Applicable industry

Applicable industry

Wind power

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Ningban’s special nodulant and Si-RE inoculant used in thick and large cross-section ductile iron (for making wind power equipment’scastings)

Casting’s specification ：

Weight: 23 tons

Material: EN-GJ400-18C-RT

Spheroidization rate: > 80

Mechanical property: with a tensile strength of 350-400Mpa

Process and molten iron’s composition

The raw materials used in the production of low-temperature ductile iron shall qualify stringent composition control - with a low content of trace alloying elements, the Si content of 2.1-2.2% and the Mn content of below 0.15% (Mn<0.15%).

 

Test lug’s metallographs Metallography microstructure of cast sample

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Structure and mechanical properties

Specimen

Spheroidization rate

Pearlite content

Test lug’s mechanical properties

 

 

 

Tensile strength

Yield strength

Percentage of extension
Elongation rate

Low temperature impact value

1#

95%

3%

380

231

21.5

16.6/15.4/16.6
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