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How to Weld a Cast Iron Engine Block

Testimonials

Mike,

These pics come from a new aerospace test facility that they are constructing at the University of Notre Dame. The SSF-6 is working great.

 

aluminum welding and metal repair

I am attempting to make all of these fittings air tight as they are used for pressure measurements. We can¹t have any leaks. I had very little warpage of my base metal and I think this is really going to work out very well.

 

metal fabrication and repair with muggyweld

Thank you,

 

David Hipskind
Turbomachinery Technician
The University of Notre Dame
Institute for Flow Physics and Control (FLOWPAC)
The Hessert Laboratory for Aerospace Research

 

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1989 Continental Diesel Cast Iron Engine Block with a sizable hole punched through from a rod was welded with MuggyWeld 77 Cast Iron electrodes. Our customer used TIG welding for this motor, but many of these engines have been repaired using arc or stick, even with an old buzzbox.

 

These engines are found in Miller Big 40D welders and Case Skid Steers. Cory broke the flux off the stick and cleaned the wire with scotch brite before welding. (some welders choose to leave the flux coating on when TIG welding)

 

The cast iron was sanded or ground down just to make sure there was no debris, grease etc. that could've been trapped in the pores of the weld area. Small tack welds were used. The broken cast iron pieces were TIG welded using a 2% Thoriated Tungsten and Argon Gas. Cory tack welded the whole piece (mounting base) into the block.

 

Tack welding is an important step as it holds the part in proper alignment until the final welds are made. He also pre heated the cast iron with a torch and post heated as well to ensure even cooling.

 

77 Electrode Products

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1/2 lb 77 Electrode 3/32"
1/2 lb 77 Electrode 3/32"

Save those expensive parts: cast iron exhaust manifolds, cast iron engine blocks, Caterpillar parts..

1/2 lb 77 Electrode 1/8"
1/2 lb 77 Electrode 1/8"

Save those expensive parts: cast iron exhaust manifolds, cast iron engine blocks, Caterpillar parts..

1/2 lb 77 Electrode 5/32"
1/2 lb 77 Electrode 5/32"

Save those expensive parts: cast iron exhaust manifolds, cast iron engine blocks, Caterpillar parts..

1 lb 77 Electrode 3/32"
1 lb 77 Electrode 3/32"

Save those expensive parts: cast iron exhaust manifolds, cast iron engine blocks, Caterpillar parts..

1 lb 77 Electrode 1/8"
1 lb 77 Electrode 1/8"

Save those expensive parts: cast iron exhaust manifolds, cast iron engine blocks, Caterpillar parts..

1 lb 77 Electrode 5/32"
1 lb 77 Electrode 5/32"

Save those expensive parts: cast iron exhaust manifolds, cast iron engine blocks, Caterpillar parts..

5 lb 77 Electrode 3/32"
5 lb 77 Electrode 3/32"

Save those expensive parts: cast iron exhaust manifolds, cast iron engine blocks, Caterpillar parts..