Powder Injection Molding of WC-TiC-Co Cemented Carbides
2003 年 50 巻 11 号 p. 899-902
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2003 年 50 巻 11 号 p. 899-902
An improved wax-based binder was developed for powder injection molding of WC-TiC-Co cemented carbides. The critical powder loading and the flow behavior of the feedstock were determined. I was found that the critical powder loading could achieve up to 62.5 Vol% and the feedstock exhibited a pseudo-plastic flow behavior. The injection molding, debinding and sintering processes were studied. The dimension deviation of the sintered samples could be controlled in the range of ±0.2% with the optimized processing parameters and the mechanical properties were equivalent to those of the same alloy made by conventional press-sintering process.
