Lotz J, Müller W D, Altrichter B, Lange K P
Abteilung für experimentelle Stomatologie und Biomaterialforschung, Humboldt-Universität, Berlin, DDR.
Zahn Mund Kieferheilkd Zentralbl. 1990;78(4):307-16.
Nonprecious alloys (NEM) applied in dental practice often show widely differing material properties after casting. This is caused by subjective and objective differences in manufacturing of these alloys with a given technology as well as by varying composition and structure of the alloys within and in between different lots. For homogeneous composition of crude specimens technologically caused variance of casting condition itself leads to considerable differentiation of casting results. If the original state of crude alloy forms is very different then there will be a levelling out and/or increase of scattering of material parameters after casting. Optimized computed-controlled casting technology in combination with defined muffle ring size could result in reproducible casting results.
牙科实践中应用的非贵金属合金（NEM）铸造后往往表现出差异很大的材料性能。这是由采用特定技术制造这些合金时的主观和客观差异，以及不同批次内和不同批次间合金的成分和结构变化所导致的。对于粗试样的均匀成分，铸造条件本身在技术上引起的变化会导致铸造结果出现相当大的差异。如果粗合金形态的原始状态差异很大，那么铸造后材料参数的离散度将会趋于平稳和/或增加。优化的计算机控制铸造技术与确定的马弗炉环尺寸相结合，可能会产生可重复的铸造结果。
