Announcement

Collapse
No announcement yet.

Rust after weld

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

  • Bert
    replied
    JHCHOPPERS and everyone else! Thanks for all the info!
    bert

    Leave a comment:


  • Antonio Ferniza
    replied
    That is what I wanted to hear.. ... I agree with the paint issue, this is a dry - oven paint process, and don´t think that something may be wrong with the weld, CO2 could leave kind of a soot if it is used in excess, but I have 95/5 mix very well controlled, let me do some research on the paint process and see if something is wrong...

    I appreciate your help/opinions guys!!!

    Leave a comment:


  • Antonio Ferniza
    replied
    Thanks guys!!! That is what I wanted to hear.. ... I agree with the paint issue, this is a dry - oven paint process, and don´t think that something may be wrong with the weld, CO2 could leave kind of a soot if it is used in excess, but I have 95/5 mix very well controlled, let me do some research on the paint process and see if something is wrong...

    I appreciate your help/opinions guys!!!

    Leave a comment:


  • beamwalker
    replied
    i paint immediadly after welding for the baked on look

    Leave a comment:


  • JHCHOPPERS
    replied
    Bare Metal needs to be Etched Primed before Primer is applied. Blow off all the loose dust, wipe it down with Final Klean, then Tack Cloth it off. Apply the Self-Etch Aerosol Primer to the bare metal, this will bite into the raw metal so the primer will stick.

    If you want to learn more about about painting, click the link:

    http://www.jhchoppers.com/projects/paint/paint.htm



    Hope this helps a little....

    Leave a comment:


  • dabar39
    replied
    paint prep

    I would tend to agree with these other guys, clean it real good and use a primer and top coat. I have seen some guys use water based coatings and got the same results you got.
    Dave

    Leave a comment:


  • tommyj3
    replied
    Use a better grade of primer and color top coat.

    Leave a comment:


  • phaxtris
    replied
    i agree, wrong paint/prep

    Leave a comment:


  • TS-Off-Road
    replied
    Welds are fine, just poor paint prep. If possible I usually abrasive blast parts that need paint then wipe down with some naphtha or acetone. Epoxy prime, some urethane, and it's as good as it's gonna get.

    Leave a comment:


  • Wheelchair
    replied
    Looks like you need to paint it with a good quality primer before applying your finish coat.

    Wheelchair

    Leave a comment:


  • Antonio Ferniza
    started a topic Rust after weld

    Rust after weld

    Hi Guys! I have a problem, I am MIG welding on carbon steel, after a while when the part is welded and then painted, it comes up some rust on the weld areas, do you know what may cause this defect, how can avoid this? Here is a picture of the defect.

    Thanks!!
    Attached Files
Working...
X