Multi-Response Optimization of Interrupted Cutting for High-Entropy Alloy Nitride Films Onto Cbn Tools Inserts

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基本資料

Project title

Code/計畫編號

MOST109-2622-E262-003-CC3

Translated Name/計畫中文名

CBN刀具沉積高熵合金氮化物薄最佳化於斷續切削之研究

Funding Organization/主管機關

National Science and Technology Council

Co-Investigator(s)/共同執行人

陳俊生(計畫主持人)
何靖國

Department/Unit

Department of Mechanical Engineering,LHU

Website

https://www.grb.gov.tw/search/planDetail?id=13454294

Year

2020

Start date/計畫起

01-06-2020

Expected Completion/計畫迄

31-05-2021

Co-Investigator(s)

Jihng-Kuo Ho

Bugetid/研究經費

620千元

ResearchField/研究領域

機械工程

Cubic nitride boron (2NUCNGA432-BNX20 CBN inserts) tools are widely used in the metal-working industry for cutting various hard materials such as high-speed tool steels, die steels, bearing steels, case-hardened steels, white cast iron, and alloy cast irons. In many applications, cutting of ferrous materials in their hardened condition can replace grinding to give significant savings in cost and productivity rates. High entropy alloys (HEAs) nitride film coatings have been studied extensively, due to their high hardness, wear resistance, excellent thermal stability and good oxidation resistance.This study determines the optimal settings for the deposition of HEAs nitride films using reactive direct current magnetron sputtering (DCMS), with pure HEAs (AlCrMoTaTiZr) target and Ar plasma and N2 reactive gases. Using grey-Taguchi method and an L9 34, this study determines the effect of deposition parameters: Deposition time (30, 40, 50 min), Substrate DC bias (–70, –120, –170 V), DC power (200, 300, 400 W), Substrate temperature (250, 350, 450oC), on interrupted turning 50CrMo4 steel machining, the structural and mechanical properties. A statistical analysis of the signal-to-noise (S/N) ratio is followed by an analysis of variance (ANOVA). The films are characterized using X-ray diffraction (XRD), atomic force microscopy (AFM), scanning electron microscopy (SEM), transmission electron microscopy (FEI-TEM), a nanoindenter, and for interrupted turning performances. High power impulse magnetron sputtering (HIPIMS) technique allows us to achieve high ionization in the sputtered material by pulsing the target with a high peak power density. Additionally, in order to improve the quality of the (AlCrMoTaTiZr)N thin films, HIPIMS was also investigated. 立方氮化硼(Cubic Nitride Boron, CBN)高硬度及導熱性，應用於切削刀具及研磨工具，CBN刀具廣用於高硬度淬火鋼材料切削。本產學合作計畫目的:CBN刀具(2NUCNGA432-BNX20 CBN inserts)，表面沉積高熵合金氮化物薄膜，應用於鉻鉬鋼(高硬度 HRC 58)斷續切削，提升切削品質，有效延長刀具使用壽命，降低切削加工成本。使用等莫耳(a single equimolar AlCrMoTaTiZr)高熵合金靶材，Ar為電漿氣體(plasma gas)，N2為反應性氣體(reactive gas)，直流磁控反應濺鍍形成高熵合金- (AlCrMoTaTiZr)N 氮化物薄膜。應用田口實驗設計，(L9 34)直交表，配合變異數分析，探討不同的濺鍍參數，對(AlCrMoTaTiZr)N薄膜特性的影響。分析(AlCrMoTaTiZr)N薄膜結晶品質，微結構(X-Ray, XRD, SEM, TEM及AFM)，奈米壓痕微硬度及分析薄膜成份。使用(AlCrMoTaTiZr)N薄膜鍍層刀具，進行高鉻鉬鋼(高硬度 HRC 58)工件斷續切削研究。製備參數: 固定N2/(Ar+ N2)=30%，total flow = 20 sccm，改變薄膜濺鍍參數，Deposition time (30, 40, 50 min), Substrate DC bias (–70, –120, –170 V), DC power (200, 300, 400 W), Substrate temperature (250, 350, 450oC)。結合田口-灰關聯理論分析，將實驗數據品質特性進行灰關聯生成，求出各序列灰關聯度及排序，進行刀具壽命實測分析，獲得影響鍍膜特性的重要因子，及最佳(AlCrMoTaTiZr)N氮化物薄膜參數組合，配合實驗驗證及再現性檢測。比較直流磁控濺鍍及高功率脈衝磁控濺鍍系統，沉積(AlCrMoTaTiZr)N薄膜，對CBN鍍層刀具切削高硬度鉻鉬鋼工件的影響。期望能提高刀具壽命，降低工件表面粗糙度，增加材料移除率，有效提升刀具切削能力2~3 倍。若能順利研發成功，兼具培養高階研發人才，技轉給配合廠商(日泓精密股份有限公司)，提昇廠商競能力，有很大商機，值得研發。

Keyword(s)

CBN tools inserts
HEAs nitride films
Optimization
Interrupted cutting
CBN刀具
高熵合金氮化物薄
最佳化
斷續切削

DSpace CRIS

Multi-Response Optimization of Interrupted Cutting for High-Entropy Alloy Nitride Films Onto Cbn Tools Inserts

基本資料

Description