Abstract
The ability to control the sprue solidification time by using modulated pressure was investigated over a wide range of mould temperatures using a silicon nitride suspension. The mould temperature needed for infinite sprue solidification time was reduced from 158 to 75° C by the application of a pressure of 132 MPa modulated at 0.5 Hz. Under similar moulding conditions, macroscopic moulding defects in the hub of a solid rotor were avoided. Such defects were present in all static pressure mouldings. The thermal power input to the sprue resulting from oscillatory flow was estimated.
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References
M. J. Edirisinghe andJ. R. G. Evans,Int. J. High Tech. Ceram. 2 (1986) 249.
Idem, J. Mater. Sci. 22 (1987) 2267.
G. Menges, D. Koenig, R. Luettgens, R. Sarholz andE. Schuerman,Plastverabeiter 31 (1980) 185.
P. S. Allan andM. J. Bevis,Plast. and Rubber. Proc. and Appl. 3 (1983) 85.
Idem, ibid. 3 (1983) 331.
Idem, Plas. Rubber. Int. 9 (1984) 32.
P. S. Allan, M. J. Bevis, M. J. Edirisinghe, J. R. G. Evans andP. R. Hornsby,J. Mater. Sci. Lett. 6 (1987) 165.
J. G. Zhang, M. J. Edirisinghe andJ. R. G. Evans,Int. J. High Tech. Ceram. in press.
M. J. Edirisinghe andJ. R. G. Evans,Materials and Design VIII (1987) 284.
M. J. Edirisinghe, J. G. Zhang andJ. R. G. Evans,ibid. IX (1988) 95.
M. J. Edirisinghe andJ. R. G. Evans,Brit. Ceram. Trans. J. 86 (1987) 18.
Idem, J. Mater. Sci. 22 (1987) 269.
Idem, Industrial Ceramics 7 (1987) 100.
Idem, Proc. Brit. Ceram. Soc. 38 (1986) 67.
M. J. Edirisinghe,J. Mater. Sci. Lett. in press.
T. B. Shaffer, “High Temperature Materials No. 1” (Plenum Press, New York, 1964) p. 285.
Encyclopedia of Polymer Science and Technology, edited by H. F. Mark and N. G. Gaylord,13 (1970) 780.
G. V. Samsonov, “High Temperature Materials No. 2” (Plenum Press, New York, 1964) p. 127.
Z. Hashin andS. Shtrikman,J. Appl. Phys. 33 (1962) 3125.
J. P. Holman, “Heat Transfer” (McGraw Hill, New York, 1963) p. 56.
J. G. Zhang, M. J. Edirisinghe andJ. R. G. Evans,Ind. Ceram. in press.
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On leave from Department of Materials Engineering, Nanjing Institute of Technology, China.
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Zhang, J.G., Edirisinghe, M.J. & Evans, J.R.G. The control of sprue solidification time in ceramic injection moulding. J Mater Sci 24, 840–848 (1989). https://doi.org/10.1007/BF01148766
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DOI: https://doi.org/10.1007/BF01148766