低氧氮含量K417G镍基高温合金生产工艺  

Manufacturing Technology for Low O/N Content Ni-based Superalloy K417G

作　　者：张万福[1] 叶超 李强[1] 李军[1] 王德洪[1] 罗俊义[1] ZHANG Wan-fu;YE Chao;LI Qiang;LI Jun;WANG De-hong;LUO Jun-yi(Advanced Technology&Materials Co.,Ltd.,Beijing 101318,China)

机构地区：[1]安泰科技股份有限公司,北京101318

出　　处：《真空》2023年第6期66-70,共5页Vacuum

摘　　要：介绍了低氧氮含量K417G镍基高温合金的生产工艺,着重讨论了合金制备不同阶段的脱气处理方法,并阐述了不同工艺环节避免气体带入的措施。在合金熔炼前通过预脱气尽可能去除表面吸附气体;在化料期将化料功率设定为300~750kW,并将单次加料量控制在500kg以下,使氧氮含量分别降至0.0018%和0.0014%;在精炼期控制合金熔液温度在1582℃,并利用碳脱氧反应精炼80min,使氧氮含量分别降低到0.0006%和0.0002%;精炼结束后加入活泼元素作为强脱氧剂,并维持20min以上,进一步将氧含量降低到0.0003%,顺利完成了低氧氮含量K417G镍基高温合金的生产。The manufacturing process of low O/N content K417G Ni-based superalloy is introduced.The degassing treatment methods at different stages of alloy preparation are emphatically discussed,and the measures to avoid gas introduction in different process links are described.The gas of surface adsorption on material is removed as much as possible before melting.During melting,the power is set from 300kW to 750kW,and the single weight of charging is limited to 500kg to reduce the content of O and N to 0.0018%and 0.0014%respectively.During the refining period,the temperature of molten bath is kept at 1582℃,and the reaction of deoxidization by carbon is used to reduce the content of O and N to 0.0006%and 0.0002%respectively after refining for 80min.The rare earth elements are added to molten bath as deoxidizer after refining to reduce the content of O to 0.0003%.At last,the production of low O/N content Ni-based superalloy is producted successfully.

关 键 词：高温合金 K417G 真空感应熔炼 脱气处理 

分 类 号：TF133[冶金工程—冶金物理化学]