The day will be even nicer after you read this one:

  <https://www.facebook.com/home.php#>
  A neutron walked into a bar and asked, "How much for a drink?" The
bartender replied, "For you, no charge."


Inge


On 14 March 2012 11:02, Sylvain Kaufmann <[log in to unmask]> wrote:

> Hi Dave and Netters,
>
> Thank you very much for your feedback and laughs.
>
> Well, this was my guess, one of those real pain to put in place.
>
> So, let me book the lab and try to change margarine into butter for
> smoothest operations...
>
> Thanks again and have a nice day.
> Kind regards
> sylvain
>
>
> -----Original Message-----
> From: TechNet [mailto:[log in to unmask]] On Behalf Of Whittaker, Dewey
> (EHCOE)
> Sent: mardi 13 mars 2012 18:51
> To: [log in to unmask]
> Subject: Re: [TN] Soldering manganin wires?
>
> Well, there's no margarine for error.
> Dewey
>
> -----Original Message-----
> From: TechNet [mailto:[log in to unmask]] On Behalf Of Inge
> Sent: Tuesday, March 13, 2012 10:14 AM
> To: [log in to unmask]
> Subject: Re: [TN] Soldering manganin wires?
>
> manganin ..sounds as difficult as to solder margarine wires
>
> Inge
>
>
> ----- Original Message -----
> From: "David D. Hillman" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Tuesday, March 13, 2012 6:00 PM
> Subject: Re: [TN] Soldering manganin wires?
>
>
> > Hi Sylvain - we have a couple of applications where we solder to manganin
> > wire and let's just say it not a fun task! You can use tin/lead solder
> but
> > the key is that you need a highly highly aggressive flux to deal with the
> > manganin surface oxides. I recommend you look at fluxes that are designed
> > for soldering stainless steel or magnet wire - Indium,  Kester, Alpha,
> > etc. all of the solder suppliers offer flux formulations you can choose
> to
> > use. I would also recommend that the flux chemistry be a water soluble
> > formulation to aid in the removal of the flux residues/nonactivated flux
> > to avoid possible corrosion issues due to inadequate cleaning. Good
>  luck.
> >
> > Dave Hillman
> > Rockwell Collins
> > [log in to unmask]
> >
> >
> >
> >
> > Sylvain Kaufmann <[log in to unmask]>
> > Sent by: TechNet <[log in to unmask]>
> > 03/13/2012 09:18 AM
> > Please respond to
> > TechNet E-Mail Forum <[log in to unmask]>; Please respond to
> > Sylvain Kaufmann        <[log in to unmask]>
> >
> >
> > To
> > <[log in to unmask]>
> > cc
> >
> > Subject
> > [TN] Soldering manganin wires?
> >
> >
> >
> >
> >
> >
> > Dear TechNetters,
> >
> > One of our customer is designing and prototyping some cryogenic
> > temperatures measurement assemblies.
> >
> > As part of the material used, the "temperature sensors" are supposed to
> be
> > connected to the PCB with manganin wires.
> > The PCB is a flex with ENIG finish.
> >
> > I never heard about this material before and found it was an alloy mixing
> > 86% copper, 12% manganese, 2% nickel.
> >
> > I checked the TechNet archive as well as the internet, but was not
> > successful in finding guidelines about soldering those wires.
> > I found some words on NPL website about copper-manganese alloys : quote
> > from website -> Joints between the copper manganese alloys and copper are
> > made most effectively by welding in an atmosphere of argon, and by hard
> > soldering if welding is impracticable.
> >
> > On the other hand, I found some papers from some physicists or some
> > hobbyist video stating that manganin can be soldered with regular
> tin-lead
> > solder (well, at least they did it on their proto apparatus)...
> >
> > Provided I can find only very few info and mostly not consistent, I turn
> > my eyes on you experts out there.
> >
> > Does anyone have experience in soldering this material?
> > Or more precisely, is this material solderable with some regular
> > electronic solder alloys?
> >
> > As usual, thanks a lot in advance for your valuable input.
> > Kind regards
> > sylvain
> >
> --------------------------------------------------------------------------------------------------
> > Sylvain Kaufmann
> > CERN - European Laboratory for Particle Physics
> > Dpt : TE-MPE-EM
> > Office : 160/1-026
> > Tel : +41 22 767 37 02
> > Fax : +41 22 766 87 77
> >
> --------------------------------------------------------------------------------------------------
> >
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