Subject: Anvil refacing, etc...

From: Mike Linn <[email-masked]>
Date: Thu, 25 Apr 96 17:02 EDT

I recently came across a process that Id never heard of before, and
it sounds like just the thing to solve the anvil refacing and buildup
problems that have been discussed reciently. The process is called
"Eutalloy" and was created in 1963. Here is an exerpt from the brochure I
have...

"The Eutalloy process utilizes a specially designed oxyacetylene torch to
asperate and propel powder alloys onto a base metal surface. It is a one
step process whereby the spraying and fusion occur simultaneously. All
Eutalloy deposits are metallurgically bonded. The Eutalloy process
providesthe weldor with the capability for depositing a wide range of alloys
with uparalelled precision and the ability to control the shape of the
buildup with unmatched accuracy...It can be used to perform such diverse
operations as overlaying, cladding, filling, restoring, building up missing
sections and joining on virtually every type of base metal."

        Each of these powders has different resistace to heat, shock,
thermal cycling, abrasion etc...This brochure says that the powder layers
can be combined to achieve the desired combination of toughness/hardness and
can be appiled in layers up to 1/4" thick or so. The basic procedure seems
to be to grind the base metal clean and degrease it. Then heat to a blue
heat (400 deg F) and using the special OxyAcetylene torch, heat and apply
the powder. The torch looks like a standard cutting torch but with a welding
tip. A small threaded pipe extends from the top of the torch head and a
small container of the powder is screwed onto the pipe. Use the torch like
you would be welding and when it gets to temperature you depress the handle
and the powder is sucked into the gas stream and is melted and deposited on
the base metal in one step. I watched a demo of this to rebuild compressor
heads and valve stems in a very large industrial compressor.

        Does anyone know about this procedure and if so will it work to
reface anvils, surface harden chisels etc.. For someone who is really
interested and wants more detailed info you can call:

                        Eutectic Corporation
                        1515 Brook Drive
                        PO Box 536
                        Downers Grove, Il 60515
                        1-800-323-4845

        Your local welding supply vendor might be able to help you also.

Here is a list of the powders and their uses...

Borotec 10009 - Cams, screws, die cutters, tools,   - air cools to Rc-60

Eutallite 10092 - valves, punches,  tongs,  air cools to Rc- 45-50

BronzoChrom 10185 - shafts, gears, tools, molds   air cools to Rc 36-42

Tungtec 10112 - mixer paddles, die frames, screws   air cools to Rc 57-64

Nitec 10224 - engine blocks, gear housings, cast iron  air cools to Rb 89-96

Chromtec 10680 - shafts, patterns, eccentrics, air cool to Rc 10-15

Diamax 10999 - cutting knives, fan blades, feed rolls, air cool to Ra  80-85

Hope this helps somebody but I dont know enough about welding etc.. to be
much help myself.

mike
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               Michael Linn 
            Artisian Blacksmith
              AFC Web Master
 http://www.the-matrix.com/afc/index.html
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From: [email-masked]
Date: Fri, 26 Apr 1996 21:25:51 -0400

I've seen flame-spraying with a torch done at a trade show.  It can be used
to build up shafts and such but the layers are very thin and it would take a
lot of work to achieve much usable thickness.  I think you are better off
rebuilding with the proper electric welding rod.  Just my two licks...

hollis