Yesterday I was at a machine shop and saw a large stainless plate with copper tubing wound around the surface and appeared to be tig welded. The boss of the shop told me it was tig welded with silver solder. It looked like a very fine weld you would normally see stainless to stainless. When I got home I tried it on some copper tube and hot rolled steel since I didn't have any stainless steel. It looked really nice but I put some pressure on it and it didn't stick well at all on the steel and came off from just a little pressure. It stuck very well on the copper tubing. It was almost pure silver I was using. I would immagine a respirator would be mandantory if using silver solder with cadium in it.Has any one done this before and what is the proper technique to make it stick on the stainless. The stainless plate I saw was about one half inch thick. The tubing was about 3/8 diameter.
Reply:You didn't get the stainless hot enough. It's pretty much the same technique as soldering with oxy-fuel, except you use a tig torch as the heat source instead. Try not to melt the base metals. I think the reason for doing it this way is that it can be done without flux because of the inert shielding gas.
发表于 2021-9-1 00:14:15