[TheForge] Fwd: Anvil repair

[Chuck Robinson]

Hey James ,
FWIW I preheat the anvil to about 200 F with a weed burner making sure 
that the heat is applied evenly to the whole anvil. A cheap Harbor 
Freight infra red non contact temperature gun works well to check the 
temperature.
I use 7018 rod and peen the rod pass while it is still hot.
  Remember if you weld on an anvil that is too hot you may soften the face.
Check the anvil heat between welding passes to make sure you are not 
overheating the face
When all the welding is completed I put a large cardboard box with the 
top and bottom cut off around the anvil and fill it up with dry 
vermiculite and let the anvil slowly  cool down over night.
I have tested  a lot of anvils and the optimum hardness, with good 
hammer rebound, appears to be about RC 50. Softer anvils seem to ding 
too easily and have a crappy rebound;harder anvils tend to chip their edges.
Chuck

On 4/27/2013 6:53 AM, James wrote:
>
>
>
> Not long after I posted my request for anvil repair info, I found an 
> old article by Robb Gunter on the subject.  His article mirrors, 
> pretty much, some of the replies here, cleaning, preheating (300 -400 
> F), etc.  He uses a propane weed burner to preheat prior to repair.
>
> Regarding the Lincoln Abrasoweld stick electrode I mentioned. These 
> are really old electrodes that I've had for maybe 30 years. I called 
> Lincoln Electric and was advised that this rod is the same as what 
> they now call Lincoln Wearshield ABR and would be fine for this 
> application.  It is limited to 2 passes however, so I will need 
> something underneath.  The Lincoln tech suggested their Wearshield BU 
> (build up) underneath, after cleaning.  He commented that there would 
> be no problem welding just about anything into the old wrought iron base.
>
> So, I'll practice on a rod or two to see how much deposition I get 
> with the ABR.  This should give me an idea how much build up I'll 
> need.  The edges of the old anvil are hammered down to about a radius 
> equal to a 3/4" - 1" round bar would look like.
>
> In the FWIW dept, I snipped and pasted tech comparison of the BU/ABR 
> electrodes.  It appears that didn't make it thru the robot and/or 
> moderator review process.  Oh well, I wasn't trying to advertise for 
> Lincoln.  The Lincoln BU rod has an as welded Rockwell of 15-28 
> depending on # of passes, the ABR rod's Rockwell is 28-53 for 2 
> passes.  The spec for ABR rod states it is a "good low cost abrasion 
> and impact product".
>
>
>
> Thanks guys,
> James
>
>
>
>
>
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