getting copper parts plated in solder

Parts & Suppliers for EVs
Post Reply
antiscab
Senior Member
Posts: 2480
Joined: Mon, 26 Nov 2007, 05:39
Real Name: Matthew Lacey
Location: Perth, WA

getting copper parts plated in solder

Post by antiscab » Sat, 29 Jun 2013, 12:53

Hi Guys,

I'm about to be getting some copper parts plated in solder (Tinned in other words)

It's only really a flat fee to get a very large quantity tinned at the same time.

The place is a radiator place in Kelmscott

If you have some stuff you would like to get tinned at the same time (doesn't have to be copper) let me know in the next week or so, and we can do it at the same time.

Costs $150 for each session with the plating tank

When I can find the contact details of the place again, I'll post it up.

for a bit of background on my project:

I'm making copper interconnects for groups of 8 parallel blocks of 10Ah headway cells.

I bought a sheet of copper and had it water cut at Jet Cut in canning vale

Matt
Matt
2017 Renault zoe - 25'000km
2007 vectrix - 156'000km
1998 prius - needs Batt
1999 Prius - needs batt
2000 prius - has 200 x headway 38120 cells

User avatar
jonescg
Senior Member
Posts: 2991
Joined: Thu, 21 Jan 2010, 23:05
Real Name: Chris Jones
Location: Perth, WA.

getting copper parts plated in solder

Post by jonescg » Sat, 29 Jun 2013, 18:06

Haha, you too eh?

I have about 29 water-jet cut bus links which could be tinned, and lots of bus links for my bike project. I was wondering if I should get them tinned or just leave them, but since they will be clamping down aluminium tabs I should probably do what I can to make them as corrosion resistant as possible.

I'll send you an email with my project needs.
AEVA National Secretary, WA branch chair.

antiscab
Senior Member
Posts: 2480
Joined: Mon, 26 Nov 2007, 05:39
Real Name: Matthew Lacey
Location: Perth, WA

getting copper parts plated in solder

Post by antiscab » Sat, 29 Jun 2013, 18:55

might be worth seeing if you can get the aluminum tabs tinned as well
Matt
2017 Renault zoe - 25'000km
2007 vectrix - 156'000km
1998 prius - needs Batt
1999 Prius - needs batt
2000 prius - has 200 x headway 38120 cells

User avatar
jonescg
Senior Member
Posts: 2991
Joined: Thu, 21 Jan 2010, 23:05
Real Name: Chris Jones
Location: Perth, WA.

getting copper parts plated in solder

Post by jonescg » Sat, 29 Jun 2013, 18:58

They (both the copper and ally tabs) are already nickel plated, so they might be fine. Email sent.
AEVA National Secretary, WA branch chair.

User avatar
4Springs
Senior Member
Posts: 567
Joined: Thu, 23 Dec 2010, 01:14
Real Name: Christopher Walkden
Location: Selbourne, TAS

getting copper parts plated in solder

Post by 4Springs » Sun, 30 Jun 2013, 00:20

So what's the go with tinning?
I had heard that naked copper was the best because it is much more conductive than solder. But then if it is going to corrode, a coating of less conductive solder might be better.
I have some naked copper connectors and have been checking them every month for corrosion. They are kept warm and dry, and I haven't seen any green spots yet. Mind you I haven't disconnected any to see on the actual conductive surface.
As suggested above, I suppose it also depends on what metal your copper is connecting to?

User avatar
jonescg
Senior Member
Posts: 2991
Joined: Thu, 21 Jan 2010, 23:05
Real Name: Chris Jones
Location: Perth, WA.

getting copper parts plated in solder

Post by jonescg » Sun, 30 Jun 2013, 02:01

It does reduce the conductivity of the mating surface a little, yes, but I suspect corrosion would reduce it considerably more. Lots of silly things have been done to terminate pouch cells with aluminium tabs. Some even claimed they could solder them! Until the solder peeled off. Some think that by maximising the surface area you get more conductive joints. But the current still must flow through a 0.2 mm thick tab, and at hundreds of amps, it gets hot. The ability for this heat to go somewhere other than the cell itself is the key. Lots of contact is going to aid this, but a 2 mm thick lump of copper is also pretty good at soaking heat. Try tinning bus links with an 80 W iron - takes a while!

In the end, I think it comes down to mating surface area and the ability for the connection to soak up heat, with the former affecting the latter.
AEVA National Secretary, WA branch chair.

User avatar
Richo
Senior Member
Posts: 3737
Joined: Mon, 16 Jun 2008, 00:19
Real Name: Richard
Location: Perth, WA

getting copper parts plated in solder

Post by Richo » Mon, 01 Jul 2013, 21:01

Are these individually hung or put through the tumbler?
So the short answer is NO but the long answer is YES.
Help prevent road rage - get outta my way!

Mrburns
Noobie
Posts: 4
Joined: Sun, 12 May 2019, 06:08
Real Name: Tom

Re: getting copper parts plated in solder

Post by Mrburns » Sun, 12 May 2019, 06:13

Can always get your self some of this https://www.castolin.com/product/castotin-1 and DIY, it’s very expensive but a little goes along way and it’s super easy to use.

Have a clean copper part paint it on cold, heat it with a oxy acetylene torch and wipe off with a cotton rag for a smooth shiny tinned surface.

User avatar
coulomb
Site Admin
Posts: 3762
Joined: Thu, 22 Jan 2009, 20:32
Real Name: Mike Van Emmerik
Location: Brisbane
Contact:

Re: getting copper parts plated in solder

Post by coulomb » Sun, 12 May 2019, 06:27

This reminds me of a product called something like Cool Amp. I was given a small quantity of it decades ago. It was a white powder that you rubbed onto copper, and it became silvery. It had actual silver particles or salts in it.

I used to use it for making printed circuit board edge connectors that didn't tarnish, or at least tarnish less than bare copper. Its actual purpose waszas the name suggests, for keeping high current copper to copper junctions cool by lowering the contact resistance.
Nissan Leaf 2012 with new battery May 2019.
5650 W solar, 2xPIP-4048MS inverters, 16 kWh battery.
1.4 kW solar with 1.2 kW Latronics inverter and FIT.
160 W solar, 2.5 kWh 24 V battery for lights.
Patching PIP-4048/5048 inverter-chargers.

User avatar
weber
Site Admin
Posts: 2621
Joined: Fri, 23 Jan 2009, 17:27
Real Name: Dave Keenan
Location: Brisbane
Contact:

Re: getting copper parts plated in solder

Post by weber » Mon, 13 May 2019, 11:23

Why not just clean the mating faces before assembly and use a jointing compound to prevent corrosion?
https://www.cabac.com.au/products/lugs- ... s/10102005
One of the fathers of MeXy the electric MX-5, along with Coulomb and Newton (Jeff Owen).

Post Reply