TPT March 2011

T echnology U pdate

WU20H forming section

Quick-change mill with roll adjustment T&H LEMONT has shipped a complete Model WU20H-11 high frequency quick change, high frequency welded mill in North America.

In addition to the AutoSet automatic roll adjustment system, the mill also features the T&H Lemont Pro Display productivity display system. This system provides information, presenting key metrics such as mill speed, production levels, downtime and uptime on a large flat screen monitor. Target production rates versus actual production rates are continuously displayed. All data is logged to memory and exported to a central computer for analysis. In addition, the system will display the information on any plant PC, text message downtime alerts to supervisors and management, and email shift performance. To complement its line of complete production systems, T&H Lemont provides a variety of components and services to the tube and pipe industries. Services include tube and pipe roll design, mill alignment and operational consulting. Components offered byT&HLemont includewelders, cut-offs, entry equipment, accumulators, seam orientation stands, weld boxes, edge conditioner, bead scarfing systems, straightening systems, single point adjustment systems, dedimplers, rolls, blades, jaws and shafts.

setups. The operator will enter an ID specific to the pipe or tube size, and the screen will show nominal rim gaps in addition to actual rim gaps as entered from previous production of that size tubing. The stands automatically adjust to those locations at the touch of the screen, and each stand is represented on the touch screen. The operator can make minor adjustments from the touch screen in 0.001" increments. Once the best setup is achieved, the data can be stored as the new product specification. The system is capable of storing 100+ unique mill setups. The absolute encoders retain position information with ‘power off’ and never require a ‘zero-out’ procedure. For example, if an adjustment is made manually while the system is shut down, at ‘power on’ the system will recognise the new position. In place of expensive servo motor drives, the system features standard AC vector drives to replace manual adjustment of the driven stands. The AutoSet system includes as standard an Ethernet interface and web server for data acquisition. The mill includes a complete second set of rafts for the quick-change of tooling from one size to the next. This second set of rafts incorporates the T&H Lemont AutoSet roll adjustment system.

The tube size range of the WU20H mill is from 0.5" to 2.5" OD round tube, with wall thickness ranging from 0.03" to 0.16". Along with round tubing, the mill is designed and tooled to produce the related shapes. The mill will produce tubing at speeds up to 600fpm. To facilitate production at this speed, a T&H Lemont horizontal accumulator was included with the entry system. The horizontal accumulator will have sufficient storage to assure all end welds can be completed without interrupting mill production. The rugged turntable design will provide long service with a minimum of maintenance. To increase productivity and improve the quality of the tube, the mill is equipped with a number of state-of-the-art features. To minimise roll adjustment time, the mill features the AutoSet automatic roll adjustment system, which utilises patented absolute encoder technology to achieve highly accurate, repeatable setups. A colour touchscreen interface is used to select mill setup from a menu of product specifications, based on previously stored

T&H Lemont – USA Fax: +1 708 482 1801 Email: sales@thlemont.com Website: www.thlemont.com

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