Groove prep for ceramic tape

[holdpt]

I will be doing a time study of full-pen welds with backgouging vs. full-pen welds using ceramic tape. We will run the typical 60 degree groove for backgouging but was hoping to cut down on the volume by moving to a 45 degree for the tape since the root opening is wider. Anyone have experience with suggested groove angles with the ceramic tape?

 

[Duwe6]

Depends on gap, weld process and the welder's experience & skill. For a 3/32" gap, 60-75° is typical. With a skilled welder that likes to run 'hot', an 1/8"+ gap, SMAW [or FCAW self-shielded], 45° may work.