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« on: March 13, 2013, 10:06:19 PM »
pline
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Built in Brass

Hello Fellow Modelers,
Any suggestions about adhesives for bonding Steel to Steel. I have a specific application where I need to bond (not silver solder), a garden gauge locomotive's 3mm dia steel axle ends to Steel wheels, using a suitable epoxy or CA, that will withstand a huge shear force of 15kg and work at temperatures under 50 deg celcius.
Thanks in anticipation.
Regards
Nilanajan Paul
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« Reply #1 on: March 13, 2013, 11:06:01 PM »
prateek13
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Try using the 8 hour epoxy or any other longer curing time epoxy....
I saw a video where some kind of CA was used to stick steel plates together... can't find it now Sad
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« Reply #2 on: March 13, 2013, 11:07:18 PM »
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you can try JB WELD . thats what i use in my 8th scale buggy exhaust system. 160f temps no issues. cant say much on strength.  
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« Reply #3 on: March 14, 2013, 06:11:03 AM »
lastRites
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Longer curing epoxy will be your best bet. But surface preparation must be perfect. I would advice you provide some mechanical support if possible (Through bolts or rivets).
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« Reply #4 on: March 14, 2013, 07:01:54 AM »
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Loctite 603
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« Reply #5 on: March 14, 2013, 08:05:46 AM »
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5 Min Steel Filler Epoxy Glue

0.91$ (0.86$ if you are a platinum member, or if you wait on the page long enough, one of the HK gimmick)

i have used it to add a nipple to the exhaust, works fine, can be drilled, milled & ground

http://www.hobbyking.com/hobbyking/store/catalog/24367.jpg
Adhesive for bonding Metal to metal
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« Reply #6 on: March 14, 2013, 09:38:23 AM »
sanjayrai55
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Don't wake a Tiger until you've factored the teeth
You could try roughening with emery paper, degreasing then CA. Try on some scrap first

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« Reply #7 on: March 14, 2013, 10:47:01 AM »
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thank you Gentlemen for the suggestions.
Looks like i have 3 options here, viz JB weld, Loctite603 & steel filler.
Regards
Nilanjan Paul
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« Reply #8 on: March 14, 2013, 10:53:57 AM »
vishalrao
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I doubt whether any other solution other than welding would support that much shear force. Epoxy, etc. might be OK for tensile strength but I doubt about it's bonding strength to withstand 15 kg shear force in 3mm area.
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« Reply #9 on: March 14, 2013, 11:19:51 AM »
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In spite of the fancy name - steel filler and jb weld are basically epoxy - i.e resin and hardener .
That way you can use Araldite - one of the oldest and most easily available epoxies.
loctite 603 is an anaerobic retaining compound used for retaining bearing onto shafts - i.e much
like the original use. We use it in industrial machinery gearboxes - and while I'm not sure of the shear strength - I'm sure it will be more than adequate for your purpose - its also available easily in any
good hardware shop like those in Chandni area.
Another option is two part acrylic glue - also easily available in chandni area. cures faster and dries harder
than epoxy.
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« Reply #10 on: March 14, 2013, 11:24:03 AM »
sanjayrai55
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Don't wake a Tiger until you've factored the teeth
When Super Glue was first introduced (as Loctite 495 in the early 80s) their ad on US TV was lifting a car with a helicopter, after inserting a steel plate and putting cyano both sides
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« Reply #11 on: March 14, 2013, 03:01:44 PM »
pline
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Saikat,
do you know a good source for loctite 603, I am unable to find any in Calcutta.
Regards
Nilanjan
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« Reply #12 on: March 14, 2013, 04:29:11 PM »
saikat
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There are some big hardware shops on Ganesh Chandra Avenue - Starting from Hind Cinema

Ask there - you will be sure to get.

Also posting an image of a commonly available acrylic glue - this will dry rock hard

* Kafuter_Super_Acrylic_Glue_Acrylic_AB_Glue.summ.jpg (3.25 KB, 100x89 - viewed 3197 times.)
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« Reply #13 on: March 14, 2013, 05:31:48 PM »
pline
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Hello Saikat,
thanks for the info.
I will check on G.C Avenue, as a matter of fact my model railway factory is adjacent to Hind Cinema.
Regards
Nilanjan
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« Reply #14 on: March 14, 2013, 07:22:17 PM »
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@nilanjan: since you are looking at some strength in the bonding, the best would be argon welding.
Araldite doesnt hold up long.

Shreekant
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« Reply #15 on: March 14, 2013, 08:23:04 PM »
saikat
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@rooster - read the original post - he does not want to even silver solder
so any form of welding is out.

In any case tig welding is highly specialised and overkill for this.

Like killing a cockroach with an atom bomb
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« Reply #16 on: March 14, 2013, 09:36:19 PM »
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I get the argon welding done for my Boats all the time and not all  expensive .
This could be one option that Nilanjan can look at if the joint needs strength.

Shreekant
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« Reply #17 on: March 15, 2013, 10:58:22 AM »
pline
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Hello Rooster,
welding is not an option. I do have TIG/MIG & silver soldering facilities at my workshop as we are garden railway locomotive manufacturers. My company website is www.pline.in
For this particular model a 45mm gauge loco, I cannot weld as all the cosmetic body work is in photo-etched brass and is soft soldered to the chassis.
Regards
Nilanjan
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« Reply #18 on: March 15, 2013, 11:19:08 AM »
sanjayrai55
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Don't wake a Tiger until you've factored the teeth
Initially you had mentioned steel wheel to steel axle. Brass can be brazed. If you can machine with sufficient accuracy (ream I/D of wheel, cylindrical grinding on shaft) then you can use a heat shrink fit; tolerances for 3 mm shrnk fit will be available in a Machinery Handbook
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« Reply #19 on: March 15, 2013, 11:20:18 AM »
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Sir
the wheels and axle are steel, but the chassis is brass.
regards
nilanjan
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« Reply #20 on: June 13, 2013, 09:31:21 PM »
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Admit it's a bit late, but look up COLD-WELD or FLAMELESS-WELD
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« Reply #21 on: June 13, 2013, 09:40:40 PM »
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I have gone for loctite 603 & its related activator.
Advise came in from a customer in holland.
Regards
Nilanjan Paul
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« Reply #22 on: May 22, 2014, 12:12:17 PM »
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Try these Instant adhesive bonding glue, this will give the best bonding between metal.
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RC India  RC Equipments  Tools, Materials and Building Techniques  Topic: Adhesive for bonding Metal to metal
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