I was about to refurbish a set of MV4 19" wheels my sister had bought as a second set, and found one of the rears had a crack previously welded which has cracked again through the weld.
I spoke to the refurbisher currently dealing with some MV2s of mine and as a matter of policy they won't re-weld a crack. Is this normal practice ?
Many thanks.
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Re-welding cracks
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Spriteracer
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- Location: West Wales
Re-welding cracks
2007 E86 "work in progress"
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sars
- Lifer
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Re-welding cracks
It’s probably more that you don’t want to weld in a place that was previously welded, the microstructure localised around the weld area gets affected by heat, this is known as heat affected zone (HAZ) and can make the local area more brittle.
Gorgeous SFR Z4 M40i 
Gone 2017 Iridium SL400, 2015 435d xDrive Convertible, 2012 E350 CDi Convertible, 2010 DSB Z4 sdrive30i, 2008 Audi A4 Cabriolet, 2006 Phoenix Yellow Z4 2.5Si, 2003 Saab 9-3 Convertible
Gone 2017 Iridium SL400, 2015 435d xDrive Convertible, 2012 E350 CDi Convertible, 2010 DSB Z4 sdrive30i, 2008 Audi A4 Cabriolet, 2006 Phoenix Yellow Z4 2.5Si, 2003 Saab 9-3 Convertible
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Spriteracer
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- Joined: Thu Jan 10, 2019 11:13 am
- Location: West Wales
Re-welding cracks
Many thanks Sars. That makes sense and is something along the lines the chap said. I guess that wheel is scrap then.....
2007 E86 "work in progress"
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jenniferlouise
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- Location: St Neots, Cambridgeshire
Re-welding cracks
Unfortunately this may well be the case… I’ve recently had both rear 326M alloys welded and one of those failed again (different place) before it got to the MoT centre, which has meant replacing the wheel. The other one is holding up so far tho. A