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Wind power pig iron
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Wind power pig iron

Element index (%): [C] ≥ 3.8%; [Si] 0.3-1.0%; [Ti] ≤ 0.03%; [Mn] ≤ 0.1%; [P] ≤ 0.03%; [S] ≤ 0.03%; 11 trace elements total ≤ 0.06%

Product description
Wind power pig iron is an iron-carbon alloy with a carbon content of 3.4-4.5%. The matrix structure is mainly composed of ferrite, pearlite, graphite and a small amount of cementite. The chemical composition is mainly composed of six elements: C, Si, Mn, P, S, and Ti. It has the remarkable characteristics of low sulfur, low phosphorus, low titanium, low manganese, low trace elements, and low anti-spheroidizing element index. Wind power pig iron is a new product independently developed by the company. It is a special pig iron developed mainly for the special needs of wind power equipment. It was recognized as a national new product in 2020. It is a group standard formulation unit for wind power products in my country. The production process technology is at the leading level in China and can be customized according to different customer indicators.
Customer challenge
Castings quality is problematic
The chemical composition of non-pig iron materials used by customers is relatively unstable, and the content of harmful trace elements is relatively high compared to pig iron. It is easy to mix with polluting elements such as lead, aluminum, zinc, chromium, etc. For example, excessive phosphorus can easily cause brittle castings, reduce the elongation, toughness and low-temperature impact performance of castings, and excessive titanium, vanadium, arsenic, lead and other elements can easily lead to special-shaped graphite and cementite, affecting the body organization and reducing mechanical properties.
High cost of material melting
The non-pig iron materials used by customers have a lower iron output than pig iron, a single pig iron material type, an iron output rate of more than 99.5%, and few impurities, and a small tendency of slag holes and castings to leak; non-pig iron materials have a high slag output, an iron output rate of less than 96%, and it is difficult for workers to slag, the labor intensity is high, the slag holes and castings have a high tendency to leak, and the loss of castings is high.
Low iron yield and high tonne losses
The melting cost of non-pig iron materials used by customers is high, and the power consumption increases by about 100 degrees per ton of molten iron compared to using pig iron.
Relatively unstable chemical composition
The amount of spheroidizer and carburizer used by customers for non-pig iron materials is higher than that of pig iron, which increases the cost. If not properly controlled, it is easy to cause quality problems such as component segregation, graphite floating, and even shrinkage of castings.
Value advantage
  • Moderate block size, no rust and no slag
    Moderate block size, no rust and no slag
    The pig iron block size is moderate, with a single weight of 4-5 kg, no rust, no slag, no honeycomb, high thermal conductivity, and greatly reduced power consumption;
  • Arc design, smooth surface
    Arc design, smooth surface
    The outer shape is designed with an arc, the surface is round and smooth, in the shape of a "yuanbao", without flash and burrs, reducing the damage of the iron block to the electric furnace lining and extending the life of the electric furnace lining.
  • Standardized control
    Standardized control
    From raw materials to smelting, from molten iron to pig iron, the whole process adopts digital intelligent batching and standardized process control.
  • Short delivery cycle and fast delivery speed
    Short delivery cycle and fast delivery speed
    adjacent to the port, convenient water and land transportation, Shandong, Jiangsu, Zhejiang, and Anhui can achieve the same-day delivery, and can achieve zero inventory of pig iron for foundries.
  • Rich casting experience and senior expert team service
    Rich casting experience and senior expert team service
    With more than 60 years of casting experience of the Meide Group, a senior expert team has been created to provide users with solutions in smelting, modeling, molding sand, digitalization, etc., to fully serve foundries, cooperate and win-win, and create a better future for foundries.
Application scenario
Engine components
Engine components
Key components of wind power equipment
Key components of wind power equipment
Low temperature resistant and high toughness castings
Low temperature resistant and high toughness castings
Consulting
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