石墨烯纳米流体微量润滑磨削钨钢的加工性能评价

Evaluation of machining performance of tungsten steel using graphene nanofluid minimum quantity lubrication grinding

钨钢因其优异的性能在各种领域中得到广泛应用,但钨钢具有硬度高、难加工等特点,导致磨削时工件表面质量差。为解决这一现状,对钨钢进行了纳米流体微量润滑磨削试验,采用石墨烯纳米流体微量润滑、浇注式和干式3种不同条件对钨钢进行磨削试验,提出了一种正多边形磨削轨迹的组合试验方法,比较磨削速度、进给速度、磨削深度对磨削力、工件表面质量的影响。研究发现,在磨削参数相同的条件下,纳米流体微量润滑下的磨削力最小,浇注式次之,干式最大。在磨削速度v=15 m/s时,与干式和浇注式相比,纳米流体微量润滑条件下的法向磨削力Fn分别降低约25.13%和4.52%,切向磨削力Ft分别降低约28.97%和9.92%,石墨烯纳米流体微量润滑在改善钨钢磨削方面具有显著作用。

Tungsten steel is widely used across various fields due to its excellent properties.However,its high hardness and difficult machinability result in poor surface quality of the workpieces.To address this issue,experiments were conducted on tungsten steel using nanofluid minimum quantity lubrication grinding.Tungsten steel grinding tests were carried out under three different conditions,namely graphene nanofluid minimum quantity lubrication,flood lubrication,and dry grinding.A novel experimental approach utilizing a combination of regular polygon grinding trajectories was proposed.The effects of grinding speed,feed rate,and grinding depth on grinding force and workpiece surface quality were compared.It is found that under the same grinding parameters,the grinding force under nanofluid minimum quantity lubrication is the smallest,the pouring type is the second,and the dry type is the largest.At the grinding speed v=15 m/s,the normal grinding force Fn under the condition of nanofluid minimum quantity lubrication is reduced by about 25.13%and 4.52%,respectively,and the tangential grinding force Ft is reduced by about 28.97%and 9.92%,respectively,compared with dry and pouring.Graphene nanofluid minimum quantity lubrication has a significant effect on improving tungsten steel grinding.