Weld failure ....... what to do?

[vpug]

Hi
I also would say it looks like the weld has just been worn away, is it being dragged across sand beds ?
If so it is down to poor design, if it is being dragged in that direction a curved edge would work better.
Thanks Vpug

 

[Tiggy_dorset]

I produce a Stainless product using 304 stainless steel.

It is used in saltwater digging in sand. The weld is not worn away.
Chuck

Please correct me if Im wrong, but isnt 316 marine grade stainless, not 304?

 

[hotrodder]

Pretty much all been said... pics are not really high enough resolution to zoom in properly but looks to me like a partial pen weld which has been completely worn away well into the parent metal (green circle for example). Zoom in on the area circled in red and it looks like the origional cut edge is still visible

As everyone else said a full pen weld will last longer, welding the inside will increase life further etc

Yep 316 is commonly known as marine grade but it's being worn out not failing due to corrosion

 

[backpurge]

Without a full penetration joint or the joint being welded from both sides and degree of flexing in the component will cause the weld to crack from the inside, the joint needs to be reiforced on the inside either by a weld of some form of gussett.
From what I can see the original deposited weld looks OK and if your contractor has done what you asked him to you cannot really blame him, suggest the best course maybe to get round the table with him and discuss ways the product design could be improved to avoid further failures

 

[TechnicAl]

I cant see it properly but all the pics seem to show very straight lines of weld or of failure. More often than not this means that it has never been welded properly in the first place. In other words lack of fusion or lack of pen or poor design.
A weld isnt straight, even a robotic weld so if the weld has become an integral part of the structure (ie fully fused) any failure will occur along the weakest points which is very rarely a straight line.

Ive been looking at weld failures for 40 odd years and hardly ever seen a crack, more often than not it was never welded in the first place.

 

[the snooper]

unless it me the picture or both it doesnt look to have fully penetrated as you seem to be able to see the edges of the steel

 

[Piero]

If I am not mistaken, thats a metel detectors sand shovel.
They get a hell of a lot of abause.

You need to re-think that edge (as said before)
I will put my bottom dollor on it, the weld has simply been worn away.

could you not supply a bolt on skid plate,