I was then on a roll to get the chair finished, I have a terrible habit whenever I am doing anything like this to focus myself entirely on the end result. (I am the sort of person who is already hanging new curtains and flumping the new cushions before the paint is dry when we de...
In a preliminary experiment, different percentages (30 wt% and 10 wt%) of the particles were tested as an additive to the sole material. The resulting material (which is shown in Figure 5b,c) is not homogeneous like the standard material. This suggests that the mixing capacity of the two...
In addition, a confirmation experiment is conducted to verify the results of the MFO algorithm’s optimal combination of turning parameters. Keywords: Hastelloy X; turning; cutting force; surface roughness; liquid nitrogen; grass-hooper optimization algorithm; moth-flame optimization algorithm...
A point selection test was carried out, as shown in Figure 4a, and the mean value was taken after measurement. The test equipment and test procedure are shown in Figure 4. A comparison of the residual stress obtained by the simulation and the experiment is shown in Figure 5. Under ...
Figure 3.Microstructure of the tool with 127X magnification: (a) external zone and (b) internal zone. EHT: Electron High Tension. WD: Working Distance. Table 1.Chemical composition of the cutting tool. The experiment was developed for a dry (1) turning operation and with the use of MQL ...
(SANDVIK Corp., Stockholm, Sweden). For flood tests, a flow rate of 85 L/h of synthetic green coolant was selected. For low initial lubrication conditions tests a quantity of 2 mL was provided to carry out the turning of the whole cylinder. Taking into account the machining time employed...
2.1. Hard Turning Experiment The workpiece was 42CrMo4 high-strength steel bar (Hunan Valin Xiangtan Iron and Steel Co., Ltd., Hunan, China) with a size ofØ70 × 300 mm, and the macrohardness of the steel bar was 50 HRC after the heat treatment of water quenching at 850 °C and ...
The pH test was performed using a digital pH meter shown in Figure 2. The responses of the pH values were subjected to statistical analysis using Minitab 16 application (Design of Experiment). The analysis software employs a second-degree polynomial, approximated by Equation (4), to predict ...