Di pipes fittings manufacturing business opportunity ductile iron pipe fittings ductile iron pipes are available in a range of diameters. The main objective of the ductile iron society is to advance the technology, art, science of ductile iron production and to disseminate all such information to the members. G iron with free download of seminar report and ppt in pdf and doc format. The nodular graphite provides the same free machining benefits as lead, without creating the machining and waste disposal problems. Information and translations of ductile iron in the most comprehensive dictionary definitions resource on the web. Whilst the production of ductile iron is more involved than grey iron, it is still possible to produce complex shapes which are more easily machined than steel. Production of ductile iron castings without feeders possibilities of producing ductile iron castings in green sand mould without feeders by means of ingate feeding and control of the graphite precipitation pattern by means of advanced thermal analysis. Method of producing ductile iron foseco international limited. Detailed standards for ductile iron pipe, fittings, and appurtenances are available from the american water works association awwa. Processing techniques and productions of ductile iron. China castings ductile iron, grey iron, grey cast iron fc250, find details about china furnace doors, slag pot from china castings ductile iron, grey iron, grey cast iron fc250 guangzhou xinerxun metal trade co. All ductile iron flanged fittings shall be rated for water pressure of 250 psi. Also online is our 2 page why convert to ductile iron, designs in ductile iron and ductile iron data, which gives complete property and specifications information. Ductile iron also offers flexibility in casting a wide range of sizes, with sections ranging from very thin to very thick.
The common defining characteristic of this group of materials is the shape of the graphite. Process for producing ductile iron by treating liquid iron with an. The new development of ductile iron production techniques, such as coredwire injection wirefeeding. Mechanical joint pipe sizes 30inch through 48inch were eliminated from ansiawwa c151a21. Dipra since production had entirely converted to ductile iron. The term pig iron arose from the oldfashioned method of casting blast furnace iron into molds arranged in sand beds in such a manner that. Ductile iron data for design engineers revised edition. Ductile iron pipe were introduced to the market in 1955. It is not intended to be a complete textbook or handbook on ductile iron. The production of ductile iron is 3035% cheaper than steel and 34% times cheaper than nonferrous alloys and only 2030% more costly than normal grey iron.
Ashraf sheikh department of industrial and manufacturing engineering, rachna college of engineering and technology, gujranwala, pakistan received 20071109 abstract. Recent development of ductile cast iron production technology in. Ductile iron is a kind of spherical graphite cast iron. The globalization and inoculation processes effectively improved the mechanical properties, particularly increased plasticity and toughness, which is higher than the strength of carbon steel. Asm handbook, volume 1a, cast iron science and technology. Austempered ductile iron adi is finding an ever increasing worldwide market in the automotive and other sectors. Its chemical components did not have strict range for many material standards, however, its range should be useful for buyers to evaluate the quality of cast iron therefore, we filled some normal standards to show the reasonable range to ductile iron. Journal of university of science and technology beijing volume 15, number 5, october 2008, page 552 materials production of carbide free thin ductile iron castings m.
Ductile iron is primarily used for pipes, tubes, and fittings, and for. The first step of the production of ductile iron cast. G iron with abstract or synopsis, documentation on advantages and disadvantages, base paper presentation slides for ieee final year mechanical engineering me or production automobile students for the year 2019 2020. The ductile iron pipe samples were tested with five coating conditions. Microstructure and properties of ductile iron and compacted. Ductile iron is not a single material but part of a group of materials which can be produced with a wide range of properties through control of their microstructure. For the same pressure design, ductile iron pipe will have a greater wall thickness than steel pipe. In ductile irons, graphite is in the form of nodules rather than flakes as in grey iron. Feel free to view the ductile iron design engineers digest, a 48 page summary of ductile iron properties, applications and design ideas. The first step towards the casting simulation is to collect the data and the drawing of the required component. Ductile iron pipe is a pipe made of ductile cast iron commonly used for potable water transmission and distribution. Cast iron offers the design engineer a lowcost, highstrength material that can be easily cast into a wide variety of useful, and sometimes complex, shapes. Austempered ductile iron production properties applications.
Cast ductile and alloy iron check valves for use in commercial and industrial applications. Ductile iron is also called ductile cast iron, spheroidal graphite cast iron, or nodular cast iron. We produce all standard grades of ductile iron including 654512, 805506, and 1007003 as well as austempered ductile iron, and customer specific grades. Ductile iron is a high strength, tough material used in water and wastewater systems in all 50 states of the united states and in many other areas of the world. Ductile iron is also called as nodular iron or sg iron. Its strength, toughness and ductility duplicate many grades of steel and far exceed those of standard gray irons. Ductile iron is a specific type of cast iron in which the free graphite is in the shape of nodules or spheroids. Ductile iron is also known as nodular cast iron, spheroidal graphite iron, spherulitic iron.
