nodular cast iron

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

The as cast and normalized ductile iron samples were observed with Kearns vh-5000 ultra depth of field optical metallographic microscope.

The test sample bar is taken from the cylindrical nodular cast iron test bar melted in the medium frequency induction

According to the diameter, wall thickness and inspection requirements of the main shaft hole of the wheel hub, the pouring

The nodular iron castings of wind power wheel hub belong to thick and large section castings, especially the thickness of

In order to explore the effect of ultrasonic treatment time on the microstructure and properties of ductile iron, a group