STD ADAPTER-1

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Porosity was found around the hot spots on the cross-sectioned small excavator bucket tooth workpiece, and porosity was also observed on the nearby walls of the core cavity.

The porosity in squeeze-cast castings can be classified into separated porosity, intrusive porosity, and reaction porosity. During the formation of shrinkage cavities and porosity in castings, gas separation often accompanies the process. Porosity, shrinkage cavities, and porosity can be considered as coexisting. If the gas content in the alloy is too high or if too much gas is introduced during the filling process of liquid metal, it will exacerbate the formation of the aforementioned shrinkage cavities or porosity. Through the analysis of the cross-sectioned bucket tooth, it can be seen that the porosity distribution is random, and the holes are large, mostly spherical and globular, indicating that this porosity basically belongs to intrusive porosity.