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KMID : 0362120140360030141
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Journal of Technologic Dentistry
2014 Volume.36 No. 3 p.141 ~ p.147
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Manufactures of dental casting Co-Cr-Mo based alloys in addition to Sn, Cu and analysis of infrared thermal image for melting process of its alloys
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Kang Hoo-Won
Park Young-Sik
Hwang In
Lee Chang-Ho
Heo Yong
Won Yong-Gwan
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Abstract
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Purpose: Dental casting #GrⅠ(Co-25Cr-5Mo-3Sn-1Mn-1Si), #GrⅡ(Co-25Cr-5Mo-5Cu-1Mn -1Si) and #GrⅢ (Co-25Cr-5Mo-3Sn-5Cu-1Mn-1Si) master alloys of granule type were manufactured the same as manufacturing processes for dental casting Ni-Cr and Co-Cr-Mo based alloys of ingot type. These alloys were analyzed melting processes with heating time of high frequency induction centrifugal casting machine using infrared thermal image analyzer.
Methods: These alloys were manufactured such as; alloy design, the first master alloy manufatured using vacuum arc casting machine, melting metal setting in crucible, melting in VIM, pouring in the mold of bar type, cutting the gate and runner bar and polishing. These alloys were put about 30g/charge in the ceramic crucible of high frequency induction centrifugal casting machine and heat, Infrared thermal image analyzer indicated alloys in the crucible were set and operated.
Results: The melting temperatures of these alloys measuring infrared thermal image analyzer were decreased in comparison with remaniumⓡ GM 800+, vera PDITM, Biosilⓡ f, WISILⓡ M typeⅤ, Ticonium 2000 alloys of ingot type and vera PDSTM(Aabadent, USA), Regalloy alloys of shot type.
Conclusion: Co-Cr-Mo based alloy in addition to Sn(#GrⅠ alloy) were decreased the melting temperature with heating time of high frequency induction centrifugal casting machine using infrared thermal image analyzer.
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KEYWORD
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Co-Cr-Mo-Sn-Mn-Si alloy, Co-Cr-Mo-Cu-Mn-Si alloy, Co-Cr-Mo-Sn-Cu-Mn-Si alloy, melting process, granule type, infrared thermal image analyzer, high frequency induction centrifugal casting machine
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