Quality-Driven Process Optimisation of Finish Turning on 316L Stainless Steel for a Customised Cutting Tool

Khan, Pervez Alam (author), Kramar, Davorin (mentor)

he purpose of this thesis was to investigate the effect of a customised tool's cutting-edge radius and high-pressure jet cooling on the CNC finish turning of 316L stainless steels. The primary goal was to use the design of experiment to determine the best process parameter,particularly to achieve N5 grade surface quality while also improving productivity, reducing forces, and minimising cutting temperature, as well as producing acceptable chips. RSM-based Box-Behnken design was used to investigate the relationship between cutting-edge radius, feed, and depth of cut. ANOVA and regression analysis were used to analyse data.The expected optimised values yielded the desired output responses verified by the conformity experiments. Finally, this study revealed findings that support clean manufacturing.

• Language: English
• Keywords: finish turning, 316L stainless steel, N5 grade surface, design of experiment, clean manufacturing
• Work type: Master's thesis/paper
• Typology: 2.09 - Master's Thesis
• Organization: FS - Faculty of Mechanical Engineering
• Year: 2025
• Number of pages: XXII, 67 str.
• PID: 20.500.12556/RUL-175022
• UDC: 621.941:669.14.018.8:519.23(043.2)
• COBISS.SI-ID: 258818819
• Publication date in RUL: 14.10.2025

Secondary language

• Language: Slovenian
• Title: Optimizacija kakovosti procesa končnega struženja nerjavečega jekla 316L za prilagojeno rezalno orodje

Abstract

Namen te diplomske naloge je bil raziskati vpliv polmera rezalnega roba orodja po meri in hlajenja z visokotlačnim curkom na CNC končno struženje nerjavnih jekel 316L. Primarni cilj je bil z zasnovo eksperimenta določiti najboljši procesni parameter, zlasti za doseganje kakovosti površine razreda N5, hkrati pa izboljšati produktivnost, zmanjšati sile in zmanjšati temperaturo rezanja ter ustvariti sprejemljive odrezke. Za raziskavo razmerja med polmerom rezalnega roba, pomikom in globino reza je bila uporabljena zasnova Box-Behnken na osnovi RSM. Za analizo podatkov sta bili uporabljeni ANOVA in regresijska analiza. Pričakovane optimizirane vrednosti so dale želene izhodne odzive, ki so jih potrdili poskusi skladnosti. Končno je ta študija razkrila ugotovitve, ki podpirajo čisto proizvodnjo.

• Keywords: fino struženje, 316l nerjavečega jekla, N5 površinska stopnja, zasnova eksperimenta, čista proizvodnja