Causes of shrinkage casting defects of nodular cast iron piston rings and preventive measures
Although the upper and lower wall thickness of the cylinder is relatively uniform when casting the nodular iron ring, the […]
Although the upper and lower wall thickness of the cylinder is relatively uniform when casting the nodular iron ring, the […]
Because the piston ring industry in China started to use nodular cast iron as the piston ring material of motorcycles
In recent years, the development of nodular cast iron is very fast in our country. The proportion of nodular cast
The characteristics of high-end castings are high level of performance and high stability of quality, both of which are indispensable.
The transformation and upgrading of many foundry enterprises is the foundation of China’s transformation from a big foundry country to
In cylinder casting, the subcutaneous pores are mainly distributed at the position of L ~ zmrn under the outer circular
1.The content of carbon, silicon, manganese, rare earth and magnesium must be appropriate. High carbon content can reduce the tendency
The characteristics of spheroidization decline: good spheroidization before furnace, poor spheroidization on castings; or good spheroidization of castings poured first
(1) The influence of chemical composition on carbon equivalent is the biggest. In heavy section ductile iron, carbon equivalent should
Anti whitemouth phenomenon On the section of iron castings, the opposite phenomenon of normal section appears. In the central part
The following measures can be taken: (1) When wet casting is adopted, the moisture content in the sand must be
The bad spheroidization means that the spheroidization does not achieve the expected effect. The metallographic structure of poor spheroidization is:
Fast graphite fragmentation The broken fast graphite is a kind of deformed graphite which often appears in the large end
Ductile iron castings are one kind of globular graphite machined by spheroidization and inoculation treatments. Ductile iron castings can have
Birth In 1074, H. Morrogh from UK found if Ce composition is added into one hypereutectic grey iron casting, where
Rare Earth Helps Improve The Properties As for the study on high-strength and low-aloyed ductile cast iron, related considerations are
Rare Earth Helps Improve The Properties So it’s very necessary to add rare earth element according to the actual situation
Ductile iron casting process sometimes can replace expensive cast steel and forging steel. Ductile iron casting process is widely used
Iron casting can divided into many different form. Because we can add many kinds of different alloys to add different
Ductile iron cast is a kind of spheroidal graphite which has been dealt by spherify and modification. By this way,
A lot of experts take the technology of ductile casting iron as the study object to develop their research. For