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Ferritic ductile iron
Ductile iron is a high-strength material developed in the mid-20th century. By spheroidizing the carbon in pig iron, this new type of material, which is inexpensive and has comprehensive properties close to steel, was obtained. Its excellent cost performance has been successfully used to cast some parts with complex stress and high requirements for strength, toughness, and wear resistance.
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What is ductile iron?
Ductile iron is a high-strength cast iron material developed in the 1950s, and its comprehensive performance is close to that of steel. It is based on its excellent performance that it has successfully cast some parts with complex force, high strength, high toughness, and high wear resistance.
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What are the main properties of ductile iron?
Main properties of ductile iron: Ductile iron castings have been used in almost all major industrial sectors that require strength, plasticity, toughness, wear resistance, abrasion resistance, severe thermal and mechanical shock, high or low temperature, corrosion resistance, dimensional stability, etc.
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Do you know what ductile iron is?
Ductile iron is a high-strength cast iron material with comprehensive properties close to steel, developed in the 1950s. It has been successfully used to cast parts that are subject to complex stresses and require high strength, toughness, and wear resistance due to its excellent performance. The term 'replacing steel with iron' mainly refers to ductile iron, which has rapidly developed into the most widely used cast iron material after gray cast iron.
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Features of ductile iron solidification, features of riser design
Generally speaking, the tendency of shrinkage cavities and porosity in ductile iron castings is much greater than that in gray iron castings, and preventing shrinkage defects is usually a very difficult problem in process design. In this regard, the experience summarized from actual production is very inconsistent, and each has its own views: some people believe that ductile iron castings can only be produced with small risers to produce qualified castings, sometimes without risers; some people believe that the principle of sequential solidification should be followed, and large risers should be placed at the solidification site to supplement the volume shrinkage of the casting during solidification.
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Main properties of ductile iron
Main properties: Ductile iron castings are used in almost all major industrial sectors, requiring high strength, plasticity, toughness, wear resistance, severe heat and mechanical shock resistance, high and low temperature resistance, corrosion resistance, and dimensional stability. To adapt to these changing conditions of use, ductile iron has many grades, providing a wide range of mechanical and physical properties.
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