].…”

“…In [33], an analytical model was applied to simulate the evolution of temperature during grinding of titanium alloy. Numerical simulations of grinding temperature distribution in three different materials, namely, 45 steel, 2Cr13, and zirconia ceramics, were shown in [34]. Furthermore, effects of grinding depth, cooling, and lubrication on grinding temperature were also simulated.…”

Modeling and Simulation of the Single Grain Grinding Process of the Nano-Particle Jet Flow of Minimal Quantity Lubrication

“…However, studies show that the limited cooling effect of *Address correspondence to this author at the School of Mechanical Engineering, Qingdao Technological University, 266033 Qingdao, China; Tel: +86-532-85071757; Fax: +86-532-85071286; E-mail: sy_lichanghe@163.com the high-pressure airflow can not satisfy the need for the enhanced heat transfer in the high-pressure grinding zone. In addition, the machining quality of the work pieces and the service life of the grinding wheel are significantly lower than those with the traditional pouring grinding, indicating that the MQL technology needs further improvement [10][11][12][13].…”

Modeling and Experimental Investigation of Pressure Field in the Grinding Zone with Nanoparticle Jet of MQL

“…If solid particles are added in MQL medium, it is expected to greatly increase the coefficient of thermal conductivity of fluid medium so as to improve the convective heat transfer and offset the defects of insufficient 2 Advances in Mechanical Engineering cooling effects of MQL. In addition, nano-particles (referring to ultrafine tiny solid particles with at least one dimension in the three-dimensional space, that is, in the nanoscale range (1-100 nm)) also present tribological features such as special antifriction and high carrying capacity in aspects of lubrication and tribology [13].…”

“…Gviniashvili et al [11] measured the depth of the grinding liquid in the grinding wheel and identified the relationship between the depth and the maximum temperature of the grinding workpiece. Ebbrell et al [12], Li et al [13], and Ganesan et al [14] considered the impact of inertia force. Based on two-dimensional steady incompressible fluid Navier-Stokes equation, the fluid equation in grinding zone was deducted in planar grinding, and the dynamic pressure of the fluid was simulated and solved, which was verified in experiments.…”