Satoh Y, Miyata M, Ono F, Ujiie Y, Toyoma H, Ohki K, Satoh N, Kimura K, Shiina Y, Maeda K
Department of Partial Denture Prosthodontics, Nihon University School of Dentistry, Tokyo, Japan.
J Nihon Univ Sch Dent. 1990 Mar;32(1):27-34. doi: 10.2334/josnusd1959.32.27.
Co-Cr alloy is used more frequently than Ni-Cr alloy as a non-precious alloy for cast plates in Japan. However, since the melting point of Co-Cr alloy is very high, about 1300 degrees C, and since it oxidizes easily, a vacuum-pressure casting machine capable of melting this alloy in a reducing atmosphere has recently been developed. Using this vacuum-pressure casting machine, the authors studied the effects on the castability of Co-Cr alloy due to the form of sprue attachment to the wax pattern. The results clarified that in the vacuum-pressure casting method, the form of sprue attachment to the wax pattern has a significant effect (p less than 0.01) on the castability of Co-Cr alloy.
在日本，钴铬合金作为铸造板的非贵金属合金比镍铬合金使用得更频繁。然而，由于钴铬合金的熔点非常高，约为1300摄氏度，并且容易氧化，最近开发了一种能够在还原气氛中熔化这种合金的真空压力铸造机。作者使用这种真空压力铸造机，研究了蜡型浇道附着形式对钴铬合金铸造性能的影响。结果表明，在真空压力铸造法中，蜡型浇道附着形式对钴铬合金的铸造性能有显著影响（p小于0.01）。
