Quenching
In materials science, quenching, a type of heat treating, is the rapid cooling of a workpiece to obtain certain material properties. It prevents low-temperature processes, such as phase transformations, from occurring by only providing a narrow window of time in which the reaction is both thermodynamically favorable and kinetically accessible. For instance, it can reduce crystallinity and thereby increase the hardness of both alloys and plastics (produced through polymerization).
In metallurgy, it is most commonly used to harden steel by introducing martensite, in which case the steel must be rapidly cooled through its eutectoid point, the temperature at which austenite becomes unstable. In steel alloyed with metals such as nickel and manganese, the eutectoid temperature becomes much lower, but the kinetic barriers to phase transformation remain the same. This allows quenching to start at a lower temperature, making the process much easier. High speed steel also has added tungsten, which serves to raise kinetic barriers and give the illusion that the material has been cooled more rapidly than it really has. Even cooling such alloys slowly in air has most of the desired effects of quenching.
Quench (company)
Quench USA Inc is a water technology company that rents and services filtered water coolers. According to the site, over half of the Fortune 500 are customers. Zenith International lists Quench as a leading distributor in the point-of-use (POU) market along with Macke Water Systems and Nestle Waters. Quench is an independent operating company of AquaVenture Holdings™. Quench is headquartered in King of Prussia, Pennsylvania. Quench was named an Online Marketing Success Story in Google's 2011 Economic Impact Report. In 2008, Quench was named a top 25 most successful startup by Businessweek.
Products Description
Filtered water systems are plumbed into a building's water supply and purified at the last possible point before consumption. Filter water coolers and ice dispensers typically use carbon filtration, UV water disinfection and/or reverse osmosis to purify drinking water.
Acquisitions
In March 2012, Quench purchased Aqua Perfect of Arizona LLC. In July of 2105 Quench acquired Region-X LLC a Massachuetts company that provides services related to high purity water systems
Quench (band)
Quench were an English rock band based in Cheltenham, Oxford and Bristol. The band toured the UK and Europe and performed at festivals, including the UK's Greenbelt festival.
The band's Christian faith impacts their music and performances, making them a "four piece rock band with solid mainstream appeal" according to independent industry magazine The Hit Sheet, which featured Quench's Bring The Summer In on one of their compilation CDs.
History
Early years (1997–2000)
Quench grew out of Christian folk band Why?. Singer Jamie Hill and drummer Andy Davis then started a new rock project without the folk influences of Why? and joined by guitarist Kevin Sefton and bassist Ron Knights, they formed Quench (originally under the working title of 4 Real).
The Quench EP (2001)
The Quench EP was released shortly after the band signed to Elevation Records, the rock subsidiary of ICC Records, who signed Quench on the strength of their early showcase gigs in April 2001.
In 2002, guitarist Kevin Sefton left the band and Mark Hamilton was recruited to replace him. Mark brought a harder edge to the band which drew them away from their early Punk/Pop influences into a more Emo direction, drawing influence from bands like Jimmy Eat World, Lostprophets and Finch in their new sound.
Polar
Polar may refer to:
Geography
Places
- Polar (community), Wisconsin, unincorporated community in Langlade County, Wisconsin, United States
People
Mathematics
- Polar cone
- Polar coordinate system, uses a central point and angles
- Polar curve (a point and a curve), a generalization of a point and a line
- Polar set, with respect to a bilinear pairing of vector spaces
Malta Polar
Malta Polar may refer to:
Polar (Research Refrigerator for ISS)
Polar was designed and developed by University of Alabama at Birmingham (UAB) Center for Biophysical Sciences and Engineering (CBSE) for NASA Cold Stowage. Polar was designed as a single mid-deck locker equivalent payload to store scientific samples on-board ISS and in transport to/from ISS via Spacex Dragon (spacecraft) or Cygnus (spacecraft). Polar operates between +4 °C and -95 °C.
Description
Additional Cold Stowage
GLACIER is one of multiple units available for storage on the ISS and/or transportation to and from the ISS.
- +4 °C to -80 °C
- +48 °C to -20 °C
- +4 °C to –160 °C
Podcasts:
