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Here are some of my first welds. Never TIG welded before. Let me know what you think. Pretty much learned to TIG weld by watching Jody on Welding Tips and Tricks. I am using a Longevity 160SX, 140 amps on the foot pedal, 3/32 2% Lanthanated and 3/32 4043 filler wire. Also using about 15 CFH pure argon. The beads I ran are pictured left to right.Chad Attached Images
Reply:Knowing the material thickness would help.All but the last two are cold and need more amps. Last one is way too hot. 2nd from the right is "fair" at best. It's the only one that starts to look like you were getting close on your heat. Dip spacing could be tighter and you need to work on consistency. The last part at the bottom of this bead starts to look fairly good.For 1/8" material, I'd bump up the amps to at least 150 amps. You want to get the puddle going fast. Personally I set my machine higher, and back off faster on the pedal once the puddle forms.I know Shovelon's a big proponent of learning tig by running alum. I prefer to have students start with steel myself as I find they have an easier time with steel than alum because steel allows you to run a bit slower and see what is happening easier. No matter which way you choose, you need to start with the basics and keep running beads until you have the motions down to the point where you can do all of this without thinking about it..No government ever voluntarily reduces itself in size. Government programs, once launched, never disappear. Actually, a government bureau is the nearest thing to eternal life we'll ever see on this earth! Ronald Reagan
Reply:Some new ones I just did. On bead five and six, the 1/8th inch aluminum was getting real warm. Attached Images
Reply:Looking better.Note you need to keep the alum "cold" for practice. If you keep running bead after bead, the material will heat up and act like you are running more amps than you actually are. Alum looses it's strength many times once heated above about 300 F. You combat this in the weld zone by the use of filler. You run hot and fast so you don't heat the whole piece up and keep the total heat input down to the smallest area possible.You need to work with several pieces and possibly cool them down between beads. I usually tell students that if they can pick up the coupons with their bare hands, it's cool enough to run another bead on.The two beads on the left look the best. I like the dip spacing on the farthest left one, but it's a bit too hot. The next one over is pretty close in heat, but I'd have liked to see the dip spacing a bit tighter myself. The end at the bottom started to get a bit wide between dips. Keep practicing. You are doing very well so far compared to many I work with..No government ever voluntarily reduces itself in size. Government programs, once launched, never disappear. Actually, a government bureau is the nearest thing to eternal life we'll ever see on this earth! Ronald Reagan |
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发表于 2021-8-31 23:09:23