Nelson NCD+ - User Manual

Questions and Answers

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ekeithJul 27, 2025
What to do if I have a hot weld on my Nelson Welding System?
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  William SweeneyJul 27, 2025
  If you're experiencing a hot weld, characterized by weld failure at a low value, excessive weld flash and splatter, and a potentially undercut weld base, it indicates that too much heat was available. You can decrease weld heat by: increasing spring pressure to speed up the weld time, decreasing voltage to reduce overall energy, and checking stud ignition tips to ensure they are not too long.
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Andrew MurphyAug 6, 2025
How to fix cold plunge in Nelson NCD+?
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  Meagan HowardAug 6, 2025
  A cold plunge, identified by inconsistent weld strength and a shiny, mirror-like appearance on the fracture surface, occurs when the stud contacts the base material after the molten weld metal has started to solidify. This issue can be addressed by increasing spring pressure to increase drop speed, decreasing voltage to reduce overall energy, and ensuring the combo cable is installed (contact mode only) or removed (gap mode) to reduce weld energy.
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imasonAug 16, 2025
How to troubleshoot a cold weld on a Nelson NCD+?
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  leonardnicholasAug 16, 2025
  A cold weld, indicated by weld failure at a low value, absence of weld flash or splatter, and an incompletely melted weld base, suggests insufficient heat. To increase weld heat: reduce spring pressure to lengthen weld time, increase voltage to increase overall energy, and inspect stud ignition tips to ensure they are not too short.