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Grit와 Air의 혼합비 최적화를 통한 블라스팅 효율 향상
배한진(Han-Jin Bae),백재진(Jae-Jin Baek),김을현(Eul-Hyun Kim),정몽규(Mong-Ku Chung),신칠석(Chil-Seok Shin),백광기(Kwang-Ki Baek) 대한기계학회 2004 대한기계학회 춘추학술대회 Vol.2004 No.11
Achieving the maximum blasting efficiency with minimum abrasive consumption is a critical concern in surface preparation stage of shipbuilding and offshore industry. Increasing the abrasive flow rate beyond the optimum point results in a major reduction in productivity even though the amount of abrasive used is larger. So, this study is intend to find out the optimum abrasive-to-air mixing ratio which can make a significant improvement in blasting efficiency and remarkably reduce the amount of abrasive used. From the test results, it can be identified that as the abrasive feeding rate is increased linearly, blasting efficiency is increased to a maximum point and then gradually decreased in the form of a bell-shaped.
백재진(Jae-Jin Baek),윤원준(Won-Jun Yun),이채석(Chae-seok Lee),정몽규(Mong-Ku Chung),신상룡(Sang-ryong Shin),권혁준(hyeog-jun kwon),이병헌(Byung-Hun Lee) 대한기계학회 2004 대한기계학회 춘추학술대회 Vol.2004 No.11
A significant amount of labor hour is being spent for clean up spent abrasives after blasting. So, for improving the efficiency of abrasive(grit) recovery process which acts as the neck of a battle in preceding coating stage, it was established the theoretical background for pneumatic transport technology in the abrasive recovery system as well as experimentally evaluated the effect of design parameters such as flow pattern, saltation<br/> velocity and pressure drop on the efficiency of the abrasive recovery system. And, by optimizing the operating parameter such as the length and diameter of suction hose, specification of recovery device, recovery mouth and hose connection method, a method which can dramatically increase the efficiency of abrasive recovery system, is derived.