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INFORMATION LEAFLET
Silicone disc purging system 120
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Weldwide silicone disc systems type 120 can be used when customers are welding dairy tubes, schedule pipework and all other kinds of cylindrical vessels. They are available for pipe diameters ranging from ¾” to 12”.
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GENERAL
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The Silicone Weld Purge systems can be pushed and pulled through pipe lengths without friction or resistance. Once positioned, the silicone purge systems forms an air tight seal inside the pipe and allows the customer to only purge a small contained volume inside the pipe between the purge dams. This will significantly reduce the purge time and amount of inert purge gas used. A 6” diameter pipe will usually be purged to an oxygen content of < 0.1 % in under 3 minutes using a Weldwide Silicone disc purging system.
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For this reason, weld purge systems repeatedly demonstrate to customers a fast pay back through gas savings and increased production rates with zero weld failures attributed to gas shielding of the weld root. Since the dams of the silicone purge system isolate a small volume inside the pipe fabricators immediately begin to use less gas before it is safe to start welding and can therefore demonstrate to their customers that they are achieving a lower carbon footprint.
Weldwide Solutions Limited Information Leaflet Silicone Disc Purge System 120
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OPERATION OF A SILICONE DISC PURGE SYSTEM
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The silicone disc purge system 120 is a modular system. The basic spinal unit can be connected to silicone dams of different sizes, making it suitable for purging of a range of pipe diameters when fitted with the appropriate disc sizes. Inert purging gas supply can be directly connected to the basic unit of the system and will enter the purge volume through access openings. The silicone discs are fitted with exhausts which allow efficient oxygen removal from the purged pipe.
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The Silicone disc purge system type 120 is designed for welding of straight pipework. Weldwide Solutions Limited will be happy to supply you with a suitable system if you require purging around a bend.
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Weld Purge systems will allow a constant flow rate of inert shielding gas of up to 20l/min to be maintained during welding to avoid oxygen penetration and thus oxidation of the weld. After completion of welding and once the weld has cooled below oxidation temperature the Purge system can be easily removed from the pipe.
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NOTE: The Weldwide Solutions Weld Gas Analyser can be directly connected to Weldwide silicone disc purge systems which allows you to closely monitor the progress of the purge process. For perfect welding results Weldwide Solutions recommends to always use Weld Purge systems together with the Weld Gas Analyser.
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If you are planning to efficiently and perfectly weld larger diameter pipes please inquire about our large-size purge system options!
Reduce volume close to the weld requiring purging Shield the Weld Root eliminating oxidation Allow the welder to adjust the purge gas pressure against the weld root to achieve a desired weld profile on the internal bore Cut down on inert shielding gas required Help reduce customers’ Carbon Foot Print Allow customers to increase weld production rates Reliably eliminate weld defects associated with purging
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ADVANTAGES OF USING A SILICONE DISC PURGE SYSTEM
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Weldwide Solutions Limited Information Leaflet Silicone Disc Purge System 120
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APPLICATIONS FOR SILICONE DISC PURGE SYSTEMS Â
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Silicone Disc Purge Systems can be used whenever welding stainless steel and reactive metal pipework. They are also suitable for purging autogenous weld fit ups as well as scheduled pipework that requires a gap between two bevelled pipe ends.
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Weld Purge Systems permit the fabricator to introduce a higher gas flow rate, if they have a wide gap between the pipes for the root pass, thus preventing the likelihood of oxygen and other atmospheric gases entering the shielded and purge environment before the root pass is completed.
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Silicone disc purge systems ensure an air tight seal inside the tubular system so no contamination can occur to the weld during the hot pass and subsequent weld passes.
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Contact us Telephone: +44 (0)1554 700 350 Email: darren@weldwidesolutions.com Fax: +44 (0)1554 754 276 http://www.weldwidesolutions.com
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Weldwide Solutions Limited Information Leaflet Silicone Disc Purge System 120
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