TPT November 2013

Technology News

Cutting, finishing and handling plant installed in Saudi Arabia

They are composed of a reduction gear properly dimensioned with “0” play gears which allow the rotation of the mandrel on which the blade is seated. The vices are lodged in two portals of large dimensions positioned close to blades in order to give the maximum stiffness to the system. They are powered by one hydraulic cylinder. The tracking group is manufactured with a rack and pinion control, with vertical axes. Motorisation: The unit is equipped with seven brushless motors controlled by digital inverter of latest generation. Functioning: In the above scheme is shown the movement of the blades; The profile of the tube is followed thanks to a dedicated software (round- square-rectangular). In this way, the reduction of cutting time and the grades of superficial finishing of the same tube are evidenced. A double vice group both at inlet and outlet side arrange the blocking of the tube during the phase of cut in order to avoid dangerous vibrations.

performance parameters are optimised. The guaranteed bar length tolerance is ±1.5mm at the maximum operating speed, although significantly higher precision is also possible. These cut-offs are fully automatic: once programmed they can operate without requiring the constant presence of the operator at the control desk; these units are pre-tested at the factory prior to shipment. The base is composed of a heavy structure in normalised welded sheet, in which linear sliding guides are seated in the superior side, for the support of the cut carriage, there is a side lodging for the rack that allows the motion of the same carriage. Shock absorbers and carriage block systems are mounted at the end of the base, for emergency, in order to avoid damages to the rack and pinion system. The carriage is composed of a normalised welded steel structure on which all tables have been worked for the support and the lodging of units for the sliding of the cut heads, the vices and the control group dimensioned for the tracking. The cut heads work in opposite ways both on longitudinal and transversal axes from the centre of the tube.

ADDA Fer Meccanica has installed an important plant for the cutting, finishing and handling of pipes for a prestigious tube manufacturer located in Saudi Arabia. The project, which took place at the end of last year, will be used to complete what is already present at the factory, and AddaFer has helped to design, construct and install a flying cut-off double blade for pipes up to 219mm (8"), an end facing, a hydro test and a handling machine. Twenty years of experience, and know- how accumulated over many years, have allowed AddaFer technicians to design solutions to precise customer specifications. With this implementation, the Asian manufacturer will be able to increase its productivity and, at the same time, the pipe quality. The mill cut-off machine has been optimised in order to make a near- perfect in-line cut that is absolutely clean and free of distortion or burr. All functions of the unit are managed by a microprocessor, which makes it possible to control the machine with a very high level of reliability, ensuring very precise cutting lengths without influencing the effective production speed on the basis of which the cut-off

Adda Fer Meccanica Srl – Italy Fax: +39 035 4946564 Email: info@addafer.it Website: www.addafer.it

Milling cut-off machine with chip conveyor

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N ovember 2013