高温合金叶片单晶凝固技术的新发展
马德新1,2(
)
)
DEVELOPMENT OF SINGLE CRYSTAL SOLIDIFICA- TION TECHNOLOGY FOR PRODUCTION OF SUPERALLOY TURBINE BLADES
MA,Dexin,1,2()
)
图11. 薄壳降升法制取单晶叶片示意图
Fig.11. Schematic of the dipping and heaving (D&H) process using thin shell (Vdip—dipping velocity, Vpull—pulling velocity)
(a) dipping the shell mold into the melt bath
(b) mold filling
(c) pulling up the mold to perform a downward solidification
