Rare earth-magnesium nodulizing agent

A technology of spheroidizing agent and rare earth magnesium, applied in the field of spheroidizing agent, can solve problems such as increasing the spheroidizing rate, and achieve the effect of increasing the spheroidizing rate and reducing the depth of white mouth

Active Publication Date: 2017-11-07
沈阳钢中宝科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although there are some relatively mature nodulizers in the prior art, from the perspectives of saving costs, shortening the process, reducing the use of rare earths, reducing pollution, reducing the amount of nodulizers added, reducing the tendency of whitening and increasing the nodularization rate, etc. Look, nodulizers still have a lot of room for improvement

Method used

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  • Rare earth-magnesium nodulizing agent
  • Rare earth-magnesium nodulizing agent
  • Rare earth-magnesium nodulizing agent

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Embodiment Construction

[0015] The present invention will be further described in detail below in conjunction with the embodiments, so that those skilled in the art can implement it with reference to the description.

[0016] This case proposes the rare earth magnesium nodulizer of an embodiment, comprises the material of following weight part:

[0017]

[0018] As another embodiment of the present application, 0.5-1.5 parts by weight of barium and 0.05-0.1 parts by weight of molybdenum are further included.

[0019] As yet another embodiment of the present application, 0.05-0.1 parts by weight of cerium is further included.

[0020] As yet another embodiment of the present application, 0.05-0.1 parts by weight of yttrium is further included.

[0021] As yet another embodiment of the present application, 0.005-0.01 parts by weight of rubidium oxide is further included.

[0022] The following table lists the specific composition and performance parameters of different embodiments:

[0023]

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Abstract

The invention discloses a rare earth-magnesium nodulizing agent. The rare earth-magnesium nodulizing agent comprises the following materials, by weight, of 60-62 parts of silicon, 3-5 parts of calcium, 6-8 parts of magnesium, 0.3-0.5 part of sulfur, 25-27 parts of iron, 1-3 parts of lanthanum, 0.2-0.4 part of gadolinium, 0.5-1.5 part of barium, 0.05-0.1 part of molybdenum, 0.05-0.1 part of cerium, 0.05-0.1 part of yttrium and 0.005-0.01 part of rubidium oxide. Through improvement and optimization for a composite-type rare earth-magnesium nodulizing agent formula, multiple elements with the synergistic effect are introduced, the nodulizing rate of the nodulizing agent for graphite is increased, and meanwhile the chill depth of the nodulizing agent for cast iron is decreased.

Description

technical field [0001] The invention relates to a nodulizer, in particular to a rare earth magnesium nodulizer for treating nodular cast iron. Background technique [0002] When casting iron, it will contain 2 to 4% carbon, which will be closely combined with iron, and the form of carbon in solidified cast iron is very important for the performance of cast iron. If this carbon is in the form of iron carbide, the cast iron is called white iron, which is hard and brittle and of poor practicality. If the carbon is in the graphite state, the cast iron is soft and easy to process, and it is called gray cast iron, which is practical. [0003] The graphite state can be divided into flake, dense and spherical, among which the spherical form can show the highest strength and the most ductile form of cast iron. During the solidification of cast iron, the additive that causes graphite to form a spheroid is called a spheroidizer. Usually, the pros and cons of nodulizers are measured ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21C1/10C22C33/10
CPCC21C1/105C22C33/10
Inventor 瞿欢欢
Owner 沈阳钢中宝科技有限公司
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