The last century has seen technology continuously push the design of faster, higher quality rolling mills to increase productivity and efficiency. However, these speed increases have often been accompanied by mechanical vibrations, generally referred to as "chatter", which cause periodic, transverse bands of light and dark appearance across the strip and in some cases, a matching thickness variation. At present the only reliable remedy for chatter is to reduce mill speed and increase the frequency of backup roll changes, resulting in more delays, lower productivity and significantly increased costs.

Hatch IAS provides a spectrum of products and services to assist mills with vibration attenuation, including vibration diagnosis and monitoring products and services and devices for vibration attenuation. Vidas monitors, analyses and records mechanical vibration on a rolling mill. The system can provide an early warning system to prevent chatter or rumble conditions on a rolling mill. It can also provide a continuous vibration logging facility for troubleshooting mill and roll grinder vibration problems and for correlating with changes in operating conditions such as roll changes. The Vibration Inhibiting Piston (VIP) is a passive vibration device which replaces one or more of the existing pistons within the mill and attenuates third octave mill chatter, increasing mill speed and throughput.

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RESEARCH PAPERS - Hatch IAS engineers are well known presenters of technical papers internationally. Abstracts may be read online..

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