While it covers installation procedures, maintenance, and recommended safety precautions, it is intended only as a guide, and does not replace appropriate specifications and standards. The seminar is organized to instruct operations people on the basics of producing quality ductile iron castings. G cast iron is defined as a high carbon containing, iron based alloy in which the graphite is present in compact, spherical shapes rather than in the shape of flakes, the latter being typical of gray cast iron. Enlighten those considering ductile iron production to the controls and tests. Production of carbidefree thin ductile iron castings. Method of producing ductile iron free patents online. Ductile iron pipe is typically manufactured with larger inside diameters than steel pipe, resulting in lower pumping costsand an average 21% savings in energy costs. Ductile iron pipes offer all the benefits of cast grey iron but. Sahoo, mtlcanmet, studied the factors affecting the formation of carbides in thinwall ductile iron. Willman industries is a grey and ductile cast iron foundry focused on providing the best value in iron castings to companies in north america.
The attractive properties of adi return to its distinct and unique microstructure, which consists of fine acicular ferrite within cenriched stabilized austenite. The results described in this paper show that unalloyed ductile iron. A comprehensive study was carried out to design a production route for thin wall ductile iron castings free of eutectic carbides. Metal technologies currently has the capacity to produce 110,000 tons of ductile iron each year. Pdf processing techniques and productions of ductile. The fast cooling rate of thin ductile iron castings requires special consideration to produce carbide free castings.
Diameterinch welding production for piping construction di. Production and properties of thinwall ductile iron castings. Ductile iron structure, properties and applications. Ductile iron is a growth metal in the casting industry to the point of approaching grayiron production levels. Welding of ductile iron with nifemn filler metal a new filler metal system can be used with several welding processes to produce joints in ductile iron that match or exceed base metal properties up to 80,000 psi 552 mpa by t. Ductile iron what ductile iron is ductile iron is a family of cast graphitic irons which possess high strength, ductility and resistance to shock. Effect of magnesium and calcium as spheroidizers on the. Pdf analysis of ductile iron production on steel scrap base. While most varieties of cast iron are weak in tension and brittle, ductile iron has much more impact and fatigue resistance, due to its nodular graphite inclusions. Ductile iron pipes offer all the benefits of cast grey iron but are stronger, more durable and flexible. The term pig iron arose from the oldfashioned method of casting blast furnace iron into.
Finished repaired water flange fittings with water flow meters gates. However, total casting quality requires sound castings free of shrinkage, porosity. Oluwasegun abstractductile cast irons are materials having strength, impact toughness and ductility comparable to those of many grades of steel while exceeding by far those of standard gray irons. Pig iron refers to the primary iron production of a blast furnace that contains over ninety percent iron. A significant amount of ductile iron production is devoted to the manufacture of pipes, eg. The details for the flange are tabulated in table 1.
The castings show the presence of carbides in the bars. Durabar ductile iron is a costsaving alternative to lowmedium carbon steels and has similar strengths with excellent free machining properties. Ductile iron production practices karsay, stephen i on. When used in place of grey iron, the design of the casting is lighter. Ductile iron, also known as ductile cast iron, nodular cast iron, spheroidal graphite iron, spheroidal graphite cast iron and sg iron, is a type of graphiterich cast iron discovered in 1943 by keith millis. Side view of ductile iron pipes stored in open space store yard. Ductile iron pipe and fittings manual of water supply practices m41 third edition awwa manual m41. Production of ductile iron castings without feeders. The material of the flange casting is ductile iron having tensile strength 500 nmm 2 with 7% elongation. In this study, a test casting assembly with section thicknesses from 3 to 10 mm representative of actual castings was designed using computer modeling technique.
Other names for ductile iron are nodular iron or spheroidal graphite iron. Applications the wide range of properties mean that the various grades of ductile iron can be used in a variety of applications. It offers a range of mechanical properties superior to those of other cast irons, and shows excellent economic competitiveness with steels and aluminum alloys. For over 100 years, we utilize cuttine edge foundry technology to ensure you get high quality and cost effective cast iron parts every time you order.
Ductile iron pipe industry global production analysis. Ductile iron metal casting resources reliance foundry. It explores utilitarian aspects of the production of highquality cast iron. In ductile iron pipe design, allowances for casting tolerances and for minor. Willman industries is a grey and ductile iron casting foundry focused on providing the best value in grey and ductile iron castings to companies in north america. These standards and manuals include design, dimensions, materials, coatings, linings, joints, accessories, and methods of inspection and testing. The youngest but most successful member of a truly ancient family, ductile iron has suffered from an abundance of myths and a lack. Continuous testing and field experience have brought the production and use of ductile iron pipe to maturity.
The ductile iron used to manufacture the pipe is characterized by the spheroidal or nodular nature of the graphite within the iron. Mar 19, 2012 austempered ductile iron production properties applications 1. This site is like a library, use search box in the widget to get ebook that you want. The casting process involves a preparation of shells. It is a comprehensive summary of data describing the engineering properties of ductile iron. Bare no asphaltic shop coat, standard production annealing oxide intact. About the ductile iron pipe research association dipra from its inception more than 100 years ago, the ductile iron pipe research association dipra has provided accurate, reliable, and essential engineering information about cast iron and now ductile iron pipe to a wide variety of utilities and consulting engineers. The primary objective of this guide is to assist producers of ductile iron castings in obtaining higher levels of quality reliability.
