添加剂 CaF2 的影响,不同模子,模子预热温度,电磁激动人心,并且 CuCr 上的 alloying 元素被铝热剂减小在 CuCr 合金的准备期间分别地调查了电磁激动人心。结果显示合理反应物集中 CuO 的比率:Cr2O3:艾尔是 100:140:160;CaF2 能减少炉渣的团结点改进把效率与炉渣分开的金属;因为高冷却速度,水晶粒子在金属模子变得更薄;当在石墨模子扔时, CuCr 的扔的性质随预热的增加改进温度;紧缩的合金在 500 ° C 被准备;电磁的激动人心的罐头阻止树突水晶的生长进精制水晶粒子,以及一致 Cu 和 Cr 到改进 CuCr 性质:最佳的激动人心的时间是 7 min;当 alloying 元素 Ni 和公司被加到反应物时,元素 Cu 和 Cr 能均匀地散布,但是水晶粒子变得厚。
The influences of the additive CaF2, different molds, mold pre-heating temperature, electromagnetic stirring, and alloying elements on CuCr have been investigated respectively during the preparation of CuCr alloys by thermit-reduction electromagnetic stirring. The results indicate that the reasonable reactant mass ratio of CuO: Cr2O3:Al is 100:140:160; CaF2 can reduce the solidification point of slags to improve the metal separating efficiency from slags; the crystal particles become thinner because of the high cooling velocity in the metal mold; while casting in the graphite mold, the casting properties of CuCr improve with the increase of pre-heating temperature; the compact alloys are prepared at 500℃; electromagnetic stirring can prevent the growth of dendrite crystal into refine crystal particles, as well as homogenize Cu and Cr to improve the CuCr properties; the optimal stirring time is 7 min; when the alloying elements Ni and Co are added to the reactants, elements Cu and Cr can distribute evenly but the crystal particles become thick.