Production method of toughness nodular cast iron
A technology of ductile iron and a production method, applied in the field of foundry processing, can solve the problems of low forming efficiency, high production cost, reducing the carbon and silicon equivalent of cast iron, etc., and achieves improved fatigue resistance and wear resistance, improved structural strength and toughness, The effect of reducing internal stress concentration
Inactive Publication Date: 2018-06-29
WUHU JINMAO FLUID TECH CO LTD
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Abstract
The invention relates to a production method of toughness nodular cast iron, which includes four steps of: mixing and smelting raw materials, performing metamorphic modification, performing modification and tempering, and performing tempering thermal treatment. In the invention, on one hand, by means of rare earth, the nodular cast iron which has uniform and continuous distribution and high hardness and is not reduced in ductility, is produced, wherein the structural strength and toughness of the nodular cast iron work piece are greatly improved; on the other hand, through metamorphic treatment, anti-fatigue performance and wear resistance of the nodular cast iron work piece are comprehensively improved; besides, by means of the casting method, defects, such as internal stress concentration, cracks and sand holes, in the nodular cast iron work piece are reduced effectively, thus improving the quality and structural strength of the nodular cast iron work piece.
Application Domain
Process efficiency improvement
Technology Topic
DuctilityContinuous distributions +10
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PUM
Property | Measurement | Unit |
Particle diameter | <= 400.0 | nm |
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