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Semi-solid gravity sand casting using gas induced semi-solid process

中国有色金属学会会刊：英文版 2010年第S3期20卷 981-987页

作者： t.chucheep R.BURAPA S.JANUDOM S.WISUtMEtHANGOON J.WANNASIN Department of Mining and Materials Engineering Faculty of EngineeringPrince of Songkla UniversityHat YaiSongkhla90112Thailand Department of Industrial Engineering Faculty of EngineeringRajamangala University of Technology SrivijayaSongkhla9000 0Thailand Department of Mechanical Engineering Faculty of EngineeringPrince of Songkla UniversityHat YaiSongkhla90112Thailand

the semi-solid metal forming using high pressures has been applied for several *** contrast,low pressure casting,such as gravity sand casting,has not been widely studied even though it may help reduce porosity defects and offer a better casting yield.A semi-solid gravity sand casting process using the Gas Induced Semi-Solid process was *** results show that the process can produce complete parts with no observable *** ultimate tensile strength and elongation data of semi-solid cast samples are higher than those of the liquid cast *** addition,the semi-solid sand casting process gives a better casting *** can be concluded that the semi-solid sand casting of an aluminum alloy using the GISS process is a feasible process.

关键词： gravity sand casting semi-solid sand cast Al7Si0.3MgFe gas induced semi-solid

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Effects of primary phase morphology on mechanical properties of Al-Si-Mg-Fe alloy in semi-solid slurry casting process

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中国有色金属学会会刊：英文版 2010年第S3期20卷 857-861页

作者： R.BURAPA S.JANUDOM t.chucheep R.CANYOOK J.WANNASIN Department of Industrial Engineering Faculty of EngineeringRajamangala University of Technology Srivijaya Department of Mining and Materials Engineering Faculty of EngineeringPrince of Songkla University

the gas induced semi-solid(GISS) process was developed to create semi-solid slurry with fine and uniform globular *** combination of local rapid heat extraction and vigorous agitation by the injection of fine inert gas bubbles through a graphite diffuser in molten metal held at a temperature above its liquidus temperature changes the morphology of primary α(Al) from coarse dendritic to rosette-like and finally to fine *** GISS process produced semi-solid slurry at low solid fractions and then formed the slurry by a squeeze casting process to produce casting *** effects of primary phase morphology on the mechanical properties of Al-Si-Mg-Fe alloy were *** results show that the ultimate tensile strength and elongation are affected by the shape factor and particle size of the primary α(Al).

关键词： gas induced semi-solid(GISS) microstructure mechanical properties semi-solid slurry casting rheocasting

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Research and development of gas induced semi-solid process for industrial applications

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中国有色金属学会会刊：英文版 2010年第S3期20卷 1010-1015页

作者： J.WANNASIN S.JANUDOM t.RAttANOCHAIKUL R.CANYOOK R.BURAPA t.chucheep S.tHANABUMRUNGKUL Department of Mining and Materials Engineering Faculty of EngineeringPrince of Songkla University Department of Industrial Engineering Faculty of EngineeringRajamangala University of Technology Srivijaya

Several rheocasting processes are developed or applied worldwide in the metal forming *** of the new rheocasting processes is the gas induced semi-solid(GISS) *** GISS process utilizes the principle of rapid heat extraction and vigorous local extraction using the injection of fine gas bubbles through a graphite *** forming processes such as die casting,squeeze casting,gravity casting,and rheo-extrusion of the semi-solid slurries prepared by the GISS process have also been *** GISS process is capable of processing various alloys including cast aluminum alloys,die casting aluminum alloys,wrought aluminum alloys,and zinc *** GISS process is currently developed to be used commercially in the industry with the focus on forming semi-solid slurries containing low fractions solid(to *** research and development activities of the GISS process were discussed and the status of the industrial developments of this process was reported.

关键词： gas induced semi-solid rheocasting die casting formation mechanism industrial applications

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Forward-viewing radial-array echoendoscope for staging of colon cancer beyond the rectum

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World Journal of Gastroenterology 2014年第10期20卷 2681-2687页

作者： Pradermchai Kongkam Sittikorn Linlawan Satimai Aniwan Narisorn Lakananurak Suparat Khemnark chucheep Sahakitrungruang Jirawat Pattanaarun Supakij Khomvilai Naruemon Wisedopas Wiriyaporn Ridtitid Manoop S Bhutani Pinit Kullavanijaya Rungsun Rerknimitr Gastrointestinal Endoscopy Excellent Center Department of Medicine King Chulalongkorn Memorial Hospital Chulalongkorn University Bangkok 10330 Thailand Department of Surgery King Chulalongkorn Memorial Hospital Chulalongkorn University Bangkok 10330Thailand Department of Pathology King Chulalongkorn Memorial Hospital Chulalongkorn UniversityBangkok 10330 Thailand Department of Gastroenterology Hepatology and Nutrition-Unit UT MD Anderson Cancer Center Houston TX 77030 United States

AIM: to evaluate feasibility of the novel forward-viewing radial-array echoendoscope for staging of colon cancer beyond rectum as the first series.

关键词： Colon cancer Neoplasm Colon Endoscopic ultrasound Neoadjuvan therapy Staging Forward-viewing Colonoscopy

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