Critical Process Parameters in MIM Sintering Furnaces
The accuracy of dimensional tolerances of sintered MIM parts is limited, especially in the case of larger geometries. One reason is green density fluctuations introduced during high-pressure injection molding lead to inhomogeneous shrinkage behavior at elevated sintering temperatures. Another reason is large temperature gradients in the furnace hot zone cause geometrical distortions, even in part areas with rather homogenous density distributions.
By examining different factors for determining unwanted temperature gradients in MIM vacuum furnaces, we are able to evaluate the process parameters and present possible improvements by utilizing tight control and accurate design of heating elements and hot zones, as well as advanced process gas management systems, for commercial use in large series production environments.
Find out more about critical process parameters for MIM Sintering heat treatment furnaces, testing results and more by visiting the link below.