Welding 1045, process and filler suggestions

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Has anyone found a good reference material for filler rod selection for given base metals?I'm going to be welding some steel plates to the bottom of some 1045 steel round bars soon. I have both TIG and MIG and was wondering what would be the best process for the strongest weld? These will be used as vertical cannons and want to make sure they wont go anywhere after they are fired.What would anyone recommend for wire or filler material?-TM
Reply:For filler and procedure, it would be kind of like welding 4130 chrome-moly tubing.  Except without the chrome or the moly, and a liitle more carbon.  You have 45 points of carbon in 1045 (0.45%), so you have to be aware of that.  No quenching, some pre-heat may be called for if the material thickness is greater than about 1/8", ER80 or ER70 filler will usually suffice (although it is a strength undermatch to the parent material, proper joint design and configuration and workmanship should be able to make up for material by having adequate filler where needed).http://www.lincolnelectric.com/knowl...hrome-moly.aspVertical cannons?  As in pyro cannons/mortars?  Overdesign it.  When you -think- you have it strong enough, triple it.    The best laid schemes ... Gang oft agley ...
Reply:Yes these are pyrotechnic mortars, specifically concussion mortars. These units are very over built. Rounds are 3" 1045 with a 1" bore, welded to a 3/8" x 6 x 6 steel plate.I have seen many with what I would considered to be inadequate welds so I wanted to make sure I used the right filler rods.I figured I would bevel the base of the round then do my root pass and then filler pass.-TM
Reply:I sure have.  http://www.alcotec.com/us/en/support...on_Chart-2.pdfMiller 330 a/bp water cooledI believe in gun control, I hold my gun with two hands.  If you want to know why, click here.Buy American or bye America.
Reply:Make the bore holes in the 'barrel' a blind hole instead of a through hole.  Then the weld is just attaching the baseplate to the 'barrel' and not subject to the internal ballistics pressure.  The best laid schemes ... Gang oft agley ...
Reply:These rounds are bored to 5" depth in a 6" piece so there is a 1" wall all around. Drilling all the way through, definitely should not be done. I have made several of these in the past for various projects, but have made them as a coffee mug style with a handle instead of a base plate. These one's are my own and will be getting a base plate. Originally Posted by MoonRiseMake the bore holes in the 'barrel' a blind hole instead of a through hole.  Then the weld is just attaching the baseplate to the 'barrel' and not subject to the internal ballistics pressure.