Maximum weld thickness
Maximum weld thickness
(OP)
Dear All
I am checking a HSS punch plate welded connection for the revised forces . i need more weld is acceptable to provide
18 mm weld with punch plate where as the wall thickness is only 16 mm
I am checking a HSS punch plate welded connection for the revised forces . i need more weld is acceptable to provide
18 mm weld with punch plate where as the wall thickness is only 16 mm
RE: Maximum weld thickness
Or a K prep on the bars that go on top of and under the tube? Or are those "bars" actually a complete plate through the tube?
If bars, you'll have very limited shear capacity there.
If a plate, I don't get how you'll be able to weld a K.
I don't understand the question nor your sketch.
RE: Maximum weld thickness
RE: Maximum weld thickness
RE: Maximum weld thickness
From SE Solutions, LLC [SE University]
But 18mm (0.71") of weld, how many passes to be made? You might need to check AWS standard, or a welding engineer for procedures.
RE: Maximum weld thickness
1.4x6=8mm weld?
Thanks in advance!!
RE: Maximum weld thickness
1) Along edges of material less than 1/4" (6mm) thick, weld size (w) shall not be greater than the thickness of material.
2) Along edges of material more than 1/4" (6mm) thick, weld size (w) shall not be greater than the thickness of material - 1/16" (2mm) unless the weld is especially designed to built out to obtain full-threat thickness.
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So for 6mm tube, w can be up to 6mm. For 8mm tube, w can be up to 8mm - 2mm = 6mm unless especially designed to be built out.
Note that the effective throat is the weld size (=leg size) /1.4 for a root opening of 0. For larger root openings, the effective throat is less.
Fillets larger than 3/16" (5mm) may require multiple passes depending on the process and electrode used. Multiple-pass welds may be significantly more costly than single-pass welds or a similar multipass PJP or CJP weld, again depending on the process, electrode or weld position.
RE: Maximum weld thickness
See, this previous discussion for further clarification: thread725-428434: Max size fillet weld in T joint.
Specifically, this image:
Typically, up to 5/16" fillets can be done in 1 pass (depending on welding process)
RE: Maximum weld thickness
I stand corrected on the point of maximum weld size for the application shown by the OP.
Yes, number of passes depends on the process and equipment. We normally use E7018 electrodes for our SMAW field welding and I (perhaps conservatively) assume that we can reliable do a 3/16 weld in a single pass. In our shop, the manager (perhaps conservatively) says that we can reliably do 1/4" in a single pass using FCAW.
I also do not like to go bigger than 1/2 the base metal thickness with the leg size when specifying 2-sided fillet welds in T-welds of one plate to another as I like to give my field welders some leeway to provide a larger leg to compensate for root openings larger than 0.
RE: Maximum weld thickness
RE: Maximum weld thickness
RE: Maximum weld thickness
Regards,
Pook