Quiescent transfer of melts
a melt and melt technology, applied in the field of melt melt transfer, can solve the problems of low fatigue resistance of cast components, poor mechanical properties, and often introduce defects into liquids, and achieve the effect of efficiently cleaning the melt from inclusions
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[0033]It is necessary for the holding furnace to operate at a substantially constant level of liquid metal. This is achieved by ensuring that the rate of supply to the unit and rate of delivery from it are, on average, sufficiently well matched so that the change of level on additions to or deliveries from the unit cause the surface level to change by only relatively few millimeters. This is easily achieved by monitoring the height of metal in the holding furnace, and adjusting the rate of melting from the melting furnace accordingly. The task of maintaining the constant height is facilitated if the area of the melt in the holder compared to the volume changes is sufficiently large.
[0034]It is desirable that this furnace is electrically heated by elements in the roof (although fuel-firing inside heater tubes is of course possible). This has the benefit of creating a positive vertical temperature gradient in the liquid bath that will assist to stabilize the melt against convection. I...
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