×
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!

*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

Specifications or Methods to Limit or Evaluate Residual Stamping Oil on a part

Specifications or Methods to Limit or Evaluate Residual Stamping Oil on a part

Specifications or Methods to Limit or Evaluate Residual Stamping Oil on a part

(OP)
Hello all, Does anyone know of or have experience with any specification or method to validate the amount of excess stamping oil on a part? We have a situation where we will be processing stamped parts into an Automotive OEM plant without washing and they are wanting some kind of 'test' to define or limit the amount of stamping oil as received.

Anyone have any suggestions? It would go a long way if we were to have an existing standard.

thanks

RE: Specifications or Methods to Limit or Evaluate Residual Stamping Oil on a part

We routinely take coils of incoming steel (which already have oil on them from the rolling mill to stop them rusting into oblivion on the trip to the stamping plant), send them through the press line, send them through the ASRS (automatic storage and retrieval system), and send them into weld (mostly spot for sheet metal, mostly MIG for heavier parts) without any mid-process cleaning. Parts that are finished locally go through ecoat which includes a cleaning step to remove residue before the actual ecoat dip. Parts that are shipped somewhere else for subsequent welding processes don't get treated here; whatever coating may be on them stays on them until final weld (so that they don't flash rust during shipment), at which point I know the bodyshell is going through multiple dip tanks for cleaning, preparation, ecoat, etc.

Which part of this process are you involved with, and who's complaining?

RE: Specifications or Methods to Limit or Evaluate Residual Stamping Oil on a part

I've heard this is catching on in Europe. No direct experience with the equipment.

https://amepa.de/en/produkte/ofis/

RE: Specifications or Methods to Limit or Evaluate Residual Stamping Oil on a part

(OP)
Brian, thanks for your response. I have a stamped part that goes into a much larger OEM assembly, that we have painted for years. All of our other customers similar parts are used unpainted. We have finally convinced this OE to go the unpainted route for cost savings. But now they are pushing for some kind of 'measurement or method' to warrant to them that they will not receive a part dripping with stamping lub.
Our stamper tells us that there are specs/methods out there but cant/wont share them with us. Thus my search
thanks

RE: Specifications or Methods to Limit or Evaluate Residual Stamping Oil on a part

What happens to the part on their end after they receive it? Do they weld it into a bigger assembly (seems odd to ever consider painting before weld) or is it attached by some other method? Is it subsequently cleaned and painted after it becomes part of the bigger assembly?

Is the customer of this part, a big multinational who are likely to have product acceptance standards, or a mom-and-pop shop who has someone who is worried for no reason?

RE: Specifications or Methods to Limit or Evaluate Residual Stamping Oil on a part

If they can't give a spec then you should offer 'looks good to us' as a criteria.

= = = = = = = = = = = = = = = = = = = =
P.E. Metallurgy, consulting work welcomed

RE: Specifications or Methods to Limit or Evaluate Residual Stamping Oil on a part

LPS for Ed. If nothing else, that reply would at least start the REAL conversation

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! Already a Member? Login



News


Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close