August 23, 2006 -- CORE Furnace Systems, Pittsburgh, commissioned its digital COREArc™ electrode regulation system The Harrison Steel Casting Co., in, Attica, IN. Its one of several recent commissionings of the new technology, and according to Core early results indicate the development is a success.

At Harrison Steel Casting, the project involved installing COREArc digital regulators on both Lectromelt electric arc furnaces to replace the existing analog regulators. Harrison Steel had experienced trouble striking the arc with one of the analog regulators. The operators had to adjust the electrodes manually during the first moments of striking.

With the new digital regulator striking the arc is no longer a partially manual process, and it offers a more responsive algorithm for removing the electrodes during cave-ins, and the system is capable of developing code for functions, such as “finding the arc” during arc ignition. Core Furnace reports that the new regulators have been providing “continuous reliable service” since the restart.

Core Furnace also supplied Harrison Steel Casting with customized HMI screens that relate to specific applications. According the Harrison Steel electrical engineer Jeremy Allyn, “Making adjustments are more intuitive and faster with the COREArc™ system.”