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Article Archive Sep. 2011

Dandong Foundry is a professional Iron and Steel Casting Manufacturer in China. We share some standards
 and experiences to help buyers to better understand some technical issues with iron and steel castings. 

  1. The properties of grey cast iron, gray iron - on Sep. 29, 2011
    Grey cast iron is cheaper and easier for production, so this material has been widely used for industrial and residential fields. Therefore, learning about its property is very important.
  2. Stainless Steel Casting, Cast Steel Application in Various Industries - on Sep. 28, 2011
    In modern society, stainless steel castings are widely used in many industries, such as automotive industry, water industry, construction industry, appliance industry, environmental industry and so on.
  3. Malleable Cast Iron Hardness Requirements - on Sep. 27, 2011
    Pearlitic malleable iron castings (ASTM A220 M-88), Ferritic malleable iron castings (ASTM A47M-90), Malleable iron castings for automobiles (ASTM A602-87)
  4. sand inclusion, sand hole - casting defects - on Sep. 26, 2011
    Sand inclusion is also called as sand hole, which is a kind of metal casting defect. It looks like small or middle holes with sand grain in the internal or on the surface of castings.
  5. Green Sand for Iron Casting - on Sep. 23, 2011
    Green sand casting process is very suitable to produce iron castings, such as gray iron and ductile iron castings.
  6. ISO 7168, DIN ISO 7168 - F, M, G, SG Tolerances - on Sep. 22, 2011
    ISO 7168 - 2 comes from DIN ISO 7168 - 1, which is a general dimensional tolerance standard. This standard mainly divided the tolerances as four degrees as f, m, g and sg.
  7. Produce Umbrella Base - Cast Iron Base - on Sep. 20, 2011
    Umbrella base is a kind of cast iron base used for outdoor flags and umbrellas. Dandong Foundry in China is producing this product for customers in USA and Mexico.
  8. How to make a gas burner? - on Sep. 19, 2011
    One customer asked us how to produce a gas burner, so I told him the process of manufacturing gas burners, and share it here.
  9. ductile iron vs gray iron - on Sep. 18, 2011
    Some iron casting buyers may be confused about the ductile iron and gray iron, so herein, we discussing the ductile iron versus gray iron.
  10. Large Cast Steel Bracket G250 - on Sep. 16, 2011
    This large bracket was produced by our Dandong Foundry, its material is G250 mild steel, equal to BS3100 A2 carbon steel. We produced it by sand casting process.
  11. The density of ductile iron - on Sep. 15, 2011
    The density of ductile iron is approximate 7.3 g/cubic centimeter, or 7.3 kg/liter, or 119.6 g/cubic inch. However, the density has a range of variation because of the material degrees and shrinkage level.
  12. The Types of Ductile Iron - on Sep. 14, 2011
    High elongation of ductile iron, the silicon’s content is low, the matrix is completely ferrite. Its elongation is more than 20% and its high fatigue strength is more easily meet the design requirements.
  13. The differences between grey iron and ductile iron - on Sep. 13, 2011
    The difference in appearance of grey iron and ductile iron are not obvious. In general, the color of the fracture is different, the bright white one is ductile iron and the gray one is gray cast iron.
  14. Ductile Cast Iron Hardness Requirements - on Sep. 09, 2011
    Ductile iron is a very good material for metal castings, this kind of cast iron has globular graphite, and basically has no other form of graphite.
  15. A 395/A 395M-99 for Ductile Iron Castings - on Sep. 06, 2011
    Standard Specification for Ferrite Ductile Iron Pressure-Retaining Castings for Use at Elevated Temperatures.
  16. Pig iron prices in China - on Sep. 05, 2011
    Pig iron prices are very important to iron casting prices since pig iron is the main material for gray iron and ductile iron castings. For most of iron foundries, the cast iron prices should be adjusted according to the change of pig iron costs.
  17. The Metal Casting Output of China in 2010 - on Sep. 02, 2011
    In 2010, the total output of metal castings in China is 39.6 million tons. It shows the 12.2% increasing compared with the 35.3 million tons in 2009.
  18. How to deal with foundry? - on Sep. 01, 2011
    Some foreign friends once asked me how to deal with foundry in China, so I think it is necessary to share our experience about this issue.



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