Non Mech Join to Aluminum
in [Design]
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From: George Herold on 26 Apr 2010 10:54 On Apr 26, 3:55 am, Robert Baer <robertb...(a)localnet.com> wrote: > Ken Dunlop wrote: > > What are the alternatives for applying an earth lead to a bare > > aluminum chassis that do not require a mechanical fitting? > > > Brand names of products would be appreciated, if possible. > > > Ken Dunlop > > One can solder - even using tin-lead, but it alloys like crazy and > can leave a "dent" in the surface where the solder was employed. > One can weld; spot weld or standard weld. Hi Robert, Have you actully used the aluminum solder and fluxes with any success? I remeber years ago trying to get the 'aluminum solder and flux' to wet to a piece of aluminum.. It was a complete failure. Is the aluminum alloy a issue? George H.
From: richard on 26 Apr 2010 11:04 Ken Dunlop wrote: > What are the alternatives for applying an earth lead to a bare > aluminum chassis that do not require a mechanical fitting? > > Brand names of products would be appreciated, if possible. > > Ken Dunlop I still have a partially used reel of Alu-Sol that I bought probably in the '70's. It worked well for soldering to Aluminium, though of course you would need a high wattage iron to solder to a chassis. Alusol seems to be available still - for example http://www.multicoreaustralia.com.au/index.html?lang=en-us&target=d13.html&lmd=38905.645023
From: whit3rd on 26 Apr 2010 14:55 On Apr 25, 5:36 pm, kendun...(a)optovex.com (Ken Dunlop) wrote: > What are the alternatives for applying an earth lead to a bare > aluminum chassis that do not require a mechanical fitting? "Aluminum chassis" means a component that accepts all manner of mechanical fittings. So, why do you want to not use a mechanical fitting? Rivet, weld, self-tapping screw are possibilities. Simple contact will NOT work (aluminum oxide is too good an insulator). I've used some kinds of fittings that take an electrode paste that inhibits the insulator growth from atmospheric oxygen.
From: Jim Yanik on 26 Apr 2010 17:18 Jim Thompson <To-Email-Use-The-Envelope-Icon(a)On-My-Web-Site.com> wrote in news:p9o9t592uafupj4aclq86k5d1si1khll0n(a)4ax.com: > On Mon, 26 Apr 2010 00:36:34 GMT, kendunlop(a)optovex.com (Ken Dunlop) > wrote: > >>What are the alternatives for applying an earth lead to a bare >>aluminum chassis that do not require a mechanical fitting? >> >>Brand names of products would be appreciated, if possible. >> >>Ken Dunlop > > Weld? And there are solder preps that allow soldering to aluminum. > > ...Jim Thompson those are garbage. I've tried solder-it Aluminum solder paste,and a commercial aluminum soldering flux. even welding is not simple. -- Jim Yanik jyanik at localnet dot com
From: Jim Thompson on 26 Apr 2010 17:52
On Mon, 26 Apr 2010 16:18:10 -0500, Jim Yanik <jyanik(a)abuse.gov> wrote: >Jim Thompson <To-Email-Use-The-Envelope-Icon(a)On-My-Web-Site.com> wrote in >news:p9o9t592uafupj4aclq86k5d1si1khll0n(a)4ax.com: > >> On Mon, 26 Apr 2010 00:36:34 GMT, kendunlop(a)optovex.com (Ken Dunlop) >> wrote: >> >>>What are the alternatives for applying an earth lead to a bare >>>aluminum chassis that do not require a mechanical fitting? >>> >>>Brand names of products would be appreciated, if possible. >>> >>>Ken Dunlop >> >> Weld? And there are solder preps that allow soldering to aluminum. >> >> ...Jim Thompson > >those are garbage. What I had success with was a block of "something" (flux-laden abrasive?) that you scrubbed off the oxide at the point you wanted to solder, then, with your 300W iron you finished the connection :-) >I've tried solder-it Aluminum solder paste,and a commercial aluminum >soldering flux. > >even welding is not simple. Welding is easy if your spot welder has enough ooooooomph ;-) ...Jim Thompson -- | James E.Thompson, CTO | mens | | Analog Innovations, Inc. | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | Phoenix, Arizona 85048 Skype: Contacts Only | | | Voice:(480)460-2350 Fax: Available upon request | Brass Rat | | E-mail Icon at http://www.analog-innovations.com | 1962 | The only thing bipartisan in this country is hypocrisy |