wiredinUSA March 2013

INDEX

Plasma annealer

direction, material’s susceptibility to cold working and its resistance to surface cracking. Ion bombardment or ion sputtering on the material surface results in fine dry surface cleaning and surface oxide removal, of particularly benefit to applications with demanding surface requirements in sectors such as medical, welding or aerospace. Unlike the traditional tube furnace, the plasma annealer can cold start production in just a few minutes and can be stopped immediately. This avoids lengthy heating-up andcooling-down times and theassociated energy costs of a conventional furnace. The gas cooling section in the plasma annealer has a closed loop design to minimize purging gas consumption. improving the Emirates Steel, producer of high quality rebar, wire rod and heavy sections, has now enhanced its facility in the Industrial City of Abu Dhabi to manufacture 40mm reinforcing steel bars to meet growing demand in the region. Emirates Steel’s range includes rebar and rebar in coil, wire rod, and hot rolled structural steel sections. “We are happy to announce that we have added a new 40mm size to our existing range of 8mm to 32mm rebar,” said Engineer Saeed G Al Romaithi, CEO of Emirates expands to 40mm

A new plasma annealer, designed for stainless steel and nickel alloy wire, tube and rope and with cross-sections from 20mm 2 and below, is available from Plasmait. This new unit is said to offer higher continuous annealing speeds for stainless steel and nickel alloys – over 15m per second for fine wire sizes. Annealing can be performed in-line with drawing or rolling, substituting multiple lines of a traditional tube furnace.

Efficient energy coupling in the plasma process allows for a compact design of the plasma chamber and results in high-energy conversion efficiency. Annealing power is controlled accurately and instantaneously via the power supply. Rapid heating and reduced recrystallization timeresultsinfinegrainsizewithuniformcrystal structure in the longitudinal and transversal

wiredInUSA - March 2013 78 PRODUCTS - MACHINES TECHNOLOGY

wiredInUSA - March 2013

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