Scientific

Fig. 1 shows the microstructure SEM of three groups of ductile iron samples. It can be seen from the figure […]

The figure below shows the graphite morphology at different wall thicknesses of lost foam casting ductile iron. Figures (a) –

Under normal circumstances, the number of graphite balls in nodular cast iron will affect the matrix structure and stress distribution

As the nodular cast iron treated at 1560 ° C has been obviously white cast, it is not satisfied with

1. Test materials and preparation The composition of three groups of nodular cast iron samples is self-designed, and the specific

The mechanical properties of nodular cast iron mainly depend on the matrix structure of nodular cast iron. At the same

After normalizing, the tensile strength and elongation of nodular cast iron are improved from 930 ℃. In nodular cast iron,

The figure shows the variation curve between Brinell hardness and amplitude of nodular cast iron. It can be seen from

Figure 1 shows the matrix structure of nodular cast iron prepared under different amplitudes. Among them, figure 1 (a) and

The figure below shows the graphite morphology of nodular cast iron prepared under different amplitude conditions. Figures (a) – (d)

The figure shows the matrix structure of nodular cast iron prepared with different amounts of nodulizer. Among them, figures (a)

1.Effect on hardness Figure 1 shows the change curve of Brinell hardness of nodular cast iron with vibration frequency. It

Fig. 1 is the matrix structure diagram of ductile iron in lost foam casting under different vibration frequencies with amplitude

The vibration frequency is one of the key factors that affect the microstructure and properties of castings produced by the

In the lost foam casting process of nodular cast iron, in addition to the treatment temperature of molten iron and

The tensile samples of room temperature nodular cast iron as cast and treated at different normalizing temperatures were tested at

The figure shows the graphite morphology of cast iron alloy prepared with different addition amount of spheroidizing agent. Among them,

The figure shows the matrix structure of as cast ductile iron. It can be seen from figure a that the