Full penetration fillet welds
As an example, refer to the T joint and fillet weld in Figure 3. The required weld strength is achieved by having complete fusion and by producing the proper fillet .
6. REFERENCES
To compensate for this reduction in throat thickness it may be necessary to specify a deep penetration fillet weld. This amount of additional penetration would.
Fillet welds may be combined with full or partial penetration butt welds - a combination weld. The designer is therefore required to decide whether to use a T-butt.
Description:High restraint and increased carbon equivalent values associated with thicker plates and higher steel grades may demand more stringent procedure controls. Further informative Annexes in BS EN [7] describe the influence of welding conditions on HAZ toughness and hardness and give useful advice on avoiding solidification cracking and lamellar tearing. The use of this notation tells the welder exactly what is expected from the manufacturer. Note also that with a CJP groove weld, the size of the weld does not determine weld strength either, as it does with a fillet weld. The gas shield is susceptible to being blown away by draughts, which can cause porosity and possible detrimental metallurgical changes in the weld metal. Typically the depth of the throat should be at least as thick as the thickness of metal you are welding.
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