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The Voluntary Aluminum Industrial Partnership,(VAIP) launched in 1995 between the Environmental Protection Agency and the aluminum industry, has since succeeded in achieving dramatic reductions in perfluorocarbon (PFCs) gas emissions. The VAIP represented 18 of the 19 American aluminum smelters and represented 98% of total aluminum smelting in ...
Ferroaluminum (FeAl) is a ferroalloy, consisting of iron and aluminium.The metal usually consists of 40% to 60% aluminium. Applications of ferroaluminum include the deoxidation of steel, [1] hardfacing applications, reducing agent, thermite reactions, AlNiCo magnets, and alloying additions to welding wires and fluxes. [2]
Josef Průša was a core developer of the RepRap project who had previously developed a PCB heated "print bed". He adapted and simplified the RepRap Mendel design, reducing the time to print 3D plastic parts from 20 to 10 hours, changing to the use of two Z-axis motors to simplify the frame, and including 3D printed bushings in place of regular bearings.
The second moment of area is proportional to the cube of the radius times the wall thickness, thus increasing the radius (and weight) by 26% will lead to a halving of the wall stress. For this reason, bicycle frames made of aluminium alloys make use of larger tube diameters than steel or titanium in order to yield the desired stiffness and ...
Aleris was also among the largest aluminum sheet suppliers for semi-trailers, and the leading aluminum sheet supplier for the U.S. residential construction industry. [4] The company increased production as the automotive industry began using more aluminum than steel. [4] [16] Aleris' new aluminum body sheet facility in Lewisport, Kentucky ...
I.M. Pei, whose modern designs and high-profile projects made him one of the best-known and most prolific architects of the 20th century, has died, the New York Times reported on Thursday. He was 102.
Polyethylenimine (PEI) or polyaziridine is a polymer with repeating units composed of the amine group and two carbon aliphatic CH 2 CH 2 spacers. Linear polyethyleneimines contain all secondary amines, in contrast to branched PEIs which contain primary, secondary and tertiary amino groups.
This is a list of I. M. Pei projects. I. M. Pei (1917–2019) was a Chinese-American architect known for his creative use of modernist architecture in combination with natural elements and open spaces. During his decades of architectural work, he designed some of the world's most recognizable buildings in countries around the world.