Weld repair in casting
Weld repair in casting
(OP)
Dear All,
I have a question about weld repairs on casting parts LCC. When we say weld repair means that if they find any defects then they have to grind out the defect and weld up the area. But the question is, during casting there are many small holes on the surface of part which most of casting suppliers weld up the area (many spot welding areas on part). Is it call weld repair too? My company doesnt accept any weld repair, so I need to know if this process of welding is common in casting.
Thanks.
Moe
I have a question about weld repairs on casting parts LCC. When we say weld repair means that if they find any defects then they have to grind out the defect and weld up the area. But the question is, during casting there are many small holes on the surface of part which most of casting suppliers weld up the area (many spot welding areas on part). Is it call weld repair too? My company doesnt accept any weld repair, so I need to know if this process of welding is common in casting.
Thanks.
Moe





RE: Weld repair in casting
RE: Weld repair in casting
RE: Weld repair in casting
RE: Weld repair in casting
We used to have limits on the depth, size, and number of repairs.
I would rather have a questionable area fixed than say 'well technically it passed NDT' even though it wasn't very good.
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P.E. Metallurgy, Plymouth Tube
RE: Weld repair in casting
If I wanted quality castings that were realistic to manufacture, I'd specify magnetic particle exam on the raw castings (so the foundry can immediately scrap the real bad ones) and again on a pre-machined components. Depending on the size of the part, leave maybe 0.050" extra material for critical areas. That way if a repair is done, the welding and heat treat won't warp things too much, and you'll still have metal to cut during final machining. If you completely machine to print and then have to weld repair / heat treat, everything will move around and you'll have fit/function problems. Which means more welding/heat treat and more machining.