Gray Iron Industry Problems

Age Strengthening of Gray Iron – Kinetics Study

Kinetics of gray cast iron strengthening at room and elevated temperature (100°C, 182°C and 285°C) were studied using 100 specimens cast from one industrial heat of gray iron. Tensile strength and Brinell hardness was measured during age strengthening. Peak aging was observed at shorter times for higher temperatures and over-aging was observed at 182°C and 285°C. Statistically significant data ...

Gray cast-iron water pipe metallurgy

The results of a metallographic study of grey cast iron water pipes are reported. These pipes had been installed between 1885 and 1973 in eight different water systems. Each pipe had been extracted during scheduled maintenance or failure repairs to provide data for a larger study to produce a methodology for determining the residual life of grey cast iron pipes. This metallographic study was co...

Inverse problems in industry

Psychological problems in industry.

THiS is a title which could cover an enormous range of articles. It is difficult to know where to begin, any response is partial and it may be accounted some measure of success if more is suggested than included. Details proliferate, concepts are confused. This paper will deal with some general principles. Naturally the first step was to look for references to published work and to consult some...

Acoustic emission in drilling carbon steel and nodular gray iron

Purpose: of this paper is to investigate tool wear monitoring of drilling process by acoustic emission (AE). Design/methodology/approach: of tool wear monitoring in drilling acquires the AE signal and analyses it in the frequency domain. Findings: Tool wear in drilling significantly influences the AE signal independently of the measuring method. This influence is evidently different for various...