 ArtMetalsocial networking for the metal arts |
|
copper and alluminium soldering
PRASHANT SINGH -
Monday, December 29, 2008 - 7:23am
soldering technique we have two metal first is alluminium sheet very thin and second metal is copper strips .5 mm thik , how we solder them. normal soldering wire and paste is not useful for it. ..thanks for the help .. prashant Singh  Singh, There is no really
Rich Waugh -
Tuesday, December 30, 2008 - 6:34pm
Singh, There is no really good way to solder coppre to aluminum, if that is what you are asking. There are special solders sold for soldering aluminum, but they only just barely work for soldering aluminum to aluminum, and only if the aluminum has been sanded to remove oxides and cleaned with acetone. Epoxy would work as well and be stronger. Fusion welding is not possible due to the widely disparate melting points of the two metals. The most satisfactory ways to bond aluminum to copper are by friction welding or explosion welding. Because of aluminum's high affinity for oxygen, it rapidly forms aluminum oxide at the surface and that oxide interferes with soldering, as it requires "wetting" of the surface for adhesion. Both friction welding and expolsion welding utilize extreme pressure to achieve a solid-state diffusion bond that is highly cohesive. If you told us what you are trying to achieve that requires joining these metals, perhaps we could offer some suggestions for alternate methods.  ECU's
visitor -
Monday, August 22, 2011 - 6:01pm
we work on industrial ECU's for the Military, we recently bought 27 Air Rover ECU"s and they have a copper compressor line and a aluminum coil held together by a compression fitting. we have had 7 out of 27 fail in the past yr and we can get no good answers, what do you suggest? we are all out of ideas. SFC Smith. FT JACKSON SC/8034098679/8436181969/ thomas.lee.smith@us.army.mil Sarge, Your problem is
Rich Waugh -
Monday, August 22, 2011 - 7:00pm
Sarge, Your problem is bimetallic galvanic corrosion, I would guess. Possibly aggravated by unequal coefficients of thermal expansion between the two dissimilar metals. If you could get a non-conductive coupling between the two it should cure the problem. Other than that, you may have to change the type of coupling to a screw union that will accept a non-conductive interface piece. This is a bit out of my real purview so I'd check with a real hotshot HVAC man or perhaps put in a call to the engineers at some of the big AC companies like Trane, Lenox, etc. Rich  copper soder
lin -
Wednesday, December 31, 2008 - 10:07am
I soder copper to copper by using 60/40 soder and flux from my stained glass supplier. I am adding glass to my sculptures and wrap the glass edges with copper foil. I don't know if that technique would work for what you are doing but you might try it. I have also used it to attach copper foil wrapped glass to steel, but it is not as strong. Lin soldering
visitor -
Wednesday, December 23, 2009 - 8:58am
you need to use a special solder znic alloy. thats what companies use. I don't know where to get it. Copper and aluminum can be welded/soldered together
visitor -
Thursday, October 7, 2010 - 6:07am
There is a company that makes HTS-2000 and also a company that makes dura fix brazing rod. Both of these procucts are able to join these two metals for a very high strength bond. All you need is a propane or mapp gas torch a SS wire brush and a couple of these brazing rods. It is very simple and very easy.  soldering copper to aluminum?
Stefani -
Saturday, November 27, 2010 - 7:12pm
What company. Help a girl out, not that I plan on trying it right away. It would be good to know for future endeavors. Think you'll find the hts
Will Jones -
Sunday, November 28, 2010 - 11:52am
Think you'll find the hts 2000 and similar products on dear old ebay...they're on the u.k. site anyway. look for "low temperature alluminium welding/soldering rods" |
|
ArtMetal
The copper can be soldered
The copper can be soldered or brazed (same thing) with a torch, paste flux and silver solder, not the plumber's solder from the hardware store. It would be easiest to devise cold connections for the aluminum.
marilyn