Questions tagged [welds]

Use this tag when the question deals with the design of welds or their uses. For questions about the physical process of making welds, use the [welding] tag.

Welding is the process of combining two pieces (typically metals) together. To successfully create welds, an experienced welder (person) with the proper tools can be required. Welding is a specialized profession much like carpentry or plumbing.

Not all welds require the same level of care and expertise.

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How do I calculate the strength of a weld joining two crossed rods?

While considering this recent question, I started wondering how to determine the strength of the welds in the steel mesh. As AndyT points out in his comment: The welds at the connections are only intended to keep the bars at right angles during…
Air
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How do you check a weld for applied moment?

I have a single angle connected to a double angle via a 3/16" weld I know there is a factored, applied moment at that connection. I would like to ask how I can go about checking the capacity of this connection for moment? There is a lot of stuff in…
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How should the welded corner of this bracket be detailed?

Consider the design of the bracket shown in the figure below (it is assumed that the anchors are sufficient and are not considered below). My question concerns the detailing of the welded connection detail and the overall strength of the bracket.…
egg
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Effective Throat of Flare-Bevel Weld with Reinforcing Fillet

Occasionally I have to design T-connections between rectangular tube steel (HSS) members where I have a flare-bevel weld between the corner of the tube and the connecting flat member. If the weld stress is high enough, a reinforcing fillet may be…
grfrazee
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Determining the microstructure of steel after welding in modern computer software

How can the microstructure of steel after welding be determined in modern computer software? I am aware that there are 'classic' methods of predicting microstructures like Schaeffler, DeLong or WRC constitutional diagrams. What I am wondering about…
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What does the abbreviation "B.C." mean on a weld joint diagram?

A translator posted this diagram of a weld joint on a translator's forum (the figure below). What does the abbreviation "B.C." mean on the diagram?
CopperKettle
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Does welding two metal parts together increases or decreases the strength locally there?

I have a structure made out of steel consisting of many thin rods and some of them are welded to each other. I conducted a simple FEA static structural analysis to determine if the structure would fail under the critical loading conditions or not.…
Rameez Ul Haq
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How does Electric arc welding compared to gas welding?

While focusing on Quality and strength of welded joints produced but both methods..
Umar
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Plugging a 25A device (Welder) on 10A house plug

I would like to plug a 25A welder on a 10A house plug. I understand that it will not accept full power or the circuit breaker would switch. However, my question is if I may run under some lower power setting: for instance setting 70A out of 200A on…
Adrian Maire
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What type is miter joint - Welding

Is miter joint in welding - butt joint or corner joint ? My example includes 45 degrees miter (90 degrees) angle on two SHS (Square Hollow Sections) - 50x50x3 [mm] Working with EN/ISO norms regarding welding and joint preparation. My opinion is…
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When is a convex weld finish required?

In weld symbols one can specify the finish of the weld. In flush weld, for example, one needs to level the weld into a flat surface. I can imagine when this is needed: if something is required to rest flat on the welded surface, an uneven weld…
S. Rotos
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Should a welded connection between strut and waler be designed to take compression load?

Temporary structures are usually constructed in a less precise manner than permanent structures. This is more so in a braced deep excavation where the walls are in constant motion as the excavation progresses downwards. During the assembly of walers…
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How can I make inside a LSAW pipe uniform and smooth?

I am using a LSAW 16mm(OD) pipe, and I need to have a smooth and uniform surface inside it so a piston can reciprocate easily inside it. What is the best and fastest way to remove the inside weld line? It is going to be part of a production line,…
Amir
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How to weld a copper flange with a Nickel alloy pipe?

I have a copper flange and I want to weld it to a nickel alloy pipe. Normally, which welding technique is used to join these two parts? Also what is the filler material to be used to weld a copper part with a nickel alloy part?
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Tangential nozzle on vessel - weld preparation

What is the proper and recommended weld preparation for true tangential nozzle on pressure vessel. Where can something about this thematic be found. EDIT
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