1、Top-pouring Bottom-pouring Production of steel ingots (排除熔渣、终脱氧)The advantage of “hot top保温冒口”Shaft furnace(铸铁用冲天炉)(铸铁用冲天炉)Induction furnace Arc-furnace(炼钢)(炼钢) (2)造型工艺 A.分型面 B.模具设计 C.浇注系统设计(浇冒口) D.造型(讲解图) E.凝固顺序(快冷) 如:飞如:飞机叶片(高温合金),机叶片(高温合金), 1. Wax Injection 2. Assembly3. Shell Building4. Dewax5.
2、Conventional Casting6.Knockout7. Cut Off8.Finished Castingsa. a.提拉法b. b.下降法c. c.区熔法提拉法下降法区熔法Solidliquid interface of the directionally solidified Ni50Mn25Ga25 alloy under GL=500 K/cm and V = 10 mm/h with different zone-melting length: (a) l = 6 mm; (b) l = 11mm; (c) l = 19mmhhSolid/Liquid interface morphology of sample A36(a) and sample A18(b),GL1200K/cm,V=10mm/h hSolid/Liquid interface morphology of single crystal B1,GL1500K/cm,V=10mm/h 单辊急冷技术雾化制粉(纳米)技术深过冷快速凝固技术,是在熔体中消除非均匀形核的异质核心(多次循环加热)以及容器壁(采用磁悬浮技术)的影响,形成均匀形核,因此增大过冷度,过冷度达到0.30.4Tm (普通凝固过冷度为0.02Tm左右)过冷度越大,生长速度越大。实现快速凝固。