For light rail (metro, tramways, ...) in cities, in tight curves the top of the rail is sometimes welded with a 307 filler material (austenitic, work-hardenable layer with 18-8-6 Cr-Ni-Mn chemistry). The goal of this layer is (supposed to be) the mitigation of noise due to the wheel slip.
It is...
In Belgium, most of the pipeline and railway welding is performed with either Miller or Lincoln power sources, with a large preference for the red machines.
Now, only the 300 and 410 A Lincoln (diesel) gensets are available on the european market. The 500 does not have the required CE marking...
I contacted https://www.websterinstrument.com/ to see if they have any conversion tables or charts to HBW, but they replied that they only use the Rockwell scales.
I searched, but google wasn't of any help.
Before I spend a lot of money to try and make something myself (by the hand of a...
See attached pics, approx. 100 ft pole for overhead electrical lines with a circular baseplate mounted on threaded studs.
Doesn't look that old, however the installation has been in service for a few years, so unlikely that grouting is still planned to do.
There is no cable (apart from a ground...
Looking for a document (preferably a standard or something with authority) that states under what conditions PWHT is necessary.
I'm not looking for experience or guidelines to be clear, I'm looking for codes or standards that states when PWHT is (or is not) necessary.
Probably 90% of our...
Our local shooting range needs to renew the backstop plates. No info on the quality that was used previously, so no useful empirical data.
I tried googling but I didn't quite found what I am looking for.
Is there a known (empirically determined) relationship between calibers, distance, steel...
I've been looking for some time for a decent, portable, weld data scanner. I've rented different equipment and I've talked to even more persons using such equipment, however everybody has a very different opinion on the materials they use.
My requirements are simpel: being able to measure and...
On a large parking (think for approx. 2000 cars), is there a guideline of square footage (or meterage, as I'm using the correct dimensional units :-) ) per car, that includes the "roads" inbetween the different rows of parkings?
Does this number differ a lot from smaller car parks (think...
In this thread I read:
I have had problems in the past with bend test on Ti butt welds (both CP as Ti-Al-V alloy). ISO standards and AWS mentioned different bend radii (ISO being much smaller thus harder to achieve), which put me from the start in a difficult position.
I have had contact with...
Just saw the above image on LinkedIn.
As a welding engineer, I'm wondering:
1) is it correct, that the fromt suspension turrets are in aluminium, (cast/deep drawn?)
and if so,
2) how are they connected to the steel frame (conventional welding isn't an option, that leaves deformation joining...
I am looking for an EN or ISO standard that describes the design, safety factors, ... of fixed load-lifting attachments.
The problems I'm encountering is defending my design against a client that double checks every aspect of the design and fabrication.
We're talking specifically welded...
I am in need of a ceramic backing with a particular geometry.
I have asked the known suppliers in Europe (Esab, Böhler, Lincoln, ... and some of the larger wholesellers) and none of them have anything in stock that would suit, and they do not want to disclose their supplier (I suppose they also...
Saw this picture on a social media channel few days ago.
What is the middle bolt row (inbetween both C channels) for?
In europe, there are two kinds of C channels: with parallel and tapered flanges. Anybody cares to guess about those? I don't dare to tell from the pictures, but I don't see...
I got a client (ASME III project + lots of client specs that are a combination of ISO and ASME/AWS points) that requires a qualification of the filler material according to A5.17.
So far so good, this can easily be arranged.
But - how do I document this? I am asked to write an "upgrading plan"...
What is the general consensus on MT on ferromagnetic steels, welded with an austenitic stainless filler?
Can this be done? If so, are there limitations on the acceptance criteria, is the accuracy as high as when performed on all magnetic joints?
I am by no means an NDT expert, I just had a quick...
Could someone please tell me what the requirements are for yield and tensile strength according to the below specifications please?
I would really appreciate a screenshot from the relevant table or something similar (but I will take whatever I can get!).
Thanks for your kind cooperation...
AS...
I've got an o ring that seals the oil pickup filter in an automatic transmission (ZF 4HP22). I contacted ZF, but so far no reply and I'm in a hurry to get the car back onto the road.
The O ring that came from the car is obviously not elastic anymore (24 yrs old most likely, as old as the car)...
Not trying to get this thread into a debate, just curious:
Has there ever been done testing about the efficiency (however you measure it or whatever the variables are) of extremely dirty and extremely smooth exteriors vs. "standard" surface?
I believe that an extremely dirty car is much more...
I'm looking for the kind of steel (QT most likely, TRIP, CP or DP, ...) that this is. Should be an fy (Rp,0.2) = 1100 MPa steel.
When I google for St1100, all I get is Honda motorcycles (the same type I got, amongst others...).
Does any of you have access to the Stahlschlüssel (key to steel)...
While this is not a necessity, I have a case where I would like to give some guidance to the welders about the inductance setting on a MAG welding procedure.
Problem is, the setting is dependant on the make of the machine. Some settings are analogue (think different connectors for the return...
