[SEL] CAST IRON WELDING

[frank skinner]

Bill;

Cast Iron welding is not a tuff task, really.

the quality of the weld depends {to an extent on quality of the cast iron

your attempting to weld}

The casting needs to be very clean, the crack "VEE'd" out {almost all the way thru }

The piece pre-heated, a good quality rod used { there many} I like McKay or Lincoln.

Work at lower heat ranges, skip-weld along the break { clamp together} if need be.

Use many beads, chipping & wirebrushing the slag away COMPLETELY  between

each pass.

 

Note the Piece needs to be uniformly preheated, the hotter the better

{ to a point} not red hot, actually not even to change the color,

but close.

After welding the Piece needs to cool VERY SLOWLY , this can be buried

 in lime, sand, covered with several layers of a welding blanket, the poing is 

that the slow cooling will remove a lot of stress from the weld.

 

After its completely cooled, it can also be further stress relieved with an air needle gun.

 

Another note;  The bigger the piece { Mass}  the more the above is important,

the smaller it is the less important, also it can be welded in stages to eliminate 

the sudden heating of the part. Also it is of advantage to end-stop drill the 

cracks as well.

 

Cast iron welding is like learning to ride a bicycle, you may fall off

a time or two, but once you got, it its easy, by the way cast iron rod 

{ the good rods} weld like stainless steel, { like butter} & flow great.

 

The better the rod, the better the job as well .

 

www.oldengine.org/members/fskinner

 

 

            Best of luck

        Franklin S. Skinner 
    Marine Surveyor & Consultant 
3428 Talon Court Wilmington NC 28409 
       34'10.9 North 74'52.4 West 
PH 910-791-8870 Cell 910-612-7470



 
> Date: Tue, 1 Sep 2009 03:19:19 -0700
> From: wmlyoung at yahoo.com
> To: sel at lists.stationary-engine.com
> Subject: Re: [SEL] CAST IRON WELDING
> 
> 
> Greetings to SEL crew,
> >From Bill Young in Japan
> Re.  Cast iron welding
>  
> What do we know, collectively, about welding our toys?  I have always heard that it takes a trained technician using special equipment and rod to do a superlative job.
>   A few years ago ( before 9/11 ) I hauled a huge head to a shop in California  that did nothing but cast iron repairs.  it was expensive but beautifully done and worked well for as long as I had the engine.  I wanted to watch but was not permitted to do so.
>    Thanks, standing by, Bill
> Another question:  Suppose this topic had been discussed 5 or 10 years ago.  Would it be archived somewhere and still available?
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