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Shrinkage porosity and shrinkage cavity in steel castings

During solidification, the steel casting will produce liquid shrinkage and solidification shrinkage. When the feeding system cannot provide sufficient liquid steel to supplement and shrink the final solidification area of the steel casting, the steel casting will have shrinkage defects with irregular shape and rough surface, and dendrite endings...

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Prevention of shrinkage porosity of nodular iron castings

1. Chemical composition control The chemical composition of nodular cast iron for wind turbine shall be strictly controlled, especially C, Si, Mg, s, P and rare earth elements. The silicon content shall be appropriately reduced to ensure the requirements of low temperature impact energy. For main frame, wheel hub...

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