Where to Start at Being a Welder
This is for the AWS D1.1 (1G, 2G, 3G, and 4G) SMAW. Now that must seem like a lot of mumbo jumbo. Let me explain, there are different positions of welding. You can be tested for any of the G's. 1G is flat welding. 2G is horizontal welding. 3G is vertical welding. 4G is overhead welding. You don't have to pass all of them to get your certification.
This is my opinion, send in a flat test piece (1G), since its the easiest to do, and see how well you do. If you are good at horizontal and pass, you will be certified for 1G, 2G, and 3G. Just something to think about.
Your preparation is half of the weld test. Good preparation will help insure you pass the test.
The Test Piece
You will have to make your own test piece. This requires 2 steel plates 1 in. thick. and a backing plate. See the bottom picture for a better understanding. On one side of Both plates should be an angle of 45 degrees.
Grind about 3 inches from the angle to get all the coating off the metal. (See Picture). On the backing piece, grind all of one side.
Put the backing piece under the two plates and leave a gap in between. Also, place some scrap metal pieces of equal thickness of the backing piece under both plates to make everything straight. The gap between the to plates should be 2 electrodes (rods) thick. You will be using 7018 rods.
Weld that Sucker!
1. Whichever weld you are doing fill up the gap then grind till its flush with the plates. 2. After being flush, now this depends on the criteria, weld 3 beads on top of the gap.
After welding and grinding
The bead on top is not three, it is a weave. It is easier to do. If you can do this, do it. It depends on the criteria.
Now, lines need to be marked horizontally on the test piece 1 1/2 in thick.
This will be Cut into Strips and the Backing Bar Removed
The strips will be bent in the Bend Test.
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