• 제목/요약/키워드: Abrasive Water-jet

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어브레이시브 워터제트를 이용한 알루미나 세라믹스의 가공 (Abrasive Water Jet Machining of Alumina Ceramics)

  • 최기상;최기흥;김정수
    • 대한기계학회논문집
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    • 제18권8호
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    • pp.2073-2080
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    • 1994
  • In this paper, a model of material removal in abrasive water jet machining of brittle material is developed, and experimentally evaluated. Abrasive water jet machining proved to yield better material removal rate than other machining techniques for hard and brittle material (alumina ceramics). It was also found that large scale fracture may develop at the exit of the jet from the material. The fracture size was predicted as a function of water jet pressure and size of the hole. Finally, the feasibility of using acoustic emission signals for in-process monitoring of the abrasive water jet machining process is investigated.

Abrasive Water-Jet이 가공물의 형상에 미치는 영향 (Influence of Abrasive Water-Jet on Workpiece Geometry)

  • 장현석;하만경;류인일;곽재섭;이상진;이기백
    • 한국공작기계학회:학술대회논문집
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    • 한국공작기계학회 2002년도 춘계학술대회 논문집
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    • pp.585-590
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    • 2002
  • Abrasive water-jet(AWJ) machining is a new cutting technology. The AWJ can cut various materials touch as metal, glass and stone. However, the AWJ machining makes troubles including kerf, rounding and side taper. In this study, we investigated the correlation between parameters of abrasive water-jet machining arid cutting characteristics. The machining parameter were the material thickness and the traverse speed. The experiment was conducted to cut the stainless steel(STS41) and the mild steel(SS41) specimens. The results of the experiment weirs presented as the relation between cutting conditions and trouble of a dimension error, a conner error, an uncut width and a kerf.

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Abrasive Water-Jet 가공에서 공작물의 절단특성 (Cutting Characteristics of Workpiece Using Abrasive Water-Jet Machining)

  • 장현석;하만경;곽재섭;박후명;이상진;이기백
    • 한국정밀공학회:학술대회논문집
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    • 한국정밀공학회 2002년도 춘계학술대회 논문집
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    • pp.984-987
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    • 2002
  • Abrasive water-jet(AWJ) machining is a new cutting technology. The AWJ can cut various materials such as metal, glass and stone. However, the AWJ machining makes troubles including kerf, rounding and side taper. In this study, we investigated the correlation between parameters of abrasive water-jet machining and cutting characteristics. The machining parameters were the material thickness and the traverse speed. The experiment was conducted to cut the stainless steel(STS41) and the mild steel(SS41) specimens. The results of the experiment were presented as the relation between cutting conditions and troubles of a dimension error, a conner error, an uncut width and a kerf.

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연마제 혼합액 제트의 절단 성능에 관한 연구 (An experimental study of cutting abilities of an abrasive water jet system)

  • 안영재;유장열;권오관;김영조
    • 대한기계학회논문집
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    • 제13권4호
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    • pp.611-617
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    • 1989
  • 본 연구에서는 제트 분사 시스템을 제작하여 절단 성능에 관게하는 여러 변수중 고압수의 압력, 연마제의 크기 및 공급량, 그리고 공작물의 이송속도의 영향을 실험적으로 연구하였다.

입자 워터 젯의 이송속도가 공작물의 치수정밀도에 미치는 영향 (Effects of Traverse Speed on Dimensional Error in Abrasive Water-Jet)

  • 곽재섭;하만경
    • 한국공작기계학회논문집
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    • 제13권3호
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    • pp.1-7
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    • 2004
  • Abrasive water-jet(AWJ) machining can cut various materials such as metal, glass and plastics. However, the AWJ machining has some troubles including kerf, rounding and side taper. In this study, we experimently investigated the correlation between the traverse speed of the abrasive water-jet and the dimensional error of the workpiece according to the thickness and the types of the material. The specimen was the stainless steel and the mild steel and the predetermined contour cutting was conducted. A comer radius error, an uncut width and a kerf were measured and evaluated.

Abrasive-Assisted High Energy Water-Jet Machining Characteristics of Solid Wood

  • Lee, Hyoung-Woo
    • Journal of the Korean Wood Science and Technology
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    • 제32권3호
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    • pp.1-7
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    • 2004
  • The application of abrasive-assisted high energy water-jet was investigated as a possible new method of cutting wood. In this study the maximum cutting speeds for species of various wood density were determined and water-jet machining characteristics were investigated for sixteen Korean domestic species. The maximum cutting speed ranged from 200 to 750 mm/min. The results indicate that wood density affects machining characteristics such as maximum cutting speed, surface roughness, and kerf width. Roughness of surface generated increased and kerf width decreased as penetration depth increased.

연마재 워터젯 가공을 이용한 유리 미세 가공 성능 평가 (Evaluation of Efficiency on Glass Precision Machining by using Abrasive Water-jet)

  • 박연경;박강수;김형훈;신보성;고종수;고정상
    • 한국정밀공학회지
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    • 제27권7호
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    • pp.87-93
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    • 2010
  • This paper presents an evaluation of efficiency on glass precision machining by using abrasive water-jet machine. In this study, problems of conventional water-jet machining are examined experimentally and are analysized numerically. Especially, the reason of whitening on the machined surface of biochip glass is determined. It is found that the mass flow rate of abrasive input and transverse speed of water-jet are key parameters to control the direct machining of micro hole and channel on a glass substrate. Based on results of experimental analysis, possibility of direct fabrication of micro holes and channels on a glass substrate is successfully confirmed.

습식 워터 젯 정밀 절삭 가공용 다이아몬드 오리피스 제조 및 응용 (Manufacture and Application of Diamond Orifices in Abrasive Suspension Jet for Micro Machining)

  • 김연철;박희동;조재한;강석중
    • 한국분말재료학회지
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    • 제15권6호
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    • pp.509-513
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    • 2008
  • High-pressure abrasive entrained jet have rapidly become important machining technology over the last two decades. However, suspension jet by high-pressure has been recently developed for packaging sawing. Ideally, diamond materials should be used for components in abrasive water-jet systems that are subject to high erosive conditions. Using the diamond orifices improve maintenance and extend wear part life. This paper gives insights to using an abrasive suspension jet with diamond orifice. The influences of orifice material and orifice design are evaluated.

워터젯 수압분사와 화염버너에 의한 석판재 표면처리의 품질특성 비교연구 (Comparison Study on Quality Characteristics of Surface Treatment of Stone Board Materials by Water-jet System and Flame-burner)

  • 강지호;장명환
    • 대한안전경영과학회지
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    • 제5권1호
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    • pp.115-128
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    • 2003
  • To comparison the surface treatment methods of stone board materials, the results of Dorry's abrasive test were 23.4 for water-jet system and 18.9 for flame-burner system. Therefore abrasive hardness, the stone board materials by the water-jet system was greater than one by flame-jet system. As a result of Shore's hardness test, the stone board materials by water-jet system was twice greater than one by flame-jet system. Authors carried out microscopic observation to survey a defection of the composition minerals for two methods, but all of the both methods have not founded a defection. Therefore, the stone board materials by water-jet system was greater durability than one by flame-jet for the surface treatment methods.