ductile iron casting

Nodular cast iron (ductile iron for short) is the 50th century A kind of high strength cast iron developed in

The design of feeding system is the key content of this paper. We discussed the main factors that affect the

The surface of high nickel ductile iron samples during corrosion process was observed. The results are similar to that of

By observing the surface of the sample during the corrosion process, no obvious bubbles were found on the surface of

The unit area gain of high nickel ductile iron at 900 C for different working hours is recorded in Figure

The prepared sample is heated in a resistance furnace and weighed with an electronic balance.Figure 1 shows the measurement results

In order to understand the oxidation conditions at the cracks, elemental analyses are carried out on the areas of Fig.

The sample size for thermal fatigue test is 15 mm x 10 mm x 10 mm.To eliminate the influence of

The temperature range of the thermal cycle (T) is equal to the upper limit temperature of the thermal cycle (T)

The increase in length of high silicon molybdenum ductile iron when it is cooled to room temperature after holding for

The relationship between length increment and holding time of high nickel ductile iron at different operating temperatures is shown in

Automotive exhaust is mainly composed of CO, CH and NOX. It directly discharges into the air not only pollutes the

The red oxide layer of high nickel ductile iron covers the surface of the sample while holding for 80 hours

Fig. 1 shows the microstructure of high silicon molybdenum ductile iron after different thermal cycles at the upper temperature of

With the continuous progress of society, atmospheric warming and environmental pollution have attracted more and more attention around the world.

Alloy cast iron is an iron-carbon cast alloy with some other elements added. It is often made by melting some

The as-cast microstructure of high nickel ductile iron observed under a microscope is shown in the figure.The graphite spheroidization of

1.Analysis of the reasons for the failure of the original process 1.1 cause analysis of shrinkage and porosity The riser

The figure shows the original as-cast structure of high silicon-molybdenum ductile iron. From Figure a, it can be seen that