Register now to get rid of these ads!

Technical "Kool" way to Quench long panel welds Pronto!

Discussion in 'The Hokey Ass Message Board' started by Hollywood-East, Feb 12, 2016.

  1. Hollywood-East
    Joined: Mar 13, 2008
    Posts: 1,993

    Hollywood-East
    Member

    NCM_1097.JPG NCM_1099.JPG NCM_1094.JPG So I'm doing Qtrs. Butt welding 9' per side, We all know how long this will take doing the "Jump Around"! I have been doing this for decades, Quench with blow gun, Works Amazing, Only problem, I get tired of holding the damn blow gun....Till today! Found a cheap $8.00 blow gun from Walmart, scrap left over from a jeep bumper, an a magnet set-up from a dial indicator, could be substituted with any type of magnet, a piece of brake line, an hose from the hardware store, it allows you to lay down 3/4 of an inch Easily with Zero warpage! An a Much more uniform weldment as opposed to a Million cold start mountains... Cheer's
     

    Attached Files:

    Last edited: Feb 23, 2018
    Pinstriper40, j-jock, lilmann and 3 others like this.
  2. Budget36
    Joined: Nov 29, 2014
    Posts: 13,173

    Budget36
    Member

    So are you doing 3/4 in welds, quenching, the doing another 3/4 inch off the same weld, quench and repeat?
     
    Stogy likes this.
  3. Hollywood-East
    Joined: Mar 13, 2008
    Posts: 1,993

    Hollywood-East
    Member

    ExactlyOTE="Budget36, post: 11386165, member: 257791"]So are you doing 3/4 in welds, quenching, the doing another 3/4 inch off the same weld, quench and repeat?[/QUOTE]
    Exactly, start at one end an Go, Hit the air for a few seconds, cool to the touch...
     
    Pinstriper40 and Stogy like this.
  4. Hollywood-East
    Joined: Mar 13, 2008
    Posts: 1,993

    Hollywood-East
    Member

    NCM_1100.JPG Here's a 12" section welded in 7 minute's, in second picture I'm holding a aluminum straight edge to show No warpage..
     

    Attached Files:

    Last edited: Feb 23, 2018
    Stogy likes this.

  5. Budget36
    Joined: Nov 29, 2014
    Posts: 13,173

    Budget36
    Member

    Very cool! (no pun intended)...gonna have to try this out, thanks for the post!
     
    Stogy likes this.
  6. low budget
    Joined: Nov 15, 2006
    Posts: 5,566

    low budget
    Member
    from Central Ky

    I would like to see a video
     
  7. Hollywood-East
    Joined: Mar 13, 2008
    Posts: 1,993

    Hollywood-East
    Member

    Just thinking about it I did leave out one Key step, the blow gun I used had a restricted interface that threads in at the hose end, I drilled the toothpick size it comes with to 1/4 ... Now back to your regularly scheduled programming..
     
    j-jock and Stogy like this.
  8. Interesting idea! I'll have to give it a shot!

    Agreed that a video would be beneficial! ;)
     
  9. Hollywood-East
    Joined: Mar 13, 2008
    Posts: 1,993

    Hollywood-East
    Member

    KIMG2061.JPG KIMG2060.JPG For those that didn't get on board... Having a few... Welding up a couple round holes cut in a o/t Jeep, Zero warpage.. No there not the best I've done, but... Couple cocktails in... Still worth a try ... The whole point is, No warpage, An this took about 4-5 minutes, not as much cold start chicken $! An better penetration
     
    Last edited: Feb 23, 2018
  10. Rusty O'Toole
    Joined: Sep 17, 2006
    Posts: 9,657

    Rusty O'Toole
    Member

    I've done this with a plain air gun but never thought of making a magnetic tool. I like it.
     
