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Bend/stress testing a tube to flat weld?

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发表于 2021-9-1 00:06:35 | 显示全部楼层 |阅读模式
What is a good way to test a tube to flat/angle weld? At first I just put the angle side in a vise and bounced up and down while hanging on the end of the tube. Then I moved over to the 1.75ton arbor press and put the ram close up by the weld and hung off the downfeed bar enough to squish the tube and deform the angle bar. I flipped the material over and did the same to the other side trying to get the weld to break, crack, pull away, whatever. What is a better way to test the total strength of this joint?Tube is 4130 .065 wall, angle is 3/16 standard hot roll. I was using 1/16" R45 filler but my go to E70S2 if I can get the welds to crack or break.I know the nipple stop is bad in the pic below.
Reply:Welding .065 to  .187 only needs a .065 bead.  Yours is a little big, try smaller weld and less heat.That means the legs of the bead or parts of this L only to be .065" wide. or .0919 across the flat. (the part you see)DavidReal world weldin.  When I grow up I want to be a tig weldor.
Reply:A different approach would be to skip weld instead, and test that.   If it is strong with a partial weld, then clearly it would be plenty strong with a full weld.   The problem with testing a full weld is that it takes a lot of stress to break it.The other way to look at it is that you stressed it quite a bit, and proclaim victory rather than do further testing.RichardSculptures in copper and other metalshttp://www.fergusonsculpture.comSyncrowave 200 Millermatic 211Readywelder spoolgunHypertherm 600 plasma cutterThermal Arc GMS300 Victor OA torchHomemade Blacksmith propane forge
Reply:The skip welding idea is a good one, I may give that a try. I may also run this joint over to my buddies and throw it in his 20 ton press to destroy it and see what happens.
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