Galvanized Welding Test

Date 04-18-2007 20:32

Didn't say which code, but if you are using D1.1,

....and If you are trying to use prequalified procedures you will need to make a provision to remove the coating at the locations of the where the welds will be placed, if you don't remove the coating before welding you will need to run a PQR and write a new WPS.

By welder387 Date 04-18-2007 22:48

I will be using the D1.1 code. I would like to have a procedure which has already been qualified using the 3/8 A36 plate with a galvanized coating. According to Section 4, (Fig. 4.32) a Fillet Weld Root Bend Test can be given to certify a welder or welding operator. I do have a WPS for a welding test using 1/2 inch galvanized plate set up in a Tee Joint for the fillet break test. According to section 4, Table 4.10 Fillet Option 1(Fig. 4.36) has to have one fillet break and one macro-etch. I would have to send this off to be tested and at $150.00 each, in order to certify 70 welders this could get costly. Our facility has a saw and a bender, so if I could give the test on 3/8 plate, I could cut it and bend it here. Thanks, Brian

By scott harrison Date 04-19-2007 18:36

Brian,
I am not sure what process you are running but I ran into the same problem as you, I was getting a lot of inclusions trying to weld through the galv. I finally qualified a WPS by gapping the joint 1/8" and using Lincoln innershield NR-202 (FCAW). But whatever you do, you will need to qualify it by testing. Hope that helps.