Effect of treatment temperature on matrix structure of nodular cast iron
The figure shows the matrix structure of as cast ductile iron. It can be seen from figure a that the […]
The figure shows the matrix structure of as cast ductile iron. It can be seen from figure a that the […]
Taking nodular cast iron as the research object, the influence of mechanical vibration on the microstructure and properties of nodular
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
The cylinder heads of high-speed and heavy-duty marine diesel engines are mostly high toughness ductile iron (see Figure 1). The
In recent years, with the development of mechanical equipment towards portability, low energy consumption and high efficiency, new requirements are
Nodular cast iron is a spheroidal graphite cast iron obtained by spheroidization and inoculation. From the aspect of production, the
Nodular cast iron belongs to multi-element alloy, and the main influencing elements are Fe, C and Si. Its as cast
Nodular cast iron is a widely used cast iron material at present. Because of its good mechanical properties, relatively simple
As a high-performance material, nodular cast iron has been widely used in many industries. After years of development, the output
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
Nodular cast iron is a kind of cast iron whose graphite is spherical after treating molten iron with spheroidizing agent.
In order to explore the effect of ultrasonic treatment time on the microstructure and properties of ductile iron, a group
Aiming at the research and application of preparation technology of high-performance nodular cast iron crankshaft, an exploratory study was made
(1) In laboratory experiments, applying ultrasound during solidification can refine the microstructure of nodular cast iron, increase the roundness of
Using 340mm feldspar ink probe, add ultrasound into the spheroidizing bag, the action time is 1min, and the indication of
After spheroidizing, the experimental molten iron is poured into the mold, ultrasonic wave is applied to one of the cavities,
Compared with gray cast iron, nodular cast iron has strict requirements for chemical composition. The raw molten iron of nodular
As shown in Figure 1, the scanning photo of impact fracture micro morphology of B2 sample of nodular cast iron
The casting process of crankshaft affects the quality of crankshaft. The casting process parameters include sparing injection temperature, winding injection
The composition of nodular cast iron crankshaft obtained from ZHY Casting is shown in the table. Cinnamon sand is used
Shrinkage cavity and porosity are shrinkage casting defects produced in the solidification process of nodular cast iron. The solidification characteristics
With the rapid development of automobile industry, the production and sales of engine are also increasing year by year. As
Iron mold coated with sand has long manufacturing cycle, high cost and complex process test. Once the process design fails,
In order to further study the impact toughness of nodular cast iron for wind power fittings, the impact fracture of
The manufacturing process of cast crankshaft generally starts from the aspects of molten iron melting, spheroidizing treatment, inoculation treatment, alloying,
The commonly used crankshafts at home and abroad are divided into two categories according to materials, forged steel and ductile
The testing experiments of nodular cast iron wind power castings include chemical composition testing, mechanical property testing, metallographic structure analysis
Starting from the research on the low-temperature impact toughness of nodular cast iron, the chemical composition, mechanical properties, metallographic structure