A study of response surface methodology in the optimum parameter for stainless steel machining

• Main Authors: Lee, Yu-Hui, 李玉輝
• Other Authors: Hsu, Chun-Yao
• Format: Others
• Language: zh-TW
• Published: 2013
• Online Access: http://ndltd.ncl.edu.tw/handle/88100630487824933464

碩士 === 龍華科技大學 === 工程技術研究所 === 101 === Flank wear is commonly thought to result from abrasive wear of the cutting edge against the machined surface and has been used to specify the tool life. Surface roughness and roundness are widely used as technical requirements and product quality indexes for turning products. Most of all， flank wear of the cutting tool governs the stability， reliability of cutting and tool life. It has long been recognized machining parameters including cutting tools for different materials， cutting speed， feed rate， and cut depth should be selected to yield the desired product quality. In this study， dry turning of AISI 420 stainless steel tests was carried out. Response surface methodology (RSM) is an effective statistical technique for optimizing complex processes owing to it allows more efficient and easier arrangement and interpretation of experiments compared to other methods. In addition， chromium tungsten nitride (CrWN) thin films were deposited onto cutting tools for dry machining. In the confirmation runs， when using optimal process parameters， improvement of 15.7% was obtained in surface roughness， 3.3% in roundness and 17.4% in flank wear， respectively.