Spherulitic Graphite Cast Iron Process

The iron is cast as a white iron of a suitable chemical composition. After the castings are removed from the mold, they are given an extended heat treatment starting at a temperature above 1650F (900C). This causes the iron carbide to dissociate and the free carbon precipitates in the solid iron as graphite.

Spherulitic graphite cast iron, also known as nodular cast iron, is an iron-carbon-alloy with a high carbon share of up to four per cent.. Accordingly, the structure of graphite has a big influence on the mechanic characteristics of the material.

A process for producing compacted graphite cast iron thin walled shaped castings in a high productivity line is provided which comprises: (i) forming a near eutectic melt of cast iron, having a low sulfur content, preferably around 0.01% by weight; (ii) adding to the melt sufficient graphite stabilizing agents such as silicon to suppress the ...

What is the difference between Galvanized Pipe and Ductile Cast Iron? Galvanized pipes are made of iron and zinc; ductile cast iron is produced with graphite ..

The casting process can have a significant effect on the structure and properties of gray iron casting. Gray iron is ... cast iron components. Gray iron casting ...

Increasing use of ductile iron, CGI, and austempered ductile iron will require changes in cutting tool technology. By Don Graham Product Manager, Turning Seco-Carboloy Warren, MI Gray cast iron has been a staple in automotive manufacturing for many years.

World Foundry Congress, Hangzhou, China in October 16-20, 2010. "Cast iron - a predictable material” New capabilities in casting process simulation to assess iron casting production and

Cast iron is unique in that carbon is added in excess of its solubility in iron at room temperature. During solidification, as the molten metal cools and the solubility limit of carbon in the iron decreases, excess carbon precipitates as solid particles of graphite.

5.2 This method defines a procedure for measuring the number of nodules and the quality of nodularity of spherulitic graphite in a cast iron microstructure. The specimen’s location in a casting or cast test specimen, and the orientation of the plane-of-polish, are governed by product standards.

Cast iron is made from pig iron, which is the product of smelting iron ore in a blast furnace. Cast 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.

Nodular iron, also known as ductile iron or spheroidal graphite iron, is cast iron in which the graphite is present as tiny balls, or spherulites, instead of graphite flakes (as in gray iron), or compacted aggregates (as in malleable iron). The nodular irons typi-cally contain from 3.2-4.1% C, 1.8-2.8% Si and up to 0.80% Mn as major constituents.

Jan 05, 2016· Difference between ductile iron and cast iron . Difference between . , . . . . Ductile iron vs cast iron. ... spheroidal graphite iron and spherulitic cast ...

What is Grey Cast Iron? ... the materials used and the process used to cast a ... of Grey Cast Iron. Grey iron has graphite flakes entwined with the ...

The ductile cast iron (also known as nodular cast iron / spheroidal graphitic iron), is produced with graphite in a spherulitic form. The nodularizing elements such as magnesium, cerium, lithium, sodium etc., are added to a molten metal bath of proper chemical composition to produce discrete particles of spheroidal shape graphite.

GRAPHITE CAST IRON BY HEAT TREATMENT” submitted by RANJAN MITTAL and SUNIT ... recent process and developments open new avenues to this family of materials.

PRODUCTION ASPECTS OF SPHEROIDAL GRAPHITE IRON ... cast iron, also referred to as ductile iron, nodular cast iron, spherulitic iron, ... factor in the process.

Definition of SPHEROIDIZING: Process of producing, by heat treatment, a structure in which the cementite in steel or cast-iron is in a …

Ductile cast iron also known as nodular cast iron, spheroidal graphite iron or SG iron, and spherulitic cast iron. The ductile iron process was developed by The International Nickel Company in 1948. As the name ductile iron suggests this grade of …

Ductile iron billets were continuously cast using a horizontal casting machine. The billets were cast successfully, and the overall quality of the billets was acceptable. The as-cast microstructure consisted of eutectic carbide, chunky …

Solidification, processing and properties of ... ing the knowledge of ductile iron process technology to ... In grey cast iron. graphite grows as large ßakes

Casting process simulation can provide answers to both, the casting designer and the foundry engineer. Therefore, it is important to not only qualify, but to quantify the mechanisms that define the solidification behavior of CGI. This can be accomplished by close cooperation between foundries and material process specialists.

sandwich process and poured into sand mould where it was ... spheroidal graphite iron or spherulitic graphite cast iron [2 ... Density of Molten Ductile Iron =6.98 x ...

