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Ductile & Nodular Iron

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Overview of ductile iron treatment methods--part 2: ductile iron is made by the special treatment of liquid cast iron with spheroidising or nodulising material. During this treatment, graphite changes its form from flake to nodular or spheroidal. The treatment process is a key operation in production of ductile iron that ensures predetermined microstructure, mechanical and engineering propert...
IN LADLE TREATMENT METHODS Open ladle process is currently used for treating liquid iron mostly with heavy magnesium...
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Overview of ductile iron treatment methods: ductile iron is made by the special treatment of liquid cast iron with spheroidising or nodulising material. During this treatment, graphite changes its form from flake to nodular or spheroidal. The treatment process is a key operation in production of ductile iron that ensures predetermined microstructure, mechanical and engineering properties of ...
Today, magnesium, pure or in a form of master alloy, is the most effective nodulising agent used by...
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Timeline of ductile iron history.
From Millis' research activities in the 1940s to this year's 50th anniversary of its announcement, ductile iron's road...
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The invention of ductile iron ... in Millis' own words.
The late Keith Millis recounted his discovery during a 1983 Ductile Iron Society speech celebrating the 40th anniversary...
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Converting steel weldments to ductile iron castings.
Working closely with its foundry, this OEM found cost savings by changing several products to ductile iron cast...
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GRAVITY DIECASTING of ductile iron.
Gravity diecasting of ductile iron: Gravity diecasting is one of precision casting methods used to produce near net...
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Shot peening ductile iron.
Shot Peening Ductile Iron Shot peening is a production process too often confused and used synonymously with shot...
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Inoculation Material Improves Graphite Formation in Ductile Iron. (Technology in Progress).
Elkem ASA Kristiansand Inside This Story: * An inoculant containing cerium (Ce), calcium (Ca), sulfur (S) and oxygen...
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Ductile iron: one of the century's metallurgical triumphs.
Good graphite nodules make quality ductile iron. A variety of nodulizing processes is available to fit most foundry...
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GISSA to invest $51 million in Mexican iron foundry. (Industry News).
Grupo Industrial Saltillo (GISSA), Saltillo, Coahuila, Mexico, the parent firm of the iron foundry Cifunsa and aluminum foundry...
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Improve the performance of your ductile iron pressure pour.
You can make the most out of your pressure pour by focusing on the metallurgical needs of magnesium...
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Welding ductile iron to steel: a new welding process will allow ductile iron castings to be welded to steel, making fabrications using both metals a reality.
When welded, ductile iron is liquefied in the welded area and may solidify with a carbidic structure in...
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An alternative route for the production of CGI: this paper reviews the properties desired from a compacted graphite iron, these being an intermediate between grey and ductile irons. (Metal Treatment).
Compacted graphite iron (CGI) has been known for many years, although it is only recently that it has...
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Austempered ductile iron: fact and fiction.
Austempered Ductile Iron: Fact and Fiction Realizing the full potential of austempered ductile iron calls for a more...
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The ductile iron honor roll.
Key Contributors to the Metal's Advancement Following is a glimpse of the people who took Keith Millis' lab...
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What's in a name?
What's In a Name? Have you ever been asked by newcomers to the foundry industry, or people outside...
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Various processes for forging crankshafts
HEADNOTE The trend is clear. The auto industry will continue to move toward forged crankshafts as engines become...
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Modern cupolas minimise metal costs. (Furnaces).
Cupola plants can supply the foundry with hot metal at the correct temperature, with the right chemistry, reliably,...
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A systematic approach to cast iron defect analysis.
Quality gray and ductile iron casting production requires control of numerous metal, mold and core variables. Defective castings...
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Iron foundry benefits from new nodularizing process.
A gray iron plant has successfully incorporated ductile iron casting with the help of a revolutionary magnesium addition...
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The advantages of rotating: the cast iron foundry industry in Western Europe has been driven to cut costs in recent years by globalisation.
In addition the environmental pressures (and legislative restrictions) in the more technologically advanced nations have increased. The rotary...
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The expanding world of metals: Not just steel and cast iron
IMAGE PHOTOGRAPH 2 Magnesium is gaining more acceptance in the auto industry because of its strength and light...
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Gray iron inoculation revisited.
Twelve years ago, an article appeared in modern casting that reviewed the process of gray iron inoculation. [1]...
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Sic vs. 75% FeSi: comparing pre-inoculation effects.
The advancement of thin wall iron casting for weight reduction could play a significant role in the design...
