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도자기용 단가마에서 CO<sub>2</sub>분석기를 사용한 효율적 소성방법 연구 I. 도자기 유약개발에 관한 연구
한상목,Han, Sang-Mok 강원대학교 산업기술연구소 1983 産業技術硏究 Vol.3 No.-
There are chief concerns every ceramist must keep in mind when firing a single kiln : Being able to read and control the kilns temperature as the firing progresses and as the kiln cools after firing. Controlling the atmosphere of the kiln in order to create desired glaze and clay body effects. Getting the most efficient use from the fuel-the most heat possible from the least fuel possible. The more exactly, author can control these factors with some result.
한상목(Sang-mok Han),김태윤(Tae-yoon Kim),김정환(Jeong-hwan Kim),김진구(Jin-gu Kim),김영주(Young-ju Kim),우남섭(Nam-sub Woo),황영규(Young-kyu Hwang) 대한기계학회 2014 대한기계학회 춘추학술대회 Vol.2014 No.11
In directional drilling, it is difficult to adjust and control the cuttings, so it is very important to evaluate the flow characteristics of a drilling flow field. In this study, solid-liquid two-phase flow experiments have been carried out in Newtonian and Non-Newtonian fluid for hole inclinations from vertical to 75 degrees, flow velocities from 0.33 m/s to 0.66 m/s, particle concentration from 4 to 16 %, and pipe rotations from 0 to 400 rpm. Pressure drop within the test section, and particle volume fraction are measured for the above test conditions. These quantities were influenced by particle concentration within the flow, pipe rotation, flow volume, and inclination of the annulus. Moreover, empirical correlations were developed for estimating friction coefficient and particle volume fraction inside annulus. The new correlations generated in this study is believed to be very practical and handy when they are used in the field. Therefore, this study can provide meaningful data for directional drillings.
Al₂TiO₅-점토 복합체를 이용한 원적외선방사재질의 개발
한상목(Han Sang Mok),신대용(Shin Dae Yong) 강원대학교 산업기술연구소 2000 産業技術硏究 Vol.20 No.1
Sintered Al₂TiO₅ has a very low thermal expansion and infrared radiative selectively emitting large amounts of far infrared rays. However, it is week in mechanical strength. Spectral infrared emittance, thermal expansion coefficient, and mechanical strength of Al₂TiO₅-clay composites were studied to develop a material for far infrared radiators. The composites containing 10~50 mass% Jungsan clay had high emittance in the range of 2,000~200cm-1. The bending strength of the Al₂TiO₅-clay composites increased with increasing clay content. The Al₂TiO₅-clay composites with a clay content of 50mass% and heat-treated at 1,200℃ had a large strength for infrared radiators ; 86MPa. The average linear thermal expansion coefficient from 200~1,000℃ of the 50mass% Jungsan clay containing composited heat-treated at 1,200℃ was lower than 3.87X10-6/℃.
한상목(Sang-mok Han),김태윤(Tae-yun Kim),김정환(Jeong-hwan Kim),김영주(Young-ju Kim),황영규(Young-kyu Hwang) 대한기계학회 2013 대한기계학회 춘추학술대회 Vol.2013 No.12
In directional drilling, it is difficult to adjust and control the cuttings, so it is very important to evaluate the flow characteristics of a drilling flow field. In this study, solid-liquid two-phase flow experiments have been carried out in Non-Newtonian fluid for hole inclinations from vertical to 75 degrees, flow velocities from 0.33 m/s to 0.66 m/s, particle concentration from 4 to 16 %, and pipe rotations from 0 to 400 rpm. Pressure drop within the test section, and particle volume fraction are measured for the above test conditions. These quantities were influenced by particle concentration within the flow, pipe rotation, flow volume, and inclination of the annulus. Moreover, empirical correlations were developed for estimating friction coefficient and particle volume fraction inside annulus. The new correlations generated in this study is believed to be very practical and handy when they are used in the field. Therefore, this study can provide meaningful data for directional drillings.
한상목(Sang-mok Han),우남섭(Nam-sub Woo),하지호(Ji-ho Ha),김영주(Young-ju Kim) 대한기계학회 2018 대한기계학회 춘추학술대회 Vol.2018 No.12
In directional drilling, it is difficult to adjust and control the cuttings, so it is very important to evaluate the flow characteristics of a drilling flow field. In this study, solid-liquid two-phase flow experiments have been carried out in non-Newtonian fluids for hole inclinations from vertical to 75 degrees, flow velocities from 0.33 m/s to 0.66 m/s, particle concentration from 4 to 16 %, and pipe rotations from 0 to 400 rpm. Pressure drop within the test section, and particle volume fraction are measured for the above test conditions. These quantities were influenced by particle concentration within the flow, pipe rotation, flow volume, and inclination of the annulus. Moreover, empirical correlations were developed for estimating friction coefficient and particle volume fraction inside annulus. The new correlations generated in this study are believed to be very practical and handy when they are used in the field. Therefore, this study can provide meaningful data for directional drillings.