نتایج جستجو برای: semi solid casting

تعداد نتایج: 341241  

The effect of stir casting process on the modification of the Fe-containing intermetallics formed in a cast in-situ composite based on Al-319 matrix alloy was studied in the present work. Microstructural observations using optical and scanning electron microscopes showed that the undesirable needle-like shape of the Fe-containing intermetallics (β) and also the coarse star-like α com...

2004
Hiroto KOBAYASHI Nobuo SUMIDA Naohiro MORIYAMA

In the renewal of old process computer system of the continuous casting plant, Nippon Steel Corporation has attained cost reduction by the introduction of general-purpose PC server and OS, and middleware (NS SEMI SYSTEM) originally developed in the activity of open system solution. Also the adopting general purpose RDB to the continuous casting plant has been realized in the first time. The red...

2004
J. Sengupta B. G. Thomas M. A. Wells

Water-cooling plays a major role in extracting heat from both the mold and solidifying metal during the continuous casting of steel and aluminum alloys and is characterized by complex boiling phenomena. Heat extraction rates during water-cooling, which have strong dependence on the metal surface temperature, can rapidly change with time as the strand cools down. Consequently, uncontrolled cooli...

In this research, the rheological behavior and stability of suspensions containing Si3N4, Al2O3, Y2O3 and starch were investigated in order to use them in the starch consolidation casting of porous silicon nitride. Dolapix CE64 was used as the dispersant. Then, the effect of some parameters such as Si3N4 surface oxidation, dispersant content, solid loading and starch content on the viscosity an...

Journal: :Metallurgical and Materials Transactions 2021

AA7050 is an aluminum alloy with superior mechanical properties; however, it prone to hot tearing (HT) during its production via direct-chill casting. This study focuses on extracting constitutive parameters of the thermomechanical behavior in semi-solid state as well gaining insight failure behavior. Tensile tests were performed using Instron 5944 at solid fractions between 0.85 (550 °C) and 1...

2015
Dipal Patel

Mouth dissolving film is the most advanced oral solid dosage form due to its flexibility and comfort in use. Mouth dissolving films are oral solid dosage form that disintegrate and dissolve within a minute when placed in mouth without taking water or chewing. This dosage form allows the medication to bypass the first pass metabolism so bioavailability of medication may be improved .Mouth dissol...

Journal: :Zeitschrift fur Naturforschung. C, Journal of biosciences 1989
B Blessing R Süssmuth

The swarming phenomenon of 18 strains was tested with the intention to identify motile, swarming bacteria. Not all bacteria which are motile in liquid are able to swarm on semisolid nutrient broth, but all swarming bacteria show characteristic swarming developments, resulting in different swarming zones which could be scanned densitometrically. The densitograms are fully reproducible for the sa...

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