| Summary: | 碩士 === 國立中央大學 === 機械工程研究所 === 93 === Among the MIM processes, debinding is the most important and time-consuming step. Failing in this key process always leads to the overall failure of the MIM product. Therefore, it is the key point of the limiting the production rate of the MIM process.
To analyze the three dimension of wick debinding process, the influence of five different factors (porosity, compact height, debinding temperature, wick powder size, compact powder size) on the final debinding percentage is investigated. Results show that high porosity compact, small wick powder size, large compact powder size, and appropriate debinding temperature can increase the debinding percentage. By the dimensionless analysis of the parameters in debinding process, the capillary force is found to be the main driving force in the wick debinding. Furthermore, a mathematic of model is derived to simulate the idealized, two-dimensional debinding process, and the debinding percentage versus debinding time is calculated. The difference between simulation and experiment is compared and analyzed.
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