The study on Heat Transfer and Solidification of Uniform Droplet formed from Jet Breakup
An experimental device capable of producing uniform metal droplet stream and electric charging and deflecting has been developed.Uniform spherical powder of 180μm in diameter was obtained after cooling and solidification.Numerical models of heat transfer and solidification of droplets were established.The thermal history including solid fraction of droplets in uniform droplet spray process were calculated.Under the common processing conditions,the cooling rate of a droplet of 180μm diameter is of the order of 103-104℃/s.To obtain homogeneous and dense preforms,the substrate should be positioned at a distance of l.l-l.3m from the nozzle.
uniform droplet stream heat transfer solidification
Sheng-Dong GAO Yang WANG Hong-Bo WANG Yan WU
School of Mechatronics Engineering, Harbin Institute of Technology, Harbin 150001, China Information and Computer Collage, Northeast Forestry University, Harbin 150040, China
国际会议
台湾
英文
519-523
2011-12-11（万方平台首次上网日期，不代表论文的发表时间）