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3G SMAW E7018 root pass stick welding tips (STOP TRAPPING SLAG!)
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I'm running 125 amps in this video.
This quick welding tips video is my method to running the root pass on a vertical 3G 7018 AWS D1.1 plate test. This method will help you out if you're dealing with things like a convex weld bead profile, excessive undercut on the root pass, or worst of all the dreaded slag trapped at the toes of your weld (also known as wagon tracks).
When I'm running the root pass, I use a "Z" weave. I go straight across, and then up and over. I am pushing the stick rod into the bevel slightly, and when I see the puddle overtake the tip of the rod I know it is time to move on. I am not ever counting when I weld, if that works for you by all means continue but I find relying on my eye to be much more consistent than counting.
I help welders gain the skills required to pass the 3G 4G SMAW AWS D1.1 certification tests. Generally, I see the same things preventing people from passing the visual inspection on a 3G SMAW root pass. E7018 is known for a very fluid puddle that will fall right out of the joint if you're not careful. Make sure you hold a tight arc in the bevel. You also need to make sure you are weaving out wide enough, that will flatten out your bead tremendously. Holding the sides for enough time helps to fill in the undercut. Remember, every time you're stick welding you're cutting into the plate, you can think of undercut as "underfill."
Side note, there is a lot of debate about grinder usage on a test. I am a proponent of using a grinder on the test, but some people take it too far. No foreman or supervisor wants to see a welder grinding for 20 minutes and welding for 2. A grinder is a tool of the trade, and you need good grinder skills. However, you do not want to use a grinder as a crutch. If you weld the root pass like I show in this video, all you're going to need is a chipping hammer and a wire brush to clean your weld. AWS D1.1 is completely silent on grinder usage on the limited thickness 3/8" (9.525mm) plate test. Always check the WPS or with the inspector overseeing your test. D1.5 bridge certification however does state that no grinders shall be used by the welder during the test so if you're shooting for a bridge certification get used to doing it 100%.
I hope this quick welding tips 3G root pass SMAW 7018 electrode video helps you out if you're getting undercut, excessive convexity, or trapped slag. Subscribe to the channel for more short welding videos.
This quick welding tips video is my method to running the root pass on a vertical 3G 7018 AWS D1.1 plate test. This method will help you out if you're dealing with things like a convex weld bead profile, excessive undercut on the root pass, or worst of all the dreaded slag trapped at the toes of your weld (also known as wagon tracks).
When I'm running the root pass, I use a "Z" weave. I go straight across, and then up and over. I am pushing the stick rod into the bevel slightly, and when I see the puddle overtake the tip of the rod I know it is time to move on. I am not ever counting when I weld, if that works for you by all means continue but I find relying on my eye to be much more consistent than counting.
I help welders gain the skills required to pass the 3G 4G SMAW AWS D1.1 certification tests. Generally, I see the same things preventing people from passing the visual inspection on a 3G SMAW root pass. E7018 is known for a very fluid puddle that will fall right out of the joint if you're not careful. Make sure you hold a tight arc in the bevel. You also need to make sure you are weaving out wide enough, that will flatten out your bead tremendously. Holding the sides for enough time helps to fill in the undercut. Remember, every time you're stick welding you're cutting into the plate, you can think of undercut as "underfill."
Side note, there is a lot of debate about grinder usage on a test. I am a proponent of using a grinder on the test, but some people take it too far. No foreman or supervisor wants to see a welder grinding for 20 minutes and welding for 2. A grinder is a tool of the trade, and you need good grinder skills. However, you do not want to use a grinder as a crutch. If you weld the root pass like I show in this video, all you're going to need is a chipping hammer and a wire brush to clean your weld. AWS D1.1 is completely silent on grinder usage on the limited thickness 3/8" (9.525mm) plate test. Always check the WPS or with the inspector overseeing your test. D1.5 bridge certification however does state that no grinders shall be used by the welder during the test so if you're shooting for a bridge certification get used to doing it 100%.
I hope this quick welding tips 3G root pass SMAW 7018 electrode video helps you out if you're getting undercut, excessive convexity, or trapped slag. Subscribe to the channel for more short welding videos.
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