Tig Weld Rem.700 Bolt Face

Discussion in 'Advanced Gunsmithing & Engineering' started by jaclthr, Dec 27, 2011.

  1. jaclthr

    jaclthr Site $$ Contributor

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    Is the bolt face of a Remington 700 tempered, can you tig weld the bolt face without making it brittle or in any other way make it unsafe ?

    Thanks For Your Input

    jaclthr
     
  2. p17enfeild

    p17enfeild Site $$ Contributor

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    why are you wanting to weld it?
     
  3. jaclthr

    jaclthr Site $$ Contributor

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    A customer stuck a case do to pressure and tried to drill it out, it left dimples in the bolt from the drill and he wanted to know if it could be welded and refaced.

    jaclthr
     
  4. Minesweeper3433

    Minesweeper3433 45B/91F Site $$ Contributor

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    How did he drill it out that he damaged the bolt face? Just curios and want to make sure I don't do something like that.
     
  5. p17enfeild

    p17enfeild Site $$ Contributor

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    oh i see
    i think i would be inclined the bore the face out a may be .025'' and solder in a bush, a photo of the damage may be of help
    i my self would not tig ,mig or use brazing at that end of the bolt
    hope this help
     
  6. lelongcarabine

    lelongcarabine

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    I am a retired welder with many moons of certified TIG experience.
    IMHO! For a customers rifle? There are things you can weld and things you shouldn't. This situation demands a completely new bolt! Your liability is on the line! Warpage and distortion, improper heat treating , among other issues can create a very expensive "simple repair"
    However, Lets look at the minimum of what you would need to reweld that damage. #1. Access to a heat treating furnace. #2. Filler rod with Matching metallurgy. #3. Heat stop. #4 Bolt plug and purge tubing for internal purge of bolt.
    You will need to make a full penetration weld. No lack of fusion at the bottom corners of the drill holes.
    To much penetration and you will have a distorted firing pin hole or bolt head.
    Rockmount/Nassau Alloys has some outstanding chromemoly TIG filler rod that does not spit and sputter. It runs smooth. I do not know if the tensile strength is adequate for this application. I does work well on chrome moly receivers; pre-heat treated, investment casting repair. I do not sell or receive a commission if you decide to use this product. Heres the link; (look alloy steels on the left, click on Tartan and Tartan B(high strength)) Hope this helps? Greg
    http://www.weldit.com/product1.html
     
  7. Dans40X

    Dans40X Welder Site $$ Contributor

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    IF,
    the rifle is un-molested-
    Pull the bolt out of the rifle & send it to Rem for a $175.00 replacement bolt assy.
    OR
    Purchase an OEM Rem bolt assy on line-
    Compare bolts critical dimensions,drop into action,confirm headspace & hand the rifle back to your customer.

    Practice on your customers old/your new bolt!!!!!!!!

    I wouldn't TIG weld on my personal bolt nose's.
    That nose is silvered brazed & pinned in place.
    Practice makes Perfect!!!
    Good Luck!!!!
     
  8. lelongcarabine

    lelongcarabine

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    Dans40X brought up a VERY IMPORTANT POINT! Factory Remington bolts are made in 3 pieces. Handle, body and head. If you heat the bolt body/head braze joint beyond the brazing alloy melting point. You will have destroyed the process integrity of that joining technique. A replacement Remington or a PT&G Bolt would be a far better way to deal with the issue!
    The advise given to practice on your own bolt, is Wisdom at its finest! Greg
     
  9. jaclthr

    jaclthr Site $$ Contributor

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    I appreciate all the input and right now it is a practice piece, just wandering about the heat treatment, Great points Thanks Again.

    jaclthr
     
  10. Robert

    Robert

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    jadthr,
    All sound advices passed above.
    Personally, I would also inspect very cautiously the other action parts having been submitted to such an overpressure as well...
    -Is the chamber not ovalised?
    -The receiver reinforce slightly bulged?
    -The receiver lugs set back?
    -Blowback signs in the firing mechanism?........
    R.G.C
     
  11. Gundoktr

    Gundoktr

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    May 21, 2010
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    203
    I have extra rem 700 short action bolt bodies available, what are your needs?

    Emails please: Jkob60@msn.com
     

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