Grey cast iron and ductile iron are two popular types of cast iron used in various industries. Although they share some common properties as cast iron materials, there are significant differences between them due to their unique microstructures. This article will provide a comparative study between grey cast iron...
1. Analysis of cavity layout process The ductile iron casting process (see Figure) is divided from one end. All the ductile iron castings are in the lower box. There are 8 castings in one box. The left and right rows are arranged in a strip pattern. There are 4...
In order to study the action mechanism of silicon element on high silicon ductile iron, the microhardness of ferrite matrix of ductile iron samples with different silicon content was measured, the element distribution was observed by scanning electron microscope, and the change of ferrite lattice constant was analyzed by...
(1) Ductile iron samples with silicon content of 2.9%~4.6% were prepared by EPC process, and the matrix structure was ferrite. When the silicon content was 2.92%, the average diameter of spherical graphite of QT450-10 ductile iron samples was about 35.6 μ m. The average number of graphite balls per...
Tensile strength and Brinell hardness are two important indicators to evaluate the properties of nodular cast iron. The test results of mechanical properties of as cast ductile iron samples with different silicon content are shown in the table. It can be seen that the tensile strength, yield strength, elongation...
The graphite morphology of ductile iron samples with different silicon content is shown in Figure 1. With reference to the international standard GB/T 9441-2021 Metallographic Inspection of Ductile Iron, the nodularity of graphite is more than 90%, and the roundness of graphite is basically unchanged. Sample No ω (Si)...
In order to study the effect of different silicon content on the structure and properties of ductile iron and the mechanism of silicon on high silicon ductile iron, one group of QT450-10 ductile iron samples was designed as the control group, and three groups of high silicon ductile iron...
With the development of industrialization in China, ductile iron has become the main metal material in industrial production due to its good comprehensive performance, mainly based on ferrite matrix, and the typical brand is QT450-10. Because of its excellent mechanical properties, it has been widely used in metallurgical machinery...
(1) A new generation of high-performance piston is manufactured by using ferrite ductile iron, such as QT600-7 profile split method. That is, use ductile iron pipes to process the piston head, use ductile iron bars to process the piston skirt, and then use inertial friction welding to obtain the...
During the production of the ductile iron profile, the medium frequency induction furnace can be used for smelting. The number of graphite balls can be increased through multiple inoculation and spheroidizing treatment. Generally, the inoculant used is 75SiFe or silicon strontium, and the spheroidizing agent is FeSiMg6RE2. The centrifugal...