TPT July 2009

T echnology U pdate

New precision slot quench system

sudden mill stoppage. With this in mind, the company included an electronic circuit to move the cutter out of the tube area as soon as the power is cut off. The vice clamp also releases, to allow for movement of the tube due to mill running inertia. Changing the clamping jaws to allow for a different size of tube can be completed within two minutes. Maximum material tensile strength is 600 Newton per mm 2 , with a yield point between 200 and 500 Newton per mm 2 . The machine can accommodate thicknesses from 1 to 5.5mm and cut lengths from 5 to 12m. ITL Industries Limited – India Fax : +91 731 2721110 Email : itlindia@sancharnet.in Website : www.itl.co.in supplies along with multiple full body coils and automated centring stands for quick and efficient changeovers. The power supplies are configured through a software- modelling package that helps improve heating efficiency through varied power output. Thermatool’s heating and quenching systems are helping to advance the heat treat industry toward improved material composition and a more lean process. Thermatool Corporation – USA Fax : +1 203 468 4281 Email : thermatool@ttool.com Website : www.thermatool.com

ITL Industries Limited is a metal cutting solution provider offering a wide range of band saw machines, power hacksaw machines and CNC circular saws with HSS and TCT cutters. The company has designed, developed and manufactured a flying cold saw cut off (patent applied) for high-speed mill operation up to 150m/ min, with 25 cuts per minute. The machine uses HSS as well as carbide tipped saw blades, to cover a full range of general and special purpose steels used for tube manufacturing. Features include low maintenance, low vibration and noise, low power consumption, and saw blade protection in case of power failure. The machine is suitable for retrofitting in existing mills. The shuttle runs on pair of linear motion bearings with the help of a servomotor coupled to a backlash free reduction gearbox, which runs pinions on a stationary rack. The servomotor is able to travel the 3m return distance in 1 second. The shuttle is manufactured from high alloy aluminium plates, which are light but very strong, to reduce the dead weight of the shuttle. The cutting head gearbox and motor are also manufactured from alloy aluminium casting, and move on a set of four pairs of linear motion bearings. The cutting head has been designed to accommodate HSS and TCT saws for cutting ordinary steel to high tensile steel material. The work table has been designed in such a way that on the return stroke jaws do not scratch the tube, because both the jaws are moving away from the tube axis. Thermatool Corporation has announced the successful commissioning of a new precision slot quench system along with multiple induction pre-heaters for austenitising and tempering operations. These high performance modular slot quench and induction-heating systems operate on an induction/gas quench and temper line at Timken Steel. The quench system is designed such that it can process two size bands for pipe and bar from 4" up to 9". The quench module is rafted and motorized, thereby

The holding mechanism can be adjusted very quickly in Y-axis or Z-axis to align with the tube axis. All the linear bearings, ball screw and rack and pinion are continuously lubricated through a prefixed program as recorded in the PLC. For effective use of the saw blade and to improve tool life, a special program has been introduced which allows slow entry and slow exit while cutting the tube to match the desired number of cuts per minute on-line. When designing the machine, ITL took into consideration the problem of unexpected power failure, which can cause saw blade breakage during mill operation due to enabling the producer to change quench ring diameters automatically. Complete with variable flow pumps and a symmetrical high impingement quench spray, the precision quench equipment offers the customer opportunities for enhanced metallurgy and straightness. Thermatool produces a wide range of quench systems and will size each application based on validated modelling techniques. Timken’s induction preheating sections utilise Thermatool’s rugged VIP power

Flying cold saw cut off

 High speed cut off car

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J uly 2009

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