结合国内外对植物油作为微量润滑基础油的研究现状，用液态石蜡作为对比，实验探究了棕榈油作为基础油的润滑性能，实验中添加的纳米粒子是粒径为50nm的MoS2。实验中以高温镍基合金作为工件在精密平面数控磨床上进行平面磨削，四种磨削工况：干式磨削、浇注式润滑、微量润滑、纳米粒子射流微量润滑。采用三向测力仪测量磨削力用于计算比磨削能和摩擦系数，用粗糙度测量仪测量工件表面的粗糙度值。实验结果表明添加MoS2纳米粒子的棕榈油基纳米流体在纳米粒子射流微量润滑的条件下取得了最好的润滑性能，这是由于棕榈油中高的饱和脂肪酸含量和羧基高的成膜性能。%In consideration of the combined present research situation of vegetable oil as minimum quantity lubrication ( MQL) base oil domestically and abroad, the lubricating property of palm oil as base oil in com-parison with liquid paraffin was explored. In the experiment, a numerical control precision surface grinder was used for plain grinding on a nickel base alloy workpiece. The effect of adding MoS2 nanoparticle with a particle size of 50 nm was studied. Four types of grinding working conditions were applied: dry grinding, flood lubrication, MQL, and nanoparticle jet MQL. Grinding force, particle size, viscosity of nanofluids, and workpiece surface roughness were measured. The experimental results indicate that palm oil-based nanofluids added with MoS2 nanoparticles produce the best lubricating property in the nanoparticle jet MQL condition because of the high saturated fatty acid and high film-forming property of carboxyl groups in palm oil.
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