This site is not affiliated with AGCO Inc., Duluth GA., Allis-Chalmers Co., Milwaukee, WI., or any surviving or related corporate entity. All trademarks remain the property of their respective owners. All information presented herein should be considered the result of an un-moderated public forum with no responsibility for its accuracy or usability assumed by the users and sponsors of this site or any corporate entity. | ||||||
The Forum | Parts and Services | Unofficial Allis Store | Tractor Shows | Serial Numbers | History |
How to fill holes in 3/4 steel plate |
Post Reply |
Author | |
BrianC
Orange Level Joined: 16 Jun 2011 Location: New York Points: 1613 |
Post Options
Thanks(0)
Posted: 03 Apr 2020 at 7:10pm |
I have a Lincoln 225 AC tombstone stick welder from the '70's. Poor skills in welding. .720 thick steel with .687 and .750 through holes. 4 holes total. Any advice on how to weld up the holes? |
|
Sponsored Links | |
Tracy Martin TN
Orange Level Access Joined: 11 Sep 2009 Location: Gallatin,TN Points: 10551 |
Post Options
Thanks(0)
|
Several ways. Steel plug and sew them up. Copper piece to weld against in center, then other side. There are others but these will do the trick. Stay clean and it will be professional. HTH Tracy
|
|
No greater gift than healthy grandkids!
|
|
Bill_MN
Orange Level Joined: 12 Sep 2009 Location: Sioux Falls, SD Points: 1463 |
Post Options
Thanks(0)
|
I've done holes before by putting a slug in the hole the same thickness or close and slightly smaller than the hole. Taper it back a little bit towards the top and bottom and just weld it in, then you don't have to fill the whole thing with weld.
|
|
1951 WD #78283, 1918 Case 28x50 Thresher #76738, Case Centennial B 2x16 Plow
|
|
thendrix
Orange Level Joined: 04 Feb 2013 Location: Fairmount GA Points: 4734 |
Post Options
Thanks(0)
|
Set screws welded in holes work very well
|
|
"Farming is a business that makes a Las Vegas craps table look like a regular paycheck" Ronald Reagan
|
|
jaybmiller
Orange Level Access Joined: 12 Sep 2009 Location: Greensville,Ont Points: 21451 |
Post Options
Thanks(0)
|
one way... 1/2" sections of 5/6 and 3/4 bolts. place 1/8" washers in holes, then 'slugs', weld them in. turn over plate, fill the voids where the washers were. other way... copper under plate, fill holes with weld, a little into each hole,next hole, repeat until filled. hint: Use E7018AC rods. Be sure it says AC at the end !! Easy to remember... AC !!! They are totally different than E7018. They weld REAL nice and easy. The ONLY rod I've bought in 30 years...... can weld tin thin rider decks to big A trailers, ALWAYS get a great weld. I usually use 1/8" rod at 105 amps. |
|
3 D-14s,A-C forklift, B-112
Kubota BX23S lil' TOOT( The Other Orange Tractor) Never burn your bridges, unless you can walk on water |
|
Dusty MI
Orange Level Joined: 13 Sep 2009 Location: Charlotte, Mi Points: 5053 |
Post Options
Thanks(0)
|
Jay,
Have you ever tried 7014 AC rods? Dusty
|
|
917 H, '48 G, '65 D-10 series III "Allis Express"
|
|
DrAllis
Orange Level Access Joined: 12 Sep 2009 Points: 19475 |
Post Options
Thanks(0)
|
You don't say what the purpose of the plate is when you get done filling the holes ?? Take a thread tap and make threads and screw in a bolt and cut it off on both sides and grind flush. Tack weld to retain.
|
|
SteveM C/IL
Orange Level Access Joined: 12 Sep 2009 Location: Shelbyville IL Points: 7970 |
Post Options
Thanks(0)
|
Does it just have to look pretty or does it function(seal)
|
|
BrianC
Orange Level Joined: 16 Jun 2011 Location: New York Points: 1613 |
Post Options
Thanks(0)
|
Draw bar on a garden tractor. The thing is weak enough as it is, and has z bends and such, otherwise I would make a new one. So structural. I have used a copper backing plate (and wire feed) for 16 gauge, so I get the idea. But this is 3/4 deep. I have a lathe, I can turn up some chamfered thin buttons and set in the middle, then I got 1/2 the depth to weld, but from each side, better for distortion I would imagine. Could also make a copper spud in the hole to get started. What type, rod size and amp setting? Same size/amps if I go either method (copper back plate vs centered button)? I have my doubts as to my welding skill- I will be welding in a hole, could I see the pool, what motion, sl*g build up... I want to do it this weekend. Thanks
|
|
steve(ill)
Orange Level Access Joined: 11 Sep 2009 Location: illinois Points: 77629 |
Post Options
Thanks(0)
|
the 7018 or 7014 AC rods are OK... I prefer to use 3/32 rod on 90% of my jobs.. It welds slower with less fill than 1/8 rod and easier to control... LIke you said, a button in the center and then you have less than half the 3/4 inch depth on each side. You can use a circular pattern or go across as stitching.. The MAIN THING is DONT WELD OVER THE sl*g.. Make a couple stitches or a circle pattern, then STOP and chip off the flux.. THen do a couple passes again... Weld must be over METAL, dont go over the FLUX/ sl*g.
why cant you write s-l-a-g ??? Wont accept that word... Keeps putting in the * instead of "a" ?? Edited by steve(ill) - 04 Apr 2020 at 12:39pm |
|
Like them all, but love the "B"s.
|
|
DanWi
Orange Level Access Joined: 18 Sep 2009 Location: wttn Points: 1704 |
Post Options
Thanks(0)
|
Be careful if you dont know what you are doing there as you stated this was a week drawbar and you are trying to strengthen it by welding hole shut but the heat may change the metal and it will end up breaking there. Experts can go into more detail and tell you how to avoid problem usually involves heating and slow cooling.
|
|
DMiller
Orange Level Access Joined: 14 Sep 2009 Location: Hermann, Mo Points: 29433 |
Post Options
Thanks(0)
|
If heat it thru welding to keep the strength that was there prior will need to reheat the entire assembly up and anneal it. Otherwise as noted the weak spot will be to either side of the welded area.
May in the long run be better off to produce a replacement with holes or solid where you want them. |
|
jaybmiller
Orange Level Access Joined: 12 Sep 2009 Location: Greensville,Ont Points: 21451 |
Post Options
Thanks(0)
|
I just buy E7018AC, brand name... it's workewd for me for past 30+ years.... I do KNOW it HAS to have AC on the end when using an AC welder(buzzbox)... btw s-l-a-g is a 'bad word', I don't know why....maybe google does...
|
|
3 D-14s,A-C forklift, B-112
Kubota BX23S lil' TOOT( The Other Orange Tractor) Never burn your bridges, unless you can walk on water |
|
Post Reply | |
Tweet
|
Forum Jump | Forum Permissions You cannot post new topics in this forum You cannot reply to topics in this forum You cannot delete your posts in this forum You cannot edit your posts in this forum You cannot create polls in this forum You cannot vote in polls in this forum |