Machinability assessment of commercially pure titanium (CP-Ti) during turning operation: Application potential of GRA method

7th National Conference on Processing and Characterization of Materials

Khan, Akhtar^1 ; Maity, Kalipada^1

Department of Mechanical Engineering, National Institute of Technology Rourkela, Odisha, India^1

关键词: Commercially Pure titaniums;    Grey relational analyses (GRA);    Grey relational grade;    Machinability assessment;    Multiple regression analysis;    Multiple regression equations;    Surface roughness (Ra);    Tool wear;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/338/1/012005/pdf
DOI  :  10.1088/1757-899X/338/1/012005

来源: IOP

【 摘 要 】

This paper explores some of the vital machinability characteristics of commercially pure titanium (CP-Ti) grade 2. Experiments were conducted based on Taguchi's L9 orthogonal array. The selected material was machined on a heavy duty lathe (Model: HMT NH26) using uncoated carbide inserts in dry cutting environment. The selected inserts were designated by ISO as SNMG 120408 (Model: K313) and manufactured by Kennametal. These inserts were rigidly mounted on a right handed tool holder PSBNR 2020K12. Cutting speed, feed rate and depth of cut were selected as three input variables whereas tool wear (VBc) and surface roughness (Ra) were the major attentions. In order to confirm an appreciable machinability of the work part, an optimal parametric combination was attained with the help of grey relational analysis (GRA) approach. Finally, a mathematical model was developed to exhibit the accuracy and acceptability of the proposed methodology using multiple regression equations. The results indicated that, the suggested model is capable of predicting overall grey relational grade within acceptable range.