Archive > Casting Technology > November-February 2011
CASTING TECHNOLOGY November-December 2010 & January-February 2011 Issue
A Complete Global Publication on Ferrous and Non-Ferrous Foundries
Study on Solidification Behaviour of LM6 Castings by Using Computer Aided Simulation Software
Non-ferrous metals & foundry sectors to shine in coming years
The government has released the Union Budget for the fiscal 2011-12. The Budget move towards a more transparent and result oriented economic management system in India.
Study on Solidification Behaviour of LM6 Castings
by Using Computer-Aided Simulation Software+
Method layout of a casting is an important aspect of tooling development. It involves decisions regarding part orientation in mould, parting line,
cores, cavity layout, feeders, neck and gating system. An improper method layout leads either to poor quality or low yield, which affects the
productivity. Method design is mostly carried out manually, using 2D drawing of the cast part. Then, tooling fabricates the sample castings, which
undergo 3-4 trials, which involves lot of production cost in the farm of wastage of manpower, time and hamper the day-to-day schedule of the
particular production. Computer simulation provides a clear insight regarding the location and extent of internal defects, ensuring right casting
as first time and every time.
Bradken announces expansion plan
Bradken, Newcastle, Australia, announced to spend 18.1
million dollars to expand the capacity and capabilities of its
Amite, La., metalcasting facility. The Amite facility
manufactures and machines large steel castings for several
industries, including mining, construction, dredge, marine,
and oil and gas.
Optima Group acquires CC Metals
Optima Group LLC has acquired CC Meatls and Alloys
LLC, the largest producer and supplier of specialty ferroalloys
to the global iron foundry industry.
Electrosteel Castings signs JV deal
with Dart Energy
Electrosteel Castings, one of the principal manufacturers
of elastic iron pipes used in transportation of water, has signed
a Joint Venture deal (JV) with Dart Energy intended for
degassing its captive Parbatpur coal mine situated in the Jharia
basin of the Jharkhand, India.
Forgemasters' quality eclipses
competitionManufacturing quality has won Sheffield Forgemasters
a large American steel castings order, securing re-entry into
an existing geographic market and beating off competition
Laforo Iron Foundry obtains
Productivity Optimization Funding
Laforo Iron Foundry having its headquarters in Sainte-
Claire, Quebec has obtained $330,000 as Productivity
Optimization Funding from the Canada Economic
Development program, being a part of its Business and
Regional Growth program.
Harvey Industries acquires R.E.
Harvey Industries, a holding company with operations
producing aluminium and iron castings, machined and
assembled parts, and polymer injection moldings, has acquired
the diecasting operations of R.E. Phelon Company Inc., Aiken,
ME Global in expansion mode
ME Global Inc., Minneapolis, is to invest around $23.4
million for the expansion programme at its metalcasting
facilities in Duluth, Minn., and Tempe, Ariz.
No Turkey, yet ferrous exports showcase
Turkey has been absent within the domain of export
regarding ferrous scrap from U.S. for some time, yet, sales to
the steelmakers in the Mediterranean and the Far East persist
on a stable path.
Correlating Fracture Toughness and Texture in Cast
and Annealed Al-6Mg Alloy with Minor Additions
of Scandium and Zirconium
Deformation of Al-Mg alloys is suitable for structural applications where corrosion resistance is important. The effect of trace addition of scandium
and zirconium has been investigated by using XRD and transmission electron microscopy. Texture and fracture toughness of Al-Mg-Sc and
Al-Mg-Sc-Zr alloys of varying compositions annealed at 300°C were investigated. It has been found that scandium modifies the microstructure of
Al-Mg alloy and considerably improves the fracture toughness property of the alloy at the temperature of interest when deformation becomes
homogeneous due to coarsening of Al3Sc precipitates. Addition of Zr increases the fracture toughness value even further.
Realisation of Lightweight Machine Tool
Components by Modern Foundry Technology
Several Machine tool components are cast metals made in foundries. They are generally of grey cast iron with some alloying, and in some cases
Spheroidal Graphitic iron. Historically, machine tools like any other machine might have been fabricated in steel with a number of cross-ribs for
stiffness, and eventually the foundries were asked to duplicate the prototype in Iron. Now, in order to optimise the weight of components, it is
important to re-evaluate the design inputs in terms of the various static and dynamic loads, and simultaneously work with foundries and review
the characteristics of cast metals in terms of their strength, yield, ductility, hardness, wear resistance, fatigue properties, castability, reliability of
foundry process etc. The paper reviews a range of metals including metal foams and recommends a structured concurrent engineering process
between foundryman and designer to realise lightweight cast components.
Mechanism of In-situ Reinforcement Formation in
Fabrication of AA6061-TiB2 Metal Matrix
Aluminium matrix composites are attracting many researchers due to its superior properties like high specific modulus, stiffness, hardness, wear
resistance and strength. However, the mechanical properties of the aluminium alloy are adversely affected by the presence of the coarse reinforcement
particle, microstructural heterogeneity and a non-uniform distribution of particles. The composites synthesised using the in-situ techniques can
eliminate these limitations. Fine and small-size particle entrapment in the matrix-reinforcement interface helps in the formation of stronger
interfacial bond. TiB2 is a refractory compound that exhibits high melting point, hardness, modulus and elevated strength. Flux-assisted synthesis
is an economic method to produce the Al-TiB2 in-situ composite. However, the commercial application of this composite requires lot of understanding
on the mechanism of in-situ reaction. An attempt has been made to investigate the mechanism of in-situ reaction in production of AA6061-TiB2
metal matrix composite.
Some Way for Improving Steel Quality in Tundish
Continuous casting has gradually replaced ingot casting
over the years, reaching 50% of the annual crude steel production
in Japan by 1978, in Italy and former West Germany by 1980,
in Korea by 1982, in the U.K. by 1984, and in the U.S.A. by
1986. Large ingots for forgings and small lot production of
diverse grades of steel are still produced by ingot casting. Great
effort has been devoted no improving the surface and internal
quality of continuously cast products to obtain a higher premium
cast-metal yield. At the same time, continuous casting
productivity was increased substantially to keep pace with the
increasing raw steel production capacity. Currently, well over
95% of carbon steels and speciality steels are produced through
Modification of Al-Si Alloys by Heat Treatment
Modification of eutectic silicon in a hypoeutectic Al-5Si alloy and a hypereutectic Al-15Si alloy has been attempted by isothermal heat treatment
at 560°C (below eutectic temperature) and 600°C (above eutectic temperature). Isothermal heat treatment at 560°C resulted in fragmentation,
spheroidisation and clustering of silicon particles in both the alloys. Isothermal treatment at 600°C resulted in globularisation of the a-Al phase
in Al-5Si alloy and modification of only eutectic silicon in Al-15Si alloy.
Sunoco posts Q4 2010 results
Sunoco, Inc. posted net income of $87 million ($0.72 per
share) for the fourth quarter of 2010 as compared to net income
of $26 million ($0.22 per share) for the same quarter of the
SEMINAR & CONFERENCE
2nd Minerals & Metals Summit-2011, Bhubaneswar
In the mineral map of India, the state of Odisha occupied
an important place in terms of both deposit and production.
India is abundantly rich in mineral resources and has a long
history of mining, mineral production and mineral utilization.
Odisha, the major state of India, is endowed with vast mineral
resources and produces minerals, which includes non-metallic,
metallic and fuel minerals.