一种新牌号Ni基高温合金的超纯净熔炼  

Super Refining of a New Type of Ni-Based Superalloy

作　　者：牛建平[1,2] 金涛[1] 孙晓峰[1] 于洋[1] 管恒荣[1] 胡壮麒[1] 

机构地区：[1]中国科学院金属研究所 [2]沈阳大学材料工程系,沈阳110044

出　　处：《材料导报》2001年第6期61-62,60,共3页Materials Reports

摘　　要：研究了在真空感应炉中采用CaO坩埚熔炼一种新牌号Ni基高温合金的效果。结果表明,采用CaO坩埚熔炼,当熔化期为25min 时,O、N 的脱除率分别为52%和5%;加入适量的 C 有利于 O、N 的去除,加入0.02%C 比没加 C 时 O、N 可分别多脱除36%和60%;高温高真空下单纯使用 CaO 坩埚而无碱性渣不能脱 S;加入0.5%Al 后经50min 精炼可脱除35%的 S。The effect of VIM refining a new type of Ni-based superalloy by using CaO crucible is studied. The results show that when the melting period is 25 minutes deoxidation and denitrogen rates are 52% and 5% re- spectively.Adding proper amount of carbon is of benefit to deoxidation and denitrogen.The deoxidation and denitro gen rates when adding 0.02% C are 36% and 60% higher than without C.There is no effect on desulpburization by only using CaO crucible under high temperature and vacuum.35% S can he desulphurized by adding 0.5% Al afterre fining for 50 minutes.

关 键 词：镍基高温合金 精炼 氧化钙坩埚 真空感应熔炼 脱氧 脱硫 脱氮 

分 类 号：TF133[冶金工程—冶金物理化学]