gray cast iron

The thermal fatigue resistance of materials is closely related to the tensile strength. Figure 1 shows the fracture morphology of

When studying the effect of carbon content on the thermal fatigue performance of laser bionic gray cast iron, the graphite

Generally speaking, the eutectoid transformation starts from the formation of cementite sheet at the austenite grain boundary. The formation and

Change trend of white mouth width of triangular test piece: 5.5mm; 4.6mm ； 3.8mm； All white mouth; All white mouth

Based on the study of gray cast iron brake drum, through the study of various brake drums, it is found

According to the outer contour, the eutectic group of gray cast iron can be divided into three types: spherical eutectic

Of low carbon equivalent gray cast iron modified by rare earth α- The lattice constant of Fe is measured by

It can be seen from the measurement results of free linear shrinkage and its corresponding relationship curve in the table

Figure 1 shows the microstructure changes of gray cast iron matrix and unit without thermal fatigue and 300 thermal cycles.

1. Base metal structure of different graphite types Figure 1 shows the graphite type of no.a-no.e, and its chemical composition

The hardness of low carbon equivalent gray cast iron treated with rare earth is also compared with HT250 inoculated with

When studying the performance of gray cast iron brake drum, thermal fatigue makes the material crack, but the brake drum

By comparing the matrix structure of low carbon equivalent gray cast iron treated with different rare earth additions, it can

In the process of gray cast iron cutting experiment, the measurement cycle is very short, the cutting length of the

1.Sample preparation The tensile strength of low carbon equivalent gray cast iron was measured by hydraulic universal tensile testing machine.

Comparing the graphite morphology of low carbon equivalent gray cast iron treated with different rare earth addition, it can be

In the experiment, the molten iron of the same furnace is used to prepare gray cast iron according to the

The strength of gray cast iron depends on the type of graphite and matrix structure in its microstructure. When the

1.Liquidity test As shown in Figure 1, the experimental fluidity test adopts the method of single helix wet sample. The