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As-cast spheroidizing agent

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As-cast spheroidizing agent

Xiaobian introduces you to the as-cast spheroidizer, I hope everyone knows! An additive that crystallizes graphite in cast iron into a spherical shape, which is called a "spheroidizing agent". The main component of the "spheroidizing agent" is a spheroidizing element such as Mg, Re, Ca or the like. ball...

As-cast spheroidizing agent

Xiaobian introduces you to the as-cast spheroidizer, I hope everyone knows!


An additive that crystallizes graphite in cast iron into a spherical shape, which is called a "spheroidizing agent". The main component of the "spheroidizing agent" is a spheroidizing element such as Mg, Re, Ca or the like. The spheroidal graphite in ductile iron is formed by spheroidizing the cast iron liquid, which makes the strength much higher than that of gray cast iron. The toughness is better than that of malleable cast iron, and it can maintain a series of advantages of gray cast iron. However, the "spheroidizing agent" used in the casting of ductile iron can increase the tendency of the weld to produce "white mouth" and harden the structure, so that the weld and the heat affected zone (especially the fusion zone) induce cracks. Therefore, the ductility of ductile iron is worse than that of gray cast iron.

High-magnesium series spheroidizing agent, suitable for cupola melting, iron content of 0.06%-0.09% sulfur, the amount of addition is between 1.6%-2.0%. Low-aluminum spheroidizing agents are used in castings that are prone to subcutaneous pore defects, as well as castings that require aluminum in the molten iron. The spheroidizing agent produced by pure Re and pure La has less pure inclusions and rounded graphite balls after spheroidizing treatment. The spheroidizing agent produced by cerium-based heavy rare earth is suitable for large-section castings, delaying spheroidization and preventing massive graphite. Sb-containing spheroidizing agent is used for pearlitic ductile iron. Low silicon spheroidizing agents are used in foundry plants that use large amounts of recycled materials; nickel magnesium spheroidizing agents are used in high nickel austenitic ductile irons.

The above is the as-cast spheroidizer that Xiaobian will explain to you. If you want to know more information, please pay attention to us!




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