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Vol.33, No.3, 406 ~ 414, 1995

Title

A Study on Plate Forming Model in Spray Forming Process

석현광Hyun Kwang Seok, 여동훈Dong Hoon Yeo, 오규환Kyu Hwan Oh, 나형용Hyung Young Ra, 이호인Ho In Lee

Abstract

Using numberical method, the work condition to make a plate preform in Spray Deposition Method has been optimized in this study. In this calculation we have used the assumptions that spray density is represented by Gaussian funtion and surface grows to normal direction and droplet flys from orifice to calculation points on the preform surface. We proposed two methods to make plate preforms by spray forming process, In each method the nozzle control function is derived as ; Method I ω(θ)=G·v·sinθ_(max)·√b·cos²(θ) Method II ω(θ)=G·v·sinρ_(max)·√b·1/cos(ρ) In these equation v is the substrate velocity, b is spray density constant, θ is the angle between spray axis and z-axis, and ρ is the angle between spray axis and y-axis. The simulation suggests that the constant G must be larger than 3 to make plate without surface modulation.

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