nodular cast iron

It can be seen from the table that the tensile strength and impact toughness of nodular cast iron show high

In order to minimize the content of harmful elements, the selected raw materials should be relatively pure, so high-quality pig

At different austenitizing temperatures and isothermal temperatures, the bending fatigue test results of ductile iron specimens at room temperature are

The tensile test shall be carried out in accordance with gb/t 228-2002 tensile test method for metallic materials at room

As cast crankshaft castings with nodular cast iron trademark of QT800-2 are selected as the samples. After testing, the nodularity

By controlling the size and distribution of graphite diameter and the spherical regularity of graphite, the correlation degree with the

The figure is the matrix structure diagram of the vibration lost foam casting ductile iron, in which figures (a) –

Fig. 1 (a) and Fig. 1 (b) show the hardness and strength changes of three groups of nodular cast iron

Figure 1 shows the graphite morphology of the nodular cast iron by vibration lost foam casting, in which figure 1

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)