Design process of cast iron parts. When designing, in addition to determining the geometric shape and size of iron castings based on working conditions and metal material properties, the rationality of the design must also be considered from the perspective of casting alloys and casting process characteristics, namely obvious size effects and solidification, shrinkage, stress and other issues, in order to avoid or reduce the occurrence of defects such as component segregation, deformation, and cracking in iron castings.

The quality of raw materials used for casting. The substandard quality of metal furnace materials, refractory materials, fuels, fluxes, detergents, casting sand, molding sand binders, coatings, and other materials can cause defects such as pores, pinholes, slag inclusions, and sand sticking in cast iron castings, affecting the appearance and internal quality of cast iron castings. In severe cases, it can lead to the scrapping of cast iron castings. The fourth is process operation, which requires the development of reasonable process operation procedures to improve the technical level of workers and ensure the correct implementation of process procedures.

In manufacturing production, it is necessary to control and inspect the quality of castings. Firstly, it is necessary to establish process rules and technical conditions for the control and inspection of each specific product, from raw materials and auxiliary materials. Strictly control and inspect each process in accordance with the process rules and technical conditions. Finally, conduct quality inspection on the finished castings. Reasonable testing methods and suitable testing personnel should be equipped. Generally, for the appearance quality of professional cast iron castings, a comparison sample can be used to determine the surface roughness of the casting; Tiny cracks on the surface can be inspected using staining and magnetic particle methods.