Summary
International Technical Conference on Circuits/Systems, Computers and Communications
2008
Session Number:P1
Session:
Number:P1-71
Optimization Surface Roughness Parameters for Oak Color Sprayings
Patcharee Chantanabubpha,
pp.-
Publication Date:2008/7/7
Online ISSN:2188-5079
Summary:
This paper presents the optimization condition on oak color spraying. Factors impacted on spraying are controllable and uncontrollable. Controllable factors are a) color viscosity, b) distant between part and nozzle c) nozzle speed, d) Feed rate and e) nozzle pressure. Uncontrollable is temperature (T). The first step of this study finds out the controllable factors, which is the internal factors by using experimental design method. The design of experiment technique (DOE) [3] is used to reduce numbers of experimental, base on standard orthogonal array- table, 5 main factors 2 levels; L16 (215). The experimentation is focus on numbers of defect part. The parameters a) and e) are screened from 5 factors by variant of analysis. It is found that the viscosity and nozzle pressure are significant impact to defect part at 95% confidence (α = 0.05). The second step is to study relationship between significant internal factors and temperature, finding out the optimal condition. The results was received from running software are the optimal-condition at viscosity, temperature and nozzle pressure are 10.22 poise 4 bars and 41 degree Celsius respectively. The rejected part is minor 0.0947 and desirability is 1. It means that a number of rejected parts are zero and it is a best case. The adjusted optimize results for the practical work is viscosity; temperature and pressure are 10.5 poise 4 bars and 41 degree Celsius. The rework parts 0.1944 pieces and 0.88 desirability. It can be accepted and this can be practically adjusted. Keyword: DOE (design of experiment), Taguchi Method