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  1. #1
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    Default Welding rust 6010 or 7018

    I'm putting a new floor in a 2t trailer and doing some rust repairs , after i removed the old floor (mission) the angle frame is rusty rust , still thick steel but dimply rust all through it . My fluxcore no good for this job , so out comes the stick , is 6010 or 7018 rods better for rust ? i tried 6013 but is too pooris and didnt work , just made a mess.

    What is the recommended angle when upside down overhead , is it poke it directly into the steel and drag it or angle the rod back and drag it ? only doing 3cm -5cm stitches and tacks. Is more amps better for rust or lesser amps ? Thoughts please
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  2. #2
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    Dec 2005
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    Default

    Nothing is good for rust, do do yourself favour do it properly and remove the rust then your 6013 should be fine.

  3. #3
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    Apr 2021
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    Adelaide
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    Default

    I think I'd want to clean it up a lot more before evaluating the viability of welding it. Some of it looks so bad a 6010 would blow it away.

    Do you have a welder that can run 6010?

    Jack

  4. #4
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    Quote Originally Posted by Jack Ryan View Post
    I think I'd want to clean it up a lot more before evaluating the viability of welding it. Some of it looks so bad a 6010 would blow it away.

    Do you have a welder that can run 6010?

    Jack
    I can swap the wires around if that's what you mean , put the electrode on the negative side ?

  5. #5
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    Quote Originally Posted by Iron triangle View Post
    I can swap the wires around if that's what you mean , put the electrode on the negative side ?
    Many modern welders won't run 6010 - it is not to do with the polarity. Have you tried? 6011 will be easier.

    Have a look at this: https://www.esabna.com/us/en/news/ne...electrodes.cfm

    Jack

  6. #6
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    Quote Originally Posted by Jack Ryan View Post
    Many modern welders won't run 6010 - it is not to do with the polarity. Have you tried? 6011 will be easier.

    Have a look at this: https://www.esabna.com/us/en/news/ne...electrodes.cfm

    Jack
    Thanks for the tip , Interestingly the Esabna mentions its a perfect rod for rust , i've got a heavy duty BOC stick welder that should do it. I'll get some 6011's and 6010's and 7018's and see what happens.

  7. #7
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    Apr 2021
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    Adelaide
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    Quote Originally Posted by Iron triangle View Post
    Thanks for the tip , Interestingly the Esabna mentions its a perfect rod for rust , i've got a heavy duty BOC stick welder that should do it. I'll get some 6011's and 6010's and 7018's and see what happens.
    I'd still clean the rust up and make sure there is a solid base for welding.

    Jack

  8. #8
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    Dec 2018
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    NSW
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    I wouldn't waste my time. Just replace the angle.
    Even with 5 hours labour and $200 of abrasives, you'll find yourself doing the job again in another 5 years when it rusts out, or you load falls thru it...

  9. #9
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    May 2011
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    Murray Bridge S Aust.
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    Thanks CK you took the words out of my mouth. It's false economy to mess around with a trailer like that, do the job properly or take it to the scrap metal merchants.
    I don't particularly like the drawbar and joints around it, it looks to me, a recipe for disaster???
    If something goes wrong, ie it falls apart on the road, your insurance may not cover it/you!!!
    You MIGHT get away with it, if it was a 6X4 750kg max, but 2 tonnes, NO WAY!!!!!
    Kryn
    To grow old is mandatory, growing up is optional.

  10. #10
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    Quote Originally Posted by KBs PensNmore View Post
    Thanks CK you took the words out of my mouth. It's false economy to mess around with a trailer like that, do the job properly or take it to the scrap metal merchants.
    I don't particularly like the drawbar and joints around it, it looks to me, a recipe for disaster???
    If something goes wrong, ie it falls apart on the road, your insurance may not cover it/you!!!
    You MIGHT get away with it, if it was a 6X4 750kg max, but 2 tonnes, NO WAY!!!!!
    Kryn
    Just relax guys its just heavy surface rust on the angle nothing structural or serious to worry about . The drawbar is fine and has no rust at all , the joints are the old chqr floor welds , the angle has plenty of meat on it under the rust. It's a big 12x6 trailer dual axle. The cross members are fine. Once the new floor goes down it will like brand new again . I bought the trailer as a project to practice welding on so it just a bit of fun. It has to pass a rego inspection so it will checked properly later.

  11. #11
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    May 2011
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    Going by your pic: https://metalworkforums.com/attachme...3&d=1643768097
    That does NOT look healthy. Is it possible to power grind/wire brush it and then take the pic in the same position again, please. My comments were going by what I see. It might be different after a good clean.
    Having dealt with trailers for nearly 50 years, I've seen some bodgie/dodgy repairs.
    Kryn
    To grow old is mandatory, growing up is optional.

  12. #12
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    Quote Originally Posted by KBs PensNmore View Post
    Going by your pic: https://metalworkforums.com/attachme...3&d=1643768097
    That does NOT look healthy. Is it possible to power grind/wire brush it and then take the pic in the same position again, please. My comments were going by what I see. It might be different after a good clean.
    Having dealt with trailers for nearly 50 years, I've seen some bodgie/dodgy repairs.
    Kryn
    You are correct it doesn't look healthy but its structurally ok imo , basically anything i couldn't penetrate with the welding pick is staying , if the pick goes through it then it gets replaced ,you can see the rusted wall and floor remains on the angle. Once i sand it that should look better. If the angle doesn't weld properly , worse case i'll glue and screw a 18mm plywood floor down , might seem a little dodgy but it works. The trailer is 20yrs old now but its still got plenty of life in it.

  13. #13
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    Cleaned up ok. I used a demolition hammer with a chisel bit on the angle to help clean it up. Photo shows one of the 3 piles of rust. The rust removal and new floor should give it another 10-15 years of service.
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  14. #14
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    Deck down , still gotta trim the rear floor on one side and do the sides , i ordered 3 sheets but only used 2 , there are 7 cross members so had a full day upside down welding underneath , also had a bit of splatter get into my ear , banged head on the axle trying to get it out , lol !
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