What is an unequal fillet weld?
un-equal leg sizes are OK. “unequal leg fillet welds”, fillet weld size is defined as, “the leg lengths of the largest right triangle that can be inscribed with the fillet cross section” I have never specified a unequal leg size. But, note that the actual strength is relative to the leg size and the material strength.
What is a continuous fillet weld?
Continuous welds, whether fillet or butt, span the entire length of the join. An intermittent weld is one where the pieces appear tacked together. There could be one inch of weld – fillet or butt – then an inch or more of unwelded length before the next weld. There are pros and cons to the two methods.
What is intermediate fillet weld?
An intermittent fillet weld is one that is not continuous across a joint. Intermittent welding is used when either a continuous weld is not necessary, or when a continuous weld threatens the joint by warping. In some cases intermittent welds are staggered on both sides of the joint.
What is double fillet weld?
Fillet welds are one of the most common weld types in the industry. This weld is used when the joint has two members coming together to form an intersection of commonly 90 degrees. When a fillet weld is required on both sides of the reference line it is called a double fillet weld.
What is the weakest plane in fillet weld?
For a given amount of weld material, the fillet weld is not as strong as due to the heavy concentration of the stress. ∴ For fillet weld, the weakest plane is along the throat section.
What is a staggered weld?
[′stag·ərd ‚in·tər′mit·ənt ′fil·ət ‚weld·iŋ] (metallurgy) Making a line of intermittent fillet welds on each side of a joint in a manner such that the increments on one side are not opposite to those on the other side.
What are the 3 types of fillet joints?
Tee Joint, Lap Joint, and Corner Joint.
Can you XRAY a fillet weld?
In your case a fillet weld can be tested using radiography as well as ultrasonic. This technique will reveal most of the discontinuities within the weld and gross discontinuities at the fusion face and weld root. This technique will not reveal lack of fusion along the fusion faces.
What is a 6mm fillet weld?
Fillet welds are defined by the size of the leg length e.g. a 6 mm CFW is a continuous fillet weld having a leg length of 6 mm.
What are the 3 main types of welding?
Three of the most common are Arc, MIG (Metal, Inert Gas) or GMAW (Gas, Metal Arc Welding), and TIG (Tungsten Inert Gas) welding. In order to know which process is best for the particular job you’re working on, here’s what you should know about each of them. Arc welding is the oldest of these three welding processes.
What is the strongest weld joint?
The absolute strongest weld that can be made in routine applications would be a type of weld made via the welding technique of Tungsten Inert Gas (TIG) Welding, also known as GTAW welding. TIG welders are known for creating clean and strong welds.
What is effective throat thickness?
Explanation: Effective throat thickness is the shortest distance from the root of fillet weld to face of diagrammatic weld(line joining the toes). The effective throat thickness should not be less than 3mm and it should not exceed 0.7t or 1t, where t is thickness of thinner plate of elements being welded.
What are the problems with fillet welded joints?
One of the greatest problems associated with fillet welded joints is achieving the correct weld size in relation to the required leg lengths or throat thickness ( Fig.4 ). The designer may calculate the size and allow a ‘safety factor’ so that the weld specified on the fabrication drawing is larger than is required by design considerations.
Why are fillet welded joints not open to volumetric NDT?
Fillet welded joints are not always open to volumetric NDT, which may be seen as unjustified due to the difficulties in inspecting, such as access for the film location in RT, and highly time-consuming inspection techniques with UT, where the results are often difficult to interpret.
How are fillet welds used in structural welding?
What is a fillet weld? 1 The most common and easiest type to produce in structural steel field welding. 2 Often used in welded connections with T, lap and corner joint configurations, though it can be found throughout a project. 3 Is generally visually inspected and rarely requires additional quality assurance testing.
Can a fillet weld be done with a groove weld?
Often, more labor can be dedicated to fillet welds as needed, which may not be possible with groove welds if an operation doesn’t have as many highly skilled welders who can complete them. Now that you’ve learned about the basic welds on a jobsite, learn how you can improve productivity on your more complicated welds.