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Article Archive Nov. 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. Expendable Pattern Casting, Lost Foam Casting Process - on Nov. 30, 2011
    Expendable pattern casting process is also called as lost foam casting process, which is adapted to cast steel, cast iron, cast aluminum and other metal castings, and large, medium and small castings of different structures and a variety of materials.
  2. Iron Castings - on Nov. 29, 2011
    Iron castings include grey iron casting, ductile iron castings and alloy iron castings according to the different material grades. The followings are some casting products from Dandong Foundry in China.
  3. Hard Sand Casting - on Nov. 28, 2011
    Hard sand casting means the sand casting produced by the hard molds, such as resin sand casting, shell molding process and water glass sand casting process.
  4. How to calculate rough weight of iron and steel castings - on Nov. 25, 2011
    Iron foundries need to calculate the estimated rough casting weights during quotation process. Estimated rough weight is very important for the prices. Lower and higher weight will directly affect the prices of iron and steel castings.
  5. Rough Machining for Metal Castings - on Nov. 24, 2011
    Rough machining is important for exported metal castings. It can largely reduce the defective rates of castings, and can meet the dimensional requirements to some positions.
  6. Advantages and Disadvantages of Resin Sand Casting Process - on Nov. 22, 2011
    Resin sand is a common casting material in foundry industry, so resin sand casting process is a main casting method for iron castings. This article will introduce its advantages and disadvantages to buyers for iron castings.
  7. casting flask, moulding flask, sand box, molding box - on Nov. 21, 2011
    Casting flask is also known as moulding flask, sand box or molding box. It is an essential tooling in the production of sand castings. Suitable casting flasks could improve the casting quality, and reduce the consumption of molding sand, so to reduce the production costs.
  8. The Advantages of Metal Casting - on Nov. 17, 2011
    The metal casting process is almost free from the restrictions of the size, thickness and shape of castings, casting wall thickness can be up to 0.3-1000mm, the length varies from a few millimeters to ten meters, and the quality can be from a few grams to more than 300t.
  9. Development of Metal Foundries in China - on Nov. 16, 2011
    China is changing from a large iron casting producer to a cast iron power. We must overcome energy, resources, human resources bottleneck and environmental issues in reality.
  10. KS D4101 - Standard for Engineering Structural Cast Steel - on Nov. 11, 2011
    This is a Korea standard for the chemical analysis and mechanical properties of engineering structural steel. This material has higher strength, mechanical properties, shock resistance and corrosion resistance.
  11. Brief of China Metal Foundry Industry - on Nov. 10, 2011
    For many metal casting buyers, especially those foreign buyers, some basic facts of China’s metal foundry industry are significant, so in this article, we will provide you some basic information for your reference.
  12. Why is rough casting weight important? - on Nov. 07, 2011
    Rough casting or raw casting means the metal castings without machining, or before machining process. Rough casting weight is larger than machined casting weight, but why is this weight so important for the casting prices?
  13. Standard Specifications for Metal Casting Tolerances - ISO 8062, ISO 286, ANSI B4.1, ISO 2768 - on Nov. 04, 2011
    These standards provide guidance for metal casting linear dimension tolerances where no other requirements exist for form, fit or function (general tolerances). We made a comparison table for ISO 8062, SFSA 2003, ISO 286-2, ISO 2768 and ANSI B4.1.
  14. Gray Iron Castings Hardness Requirements - on Nov. 03, 2011
    They are used as the general engineering gray iron castings which take tensile strength as the main consideration, and are classified into different grades according to the tensile strength of different test bars.
  15. The advantages of ductile iron manhole cover - on Nov. 02, 2011
    Ductile iron manhole covers are made primarily by ductile iron, or called as nodular iron or sg iron. Whether the quality is good or bad depends on the nodularity. Rust-proof asphalt pain is commonly used in casting process.
 

 

 

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