Ring 내 납형의 위치에 따른 귀금속합금 주조체의 수축공 관찰
The examination of the pores of casting bodies depending on the position of wax pattern in the ring for precious alloys
박민주, 노학, 고대진, 정종현,
소속 상세정보
박민주 ( Park Min-Ju ) - (주)알파덴트 부설 기술연구소
노학 ( No Hak ) - (주)알파덴트 부설 기술연구소
고대진 ( Ko Dae-Jin ) - (주)알파덴트 부설 기술연구소
정종현 ( Jung Jong-Hyun ) - 광주보건대학교 치기공과
KMID : 0362120080300010009
Abstract
An investigation was carried out to examine the pores of casting bodies depending on the position of wax pattern in the ring for precious alloy by optical micrographs. From the result of optical micrographs, many pores were found in the Group C that wax pattern is placed in the center of the ring. However, any pores were scarcely found in the Group A, B, D and E that wax patterns are placed out of the center of thermal zone. In comparison with the pores of casting bodies of Group C, many pores were found at the cusp area rather than at the proximal surface. From these examination, it was concluded that wax pattern should be placed out of the center of thermal zone to prevent casting boies from occurring pores.
키워드
casting body;pore;position of wax pattern.
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