Hi.
Recently noticed a crack in the boom support on my Volvo EC55B.
I ground the crack out which went all the way through.
Preheated.Tig welded the root run with supasteel wire.stick welded with 3.2mm 7016 low hydrogen rods.
The repair seemed successful but when it cooled a crack appered right at the join of the weld to parent material.
Ground it all out again. Got some advice from a engineer who said." No preheat,keep it cool as possible and peen each run".
Followed this procedure and it still keeps cracking.
I contacted Volvo but they don't have a repair procedure only replace, but at $2500 I would prefer to repair over replace.
Any suggestions would be appreciated.
Cheers.
Recently noticed a crack in the boom support on my Volvo EC55B.
I ground the crack out which went all the way through.
Preheated.Tig welded the root run with supasteel wire.stick welded with 3.2mm 7016 low hydrogen rods.
The repair seemed successful but when it cooled a crack appered right at the join of the weld to parent material.
Ground it all out again. Got some advice from a engineer who said." No preheat,keep it cool as possible and peen each run".
Followed this procedure and it still keeps cracking.
I contacted Volvo but they don't have a repair procedure only replace, but at $2500 I would prefer to repair over replace.
Any suggestions would be appreciated.
Cheers.
Help welding cast steel
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