Stud welding - GIF

[Altair]

Stud welding




Previously:

Induction welding a ring - GIF
Pressing and welding a bearing cage - GIF
Rebar bending and welding machine - GIF
Arc welding slow motion - GIF
Tack welding steel coil ends - GIF

[nova_robotics]

They're called Nelson studs in Canada. I'm not sure if the ones in the video above are Nelson brand, but they're very close. They work good.

[bob47907]

Um, ok. Can we pretend that I don’t know what this is for, and someone might kindly explain? Tnx!

[nova_robotics]

Um, ok. Can we pretend that I don’t know what this is for, and someone might kindly explain? Tnx!

They're pretty versatile. You can get threaded ones. I think there are probably some other styles. In the video above they're installing Nelson Studs as a form of concrete embeds like rebar. Those little mushroom caps will hold the concrete tight against the plate and keep it from separating after pouring.

[tachetailleur]

You can get "domestic" size versions of these for say 2-8 mm diameters but they are still quite expensive. For these smaller size studs they use a capacitor discharge method, no ferrule needed, often sold as car dent puller systems. You can search for "cdi stud welding". It's possible to weld a stud to a fairly thin plate with no marks on the opposite side. I could have used one for a recent project with stainless sheet! I believe they can do mild steel, stainless, aluminium and brass studs.