TPT July 2012

Welding

Inflatable purge dams and weld gas analysers

inflatable dam at either end that are covered with heat- and spark-resistant double-stitched Proban ® cotton and connected with a 12" to 14" armoured stainless steel spinal hose. The spinal hose has a reactive valve to vent argon to the weld chamber. The primary dam is fitted with a primary hose to inflate the dams, a secondary hose that can be used to bypass inflation and quickly flood the weld chamber with argon, and a hose outlet for venting excess argon. Both the primary and secondary dams have a reinforced eyelet pull loop for feeding and retrieving the purge dam system inside pipe. The inflatable weld purge dam system works by connecting the primary inflation hose to the argon supply hose. Once the purge dam system has been positioned with the primary and secondary dams on either side of the weld the flow of argon to the purge dams can begin. Argon inflates

the primary dam, flows through the spinal hose and inflates the secondary dam before finally venting through the reactive valve in the spinal hose to flood the weld chamber. Once the weld chamber is fully pressurised, argon will exhaust in the vicinity of the weld and through the argon vent hose. When the oxygen level has reached acceptable levels welding can begin. Sumner has also launched two new weld gas analysers for monitoring oxygen levels in oxygen-controlled weld gas chambers. TheAr-Goneweld gas analyser quickly measures oxygen levels and provides a feedback display down to 0.01 per cent. The Argo-Naught weld gas analyser is hermetically sealed, making it air and water tight, and measures oxygen levels down to 0.1 per cent. Sumner Manufacturing Co, Inc – USA Website: www.sumner.com

SUMNER Manufacturing has launched new inflatable weld purge dams for use with stainless pipe from 50 to 350mm (2" to 14") in diameter. Inflatable purge dams can be used to quickly and efficiently create a reduced oxygen weld chamber where it is critical to avoid oxidation in the weld, for example when welding exotic metals such as stainless, duplex or titanium. “Inflatable purge dams provide welders with an inexpensive, time-saving, reusable device that not only performs a critical application of increased weld quality, but reduces argon consumption and increases weld production rate,” said Sumner president Rob Collins. “Using an inflatable weld purge dam system, purging a 6" pipe to less than 1 per cent oxygen content takes less than 3 minutes. Other solutions such as paper dams can’t match that production.” The purge dams are constructed using a primary and secondary

SALE OF 15 ERW TUBES MILLS for Welded Round, Rectangular & Square Tubes Including Oval and Handrail Profiles, Extensive Range of Tubemill Tooling for a Variety of Profiles By order of the insolvency practitioner of Industrias Garaeta, S.A.

Private Treaty Sale

Location: Madrid, Spain

Featuring:

Arrasate-Garaeta ERW tube mills (Qty 15). Diameters range: 38,1 to 101,6 mm. (1,5" to 4") Compossed of: • Expanding decoiler • Cut-off saw, welding and leveller • Accumulator • Tube mill of 7x pre-forming stands. ABB/Asea main motor drives (50-356 Kw) • AEG high frequency welding system (60-240 Kw) • Sulzer/Metco galvanising systems (up to 2005) & cooling bath • 4x Calibrating stands & 3x turkish heads • Cut-off systems (315 to 520 mm.) • Orga Pack strapping machine and Rail- driven unloading systems

In addition:

• Esmaes-Froin Slitting lines (Qty 3) from 500 to 1500 mm. width • Arrasate roll forming line. 700 mm. sheet width • Adige TS70F / HP100 Automatic tube sawing line (cut-to-length and deburring machines. (1990)

• and large quantity of tube

mill tooling and spares

For further information, please contact:

DAVID HOLTAPPELS Tel: +34 (0)672 197 540 Email: david.holtappels@go-dove.com

JOHN DAVIES Tel: +44 (0)77 8599 2088 Email: john.davies@go-dove.com

www.go-dove.com

Global Leaders in Surplus Asset Management

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J uly 2012