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Author Topic: Brazing zink  (Read 2096 times)

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Tony H

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Brazing zink
« on: 26 May 2008, 16:48:43 »
Hi all, can anybody tell me if zinc can be successfully brazed? If just snapped off the sacrificial anode on my outboard motor whilst trying to remove the prop :(
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Re: Brazing zink
« Reply #1 on: 26 May 2008, 17:32:07 »
I believe it can, but can't remember how :(
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Tony H

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Re: Brazing zink
« Reply #2 on: 26 May 2008, 23:27:45 »
Bump :)
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Re: Brazing zink
« Reply #3 on: 26 May 2008, 23:32:49 »
Deb's will know. ;D
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Tony H

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Re: Brazing zink
« Reply #4 on: 26 May 2008, 23:35:48 »
I await her eagerly await Debs answer :y
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CaptainZok

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Re: Brazing zink
« Reply #5 on: 26 May 2008, 23:42:03 »
Bet MDTM will but he's on holiday this week.
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sassanach

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Re: Brazing zink
« Reply #6 on: 27 May 2008, 00:03:35 »
melting point of zinc =approx 400c
melting point of brass= approx900c
the zinc will be lonnnnnng gone before the braze melts
« Last Edit: 27 May 2008, 00:03:57 by sassanach »
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Ken T

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Re: Brazing zink
« Reply #7 on: 27 May 2008, 00:06:03 »
I think it could be soldered, but you would have to use an appropriate technique, eg grind back a 45deg "V" and fill up so as to get good side wall fusion, a bit tricky !.  Watch the temps as Sassanach has pointed out.

This might help [ http://www.azom.com/details.asp?ArticleID=2604

Ken
« Last Edit: 27 May 2008, 00:17:02 by Ken_T »
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sassanach

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Re: Brazing zink
« Reply #8 on: 27 May 2008, 00:19:33 »
looking at that website, i think it comes down to what you are going to use as a filler metal.soldering looks more like it here.
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Debs.

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Re: Brazing zink
« Reply #9 on: 27 May 2008, 20:35:21 »
Unless you`ve set your heart on Brazing (i.e: You have hard-brass wire to hand) I would recommend you Silver Solder it using an appropriate S.S/Brazing acid flux: an excellent strength joint with good electrical properties will result and with less risk of conjugant melting points being a problem. :y

Overview:  http://www.1911encyclopedia.org/Brazing_and_soldering
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STMO123

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Re: Brazing zink
« Reply #10 on: 27 May 2008, 20:37:39 »
Superglue it Tone :y
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Re: Brazing zink
« Reply #11 on: 27 May 2008, 20:39:40 »
You're a scouser so obviously the best repair would be to nick somebody elses. ;D ;D
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STMO123

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Re: Brazing zink
« Reply #12 on: 27 May 2008, 20:42:41 »
Quote
You're a scouser so obviously the best repair would be to nick somebody elses. ;D ;D

Hey you! Tony represents that remark. :)
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Tony H

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Re: Brazing zink
« Reply #13 on: 27 May 2008, 20:44:39 »
Thanks Deb I knew you would have an answer :y Brazing as previously pointed out is not an option due to melting points, do you think a reasonable bond can be achieved using lead solder.
STMO I think the item is too porus to achieve a good bond with superglue
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Tony H

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Re: Brazing zink
« Reply #14 on: 27 May 2008, 20:46:28 »
Quote
You're a scouser so obviously the best repair would be to nick somebody elses. ;D ;D
I thought of that but I couldn't find one compatable ::)
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