Surface Characteristics of Low Plasticity Burnishing for Different Materials Using Lathe

Abstract

This paper describes surface enhancement by low plasticity burnishing (LPB). It is achieved by high rotational speed of the tool with less compressive force. The high rotational speed is achieved by using a pneumatic actuator of the order of 5,000–11,500 rpm by supplying the air pressure of 1–4 bar, respectively. The process is carried out in a lathe. The LPB process is analyzed using brass, EN24, AISI 1020 and aluminum 6061 materials by varying input parameters, such as tool speed and burnishing force. The surface characteristics such as surface roughness, micro-Vickers hardness and out-of-roundness have been studied. The minimum surface roughness, micro-Vickers hardness and out-of-roundness for brass material obtained are 0.263 μm, 268 HV and 0.008 mm, respectively. The minimum surface roughness, micro-Vickers hardness and out-of-roundness for EN24 material obtained are 0.312 μm, 472 HV and 0.001 mm, respectively. The minimum surface roughness, micro- Vickers hardness and out-of-roundness for AISI 1020 material obtained are 0.32 μm, 422 HV and 0.004 mm, respectively. The minimum surface roughness, micro-Vickers hardness and out-of-roundness for aluminum 6061 material obtained are 0.224 μm, 144 HV and 0.01 mm, respectively.