Gray cast iron is a widely used construction material with a unique combination of properties such as very good thermal conductivity, vibration damping ability, and good machinability. Nucleation sites for graphite in grey cast irons [3-7] recently, the thermal analysis became an important tool to reflect the solidification behavior of. Production cast iron is made from pig iron, which is the product of smelting iron ore in a blast furnacecast iron can be made directly from the molten pig iron or by re-melting pig iron, often along with substantial quantities of iron, steel, limestone, carbon (coke) and taking various steps to remove undesirable contaminants. Cast iron usually refers to gray iron, ductile iron and malleable iron which is an iron casting with carbon content higher than 2% which is an iron casting with carbon content higher than 2% cast steel usually refers to normal carbon steel and alloy steel.
Thus, 1000 kg of cast iron was produced using 200 kg of pig iron, 650 kg of gray cast iron scrap (gg 25) and 150 kg of aisi1020 steel scrap the melt was homogenized at 1480 °c in an 8 khz, 350 kw induction furnace. Overseas foundry may 2009 145 thermal analysis control of in-mould and ladle inoculated grey cast irons male, phd, professor research interest: cast irons. Understanding cast iron page 3 of 13 this is the case when heat is applied to an entire part or an ear or a corner of a part. 1 introduction gray cast iron is the most common material used in north american water systems, representing about 50% of the total length of installed water mains.
Cast iron 1 gray iron 2 nodular (ductile) iron 3 white iron 4 malleable iron 5 compacted graphite iron microsoft powerpoint - steel and cast iron06ppt. Image analysis reports flake size in gray iron maximum size (length) of flakes, longest flake, astm a247 sample: gray cast iron flakes in cast iron astm a247. Spec 3400-4 of 5 vault steps requires grey cast iron astm a48 step integrally cast into manhole side walls failure analysis of gray iron pump housings although there is no set standard for the chemical composition of astm a48 gray cast iron , the typical weight percent of carbon ranges from 310. Gray iron, or grey cast iron, is a type of cast iron that has a graphitic microstructure it is named after the gray color of the fracture it forms, which is due to the presence of graphite  it is the most common cast iron and the most widely used cast material based on weight. Measure nodularity, flakes and porosity in cast iron as per astm a247 using our image analysis software analyze microhardness and nodularity with our hardness testing system cmthd.
Thermal analysis of cast iron title: cover brochure created date: 5/1/2007 9:53:41 pm. Iron casting properties: iron castings are produced by a variety of molding methods and are available with a wide range of properties cast iron is a generic term that designates a family of metals. What is grey cast iron grey cast iron (aka gray iron) is a type of iron found in castings known for its grey color and appearance caused by graphite fractures in the material specifically, what makes grey iron grey iron, is the graphite flake structure that is created during the cooling process from the carbon that is in the component. Gray cast iron provides the technical advantages of high strength, soundness, good machinability, dimensional stability and uniformity of properties usually required by such cast components achieving these characteristics is dependent, however, on achieving proper and uniform structures tnrougnout all sections of the casting. 11 these test methods cover the chemical analysis of pig iron, gray cast iron (including alloy and austenitic), white cast iron, malleable cast iron, and ductile (nodular) iron having chemical compositions within the following limits.
Iron foundries cast 3 major types of iron: gray iron, ductile iron, and malleable iron cast iron is an iron-carbon-silicon alloy, containing from 2 to 4 percent carbon and 025 to 300 percent silicon. The results of the experimental measurements were then used to explore whether linear elastic analysis can be used to approximate the mechanical behavior of gray cast iron pipes under applied loads most failures in gray cast iron pipes can be attributed to loads that produce bending. The method is used on gray cast iron to investigate the microstructural strain-fields in addition to this the dependence of the different microstructural parameters, such as eutectic cells, chemical composition and mechanical properties of the material are investigated.
Opposed to their chemical analysis because heat treatment of cast irons metal is the base material for both cast iron and cast steel gray irons are alloys of. The grey and white in the names of grey and white cast iron refer to the appearance of their interiors when split open, a piece of grey cast iron ranges from pale to dark grey, while white cast iron is much lighter. Cast iron fatigue professor stephen d downing cast iron analysis - strain life gray iron is stiffer in compression than tension because the spaces occupied. 4 of oem case cast iron knife clips for sickle mowers see more like this case old abe cast iron bank pre-owned $24500 or best offer free shipping.