铁基金刚石砂轮生物在线修整加工性能的试验研究  

Experimental research on the grinding performances of iron-based diamond wheel with biological in-process dressing

作　　者：林炜民 黄辉 马飞 LIN Weimin;HUANG Hui;MA Fei(Institute of Manufacturing Engineering, Huaqiao University, Xiamen 361021, Fujian, China)

机构地区：[1]华侨大学制造工程研究院,福建厦门361021

出　　处：《金刚石与磨料磨具工程》2020年第6期76-82,共7页Diamond & Abrasives Engineering

基　　金：国家自然科学基金(U1805251);厦门市重大科技项目(3502ZCQ20191007)。

摘　　要：生物在线修整(BID)是一种环境友好的金属基砂轮修整技术。以清水为对照,采用不同Fe^3+质量浓度的嗜酸氧化亚铁硫杆菌(A.f)磨削液,通过生物在线修整试验,比较及分析不同Fe^3+浓度对铁基金刚石砂轮磨削单晶碳化硅工件时的磨削力、工件表面粗糙度以及砂轮表面磨粒出露高度的影响。结果表明:与清水组相比,生物修整可明显降低磨削过程中的法向力和切向力;随着生物修整液中Fe^3+浓度的提高,磨削力呈现下降趋势,磨削力比先下降后缓慢上升至3.42。生物修整还可以有效降低加工粗糙度,修整液中Fe^3+浓度为3.0 g/L时,其表面粗糙度最低为259.67 nm。产生上述结果的主要原因是通过生物修整有效地提高了磨削砂轮中磨粒的出露高度。Biological in-process dressing(BID)is an environmentally friendly dressing technique for metal based grinding wheel.In this study,different concentration Fe^3+solution containing acidithiobacillus ferrooxidans(A.f)was used as grinding fluid,comparing with water.The effects of different Fe^3+concentrations on the grinding force,the surface roughness of the workpiece and the exposed height of the abrasive particles on the surface of the grinding wheel were compared and analyzed when the iron-based diamond wheel ground the single crystal silicon carbide with BID.The result shows that compared with the water group,BID can significantly reduce the normal force and tangential force in the grinding process.With the increase of Fe^3+concentration in the biological dressing solution,the grinding force shows a downward trend,but the grinding force ratio first decreases and then slowly increases to 3.42.Biological dressing can also effectively reduce the roughness.The lowest surface roughness is 259.67 nm when the Fe^3+concentration in the dressing solution is 3.0 g/L.The main reason for the above results is that the exposed height of the abrasive particles in the grinding wheel can be effectively increased through biological dressing.

关 键 词：生物在线修整 铁基金刚石砂轮 Fe^3+质量浓度 

分 类 号：TG58[金属学及工艺—金属切削加工及机床]