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What are the metallurgical processes that can occur in and around a weld?
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Butt-weld and grrove weld?
First, Butt-weld is short for a butt groove. Welding in a butt-groove starts at the throat of the butt-groove. The first weld point could be a tack-weld: holding the two materials to be welded together. The throat is measured and filler metal and electrode are determined to create the root pass.
What is peening in welding?
It is one way to "Stress Relieve" the weld joint. As the weld metal metal cools it contracts and hammering on the weld expands it. On thick sections it is done after every layer of weld. Often used when welding cast iron or other metals with a low COE (Coefficient of Expansion).
Is there required size for a seal weld per AISC?
The required size for a seal weld per AISC is eighteen foot length. AISC also specifies minimum weld size based on the thicknesses of the members joined.
What is the filet weld size required for weldolets to main pipe joint?
wildly welding main pipe the are fillet weld or butweld
What types of weld does not require chamfering?
v
How many weld processes are there?
over 150
Is it ok to weld gi pipe?
Gi weld not recommended . Because of gi coationg will be spoiled out . Puncture will be occur on the pipe weld .
Can fusion occur when atoms get weld together?
yeah
What has the author M M Hosseinioun written?
M. M. Hosseinioun has written: 'The influence of welding parameters and parent plate metallurgical characteristics on solidification of austeniticstainless steel weld metals'
Can you weld p91 without a purge on root run?
we cant weld p-91 withour purging bcoz otherwise oxidation will occur
What is flux coating?
When you weld steel you need to make sure that oxygen in the air is kept away from the weld while it's being formed. Otherwise the iron in the weld burns in the oxygen and forms a poor weld. Electric welding rods are generally coated with a flux which forms a gaseous shield around the weld point and keeps away the air. Some welding processes (MIG for example - MIG stands for metal inert gas) do not use a flux coating but have an arrangement where argon or CO2 is passed to the weld point to keep the air away in a different way.
Does stainless steel welding require gass?
Most welding processes produce a gas to prevent oxidation of the weld.
What is the name around the weld that becomes adversely hot?
its called flux
What is splatter in welding?
Splatter is drops of metal in and around the weld area.
What is your core competency for this position?
Depends on applicants expertise. If you are a welder, tell them what welding processes you knew, then what welding joint design you can weld and the welding position you can perform.
Which type of welding is strongest?
TIG welding. TIG welds can be closer to pure than other processes but the strength of a weld is determined by a variety of factors. The choice of filler material usually determines the strength of a weld. For example type 12018 electrode, using the SMAW process, can be used to weld almost any strength steel and the weld will have a tensile strength close to 120,000 lbs/square inch. Heat treatments, both pre and post, can alter a welds strength. Additions of alloying elements (flux and electrode coatings) can also improve weld strength.
How close can one weld be to another weld?
Depends on what you are welding, but generaly welds can meet, or even weld on top of a weld.
