Three factors affecting the feed flow of MIM stainless steel!

Firstly, the loading capacity of metal powder during the injection molding process. Powder load refers to the percentage of metal powder volume to the total feed volume. The larger the loading amount of metal powder, the higher the proportion of metal powder in the feed, resulting in an increase in feed viscosity and a corresponding decrease in rheological properties. When the loading amount of metal powder changes, the proportion of binder increases correspondingly, the viscosity of the feed decreases, and the flowability improves. Guangdong Dahong New Materials reminds everyone that the more adhesive, the better, and also considers the impact of adhesive dosage on other subsequent processes.

Secondly, the shear rate during the metal powder injection molding process. In the process of metal powder injection molding, the stainless steel feed flows at a high shear rate, so the feed is heated by high shear force, and the viscosity decreases after heating, resulting in strong fluidity; On the contrary, when the feed flows at a low shear rate, the heat at lower shear forces is slower, the viscosity does not significantly decrease, and the flowability is correspondingly poorer.

Thirdly, the temperature during the metal powder injection molding process. mainly refers to the injection temperature of metal powder injection molding and the temperature after entering the mold cavity. The effect of temperature on stainless steel feeders is a thermal activation process. Temperature affects the flowability of the feeder by affecting its viscosity. When the temperature rises, the viscosity of the feeder decreases and the corresponding fluidity increases. When the temperature decreases, the viscosity of the feed increases and the flowability becomes relatively poor.