    Hollywood-East and Pinstriper40 like this.
  11. Jalopy Joker
    Joined: Sep 3, 2006
    Posts: 31,174

    Jalopy Joker
    Member

    as stated , "Cool"
     
  12. Try back stepping your welds. That will help with warping.
     
  13. Hollywood-East
    Joined: Mar 13, 2008
    Posts: 1,993

    Hollywood-East
    Member

    After a few more... My only point is, a blow gun works fine... But when you have a long panel... Priceless...
     
  14. jvo
    Joined: Nov 11, 2008
    Posts: 267

    jvo
    ALLIANCE MEMBER

    Okay, I'll bite. What is back stepping a weld? And thanks to the OP. I'm going to try that.
     
  15. Tim
    Joined: Mar 2, 2001
    Posts: 17,086

    Tim
    Member
    from KCMO

  16. Dick Stevens
    Joined: Aug 7, 2012
    Posts: 3,710

    Dick Stevens
    Member

    Sometimes the best solution to a problem is also the easiest!
     
  17. Back stepping would be to start at the end on the right about four inches from that end , weld to end then go four inches left of that and weld to it. Continue that until you are all the way to the left. Of course have panel tacked all the way before starting. Let me know if you understand this. It is much easier to show than tell.
    It ends up distributing the heat better.
     
    ABONES likes this.
  18. oj
    Joined: Jul 27, 2008
    Posts: 6,454

    oj
    Member

    For those that think cooling a fresh weld with air prevents shrinkage, I'll point out that that is the precise method of how a 'shrinking' disc works. You get metal red hot and cool it quickly and it shrinks. It isn't about how quick you cool it, it is about how hot you get it.
     
    Just Gary likes this.
  19. john worden
    Joined: Nov 14, 2007
    Posts: 1,827

    john worden
    Member
    from iowa

    I too cool welds with compressed air but remain skeptical that all warpage can be eliminated.
    I've yet to see it.
     
    loudbang and Fitty Toomuch like this.
  20. Fortunateson
    Joined: Apr 30, 2012
    Posts: 5,331

    Fortunateson
    Member

    Does a quick cooling, air or water, make the weld more brittle? If not then this method would shrink the amount of work!
     
  21. Hollywood-East
    Joined: Mar 13, 2008
    Posts: 1,993

    Hollywood-East
    Member

    Well after welding over 18' butt welded (68 el camino full qtrs. Painting Black) With no warpage, Sorry... That straight edge is sitting on Said quarter, The whole point to this method is less cold start , better penetration, less grinding, faster ,Meaning more heat, sheet metal warp's, Take the heat out as fast as it goes in, I shared what works for me, An anyone that Care's to try... Perhaps it's not to "Everyone's" interest... Cheer's
     
  22. BJR
    Joined: Mar 11, 2005
    Posts: 9,814

    BJR
    Member

    How about shrinkage at a right angle to the weld, 90 degrees to your straight edge. That is the direction I would think it would shrink.
     
    RMR&C and john worden like this.
  23. Fitty Toomuch
    Joined: Jun 29, 2010
    Posts: 328

    Fitty Toomuch
    Member
    from WVa

    OP, are these all lap joints? I use air to cool also but on butt joints and still get warpage, laps can stand more heat.
     
    john worden likes this.
  24. earlymopar
    Joined: Feb 26, 2007
    Posts: 1,608

    earlymopar
    Member

    What does the air blast do to the shielding gas while you're welding (or are you using flux-core wire)? I've welded outside with my MIG setup and an occasional breeze would take away the gas shield and the weld would start to get porous.

    - EM
     
  25. Stu D Baker
    Joined: Mar 4, 2005
    Posts: 2,755

    Stu D Baker
    Member
    from Illinois

    You don't blast air while welding. After you weld a section, blast it with air. Has nothing to do with the shielding gas. It's all about keeping the panel cool.
     

Share This Page

Register now to get rid of these ads!

Archive

Copyright © 1995-2021 The Jalopy Journal: Steal our stuff, we'll kick your teeth in. Terms of Service. Privacy Policy.

Atomic Industry
Forum software by XenForo™ ©2010-2014 XenForo Ltd.