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Email: sales@hitemp.com

8
Nov

Low Air Flow Freezes Pumps!

This post is an addendum to the post titled Air-Supply Considerations For An Air Motor On A Molten Metal Pump. The primary reason for molten metal pump freezing is “slow starts.” A slow-start is defined as slowly increasing the motor RPM. When a transfer pump is slow-started, the hot metal flows gradually into a cooler riser. …

25
Jan

Why should I use a circulation pump? Updated 25-Jan-2016

Updated 25-Jan-2016 Early Reverb Furnace Designs The reverberator (reverb) furnace has been in use since medieval times. This diagram shows a primitive reverberatory furnace of an early design. The entire furnace could be constructed from natural refractory materials such as clay. This design has a range of limitations that has led to the modern reverb furnace. For …

20
Jan

Small Pump Well? You need a Chameleon!

Pump Well Size A recent survey of installed aluminum reverb furnaces found that most included a pump well only large enough for a properly sized circulation pump. With manufacturing floor space at a premium and furnace prices increasing, it is no surprise that the pump well would be kept to an absolute minimum. There is …

24
Mar

Reduce Melt Loss AND Reduce Your Carbon FootPrint!

Surface dross generation rates are affected by several factors including: Metal Temperature – Often “dominates the equation” above 730°C (1350°F). Surface Area – Can be moderated by a heavy argon cover gas. Turbulence – Induced by flow and mechanical systems, increases effective surface area. Direct Incorporation – Mechanisms that force gas and dross below the metal …