The results of a computational study of feeding and the promotion of feeding by yield improvement techniques is presented. The computer simulations were performed using a commercial solidification software package examining the simple plate-like geometries addressed in the SFSA feeding rules. Solidification criteria from the computer model were used to develop simulation determined feeding dist...

M. Górny, R. Dańko, M. Holtzer. AGH University of Science and Technology, Faculty of Foundry Engineering, Kraków, Poland This article addresses the effect of mold filling and wall thickness on the flake graphite layer in ductile iron. The research was conducted for castings with different wall thickness (3-8 mm) and using molding sand with furan resin. A thermal analysis has been performed alon...

Abstract The structural stability of ausferrite in thin-walled Austempered Ductile Iron (ADI) castings with 5 mm wall thickness is compared to a reference casting 25 thickness. and were first austenitized between 850 925 °C, then austempered 250 380 °C. X-ray diffraction (XRD) investigations changing temperature performed − 260 up + 450 °C investigate the change phase fraction, lattice paramete...

An entrainment defect (also known as a double oxide film or bifilm) acts void containing an entrapped gas when submerged into light-alloy melt, thus reducing the quality and reproducibility of final castings. Previous publications, carried out with Al-alloy castings, reported that this trapped could be subsequently consumed by reaction surrounding volume negative effect defects. Compared Al-all...

The Pedobacter sp. Hv1 strain was isolated from the medicinal leech, Hirudo verbana, mucosal castings. These mucosal sheds have been demonstrated to play a role in horizontal symbiont transmission. Here, we report the draft 4.9 Mbp genome sequence of Pedobacter sp. strain Hv1.

SUMMARY This Report describes an investigation into the tensile and torsional properties of DTD 5025 magnesium alloy castings. Strength and stiffness values are given, and the variation of these parameters between different batches and manufacturers is shown. The effect on mechanical properties of long and short term temperature environments is mdwated.

The fatigue strength offerritic ductile iron, Grade EN-GJS-400-18U-LT. was determined for large section castings measuring 4 by 24 by 24 inches. Fatigue testing was conducted in bending fatigue in order to determine the influence of surface conditions on fatigue strength. Test specimens with various surface conditions were evaluated, including notched and un-notched specimens, as well as those ...

The macrosegregation behaviors of Al-Sn-Cu ternary immiscible alloy castings and their effects on mechanical tribological properties were investigated. results demonstrate that Sn Cu segregate in the casting simultaneously, mass fraction two elements has a “U” shaped distribution. Significantly, positive negative segregation occur casting, with appearing top lower surfaces remaining surfaces, 1...