Another presentation on thinwall casting production 074 by a. Solution strengthened ferritic ductile iron iso 1083js. Heavysection ductile iron castings asm international. China castings ductile iron, grey iron, grey cast iron. Mechanical joint ductile iron pipe is addressed only through 24inch diameters in ansiawwa c151a21. Production of ductile iron is influenced by a large number of metallurgical, technological, heat transfer and designing parameters. Annealed cast ductile iron can be bent, twisted or deformed without fracturing.
Quality and yield improvement of ductile iron casting by. Austempered ductile iron adi is a relatively new engineering material with exceptional combination of mechanical properties and marked potential for numerous applications. Analysis of ductile iron production on steel scrap base article pdf available in international journal of cast metals research 274. While ductile iron can be produced from steel or iron scrap, pig iron is the primary source of infeed for most modern ductile iron foundries. Pdf mechanical properties of sgiron with different. Ductile iron, also known as spheroidal or nodular iron, has many beneficial. The present invention relates to a method for nodularizing treatment of ductile iron using a ladle treatment method for nodularizing of a magnesium ferrosilicon alloy, where a magnesium ferrosilicon nodularizing alloy consisting essentially of 40 to 80% by weight of silicon, 2 to 15 % by weight of magnesium, 0,3 to 5 % by weight of lanthanum, 0 to 6 % by weight of calcium, 0 to 5 % by weight. We have specialized in producing castings in our iron foundry for over 100 years, yet we stay on the cutting edge of foundry technology to ensure high quality and cost effective. Ductile iron finds application as a substitute for steel, malleable iron and nonferrous alloys. Effect of basic chemical element in sgi ductile iron. Click download or read online button to get ductile iron handbook book now. The ductile iron pipe industry has also suffered a certain.
Us20040042925a1 method for production of ductile iron. G iron with abstract or synopsis, documentation on advantages and disadvantages, base paper presentation slides for ieee final year mechanical engineering me or production automobile. Ductile iron gives wide range properties for automobile parts. Fittings are and seal coated in accordance with ansiawwa c104a21. Figure 3 shows the predicted cooling rates as a function of wall thickness for castings made with conventional molding sand, as. Polyethylene encasement for ductileiron pipe systems.
Recent development of ductile cast iron production technology. Mechanical properties of sgiron with different matrix structure article pdf available in journal of materials science 365. Mar 14, 2019 ab digital via comtex ductile iron pipe industry 2019 description. Pdf production of ductile iron using indigenously manufactured. Pdf production of ductile iron using an indigenous 100kg rotary furnace was achieved using the ladle treatmentsandwich. Because of the high cooling rate of thinwall ductile iron castings, they said special practices and procedures are needed to assure the development of a. Also explore the seminar topics paper on spheroidal graphite s. The present invention relates to a method for nodularizing treatment of ductile iron using a ladle treatment method for nodularizing of a magnesium ferrosilicon alloy, where a magnesium ferrosilicon nodularizing alloy consisting essentially of 40 to 80% by weight of silicon, 2 to 15% by weight of magnesium, 0.
The fast cooling rate of thin ductile iron castings. Ductile iron handbook download ebook pdf, epub, tuebl, mobi. Recent development of ductile cast iron production. Guidelines installation guide for ductile iron pipe. This type of pipe is a direct development of earlier cast iron pipe, which it has superseded. Mgo, and only the free residual magnesium promotes nodularisation of graphite spheroids. One old round red faucet on a yellow iron gas pipe water pipes joined with valves water supply system two large pipeline valves on the heating main pipes pipes and valves at oil refinery drink water pipes joined gate valves and reduction members. In addition, they have the same advantages of design flexibility and low. Wo2004022791a1 method for production of ductile iron. Although nearly identical chemically, the two irons are quite different metallurgically. Pig iron refers to the primary iron production of a blast furnace that contains over. Research programs aimed at improving production technology, solving long standing production problems, and providing better manufacturing. January 24, 2018 mcwane ductile utah, embracing the mcwane way from start to finish.
The title describes both the contents and the objective of this book. Ecob customer services manager, elkem as, foundry products division abstract the objective of this paper is to provide an overview of some of the most common metallurgical defects found in the production of ductile cast iron today. Ductile cast irons are materials having strength, impact toughness and ductility comparable to those of many grades of steel while exceeding by far those of standard gray irons. Extraordinary care was taken to select the charge to produce castings of 100mm long round bars with 16mm diameter. The present invention relates to a method for nodularizing treatment of ductile iron using a ladle treatment method for nodularizing of a magnesium ferrosilicon alloy, where a magnesium ferrosilicon nodularizing alloy consisting essentially of 40 to 80% by weight of silicon, 2 to 15 % by weight of magnesium, 0,3 to 5 % by weight of lanthanum, 0 to 6 % by weight of calcium, 0 to 5. Ductile iron is a type of cast iron known for its impact and fatigue resistance, elongation, and wear resistance due to the spherical round graphite structures in the metal.
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