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플라즈마 질소 이온 주입한 초경공구의 고속가공시 공구마멸 특성
박성호(Sung-Ho Park),왕덕현(Duck Hyun Wang) 한국기계가공학회 2022 한국기계가공학회지 Vol.21 No.5
The ion implantation technology changes the chemical state of the surface of a material by implanting ions on the surface. It improves the wear resistance, friction characteristics, etc. Plasma ion implantation can effectively reinforce a surface by implanting a sufficient amount of plasma nitrogen ions and using the injection depth instead of an ion beam. As plasma ion implantation is a three-dimensional process, it can be applied even when the surface area is large and the surface shape is complicated. Furthermore, it is less expensive than competing PVD and CVD technologies. and the material is The accommodation range for the shape and size of the plasma is extremely large. In this study, we improved wear resistance by implanting plasma nitrogen ions into a carbide end mill tool, which is frequently used in high-speed machining.
질소이온 코팅 SCM415강의 마찰.마모특성에 관한 연구
류성기,하위파,손유선,Lyu, Sung-Ki,He, Hei-bo,Son, Yu-Sun 한국트라이볼로지학회 2007 한국윤활학회지(윤활학회지) Vol.23 No.1
SCM415 alloy was implanted with nitrogen ions using plasma source ion implantation (PSII), at a dose range of $1{\times}10^{17}\;to\;6{\times}10^{17}N^{+}cm^{-2}$. Auger electron spectrometry (AES) was used to investigate the depth profile of the implanted layer. Friction and wear tests were carried out on a block-on-ring wear tester. Scanning electron microscopy (SEM) was used to observe the micro-morphology of the worn surface. The results revealed that after being implanted with nitrogen ions, the frictional coefficient of the surface layer decreased, and the wear resistance increased with the nitrogen dose. The tribological mechanism was mainly adhesive, and the adhesive wear tended to become weaker oxidative wear with the increase in the nitrogen dose. The effects were mainly attributed to the formation of a hard nitride precipitate and a supersaturated solid solution of nitrogen in the surface layer.
질소이온코팅 SCM415강의 마찰ㆍ마모특성에 관한 연구
류성기(Sungki Lyu),하휘파(HuiBo He),이상현(Sanghyun Lee),이동규(Donggyu Lee),손유선(Yusun Son) 한국생산제조학회 2006 한국공작기계학회 춘계학술대회논문집 Vol.2006 No.-
SCM415 alloy was implanted with nitrogen ions using plasma source ion implantation(PSII), at a dose range of 1×10 to 6×10¹?N?㎝?². Auger electron spectrometry(AES) was used to investigate the depth profile of the implanted layer. Friction and wear tests were carried out on a block-on-ring wear tester. Scanning electron microscopy(SEM) was used to observe the micro-morphology of the worn surface. The results revealed that after being implanted with nitrogen ions, the frictional coefficient of the surface layer decreased, and the wear resistance increased with the nitrogen dose. The tribological mechanism was mainly adhesive, and the adhesive wear tended to become weaker oxidative wear with the increase in the nitrogen dose. The effects were mainly attributed to the formation of a hard nitride precipitate and a supersaturated solid solution of nitrogen in the surface layer.
질소이온코팅 SCM415강의 마찰ㆍ마모특성에 관한 연구
류성기(Sungki Lyu),하휘파(HuiBo He),이상현(Sanghyun Lee),이동규(Donggyu Lee),손유선(Yusun Son) 한국생산제조학회 2006 한국생산제조시스템학회 학술발표대회 논문집 Vol.2006 No.5
SCM415 alloy was implanted with nitrogen ions using plasma source ion implantation(PSII), at a dose range of 1×10 to 6×10¹?N?㎝?². Auger electron spectrometry(AES) was used to investigate the depth profile of the implanted layer. Friction and wear tests were carried out on a block-on-ring wear tester. Scanning electron microscopy(SEM) was used to observe the micro-morphology of the worn surface. The results revealed that after being implanted with nitrogen ions, the frictional coefficient of the surface layer decreased, and the wear resistance increased with the nitrogen dose. The tribological mechanism was mainly adhesive, and the adhesive wear tended to become weaker oxidative wear with the increase in the nitrogen dose. The effects were mainly attributed to the formation of a hard nitride precipitate and a supersaturated solid solution of nitrogen in the surface layer.
초경 엔드밀의 플라즈마 이온 주입과 저온 열처리를 통한 내마멸성 향상
강성기(Seong-Ki Kang),왕덕현(Duck-Hyun Wang),김원일(Won-Il Kim) 한국생산제조학회 2011 한국생산제조학회지 Vol.20 No.2
In this research, nitrogen plasma source ion implantation(PSII) of non-coated tungsten carbide endmill tools was conducted with low heat treatment for increasing wear resistance. After the low heat treatment of PSIIed tools to give a homogeneity of wear resistance, the surface modification of tools was analyzed by hardness test, surface roughness and cutting forces. As for the resultant cutting forces, low heat treatment in temperature of 400℃ and 500℃ is stable because of low cutting resistance. The 20-minutes heat treated tool at spindle speed 25000rpm has superiority of surface roughness, Ra of 0.420㎛ and was found to have good wear resistance. The higher hardness value was obtained by increasing temperature from 300℃ to 600℃ for PSIIed tools with low heat treatment. As the PSIIed tools under 10minutes at temperature of 600℃ have the highest hardness as Hv of 2349.8, It was analyzed that temperature processing give much influences on hardness.
플라즈마 이온주입 공구의 가공조건이 절삭력과 표면 거칠기에 미치는 영향 분석
강성기(Seong Ki Kang) 한국생산제조학회 2012 한국생산제조학회지 Vol.21 No.5
In this study, three dimensional cutting force components and surface roughness appeared in high speed cutting by using tungsten carbide endmill tools implanted ion or not found mutual relations through several analysis of statistical dispersion. It is showed that cutting force(Fx) is affect with spindle speed and feed rate, cutting force(Fy) is affect with spindle speed and ion implantation time and cutting force(Fz) is affect with feed rate in interaction through the statistical method of ANOVA of cutting force and surface roughness, it is analyzed that it is affected of spindle speed and feed rate in surface roughness.