Manufacturing of Net-Shape Reaction-Bonded Ceramic Microparts by Low-Pressure Injection Molding

2009 ◽  
Vol 11 (5) ◽  
pp. 339-345 ◽  
Author(s):  
Nadja Schlechtriemen ◽  
Joachim R. Binder ◽  
Christina Hane ◽  
Marcus Müller ◽  
Hans-Joachim Ritzhaupt-Kleissl ◽  
...  
Keyword(s):  
Injection Molding ◽  
Low Pressure ◽  
Pressure Injection

Low-pressure injection molding processing of a 316-L stainless steel feedstock

2002 ◽  
Vol 52 (4-5) ◽  
pp. 360-365 ◽  
Author(s):  
M Rei ◽  
E.C Milke ◽  
R.M Gomes ◽  
L Schaeffer ◽  
J.P Souza
Keyword(s):  
Stainless Steel ◽  
Injection Molding ◽  
Low Pressure ◽  
Pressure Injection ◽  
316 L Stainless Steel

A New Dewaxing Method and its Effect on the Properties of Low-Pressure Injection Molded Ceramics

2007 ◽  
Vol 336-338 ◽  
pp. 1012-1016
Author(s):  
Yin Wu ◽  
Wen Jie Si ◽  
He Zhuo Miao
Keyword(s):  
Carbon Dioxide ◽  
Injection Molding ◽  
Bending Strength ◽  
Low Pressure ◽  
Supercritical Extraction ◽  
Paraffin Wax ◽  
Organic Additives ◽  
Extraction Condition ◽  
Pressure Injection ◽  
Injection Molded

A new dewaxing method for low-pressure injection molded ceramics is presented. Supercritical extraction with carbon dioxide was used to remove paraffin wax from the ceramic green parts. The composition of organic additives for low-pressure injection molding feedstock and the extraction condition for the green parts were investigated. Moreover, the properties of sintered ceramic samples dewaxed by supercritical carbon dioxide were compared with those by thermal dewaxing. The results show that the new binder system containing 50wt% paraffin wax, 35% bee wax and 15% stearic acid fulfills the requirements of both low-pressure injection molding feedstocks and supercritical dewaxing, where the feedstock has high fluidity, low viscosity and quick solidification. The efficient extraction condition for supercritical dewaxing from the green parts is at 30MPa pressure and 45°C. Under this condition, defect free ceramic green parts can be obtained. Dewaxing methods have significant influence on the properties of sintered parts. The mechanical properties of the sintered sample can be improved by supercritical dewaxing. With this method, the bending strength of sintered samples (σ = 331.6 MPa) is higher than that obtained by thermal treatment (σ = 312.3MPa). The sintered samples dewaxed by supercritical CO2 have shown the property of higher density and less distortion compared to the thermal dewaxing method. Moreover, with supercritical extraction the dewaxing time can be reduced to about one tenth of the time required by thermal dewaxing.

scholarly journals Preparation of Al2O3 ceramics by low pressure injection molding method.

1987 ◽  
Vol 34 (9) ◽  
pp. 378-382
Author(s):  
Kei Miyamoto ◽  
Yuzuru Takahashi ◽  
Suguru Inamura ◽  
Hiroki Miyamoto
Keyword(s):  
Injection Molding ◽  
Low Pressure ◽  
Molding Method ◽  
Pressure Injection

Novel Binder System Based on Paraffin-Wax for Low-Pressure Injection Molding of Metall–Ceramic Powder Mixtures

2001 ◽  
Vol 3 (12) ◽  
pp. 995 ◽  
Author(s):  
M. Leverkoehne ◽  
J. Coronel-Hernandez ◽  
R. Dirscherl ◽  
I. Gorlov ◽  
R. Janssen ◽  
...  
Keyword(s):  
Injection Molding ◽  
Ceramic Powder ◽  
Low Pressure ◽  
Paraffin Wax ◽  
Binder System ◽  
Powder Mixtures ◽  
Pressure Injection
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