Free 186 More Best Homemade Tools eBook:  
Get 2,000+ tool plans, full site access, and more.

User Tag List

Results 1 to 4 of 4

Thread: Submerged arc welding - videos

  1. #1
    Content Editor
    Supporting Member
    Altair's Avatar
    Join Date
    Aug 2013
    Posts
    11,725
    Thanks
    1,353
    Thanked 29,248 Times in 9,724 Posts

    Submerged arc welding - videos

    Submerged arc welding (SAW) is a welding process where the molten weld and the arc zone are protected from atmospheric contamination by being submerged under a blanket of granular fusible flux.






    Previously:

    Friction welding drill pipe for oil exploration
    Basket welding - GIFs
    Cold welding GIF
    Pile cage welding machine - video
    Friction stir welding - GIF, video, and images
    Slow motion linear friction welding of titanium - GIF and video
    Passivating welds with electrolytic cleaning - GIF and video

    186 More Best Homemade Tools eBook

  2. The Following 2 Users Say Thank You to Altair For This Useful Post:

    ranald (Mar 23, 2019), Seedtick (Mar 23, 2019)

  3. #2
    Supporting Member baja's Avatar
    Join Date
    Dec 2017
    Posts
    249
    Thanks
    7,599
    Thanked 81 Times in 59 Posts

    baja's Tools
    I knew a guy that was by most accounts a
    great underwater welder. I never saw any of his underwater welds but his above-water welds looked atrocious. Maybe his glasses that looked coke-bottle-thick had something to do with it.

    2000 Tool Plans

  4. #3
    Supporting Member ranald's Avatar
    Join Date
    Jan 2018
    Location
    Black Mountain Queensland
    Posts
    1,326
    Thanks
    988
    Thanked 361 Times in 253 Posts

    ranald's Tools
    beyond my scope.

  5. #4
    Supporting Member
    Join Date
    Sep 2012
    Location
    Hinchinbrook QLD
    Posts
    323
    Thanks
    44
    Thanked 138 Times in 84 Posts
    Any welder diver worth his salt should be able to lay down perfect beads in any position above the surface
    Quote Originally Posted by baja View Post
    I knew a guy that was by most accounts a
    great underwater welder. I never saw any of his underwater welds but his above-water welds looked atrocious. Maybe his glasses that looked coke-bottle-thick had something to do with it.
    Corrective vision would have nothing to do with it. If his dry welds were crap, then his wet welds would not be acceptable.

    Underwater welding is done on DC and the workpiece is connected to the positive. It uses a special, waterproof, electrode that is held against the work (meaning you dont maintain an arc gap). They still get consumed as normal. The HAZ in wet welding is atrocious due to the rapid cooling and is generally only performed for temporary repairs, patches etc. or for non critical joins, eg sacrificial anode attachment.
    Any critical repairs, eg pipelines, are usually performed in habitats.

    You can teach a diver how to weld, but its much easier to teach a welder how to dive.



    186 More Best Homemade Tools eBook

  6. The Following User Says Thank You to 12bolts For This Useful Post:

    Frank S (Mar 24, 2019)

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •