Welding Positions and Symbols

Welding Positions

 

The four basic welding positions for fastening square measure flat, horizontal, vertical, and overhead. they're conjointly selected with a variety of systems to help in brevity in oral or written language.

They are defined as follows fastening Welding Positions:

Weld Positions

 

•  The flat position (F1) is the welding position accustomed weld from the top of the joint at a degree wherever the weld axis is around the horizontal and therefore the weld face lies in AN around the horizontal plane.

•  The Horizontal position (F2) is the filet fastening position during which the weld is on the top of AN around the horizontal surface ANd against a surface. For groove welds, it's the position during which the weld face lies in AN around the vertical plane and therefore the weld axis for the purpose of fastening is around

•  The Vertical position (F3) is the fastening position during which the weld axis for the purpose of fastening is around the vertical, and therefore the weld face lies in AN around the vertical plane. fastening travel is also up or down. once travel is up, the fastening finish of the conductor or torch is pointed upward at AN angle, earlier than the weld. once the travel is down, the top of the conductor or torch is pointed up ANd at an angle to the weld pool. The travel direction up or down is a necessary variable in most codes and so the artisan should follow what's explicit and tested in the fastening procedure.

 

• The Overhead position (F4) is the fastening position during which fastening is performed from the bottom of the joint. The overhead position is the reverse of the flat position. the different positions of fastening. welds and fastening positions. once discussing groove welds, a “G” is employed and variety is assigned to indicate the fastening position.

Plate Weld

 

Pipe Weld Designations are:

Pipe Weld

1G flat position groove weld

2G horizontal position groove weld

3G vertical position groove weld

4G overhead position groove weld

Pipe Weld Designations are:

welding position

1G flat position groove weld, pipe axis is horizontal, and therefore the pipe is turned

2G horizontal groove weld, pipe axis is vertical

5Gmultiple-position (overhead, vertical, and flat) groove weld, pipe axis is horizontal, and therefore the pipe isn't turned

6G and multiple-position groove weld,

6GRpipe axis is 45° from the horizontal, and therefore the pipe isn't turned. The R designates a limiting ring. 122 represents a graphic read of

used and variety is assigned  to indicate the

welding position

Plate Positions square measure selected as:

1F flat position filet weld

2F horizontal position filet weld

3F vertical position filet weld

4F overhead position filet weld

Pipe Positions square measure selected as:

1F  position filet weld, pipe axis is 45° from the horizontal, and therefore the pipe is turned

2FR horizontal filet weld, pipe axis is horizontal, and therefore the pipe is turned

4F overhead filet weld, pipe axis is vertical

5F multiple-position (overhead, vertical and horizontal) filet weld, pipe axis is horizontal, and therefore the pipe isn't turned

6Fmultiple-position filet weld, pipe axis is 45° from horizontal, and therefore the pipe isn't turned

6G fastening position

D positions on plate and pipe.

The positions simply delineated square measure artisan check positions. The weld check plates or pipes ought to be positioned as those illustrated as doable. However, in production

Welding it's not perpetually doable to own the joint axis and weld face rotations lined up vertically, horizontally, or at forty-five a way to calculate the fastening position for production welds that aren't simply determined. to use these diagrams you want to visualize the axis of the weld and therefore the rotation of the weld face and apply it to the tabulated data.

The trend in most retailers is toward fastening within the

Flat and horizontal positions were doable. fastening in these positions will increase the speed of fastening,

Allows a lot of flexibility within the alternative method, and ensures work of higher look and quality. Vertical and overhead fastening notice their widest application in those industries wherever the fabrications square measure massive and permanent. Such conditions exist in shipyards, on construction comes, and in piping installations. Vertical fastening is completed a lot usually than overhead fastening, and most welders notice it a more easy position to weld in. However, welders should be ready to weld altogether positions. Inability to try to thus limits their prospects of advancement to the next

Job classification prevents them from taking advantage of all the work opportunities they'll

Encounter