Nodular cast iron is cast iron in which the graphite is present as tiny balls in metallic matrix. Nodular cast iron is also known as ductile …

Technical. SG Iron is also known as Ductile Cast Iron, Nodular Cast Iron, Spheroidal Graphite Iron and Spherulitic Cast Iron. As the name Ductile Iron suggests this grade of Cast Iron has a degree of ductility.

Carbon, 1975. Vol, 13, pp. 167-173. Pergamon Press. Printed in Great Britain ON THE GROWTH OF SPHERULITIC GRAPHITE IN NODULAR CAST IRON J. E. GRUZLESKI Department of Mining and Metallurgical Engineering, McGill University, Montreal, Canada {Received 12 September 1974) Abstract—Considerable evidence exists in the literature on graphite …

material：ductile iron; Production process：sand casting,precision casting and Silica sol casting; ... Spheroidal Graphite Iron, Spherulitic Graphite Cast Iron, ...

The latest addition to the family of cast irons is ductile iron, which was discovered in the 1940's. It is sometimes referred to as nodular iron and is called SG or spherulitic graphite iron in England.

Share on Facebook, opens a new window Share on Twitter, opens a new window Share on LinkedIn Share by email, opens mail client The mechanical properties of ductile iron produced from hybrid inoculants using the rotary furnace were investigated. Four heats were carried out and powdered graphite with ...

spherulitic graphite cast iron process international journal of scientific & Spheroidal graphite iron is also known as nodular cast iron, or spherulitic graphite cast iron (Degarmo, et al., 2003).

Ductile iron, also referred to as nodular iron or spheroidal graphite iron, was patented in 1948. After a decade of intensive development work in the 1950s, ductile iron had a phenomenal nine-fold increase in use as an engineering material during the 1960s, and the rapid increase in commercial application continues today.

SG Iron is also known as Ductile Cast Iron, Nodular Cast Iron, Spheroidal Graphite Iron and Spherulitic Cast Iron. This grade of Iron was developed over 60 years ago and in the USA. As the name Ductile Iron suggests this grade of Cast Iron has a degree of ductility. The main characteristic of this material is the structure of the graphite.

A ferrosilicon-based ferroalloy for inoculation of spherulitic graphite irons containing (by weight) from 0.005% to 3% rare earths, 0.005% to 3% bismuth, lead and/or antimony, and 0.3% to 3% calcium, and is characterized by the …

Cast iron and ductile iron have contrasting physical ... one must control the matrix structure around the graphite during the casting process or through ...

Cast Iron Spherulitic Graphite Spherulitic graphite offers qualities similar to steel, which are generated with a special metallurgic treatment. Thanks to the graphite contained in the spheres, chip interruption can be achieved, and the tool wear can be lowered despite relatively high strength.

Processing Techniques and Productions of Ductile Iron: ... grades of ductile iron by controlling the process ... is in the graphite form. Ordinary gray cast iron

Mechanical Properties of Spheroidal Graphite Cast Iron Made by Reduced Pressure Frozen Mold Casting Process Kazumichi Shimizu 1, Yaer Xinba , …

Solid Solution Ferritic Cast Iron With Spherulitic Graphite Solid Solution Ferritic Cast Iron With Spherulitic Graphite Solid solution ferritic cast iron with spherulitic graphite is used for applications where good processing, high ductility and high elongation limits are needed.

The spheroidal graphite cast iron equivalent grades, properties, composition, microstructure, density and castings made by Dandong Foundry in China.