This research paper depicts the process of used liquid nitrogen at the interface of TiN coated carbide cutting tool insert (rake face) and AISI D3 workpiece. Design of experiments (DoE) was planned according to Taguchi L₉ (OA) orthogonal array. The experimental results during machining such as cutting force, machining time and temperature were optimized by Taguchi S/N ratio and analysed by ANOVA. The contribution of machining parameters of (i) speed, (ii) feed and (iii) depth of cut for each response were evaluated. Feed had the highest effect on the percentage of contribution of 57.21% and 52.21% for cutting force and machining time, respectively. Speed had the highest effect on the contribution as 79.57% for the temperature at the interface of insert and workpiece. The predicted values at the optimum level of machining parameters for cutting force, machining time and temperature were 44.49 N, 37.09 sec. and 24.99°C, respectively. Regression models were made. The R-Sq values were 96.59, 89.34 and 96.09% for cutting force, machining time and temperature, respectively. The ratio of an average thickness of generated chip and feed was considered as the chip compression ratio. It was observed that the generated chips during cryogenic turning were thin, discontinuous, long snarled and most of the material had side flow on either side.

该研究论文描述了在TiN涂层硬质合金切削刀片（前刀面）和AISI D3工件的界面处使用液氮的过程。根据田口L ₉计划了实验设计（DoE）（OA）正交数组。利用Taguchi信噪比（S / N）优化了加工过程中的切削力，加工时间和温度等实验结果，并使用ANOVA进行了分析。评估了每个响应的加工参数（i）速度，（ii）进给和（iii）切削深度的贡献。进料对切削力和加工时间的贡献率最高，分别为57.21％和52.21％。速度对刀片和工件界面温度的贡献最大，为79.57％。对于切削力，加工时间和温度，在最佳加工参数水平下的预测值为44.49 N，37.09 sec。和24.99°C。建立了回归模型。切削力，加工时间和温度的R-Sq值分别为96.59、89.34和96.09％，分别。将产生的切屑和进料的平均厚度之比作为切屑压缩率。观察到，在低温车削过程中产生的切屑很薄，不连续，长咆哮，并且大多数材料的两侧都有侧向流动。