| Title |
The Modelling of Rod Growth during Spray Forming ( Steady State Model and Time of Reaching Steady State ) |
| Authors |
이희춘(Hui Choon Lee); 나형용(Hyung Yong Ra); 오규환(Kyu Hwan Oh); 이호인(Ho In Lee) |
| Abstract |
A steady state model on the shape of rod during spray forming has been developed. Steady shape of the rod has been calculated numerically under the assumption of parallel spray density distribution and normal distribution. Time for reaching steady shape of rod during spray forming has been calculated numerically. The calculated steady shape of rod agrees well with the result of transient model, reported previously. The radius of the rod is proportional to square root of melt flow rate, and inverse to square root of substrate withdrawal velocity. Steady shape of the rod can be obtained at following condition : V$lt;a·cosφ, where V, a and φ is substrate withdrawal velocity, spray density constant and spray angle respectively. |