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10公斤以上的大型非铁磁性铬镍合金铸锭在1000℃温度以下,如果有变形发生,裂纹也同时产生。而变形在冷却过程中继续发生,其裂纹也继续产生。铸锭表面存在着温度差是变形和裂纹的主要原因。试验了在感应炉内用惰性气体保护下熔化非铁磁性铬镍合金,然后用陶瓷型浇注大型铸锭。浇注后在1300～1000℃范围内保温30分钟以上,使铸锭表面与中心温度差很小;在
Larger non-ferromagnetic chromium-nickel alloy ingots of 10 kg or more at temperatures below 1000 ° C will crack simultaneously if deformation occurs. The deformation continues to occur in the cooling process, the cracks also continue to produce. There is a temperature difference on ingot surface which is the main reason for deformation and cracking. It was tested that a non-ferromagnetic chromium-nickel alloy was melted in an induction furnace under the protection of an inert gas, and then a large cast ingot of ceramic type was poured. After pouring in the range of 1300 ~ 1000 ℃ for more than 30 minutes, the ingot surface and the center temperature difference is very small; in