[TheForge] soldering v brazing v welding (fyi)

[Justin Fellenz]

Mike,

I'll do that, thanks. I must confess to not having read the thing in
detail--just thought it might be useful so passed it on. Good to know
it's suspect.

BTW--Will you be selling protective gear in Seattle? I'm having trouble
finding a #2 shade face sheild at my local welding supply store. I know
they're sub optimal, but I figger I can learn to judge color through
the green for the $300 savings for one of those really cool gold
setups, especially because I know I'd drop it or something someday and
then cry. I prefer faceshields for damascus making because of the
inevitable flying flux, and I wear glasses. 

JRF

--- Mike Porter <michael.a.porter at comcast.net> wrote:

> JRF
> Harris (of torch equipment fame) makes a poor source for
> enlightenment about 
> joining processes (good enough source for filler alloys though). This
> is the 
> first time I've ever seen the term "coalescence" used that way. The
> usual 
> description is "metallurgical bond" and the process is called
> diffusion. I 
> would recommend you try Handy & Harmon's Brazing Book On Line if you
> want a 
> quick soldering/brazing education: http://www.brazingbook.com/
> I'm afraid you have to register with them nowadays, but it is worth
> the few 
> minuets of your time. These guys actually know what they are talking
> about.
> Mikey
> 
> ----- Original Message ----- 
> From: "Justin Fellenz" <sunironworks at yahoo.com>
> To: "Sponsored by ABANA" <theforge at mailman.qth.net>
> Sent: Friday, March 17, 2006 9:34 AM
> Subject: [TheForge] soldering v brazing v welding (fyi)
> 
> 
> > Folks,
> >
> > A while back there was a discussion about the definitions of
> soldering
> > v welding v brazing, to which I added some confusion. Here's
> something
> > that just showed up on the metalshapers list.
> >
> > JRF
> >
> >
> >
> > Hi Bill & Alan:
> >    Just to clarify the differences of Soldering and Brazing
> > http://www.jwharris.com/jwref/faq/#def gives the following
> definition.
> > Further information is availble at the Harris site and from the
> > American Welding Society website.
> >
> > Definitions
> >
> > What is the difference between soldering, brazing and welding?
> >
> > Soldering - The AWS defines soldering as a group of joining
> processes
> > that produce coalescence of materials by heating them to the
> soldering
> > temperature and by using a filler metal (solder) having a liquidus
> not
> > exceeding 840ºF (450ºC), and below the solidus of the base
> metals.
> >
> > Brazing - Brazing joins materials by heating them in the presence
> of a
> > filler metal having a liquidus above 840ºF (450ºC) but below the
> > solidus of the base metal.
> >
> > Welding - In welding, fusion takes place with melting of both the
> base
> > metal and usually a filler metal.
> >
> >    BTW,  Nice looking work Bill.  Thanks for sharing it with us.
> >
> > Roger VanHoozer
> >
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