Cast Iron Castings
Cast iron is classified in to fire basic types: each type is generally based on graphite morphology as following:Gray Iron
Ductile Iron
Malleable Iron
Compacted Graphite Iron
White Iron
Technology
Casting Technology, include casting methods, casting material and casting standards.
Sand Casting Process
A sand casting is also divided resin sand casting and green sand casting. sand casting is produced when molten metal is poured at atmospheric pressure into a cavity formed in a compacted molding sand. In typical ferrous casting, the mold would be bonded with 6 to 8 percent western bentonite mulled with 2 to 3 […]
The sand casting Comparison
The sand casting comprison in green sand casting, resin sand casting.Sodium silicate bonded sand casting and dry mould casting
Investment Casting Process
Investment casting( precision casting, also named lost wax casting ) is an advanced metalforming process used to produce metal parts of the highest quality, functionality and cost-effectiveness. Investment casting( precision casting) is a one-to-one process in which one disposable pattern produces one metal part. When combined with modern production knowledge and technologies, Investment casting( precision casting) can be […]
DIN 1693 Cast Iron with Nodular
Cast Iron with Nodular Graphite Unalloyed and Low Alloy Grades – DIN 1693 , ductile iron standard
DIN 1691-1985 Flake graphite cast iron (grey cast iron) Properties
DIN 1691-1985 Flake graphite cast iron (grey cast iron) Properties.pdf, cast iron stardand, DIN 1691 has been superceded by DIN EN 1561. Grade GG 25 is now called EN-JL 1040 or EN-GJL-250, The equivalent ASTM standard and grade is A 48 Grade 40B.
What is American Ductile Iron?
The Ideal of cast iron with ductility, long sought by metallurgists, was realized with the introduction of ductile iron in 1948. Acclaimed to be one of the most significant metallurgical developments in this century, ductile iron has had an increasing impact in many industries. Ductile iron has ductility – as the name implies – and […]
Heat treatment of Metals (5)
ANNEALING The primary purpose of annealing is to soften hard steel so that it maybe machined or cold worked. This is usually accomplished by heating the steel to slightly above the critical temperature, holding it htere until the remperature of the piece is uniform throughout, and then cooling at a slowly controlled rate so that […]
Heat Treatment of Metals (4)-Tempering
Tempering is possible because of the instability of the martensite, the principal constituent of hardened steel. Low temperature draws, from 300′ F to 400’F (150′ – 205′ C)
ASTM A48 / A48M – 03(2008) Standard Specification for Gray Iron Castings
ASTM A48 / A48M – 03(2008) Standard Specification for Gray Iron Castings, casting material standard.
Heat Treatment of Metals (3)-Hardening
HARDENING Hardening is the process of heating a piece of steel to a temperature within or above its critcal range and then cooling it in rapidly. If the carbon content of the steel is known, the proper temperature to which the steel should be heated may be obtained by reference to the iron – iron […]
Spheroidal Graphite Cast Iron
Ductile iron, also called ductile cast iron, spheroidal graphite iron, or nodular cast iron. While most varieties of cast iron are brittle, ductile iron is much more flexible and elastic, due to its nodular graphite inclusions.
Heat Treatment of Metals (2)
Steels having less than the eutectioid amount of carbon (less than 0.77%) are known as hypoeutectoid steels. Consider now the transfomation of such a material represented by cooling along line y – y’ in Fig 1.1. At high temperatures, the material is entirely austenite, but upon cooling enters a region where the stable phases are […]
Heat Treatment of Metals (1)
The understanding of heat tratment is embraced by the broader study of metallurgy. Metallurgy is the physics, chemistry, and engineering related to metals from ore extraction to the final product. Heat treatment is the operation of heating and cooling a metal in its solid state to change its physical properties. According to the procedure used, […]
ASTM A128 Steel Castings, Austenitic manganese
The material in A128 Standard is suitable to sand casting and investment casting method. Standard Specification for Steel Castings, Austenitic Manganese This specification covers Hadfield austenitic manganese steel castings and alloy modifications.
ISO 3755-91 Cast Carbon Steels
This Standard material is suitable to sand casting and investment casting. ISO 3755:1991 Cast carbon steels for general engineering purposes This International Standard specifies requirements for eight grades of heat-treated cast carbon steels for general engineering purposes. Four of the grades have a restricted Chemical composition to ensure uniform weld-ability. 1.2 In cases where castings […]
ASTM A217 Steel Castings, Martensitic Stainless and Alloy
Steel casting, sand casting, investment casting standard, ASTM A217 WC1,WC4,WC9,WC5,WC6,WC11,…. Abstract This specification covers steel castings, martensitic stainless steel and alloys steel castings for valves, flanges, fittings, and other pressure-containing parts intended primarily for high-temperature and corrosive service. The grades of steels covered here are: Grade WC1, Grade WC4, Grade WC5, Grade WC6, Grade WC9,
Compare with Iron and Steel
From the carbon content of material, we can divide iron and steel. Cast irons typically contain 2-4 wt% of carbon with a high silicon concentrations and a greater concentration of impurities than steels. Iron (Fe) is not a high-purity metal commercially but contains other chemical elements which have a large effect on its physical and […]
Fastener Products
Fasteners are manufactured in a wide range of materials from common steel to titanium, plastic and other exotic materials. Many materials are further separated into different grades to describe specific alloy mixtures, hardening processes, etc. In addition, some materials are available with a variety of coatings or plating to enhance the corrosion resistance, or appearance […]