https://app.aws.org/forum/forum.plAmerican Welding Society Forum - Technical Standards & Publications15 Latest forum posts2022-12-23T14:26:01ZmwForumhttps://app.aws.org/forum/topic_show.pl?pid=288776AWS D1.1 un-list material (plate to pipe)jwright6502022-12-23T12:04:30Z2022-12-23T12:04:30Z2https://app.aws.org/forum/topic_show.pl?pid=288775AWS D1.1 un-list material (plate to pipe)TimGary2022-12-22T18:47:00Z2022-12-22T18:47:00Z2
AWS also offers Standard WPS (SWPS) for sale for some applications.]]>
https://app.aws.org/forum/topic_show.pl?pid=288774AWS D1.1 un-list material (plate to pipe)Somkiat2022-12-22T09:30:01Z2022-12-22T09:30:01Z2 How to do PQR to cover this joint?
It's difference product from (plate to pipe), We can't do butt joint PQR to perform tensile test.
please advise]]>
https://app.aws.org/forum/topic_show.pl?pid=288748Micro Hardness for Hardness survey on PQRToey TNDT2022-10-11T05:55:21Z2022-10-11T06:06:58Z0
As API 660 requires a Micro-hardness test with comply Nace Standard
I suspected in ASTM E384 and hardness survey point of NACE MR0175 how to micro-hardness(tiny point) provide the correct requirement
Micro-hardness may be pressed at pearlite or bainite. ?
Regards]]>
https://app.aws.org/forum/topic_show.pl?pid=288560D1.1 prequalified WPS parameter8030562021-11-09T15:19:54Z2021-11-09T15:19:54Z3 The prequalified WPS must use the gas and parameters recommended by the manufacturer. However, those parameter ranges are restricted by a % +/- value assigned by the committee.
So, it is permissible to write a prequalified WPS using the lower ranges of parameters recommended by the manufacturer. A second prequalified WPS for the mid range, and finally a third prequalified WPS for the upper range recommended by the manufacturer.
However, the Farm Code also allows the user to combine WPSs. So, one can combine the three prequalified WPSs and use the full range recommended by the manufacturer. Seems rather restrictive and needless if the premise is the manufacturer has demonstrated the full useful range of welding parameters for the particular electrode.
I have a problem with this restriction being included in the Farm Code. It doesn't make a lot of sense to me. But what do I know? I've only been burning wire from the 1960s. I still have a lot to learn from the brainiacs that sit on the code committee.
Al]]>
https://app.aws.org/forum/topic_show.pl?pid=288559D1.1 prequalified WPS parameterjwright6502021-11-08T14:30:41Z2021-11-08T14:30:41Z3https://app.aws.org/forum/topic_show.pl?pid=288557D1.1 prequalified WPS parameterLawrence2021-11-08T14:01:01Z2021-11-08T14:01:01Z3 If you want to provide a range on your prequalified WPS it must be within the values prescribed in table 5.1
As far as "Manufacturers recommendations" go, the only thing in the prequalification clause that speaks to it is Maximum Current again in table 5.1 and that is only for SMAW, GMAW & FCAW.
If you select a range, you want it to be a range that will make good welds; meaning, not so wide that the welders can create bad combinations, and not so narrow the welders can't do the work in front of them.]]>
https://app.aws.org/forum/topic_show.pl?pid=288554D1.1 prequalified WPS parameterSomkiat2021-11-04T14:13:53Z2021-11-04T14:13:53Z3 200-350 amp 24-30 volt
My question is can I put this range in prequalified WPS?
or we should select +-10% amp and 7% volt example 270-330 amp, 26.1-29.9 volt 225-275 amp, 24.2-27.8 volt
Please advise]]>
https://app.aws.org/forum/topic_show.pl?pid=288407Difference between 9.1 and 1.3?Tim632021-04-19T06:30:53Z2021-04-19T06:30:53Z4https://app.aws.org/forum/topic_show.pl?pid=288300Slotted hole tolerancesSWN11582021-03-03T11:08:12Z2021-03-03T11:08:12Z5 3.3. Element Location Tolerances
3.3.1. IS A TOLERANCE ON HOLE OR HOLE PATTERN LOCATION SPECIFIED IN THE AISC CODE OF STANDARD PRACTICE?
No. Neither the ±1∕16-in. tolerance, where applicable, on overall length of members framed to other steel parts nor the 1∕16-in. clearance on size of standard holes should be construed as implying that the tolerance of ±1∕16 in. also applies either to the maximum tolerance on hole location within a pattern of holes or to the position of intermediate connections.
Table J3.3 in the AISC Manual lists maximum dimensions of standard, oversized, short-slotted and long-slotted holes, which is based on the RCSC Specification.
With regard to the use of slotted holes or oversize holes, I take advantage of where the AISC allows them, simply because it gives a little more tolerance during fit-up in the shop, and their use helps during the erection process. In some cases, it eliminates the need for drift pins.]]>
https://app.aws.org/forum/topic_show.pl?pid=288298Slotted hole tolerances8030562021-03-02T17:59:48Z2021-03-02T18:02:47Z5 I understand the holes can be used even if the tolerance is exceeded as per your example, but that isn't the reason to use slotted holes.
AISC has published two manuals, one for the detailer and a separate manual for the designer. Since I'm not in my office, I can't quote the exact titles or the page number where the information is found. Sorry.
Just saying - Al]]>
https://app.aws.org/forum/topic_show.pl?pid=288296Slotted hole tolerancesSWN11582021-03-02T17:39:09Z2021-03-02T17:39:09Z5https://app.aws.org/forum/topic_show.pl?pid=288294Slotted hole tolerancesididntdoit892021-03-02T12:10:27Z2021-03-02T12:10:27Z5https://app.aws.org/forum/topic_show.pl?pid=288293Slotted hole tolerancesSWN11582021-03-02T11:41:58Z2021-03-02T11:41:58Z5 With regard to clip angles that have 13/16'' x 1'' slotted holes and the center to center of slots are suppose to be 5 1/2''... these slots are for 3/4" bolts, and they have 1/4" "play" in a 1" long slot. So for something that has a 5 1/2" c/c dimension, the actual c/c dimension can be 5 1/4" to 5 3/4" and still work.]]>
https://app.aws.org/forum/topic_show.pl?pid=288277Slotted hole tolerancesididntdoit892021-02-24T20:55:50Z2021-02-24T20:55:50Z5