[TheForge] Welding Tool Steel

[David E. Smucker]

I wouldn't be surprised if the whole think isn't brazed -- with silver 
brazing -- so that the temperature can be kept low.  I assume that these 
repaired dies are not reheat treat?  That is a question.

The final surface repair maybe a TIG silver braze.

Dave Smucker
----- Original Message ----- 
From: <xlch58 at swbell.net>
To: "Sponsored by ABANA" <theforge at mailman.qth.net>
Sent: Wednesday, January 24, 2007 11:32 AM
Subject: Re: [TheForge] Welding Tool Steel


> Bruce Freeman wrote:
>> You've probably figured it out. Weldors often underestimate the strength 
>> of brazing.  I wouldn't be surprized if the guy TIG welds the surface 
>> just because the customer expects the part to be welded back together. 
>> The braze alone might do the job.
>> One reason brazing might work better than welding is related to what your 
>> die makers said about the big V.  If a good weld is backed up by a 
>> nonwelded crack, it's something like a cold shut - a point at which 
>> cracking can happen again.
>> On the other hand, don't underestimate the skill needed to correctly 
>> braze a joint.  I'd suggest you get the guy to train you how to do what 
>> he's doing, and pay him appropriately for the knowledge.  That way he's 
>> compensated for the loss of business, and you don't have to worry about 
>> his passing away and leaving you in the lurch.
>> Bruce
>> NJ
> A professional getting a good brazed joint doesn't surprise me at all, 
> particularly if they have been doing it for many years. Engine blocks and 
> such are furnace brazed all of the time.  What does amaze me is getting a 
> good weld on top of a brazed joint ( if he in fact is).   How would he 
> keep the braze from mucking up his weld?
>
> Charles
>
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