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In-mould treatment processes in iron foundry practice: part II of the article published in the previous issue of foundry trade journal. (Technology Report).
Another in-mould magnesium treatment process is described in the same patent. Fig 19 shows the magnesium containing pellets...
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Product showcase.
METALCASTERS' BUYERS' GUIDE 1990 MELTING EQUIPMENT & MATERIALS Induction Furnaces . . . Firm offers a range of...
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Developing In-the-Mold Treatment for CGI.
As the production of CGI components continues to grow, foundries must utilize the correct solution factor to ensure...
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Computer guided inoculation simplifies CGI production.
Compacted graphite iron's image is taking on a new luster after an uneventful four decades as a casting...
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Reducing slag-related defects in cast iron.
Analyzing melt operations can identify possible slag and carbon interactions that generate defect-forming CO gas. Producers of iron...
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Internet acquires remaining 50% interest in joint venture.
Internet Corp., Troy, Michigan, has entered into an agreement with Grupo Jorge de Mello, Portugal, to acquire 100%...
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Intermet will absorb Portuguese JV
Intermet Corp. agreed to acquire the outstanding 50 percent of Fundicao Nodular S.A., or PortCast, from its joint-venture...
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A new look at pig iron.
As minimills increase their use of metal scrap, many iron and steel foundries look to upgrade their charge...
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Metals/alloys/heat treating
Many factors beyond cost and availability come into play when selecting a metal or metal alloy for a...
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Metals/alloys/heat treating
IMAGE TABLE 4 CONTENTS ADVERTISERS any factors beyond cost and availability come into play when selecting a metal...
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Q What is Armasteel? Is it still available? If not,what is a replacement material?
Many years ago, the General Motors (GM) metalcasting division developed an alloy known as Armasteel for use in...
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Faulty inoculation causes microstructure anomalies.
Foundrymen depend on two key processing steps to achieve the desired microstructure of ductile cast iron. If the...
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Danish wind farm sets Swedish foundries spinning: Zoltan Tiroler from the Swedish Foundry Association, looks at the increasing importance of wind power to the Scandinavian foundry industry.
Sweden gets most of its electricity from hydropower and nuclear power. There are also a number of combined...
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Metals/alloys. heat trating
Many factors beyond cost and availability come into play when selecting a metal or metal alloy for a...
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Casting answers & advice.
Q: our customers often ask if there are industry-recognized standards that define ductile iron casting quality. What are...
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Old tool design takes off
IMAGE PHOTOGRAPH 1 Having languished more or less in obscurity for decades, rotary-insert tools-milling and boring tools with...
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TOOLING & WORKHOLDING: PRODUCT SNAPSHOTS
INSERTS FOR FINISH BORING Big Kaiser Precision Tooling introduces Alcrona (AlCrN) inserts for finish-boring tools in high-speed and...
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Select the right compressor
HEADNOTE Making the best choice means understanding how flows and pressures relate to available machines, and seeing if...
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Sessions Target Improved Processes.
Of the 20 sessions presented by the AFS Cast Iron Committee (Div. 5), the majority focused on iron's...
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Taking another road pays off for R.H. Sheppard Co.
Investing in compacted graphite iron production allows this foundry to capitalize on the material's growing domestic and world...
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Chapter 3 Applied cutting tool engineering: Machinability of metals
HEADNOTE Metal Removal Cutting-Tool Materials Metal Removal Methods Machinability of Metals Single Point Machining Turning Tools and Operations...
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CGI casting: a new iron in the fire.
A new metal-forming process that modernizes the age-old cast-iron foundry industry allows compacted graphite iron (CGI) to be...
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Experiments on the treatment of Compacted Graphite Iron.
Introduction In 2001, at a meeting of Cti's Iron Castings Research Committee, it was suggested that a project...
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High-speed machining goes mainstream.
Machine tool builders are combining new cutting tools and CNC controls with high-speed spindles and rapid-traverse axis drives...
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It's About Productivity-Your Productivity!
IMAGE PHOTOGRAPH 1 Powermill(TM) sinusoidal inserts deliver serious milling productivity with less horsepower consumption. IMAGE PHOTOGRAPH 2 Powermill(TM)...
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Casting in the Czech Republic: The Czech Republic, strategically located in the centre of Europe, is one of the best developed industrialised emerging market economies in central and eastern Europe. (Regional Report).
The Czech metal casting industry has undergone dramatic changes during the past 50 years. Since 1950, there has...
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