Centrifugal casting technique baseline knowledge, applications, and processing parameters: overview

2016 ◽  
Vol 107 (10) ◽  
pp. 960-969 ◽  
Author(s):  
Williams S. Ebhota ◽  
Akhil S. Karun ◽  
Freddie L. Inambao
Keyword(s):  
Centrifugal Casting ◽  
Processing Parameters ◽  
Casting Technique ◽  
Baseline Knowledge

Principles and Baseline Knowledge of Functionally Graded Aluminium Matrix Materials (FGAMMs): Fabrication Techniques and Applications

2016 ◽  
Vol 26 ◽  
pp. 47-67 ◽  
Author(s):  
Williams S. Ebhota ◽  
Akhil S. Karun ◽  
Freddie L. Inambao
Keyword(s):  
Nuclear Energy ◽  
Chemical Engineering ◽  
Squeeze Casting ◽  
Centrifugal Casting ◽  
Processing Parameters ◽  
Stir Casting ◽  
Functionally Graded ◽  
Infiltration Process ◽  
Graded Materials ◽  
Baseline Knowledge

This paper discusses the main Functionally Graded Materials (FGMs) and their bulk fabrication techniques, their development, principles and applications. The fabrication processes considered include powder metallurgy (PM), sintering, squeeze casting, infiltration process, compocasting, centrifugal casting, stir casting, material prototyping. The paper provides an overview of the FGM processing parameters including reinforcement particles size and volume %, temperature, pressure (for PM), and stirrer and mould rotational speeds (for stir and centrifugal casting processes respectively). The paper notes that the FGMs are widely used in the following sectors: automotive, medical, aerospace, aviation, nuclear energy, renewable energy, chemical, engineering, optics electronics etc.

Spun Steel Pipes for the Offshore Industry

1983 ◽  
Vol 105 (1) ◽  
pp. 97-102 ◽  
Author(s):  
A. Royer ◽  
B. Dumas ◽  
M. Gantois
Keyword(s):  
Mechanical Properties ◽  
Chemical Composition ◽  
Centrifugal Casting ◽  
High Strength ◽  
Controlled Rolling ◽  
Climatic Conditions ◽  
Casting Technique ◽  
Steel Pipes ◽  
Potential Applications ◽  
Offshore Industry

Many parts either for sea-line pipes as “buckle” or “crack arrestor,” or for structures may require the use of wall tubular products with high mechanical properties. Such heavy-wall pipes may be produced by centrifugal casting. Two Mn-Mo steels have been developed for medium-wall pipes (e≤35 mm) to be used under very severe climatic conditions: an acicular ferritic steel, a pearlite reduced steel produced by controlled rolling techniques [1, 2, 3]. More alloyed chemical composition and heat-treatments are needed to produce heavy-wall pipes. Then, production of such pipes is more difficult and sometimes impossible. Observations made on controlled-rolled Mn-Mo steel led to a better understanding of the influence of metallurgical structures and chemical composition on steel characteristics. Similar metallurgical structures can only be reached via other routes, for example centrifugal-casting of steel associated with heat-treatment, lead to the production of heavy-wall pipes with high strength and suitable transition temperature. After a brief description of the centrifugal casting technique, we introduce the grades developed for heavy-wall pipes with yield strength up to 100,000 psi. The mechanical properties, Battelle, fatigue, static bending, C.O.D., weldability, etc., of Centrishore II are given and compared to other materials. Possible offshore applications and other potential applications of parts produced by centrifugal casting are described.

Investigation of fatigue behavior of centrifuged series 3000 Al with addition of 26 wt% Cu

2020 ◽  
Vol 234 (10) ◽  
pp. 1375-1385
Author(s):  
Aref Mehditabar ◽  
Seyed E Vahdat ◽  
Gholam-Hossein Rahimi
Keyword(s):  
Electron Microscopy ◽  
Thermal Expansion ◽  
High Performance ◽  
Volume Fraction ◽  
Coefficient Of Thermal Expansion ◽  
Fatigue Behavior ◽  
Centrifugal Casting ◽  
Image Analyzer ◽  
Casting Technique ◽  
Wide Range

More than 70% of mechanical parts in a wide range of engineering fields fail by fatigue. In addition, centrifugal casting is identified as the most effective casting technique for production of high performance cylindrical parts. In this regard, the present work aims to investigate the fatigue behavior of series 3000 Al with addition of 26 wt% Cu produced through horizontal centrifugal casting method. Microstructure characterizations are precisely studied using scanning transmission electron microscopy and field emission scanning electron microscopy in conjunction with image analyzer software. Also, compressive behavior, hardness, coefficient of thermal expansion, and wear rate ( Wr) are measured applying Zwick Z100, Vickers hardness, DIL 805A/D, and pin-on-disc machines, respectively. The results indicate that the main intermetallic compound is Al2Cu-based particle, and a volume fraction of 31 vol.% is obtained. Besides, the compressive strength of 460 MPa, elastic modulus of 10.986 GPa, hardness of 152 HV, coefficient of thermal expansion of 1.7 × 10−5 1/°C, and wear resistance of 3.3 × 10−6 g/mm2 are measured. Finally, the four-point bending fatigue test is performed and the fatigue ratio of 0.109 at about 106 cycles to failure is obtained.

