nodular cast iron

Sand cores are used to form the inner cavity, the hole and the parts that cannot be realized by the

The casting process plan mainly includes the selection of molding method, pouring position and parting surface. The determination of casting

Parting surface refers to the contact surface of each casting mold which is divided into several segments. In practical production,

Through macroscopic observation and analysis of graphite floating, under the same wall thickness and pouring conditions of inlet cylinder, the

In theory, the whole process can be summarized into three important stages: primary shrinkage (liquid shrinkage), volumetric expansion (graphitization expansion)

The distribution of physical hot spots is special and the solidification process is complex. The distribution of hot spots directly

During ut inspection, the main defects exceeding the standard were shrinkage cavity and porosity defect. In the subsequent finishing process,

The molten iron enters the mold filling process through the gating system, which can be seen as a liquid with

The inlet cylinder is one of the typical high difficulty ductile iron castings. Its solidification characteristics are closely related to

The inlet cylinder casting is composed of flange, brace, volute and other parts of cross connection. In the study, the