TPT July 2009

W elding: L atest D evelopments & M achinery

Electronic vacuum tube technology

A single head to cut and join TS 4.20 2D is a new plant designed to cut and join, by welding, sheets of different sizes. The plant is equipped with a single special head to cut and weld. The sheet metal minimum size is 1,000x2,000mm, while the maximum size is 4,100x2,050mm; metal thickness can be from 1mm to 8mm. It has an automatic loading system, for a high degree of automation. The production run consists of the following steps: • Sheet metal automatic loading • Sheet metal alignment and spot-drilling through a centring station • Sheet metal translation by NC control multi-process • Sheet metal blocking through a sheet pressing system • Trimming by 2d laser cutting head • Sheet edge approaching for perfect alignment • Laser welding through the same laser head, controlled by Precitec LWN system • Opening sheet pressing systems • Welded sheet metal translation Specifications of the TS 4.20 2D Sheet metal final size maximum width....... 4,000mm Sheet metal final size maximum length... 20,000mm Plant width............................................... 10,500mm Plant length.............................................. 32,000mm CNC controlled axes............................................. 15 Specifications of the loading cell Sheet metal minimum size.......2,000mm x 1,000mm Sheet metal maximum size......4,100mm x 2,050mm Minimum thickness........................................... 1mm Maximum thickness......................................... 8mm Vertical stroke........................................500mm max Horizontal stroke........................................ 5,000mm Fixed table maximum load..........................15,000kg At the end of the welding operation, the sheet metal with the new final sizes is ready to be moved to the next working stage. As with other Tube Tech Machinery plants, TS 4.20 has been designed with FEM (Finite Elements Method) structural calculation programmes, which enable the dimensional characterisation of the structures and optimisation of strain and deformation related to the applied stress. Tube Tech Machinery Srl – Italy Fax : +39 030 7256 333 Email : info@tubetechmachinery.com Website : www.tubetechmachinery.com

Emmedi is part of the international induction heating solution provider, SAET Group. The company has recently replaced solid- state HF welders from a competitor with its own HF Classic welder (electronic vacuum tube). Electronic vacuum tube technology is used in many aerospace, medical and scientific applications, among others, and continues to be in high demand.

In recent years, Emmedi has reported several tube-making clients, in central and South America, switching back to the Emmedi HF Classic welder for its reliability (reduced downtime), and ease of maintenance (the machines can run with simple home-made inductors). Emmedi HF welders have a power range up to 1,200KW with a frequency from 150kHz to 850kHz. The HF Classic welder is a class C oscillator grounded grid solution, short circuit proof, with patented ripper filter, variable frequency with a ratio 1:2 and with an MTBF of the electronic oscillator vacuum tube up to 60,000 working hours. The welding head is extremely compact, solving the space problems often experienced at the tube-mill line. Emmedi – Italy Fax : +39 011 9974328 Email : info@saetgroup.com Website : www.saetgroup.com / www.emmedi.it The system has a main control box with 12 feet of umbilical and 27 feet of water hose electrode cable, a wire feed spool capacity of 10 lb, with a maximum wire speed of 791ipm and a wire size range of 0.8mm to 1.4mm. Gullco International Ltd – Canada Fax : +1 905 953 4138

 Equipment from Emmedi, part of SAET Group

Pipe Kat ® – orbital welding system

Gullco Pipe Kat automated pipe welding system with integrated wire feeder unit incorporates a 40IPM welding carriage design with quick action mounting for ease of installation. The Pipe Kat is equipped with a linear oscillator with adjustable weave width and weld joint centreline adjustment; all electronic motorised functions incorporate jog settings.

Email : sales@gullco.com Website : www.gullco.com

 Automated pipe welding with Pipe Kat

82

J uly 2009

›

www.read-tpt.com