钎焊金刚石砂轮磨削AA4032铝合金试验

通过磨削试验,研究钎焊金刚石砂轮磨削4032铝合金(AA4032)在不同磨削参数时的磨削特性.结果表明:磨削力和磨削表面粗糙度都随着磨削深度和工件进给速度的增加而增大,随着砂轮线速度的增加而减小;法向磨削力与切向磨削力有良好的线性关系,其力比为2.6;AA4032主要以塑性方式去除,其被加工表面由光滑区、划痕、磨屑粘附、白色析出颗粒及孔组成,表面质量随磨削速度增大而明显提高;磨削比能随单颗磨粒切削厚度(h_c,max)增大而减小,在相同h_c,max下,高速磨削有利于降低磨削能耗.

Experimental Study on Grinding 4032 Aluminum Alloy With Brazed Diamond Wheel

An investigation was carried out to assess the characteristics of grinding 4032 aluminum alloy(AA4032)with a brazed diamond wheel under different grinding parameters. The results indicate that the grinding forces and ground surface roughness increase with the increase of depth of cut and feed rate, and decrease with the increase of grinding speed. The normal grinding force has a good linear proportion to the tangential grinding force, and their ratio is about 2.6. During grinding, the AA4032 is mainly removed in ductile mode. The ground surface has such characteristics as smooth area, scratches, smeared material, white precipitated particles and holes. The ground surface quality is promoted significantly with the increase of the grinding speed. The specific grinding energy decreases with the increase of the cutting thickness of single grinding grain(h_c,max). With an identical value of h_c,max, high speed grinding is beneficial to reduce the grinding energy consumption.