Investigation of Particle Segregation and Solidification Time in FGM's Using Centrifuge Casting Technique

2015 ◽  
Vol 766-767 ◽  
pp. 956-961
Author(s):  
K.S. Chethan ◽  
S. Kiran Aithal ◽  
A. Madhusudan ◽  
Rao Shailesh
Keyword(s):  
Particle Size ◽  
Particle Size Distribution ◽  
Particle Distribution ◽  
Centrifugal Casting ◽  
Casting Process ◽  
Functionally Graded ◽  
Particle Segregation ◽  
Graded Materials ◽  
Influence Of Process Parameters ◽  
Casting Technique

Functionally Graded Materials (FGM) is a newly evolved concept to get desired properties in the material wherein the intermediate layer is transient since the particle size distribution gradually changes. Centrifugal casting [1] can produce only hollow shapes and Centrifuge casting can produce solid shape FGM very effectively. The study of particle distribution in a fluid using centrifuge casting process is carried out considering sand as particle and its distribution is studied under water, for different viscosity values and for viscosity varying with respect to temperature. Based on centrifugal force and density difference, an attempt has been made to mathematically model the centrifuge casting force to estimate the particle distribution over the length of the specimen and also to assess the influence of process parameters such as rotational speed (G-force) and density of the particles.

Ti-50.2Ni-5Zr Shape Memory Alloy Square Rots Production by the Casting Technique

2014 ◽  
Vol 783-786 ◽  
pp. 2445-2449
Author(s):  
K. Kitamura
Keyword(s):  
Shape Memory ◽  
Centrifugal Casting ◽  
Xrd Analysis ◽  
Casting Technique ◽  
Shape Memory Behavior ◽  
Phase Constituent ◽  
Treatment Conditions ◽  
Shape Memory Effects ◽  
Cold Rolled ◽  
Deformation Stress

The purpose of this study is to make the Ti-Ni-Zr specimen using casting method from P/M ingot and evaluates the shape memory behavior. All samples were square rod shape made by centrifugal casting. The size of all samples was 1 mm wide, 1.3 mm height and 37.5 mm length. The transformation behavior during cooling and heating was investigated using a differential scanning calorimeter (DSC). The phase constituent was determined by XRD analysis from 20 °C to 150 °C. Mechanical properties of the shape memory effects were measured using a tensile machine at 25 °C. The samples were annealed at 400 °C, 500 °C and 600 °C for 3.6 ks followed by water quenching. After annealing, specimens were cold rolled at 0 % (no rolling) and 10 %. The Ti-Ni-Zr square rod specimens are fabricated by centrifugal casting using P/M ingot. All samples had shape memory behavior. From DSC measurement, the highest reverse martensitic transformation temperature is 120 °C. From tensile test, the Luders like deformation stress were not constant and dependence of heat treatment conditions was not clarified. However, 10% cold rolling specimen, shape memory characteristics were stabilized.

Effect of stir casting parameters and mono/hybrid reinforcements on aluminium metal matrix composite–A review

2021 ◽  
pp. 095440622110521
Author(s):  
Uday KN ◽  
Rajamurugan G
Keyword(s):  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Aluminum Matrix ◽  
Processing Parameters ◽  
Stir Casting ◽  
Cylinder Block ◽  
Matrix Composites ◽  
Casting Technique ◽  
Piston Cylinder ◽  
Stirring Time

Aluminum metal matrix composites are a new class of materials that have gathered more attention from many materialists. Especially, the automotive components like a piston, cylinder block, brake drum, etc., fabricated by different reinforcement, which has exposed better performance over conventional engineering materials. Aluminum composites are generally fabricated by stir casting technique due to simplicity in operation and adaptive to mass or job order production. The paper provides a background for the readers interested in the production of metal matrix composites through stir casting. Based on the literature assessment, the special attentions taken by the researchers to enhance the uniform distribution of particle to avoid agglomeration are discussed. The composite performances mainly depend on the aluminum matrix, particle size, the quantity of reinforcement, preheating temperature of reinforcement, and processing parameters such as stirring speed, stirring time, and wetting agents. The selection of two reinforcements and their suitable parameters for wetting are attaining interest by many researchers and maybe opted as future scope.

DEVELOPMENT AND CHARACTERIZATION OF NOVEL GASTRORETENTIVE RAFT FORMING FLOATING FILM OF ATENOLOL

INDIAN DRUGS ◽  
2015 ◽  
Vol 52 (03) ◽  
pp. 15-23
Author(s):  
N Sharma ◽  
◽  
R. Awasthi
Keyword(s):  
Drug Release ◽  
Polymer Matrix ◽  
Processing Parameters ◽  
Dissolution Profile ◽  
X Ray Diffraction ◽  
Casting Technique ◽  
Floating Raft ◽  
Weight Variation ◽  
Folding Endurance

The aim of present work was to develop a gastroretentive floating raft forming film of atenolol using solvent casting technique. The films were characterized in terms of drug-excipient compatibility by FTIR, drug content, swelling, folding endurance, thermal behaviour by DSC, effect of processing parameters on drug state (amorphous or crystalline) by X-ray diffraction (XRD), and in vitro drug release profiles. The results confirm that there was no interaction between the drug-polymers and fusion of drug crystals within the polymer matrix. Results of XRD indicate partial dissolution of drug within the polymer matrix and suggested it was partly distributed in amorphous form throughout the film. The weight variation, thickness and folding endurance of films were in the range of 2.170 ± 0.05 to 2.444 ± 0.23 gm, 1.120 ± 0.032 to 1.125 ± 0.011 mm and 200 ± 5 to 400 ± 5, respectively. The pH values of the different films were between 6.8 to 7.21. After 24 h, the best selected film shows 75% and 90% of drug release in 0.1 N HCl (pH 1.2) and in phosphate buffer (pH 6.8), respectively. Based on these results it is suggested that the incorporation of drug into the hydrophilic floating film may be an appropriate strategy to improve the dissolution profile and oral bioavailability of the drug.

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