×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

SPOTWELDS BREAKING ON COATED CRS MATERIALS

SPOTWELDS BREAKING ON COATED CRS MATERIALS

SPOTWELDS BREAKING ON COATED CRS MATERIALS

(OP)
WAS WONDERING IS ANYONE HAD ANY ADVICE ABOUT SPOTWELDING COATED CRS MATERIAL, I.E.  GAX, PAINLOCK, GALVANEAL. WE COMPLETE PULL TEST BEFORE RUNNING PARTS, BUT IT SEEMS HALF WAY THROUGH WE FIND PARTS THAT THE SPOTWELDS START TO BREAK.?

RE: SPOTWELDS BREAKING ON COATED CRS MATERIALS

Watch your electrode sizes. The zinc alloys with the copper electrode quite readily. This erodes the tips making them bigger over the course of the welding run. When the tip grows too much your weld density suffers and you end up just melting the zinc and soldering the part instead of welding it. If you have a multistage controller then a short burst on high heat to melt the zinc and squeeze it away from the weld area before the main weld current occurs works best.
  Make sure your operators or setup men are dressing the electrodes before weld failure occurs
   Also could you please turn your caps lock off before responding, thank you.
B.E.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources