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논문 상세정보

AIN-hBN계 머시너블 세라믹스의 기계적 특성 및 엔드밀링 가공성 평가

Mechanical Properties and End-milling Characteristic of AIN-hBN Based Machinable Ceramics

Abstract

In this study, machining characteristics of AIN-hBN composites were evaluated in end-milling process. As a first step, AIN-hBN composite specimens with various hBN contents were prepared using hot press method. Material properties of the composites, such as relative density, Young's modulus and fracture toughness, were measured and compared. Then, a series of end-milling experinients were performed under various cutting conditions by changing cutting speed, depth-of-cut and feed rate. Cutting force variations were measured using a tool dynamometer during the cutting experiments. Machined surfaces of the specimens were observed using SEM and a surface pro filer to investigate the surface integrity changes. The cutting force decreased with an increases of hBN content. The cutting process was almost impossible for monolithic AIN, owing to severe chipping. In contrast, at high content of hBN, surface damage and chipping decreased, and better surface roughness can be obtained.

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이 논문을 인용한 문헌 (5)

  1. Beck, Si-Young ; Shin, Bong-Cheol ; Cho, Myeong-Woo ; Cho, Won-Seung 2008. "Experimental Investigations on Micro End-milling Cutting Characteristics Comparison and Tool Wear Behavior of AlN-hBN Composites Sintered by Hot-pressing" 한국공작기계학회논문집 = Transactions of the Korean society of machine tool engineers, 17(4): 104~111 
  2. Kwak, Tae-Soo 2009. "Machining Properties to Nano-Level Mirror Surface Finishing for Fine Grained WC-Co 18% Alloy using Magnetic Polishing Slurry" 한국세라믹학회지 = Journal of the Korean Ceramic Society, 46(1): 102~107 
  3. Park, Jae-Hyun ; Lee, Won-Jae ; Kim, Il-Soo 2010. "Al2TiO5-machinable Ceramics Made by Reactive Sintering of Al2O3 and TiO2" 한국세라믹학회지 = Journal of the Korean Ceramic Society, 47(6): 498~502 
  4. Park, Jeong Hyun ; Jung, Dong Sik ; Lee, Won Jae ; Kim, Il Soo 2012. "Machinable Ceramics Made by the Reaction Sintering of PSZ, Al2O3 and TiO2" 한국세라믹학회지 = Journal of the Korean Ceramic Society, 49(6): 581~585 
  5. Kwak, Jae-Seob ; Kwak, Tae-Soo 2013. "Review of Technology Trends for Ceramics Removal-Machining" 한국정밀공학회지 = Journal of the Korean Society of Precision Engineering, 30(12): 1227~1235 

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