高速钢双扫描雾化沉积工艺中喷嘴扫描频率研究  

Optimization of Scan Frequency in Twin-Scanning Atomizer Spray Forming Process of High Speed Steel

作　　者：穆松林[1] 袁华[1] 张勇[1] 李周[1] 

机构地区：[1]中航工业北京航空材料研究院

出　　处：《工具技术》2017年第5期29-32,共4页Tool Engineering

基　　金：国家973项目(2011CB606303)

摘　　要：通过计算仿真并结合高速钢试验研究了喷嘴轴线在沉积盘上扫描过的花样曲线,发现仅凭提高喷嘴扫描频率或沉积盘旋转速度的方法来获得规则的圆柱形沉积坯并不合适,研究认为,喷嘴扫描频率与沉积盘旋转速率的最小公倍数是决定沉积坯最终形状和沉积坯内温度分布的关键因素,只要两者的最小公倍数足够大,即使在很低的扫描频率和沉积盘旋转速率下也可以得到规则的圆柱形沉积坯。Computer simulation and experiment method of high speed steelare used in twin-scanning atomizer spray forming technology to record the scan plots of atomizers axes on collecting disk. The track plots showthat it＇ s inappropriate to enhance scan frequency or rotation speed to attain round billets or homogenized enthalpy distribution. The lease common multiple of scan frequency and rotation speed is considered as the most critical variable that influence profile and tempera- ture contour of finial billets. An ideal round billet can be deposited even the scan frequency and rotation speed are very low as long as the lease common multiple is high enough.

关 键 词：高速钢 喷射成形 双扫描喷嘴 数值模拟 

分 类 号：TG176[金属学及工艺—金属表面处理] TH162[金属学及工艺—金属学]