Help with Nickel Alloy Welding - Huntingdon Fusion Techniques
06 Jul 2012
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Nickel and its Alloys: Wide Range of Applications
- from high temperature oxidation and creep resistance service to aggressive corrosive environments and very low temperature cryogenic applications. The Nimonic and Monel alloys are the most common proprietary metals, but the total range is extensive, covering nickel contents from 30% to 99%.
Ensuring Contamination Does Not Occur
All the conventional welding processes can be used to weld nickel and its alloys and matching welding consumables are available. Care must be taken however throughout the welding process to ensure that contamination does not occur—the nickel alloys are particularly susceptible to cracking and porosity if the welding environment is not properly controlled.
Main Sources of Contamination
The most serious cracking problem with nickel alloys is hot cracking in either the weld metal or close to the fusion line in the HAZ with the latter being the more frequent. The main source of this problem is sulphur. Both weld metal and HAZ cracking are generally the result of contamination by grease.
Argweld®; PurgEye® 300 Nano Weld Purge Monitor™
The Argweld® PurgEye® 300 'Nano' Weld Purge Monitor™ has been specifically designed as a very low cost, basic entry level version of the Argweld® PurgEye® 300 for indicating low oxygen levels in inert gas for weld purging down to 10 parts per million (ppm).
'New' unique lifetime sensor, virtually no maintenance, no 'wet cell', no need to constantly calibrate, integrally mounted sensor, large alpha numeric display, small and lightweight, this ultra-low cost instrument accurately measures from 1000 to 10 (parts per million).
PurgEye® a family range of Weld Purge Monitors™.
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Contact details are as follows:
Huntingdon Fusion Techniques Ltd, Stukeley Meadow, Burry Port, SA16 0BU United Kingdom
Telephone: +44 (0) 1554 836836 Facsimile +44 (0) 1554 836837
E-mail: hft@huntingdonfusion.com
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