The removal of binder from green parts is complicated and time consuming. In order to reduce the defects and total time of debinding in advance, wick debinding may be employed by finer powders. A simple experiment is conducted and Taguchi's method is used in the present investigation. Direct observation of melting binder distribution is made by flow visualisation and the theoretical model of debinding time is verified again. The results show that under the optimum setting (A1B2C1D1), the confirmation experiment yielded an improvement about 15 dB and 10 dB in fingering defect and the residual of binder, respectively.
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References
1.
ScheideggerA. E.: ‘The physics of flow through porous media’, 3rd edn; 1972, Toronto, University of Toronto Press.
2.
DullienF. A. L.: ‘Porous media — fluid transport and pore structure’; 1979, New York, NY, Academic Press.
3.
PattersonB. R. and ARIAC. S.: JOM, 1989, 22-24.
4.
LograssoB. K. and GERMANR. M.: Powder Metall. Int., 1990, 22, (1), 17–22.
5.
VetterR., SANDERM. J., MAJEWSK-GLABUSI., LIN Z. ZHUANG, and J. USZCZYK: Int. J. Powder Metall., 1994, 30, (1), 115–124.
6.
VetterR., VAN DEN BRANDHORNINGEW. R., VERVOORTP. J., MAJEWSKA-GLABUSI., ZHUANGL. Z., and DUSZCZYKJ.: Powder Metall., 1994, 37, (4), 265–271.
7.
GermanR. M.: Int. J. Powder Metall., 1987, 23, (4), 237–245.
8.
ChenC. C. and HOURNGL. W.: Powder Metall., 1999, 42, (4), 313–319.
9.
PhadkeM. S.: ‘Quality engineering using robust design, AT&T bell laboratories’; 1989, NJ, Prentice-Hall, Inc.
10.
RossP.: ‘Taguchi techniques for quality engineering’; 1988, New York, NY, McGraw-Hill Inc.
11.
TaguchiG.: ‘Introduction to quality engineering’; 1986, White Plains, NY, Kraus International Publications.
12.
FoxR. T. and LEED.: Int. J. Powder Metall., 1990, 26, (3), 233–243.
13.
ZuY. S. and LINS. T.: J. Mater. Process. Technol., 1997, 71, 337–342.
