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Production method of high-quality nodulizer

A production method and technology of nodulizers, which are applied in the production process of nodulizers with low oxidation and melting loss, and in the field of production with less segregation of chemical components, can solve the problems of low effective element absorption rate, violent reaction, and low magnesium oxide content. High problems, to achieve the effect of less segregation of chemical composition, stable quality and less melting loss

Active Publication Date: 2016-03-16
TIANJIN WANLU LTD CO OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The purpose of the present invention is to solve the problems of severe reaction, low effective element absorption rate and high magnesium oxide content in the melting process of rare earth magnesium ferrosilicon alloy, and reduce production cost and achieve energy efficiency under the premise of stabilizing and improving product quality. Recycle, reduce environmental pollution

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  • Production method of high-quality nodulizer
  • Production method of high-quality nodulizer
  • Production method of high-quality nodulizer

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Embodiment Construction

[0017] The implementation of the present invention will be further described in conjunction with the accompanying drawings:

[0018] Since the overall rare earth magnesium silicon ferrosilicon spheroidizer containing Mg10%, Si67%, RE1% has eliminated magnesium light during the smelting and pouring process of the nodulizer, and has reached a stable state, it is completely suitable for the spheroidization treatment temperature ≤ 1600 ℃ Therefore, it is of little significance to reduce the magnesium content; when the magnesium content needs to be reduced, the silicon content should be ensured to achieve a stable state where the nodulizer alloy liquid eliminates magnesium light during the smelting and pouring process.

[0019] The parts of the combined molten pool, except the outer frame 9 of the molten pool, the fastening bolts 10 and the fastening nuts 11, other components can be made of low carbon steel or heat-resistant cast iron.

[0020] Adjusting the spacing of the ribs 12 ...

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Abstract

The invention discloses a production method of a high-quality overall rare-earth magnesium-silicon-iron spheroidizing agent. The production method is characterized in that a first part is a rare-earth magnesium-silicon-iron spheroidizing agent of which the content of Mg is controlled to be not higher than 10%, the content of Si is controlled to be not lower than 65% and the content of RE (Rear Earth) is not higher than 2%, and the rare-earth magnesium-silicon-iron spheroidizing agent containing the ingredient realizes a magnesium light-free status during both melting and pouring, thus generation of magnesium oxide is greatly reduced; a second part is a combined type melting tank for pouring alloy liquid of the ingredient rare-earth magnesium-silicon-iron spheroidizing agent. A new process overcomes the problems of ingredient segregation and high magnesium oxide content of a conventional rare-earth magnesium-silicon-iron spheroidizing agent; the magnesium oxide content of the high-quality overall rare-earth magnesium-silicon-iron spheroidizing agent is smaller than 0.3%; the melting loss of spheroidizing agent alloy is small; the finished product rate of the high-quality overall rare-earth magnesium-silicon-iron spheroidizing agent with required weight and shape is high.

Description

technical field [0001] The present invention relates to the production method of the nodulizer used in the production of nodular cast iron, more specifically to the production method of the nodulizer with less segregation of chemical components and low oxidation and melting loss of the nodulizer during the production process. Background technique [0002] Rare earth magnesium ferrosilicon alloys are widely used as nodularizers in enterprises producing ductile iron castings. Rare earth magnesium ferrosilicon alloy nodulizer is currently the largest nodulizer at home and abroad, but in its traditional production process, it consumes a lot of energy, has large melting loss, and causes serious environmental pollution. Due to the low absorption rate of magnesium, the traditional nodulizer The amount added is larger. For a long time, technical personnel at home and abroad have made unremitting efforts to study the spheroidization treatment technology of the in-package method and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C33/10C21C1/10C21C7/076
CPCY02P10/20
Inventor 刘年路刘昌晨
Owner TIANJIN WANLU LTD CO OF SCI & TECH
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