Wholesale GGG70 ductile iron bars, GGG70 sheet

Our material can not be listed as much as, or more portions for reference, there can be no doubt hotline: 0769-33367273, QQ: 1342110109 Li Ling 13669874955 GGG70 ductile iron ductile iron in general is mainly composed of iron, carbon and silicon alloy composition . In these alloys, the carbon content exceeds the eutectic temperature can be retained austenite amount in solid solution. Cast iron is mainly composed of iron, carbon and silicon alloy composition in general. In these alloys, the carbon content exceeds the eutectic temperature can be retained austenite amount in solid solution. Carbon content of more than 2% of the iron-carbon alloys. Industrial carbon content of cast iron is generally 2% to 4%. More carbon in cast iron exists in the form of graphite, and sometimes the form of cementite exist. In addition to carbon, the iron also contains 1% to 3% silicon, and manganese, phosphorus, sulfur and other elements. Alloy cast iron also contains nickel, chromium, molybdenum, aluminum, copper, boron, vanadium and other elements. Carbon, silicon is the main element affecting the microstructure and properties of cast iron. Cast iron can be divided into: ① gray cast iron. Higher carbon content (2.7% to 4.0%), carbon exists mainly in the form of flake graphite, gray fracture, referred to as gray iron. Low melting point (1145 ~ 1250 ℃), a small amount of shrinkage during solidification, compressive strength and hardness close to the carbon steel, good shock absorption. For the manufacture of machine bed, cylinder, box and other structural parts. ② white cast iron. Carbon, silicon content is low, carbon exists mainly in the form of cementite, the fracture was silver. Solidification shrinkage is large, easy to produce shrinkage cracks. High hardness, brittleness, can not withstand the impact load. More as blanks and production of wear-resistant parts malleable iron. Wan Hao company 0769-81886486③ malleable iron. After annealing white cast iron by the gain, the graphite was flocculent distribution group, called ductile iron. Its homogeneous performance, wear resistance, good ductility and toughness. For the manufacture of complex shape to withstand a dynamic load of parts. ④ ductile iron. The gray cast iron ball after treatment to obtain precipitated graphite spherical, called ductile iron. It has high strength, good toughness and ductility than conventional gray cast iron. For the manufacture of internal combustion engines, auto parts and farm machinery. ⑤ compacted graphite iron. The gray cast iron obtained after treatment creep, vermiform graphite precipitation. Mechanical properties of ductile iron similar between gray iron and ductile iron casting performance between. For the manufacture of automotive parts. Wan Hao company -⑥ iron alloy. Ordinary cast iron adding an appropriate amount of alloying elements (such as silicon, manganese, phosphorus, nickel, chromium, molybdenum, copper, aluminum, boron, vanadium, tin, etc.) get. Alloying elements iron matrix structure changes, so as to have a corresponding heat, wear and corrosion resistance, low temperature or non-magnetic properties. For the manufacture of mining, chemical machinery and equipment, instruments and other components.