Proses pemesinan CNC wet milling pada material stainless steel AISI 316 dengan beberapa parameter pemotongan telah berhasil dilakukan dalam penelitian ini. Analisis optimasi parameter pemotongan menggunakan metode Taguchi dengan teknik perhitungan S/N ratio dan ANOVA. Untuk merancang proses eksperimentasi CNC wet milling dengan tiga parameter pemotongan yang bervariasi, maka digunakan teknik L9 orthogonal array. Dari tabel S/N ratio yang telah dianalisis, maka didapatkan bahwa kecepatan pemotongan (feed rate) menjadi faktor yang paling berpengaruh terhadap perubahan kekasaran permukaan bila dibandingkan dengan parameter kecepatan spindel dan kedalaman pemotongan pada material stainless steel AISI 316. Disisi lain, hasil pengolahan data ANOVA menunjukkan bahwa persentase kontribusi spindle speed lebih berpengaruh terhadap kekasaran permukaan bila dibandingkan feed rate. Paramater pemotongan optimal yang ditunjukkan dari spindle speed sebesar 3184 rpm, feed rate sebesar 541,4 mm/min dan depth of cut sebesar 0,3 mm. Parameter pemotongan optimal yang merupakan hasil proses eksperimen ini telah dibandingkan dengan nilai prediksi yang selanjutnya memperlihatkan korelasi yang berkaitan dengan nilai error yang relatif sangat kecil. Maka dari itu, penelitian ini memberikan sumbangsih pengembangan yang signifikan pada peningkatan machineability, kualitas, dan produktifitas proses pemesinan CNC milling untuk material stainless steel AISI 316.
Optimization of CNC wet milling cutting parameters for stainless steel AISI 304 was successfully attempted by using Taguchi method (S/N ratio and ANOVA). L9 orthogonal array is utilized for designing the experiments with 3 levels of spindle speeds and feed rates with an increment depth of cut. The effect of cutting parameters on surface roughness was examined. According to S/N ratio’s response table, the result obtained for spindle speed fervently indicates that spindle speed is the most pivotal factor for impacting the surface roughness than feed rate for stainless steel AISI 304. ANOVA results depicted that the contribution percentage of spindle speed for surface roughness is higher than feed. Optimum values of cutting parameters were endowed at a spindle speed of 3184 rpm and a feed rate of 1528,4 mm/min. The experimental values at optimum cutting condition were compared with predicted values and it reveals a significant congruity with the experimental results with a low error percentage. Therefore, this experiment aims to develop the productivity and quality of CNC milling operations for stainless steel AISI 304. In addition, number of studies for cutting parameter optimization stainless steel AISI 304 was not barely done yet. Hereafter, more investigations still needed to optimize the cutting parameters of this stainless steel AISI 304 for various machining operations specifically on CNC milling process.
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