http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
구멍 가공에서 바이트의 길이와 표면조도와의 관계에 관한 연구
오태균(Tae-Goun Oh),고상규(Sang-Kyue Go),진용주(Yong-Ju Jin) 산업기술교육훈련학회 2010 산업기술연구논문지 (JITR) Vol.15 No.2
The paper is on the study of correlation between protruded tool length and surface roughness in inner turning. The purpose of the study is to find out the correlation between protruded tool length and surface roughness in inner cutting by a turning machine. The experiment has been performed in various cutting conditions, protruded tool lengths and cutting speeds, with the inserted cermet tool tip(CT10). Surface roughness of the machined parts in various conditions has been measured by surface roughness measuring machine MITUTOYO-402. From the experimental results, The conclusions are as follows : Surface roughness of machined part can be kept in good under the condition, that the protruded length is 4 times of the cutting tool diameter , and the roughness is independent to the cutting speed in the condition.
서브머어지드 아크 용접시 Ni이 熔接部에 미치는 機械的性質에 대한 고찰
전우청(Woo-Cheong Jeon),오태균(Tae-Goun Oh) 산업기술교육훈련학회 2010 산업기술연구논문지 (JITR) Vol.15 No.1
I searched for the amount of Ni-adding reach mechanical properties to the welding point of a soft steel plate. Ni have four additions : 0, 1.5, 3, 4.5 and flux was made of weldment in condition being most suitable using MF 38 of the steel goods didn t have an effect of the part of welding point. I examined impact of charpy V notch in extent of -60℃ to -20℃ tensile stress and hardness system in high temperature. I got a conclusion like this through above. 1. The amount of Ni adding were 1.5% with being most suitable in extent of -60℃ to -20℃. 2. The move of Ni amount increase the more of the welding power of surrender. 3. The maximum of ultimate tensile stress is increasing as the amount of Ni and got the maximum of ultimate tensile stress evaluation in 3.0%. 4. It was found that hardness evaluation is a little low in case of the pare of heat effect and increase in the welding point.
진용주(Yong-Ju JIN),오태균(Tae-Goun OH) 산업기술교육훈련학회 2008 산업기술연구논문지 (JITR) Vol.13 No.4
Coil of thin steel sheet is often prone to failure when it is transported and laded into yard. Evaluation for the transportation of steel sheet coil is needed to prevent from failure with steel sleeve of suitable thickness inserted into the coil inside. The coil is rolled by steel sleeve of about 150℃, internal stress of 49 MPa and it cools down to the normal temperature, and it is transported by an O-hook of crane. In this study, stress analysis of sleeve by finite element method(FEM) were carried out under the condition of typical load and thermal stress and strength evaluation was performed by an optimal thickness of the sleeve with the strength, safety, durability and optimal design being considered.