Application of Sb element in high-strength nodular cast iron tile cover

A nodular cast iron, high-strength technology, applied in the application field of producing high-strength nodular cast iron tiles, can solve problems such as inability to digest and use recycled materials, rising product costs, and increased recycling costs, so as to achieve recycling and uniform distribution , the effect of saving resources

Active Publication Date: 2012-09-26
西峡县众德汽车部件有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the suitable large-scale tile molding method is the vertical molding process, but the yield rate of this process will be greatly limited. In the actual molding, a large amount of recycled materials cannot be digested and used, and the alloy elements such as Cu and Cr contained in it cannot be reused. Compared with other products, the recycling cost increases, resulting in an increase in product cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] In order to produce high-strength ductile iron tiles, 0.015% of antimony and 0.3% of manganese are added to molten iron by weight to replace traditional copper and chromium. The pearlite values ​​of 0.6% copper and 0.1% chromium are equivalent, and the pearlite distribution is uniform without segregation. The Si content in cast iron is increased from the original 2.1% to 2.3%.

Embodiment 2

[0020] In order to produce high-strength ductile iron tiles, 0.005% of antimony and 0.6% of manganese are added to molten iron by weight to replace traditional copper and chromium, and the pearlite content of the final cast iron reaches 60%, which is different from traditional The pearlite value of 0.3% copper and 0.3% chromium is equivalent, and the pearlite distribution is uniform without segregation, and the Si content in cast iron is increased from the original 2.0% to 2.2%.

[0021] Antimony can be added to nodulizers and then added to molten iron, or powdered antimony powder can be added directly to molten iron. Manganese is electrolytic manganese or manganese-containing ferromanganese alloy, which is added to molten iron in block or granular form.

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PUM

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Abstract

The invention discloses application of an Sb element in a high-strength nodular cast iron tile cover. On the basis of the weight of the melt, 0.005-0.015% of stibium and 0.3-0.6% of manganese are added into the melt in a casting ladle. Compared with the traditional application of adding massive Cu, Cr and other alloy elements, copper, chrome and other alloy elements are substituted by stibium so that the consumption is obviously reduced, the pearlite content of the nodular cast iron is stabilized above 60%, and the pearlite distribution is uniform without segregation; and by using the stibium, the Si element content in the nodular cast iron is properly increased, the Si content range is widened, the boiling point of the stibium is much lower than that of copper and chrome, and the stibium waste is more beneficial to reutilization, thereby saving the resources.

Description

technical field [0001] The invention relates to the application of Sb element in the production of high-strength nodular cast iron tiles. Background technique [0002] With the rapid improvement of automobile technology, the power of the engine is getting higher and higher, which puts forward higher requirements for the material quality of the engine parts. The material quality of the key component tile cover is the most important. The original gray cast iron and low-grade ductile black cast iron can no longer meet the requirements of use, and higher materials are needed to replace them. However, the current common practice is to add Cu, Cr and other alloying elements to reduce Si elements in the production process of high-strength ductile iron tiles to ensure a large amount of pearlite, so as to ensure the high strength of the material. In addition, the suitable large-scale tile molding method is the vertical molding process, but the yield rate of this process will be gre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D1/00C22C37/04
Inventor 李平衡王青松
Owner 西峡县众德汽车部件有限公司
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