I D
× COMMENTARYEDITOR'S PAGECOVER STORYIN THE NEWSNEWSFRONTSCHEMENTATOR + Show More
Chemical EngineeringChementator Briefs
Extracting Li Doosan Heavy Industries & Construction, Ltd. (Changwon, South…
BUSINESS NEWSTECHNICAL & PRACTICALFEATURE REPORTFACTS AT YOUR FINGERTIPSTECHNOLOGY PROFILEENGINEERING PRACTICEEQUIPMENT & SERVICESFOCUSNEW PRODUCTS + Show More

Comment

A sound way to degas aluminum melts

By Gerald Ondrey |

During casting of aluminum alloys, degassing is required to remove hydrogen from the molten metal in order to prevent porosity in the solid metal that deteriorates its properties and performance. Currently, the so-called argon rotary degassing is used, where a porous graphite rotor is submerged into the melt and Ar is purged through the rotor to the bottom of the bulk melt. Although well established, Ar rotary degassing has some drawbacks, such as high dross formation and potential damage of the graphite rotor with subsequent melt contamination; it is also energy intensive and consumes expensive Ar, explains professor Dmitry Eskin of the Brunel Center for Advanced Solidification Technology, Brunel University London (U.K.; www.brunel.ac.uk/bcast). Having proved that ultrasound degassing of molten aluminum alloys is cleaner, “greener” and just as efficient as current methods, a team of scientists from Brunel University, working within a European consortium, is developing a continuous process that will allow the degassing of much larger melt volumes and upstream from the casting mold, says Eskin. The Brunel researchers have developed a plate sonotrode — a part that transmits ultrasound to the melt — that has been shown to be more…
Related Content
A sound way to make MOFs
Researchers from RMIT University (Melbourne, Australia; www.rmit.edu.au) have demonstrated a “green” technique that can produce customized metal organic framework (MOF)…
Embedding active enzymes into plastics
Researchers at the Fraunhofer Institute for Applied Polymer Research (IAP; Potsdam-Golm, Germany; www.iap.fraunhofer.de) have developed a process for embedding active…

Chemical Engineering publishes FREE eletters that bring our original content to our readers in an easily accessible email format about once a week.
Subscribe Now
Steel Belt Units for Medical Membranes
Upstream Oil & Gas: Automation intelligence from wellhead to distribution
Video - CoriolisMaster
Video - Do you really need a thermowell?
The influence of IIoT in the dewatering process step of pigment production

View More