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CC,
An NCR and a good kick in the ass are the first two that come to mind.
You don’t mention the thickness of the structural column or whether correct preheat was applied.
If I was the client I would be requesting hardness testing if it was a thick column.
Have you performed MT as a minimum on the weld ?
Regards,
DDSo you think welding a 300 mm coupon and performing a macro ( so you are actually looking at 1/300 of the coupon) is an accurate guide of a welders ability ?
Could be 250 mm of LOF in the coupon but you cut the macro in the right place and voila ! – you are qualified ??
NZS 4711 is accepted as an alternative code for welding to AS/NZS 1554.1.
That requires radiography, bend tests and nick breaks to pass.
Let’s see – a macro for one welder versus RT, bends and nick breaks for another welder – not really a level playing field is it.My comment about it being a waste of time stands – when I qualify welders I want to know what 100% of their weld is like – not 1/300
Cheers,
DDASNZS,
The “little hole / gray area” is not so little – it is a big black hole.Steveton,
Do not – I repeat do not attempt to qualify your welders with a macro per AS/NZS 1554 unless you are welding shopping trolleys – it is a complete waste of time.
Go straight to AS 2980 – radiograph your plate and you have a much greater range of applicability.
Example (one of many) – macro (or radiograph) to AS/NZS 1554 qualifies your welder for butt welds only.
Radiograph to AS 2980 qualifies your welder for butts and fillets.
Good luck,
Cheers,
DDGTD,
Firstly, a minimum of grade 350 is required.
Wherever it contacts with the dirt, rock etc it should be Bisalloy plate, or bisalloy plate liner on top of the grade 350, or grade 350 with hardfacing.
The idea is you never want to be replacing the actual bucket, you want to be replacing the plates that are in constant contact with the abrasive product.
A lot will depend on what sort of work the excavator is doing.
An excavator working in rock will require a different type of bucket lining than a bucket working exclusively in dirt.
Hope that helps,
Cheers,
DD
