×
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

FUEL PUMP PARTS -CONTAMINATION

FUEL PUMP PARTS -CONTAMINATION

FUEL PUMP PARTS -CONTAMINATION

(OP)
WE HAVE TO DECIDE ON A SUITABLE CLEANING SYSTEM TO REMOVE CONTAMINANTS OF PARTS THAT ARE ASSEMBLED ONTO ARMATURE AND BRUSH BOX ASSEMBLY WHICH CONSISTS OF MATERIAL LIKE PPS,SS,COPPER,STEEL.CAN ANYBODY RECOMMEND A SUITABLE MEDIA OTHER THAN TRI CHLORO ETHYLENE WHICH HAS BEEN BANNED NOW TO HAVE EFFECTIVE REMOVAL OF CONTAMINANTS .

RE: FUEL PUMP PARTS -CONTAMINATION

Are you looking to clean the parts before or after assembly?  What types of contaminants are you trying to clean off?

RE: FUEL PUMP PARTS -CONTAMINATION

(OP)
we propose to have three stages of cleaning.

stage 1:clean of all incoming parts -oil,fibre ,any other dust

stage 2: do assembly operation in a clean room atmosphere-e.g welding/and manual assembly process as well as testing

stage 3: cleaning of the total sub assembly:armature/brush carrier assembly by suitable means and ensure the packaging is also finished in the clean room

the contmainants are mainly fibre ,dust ,oil etc.

RE: FUEL PUMP PARTS -CONTAMINATION

First suggestion would be (assuming your components are coming from subcontractors) to specify that parts received shall be cleaned and packaged in order to meet your cleanliness requirements.  At that point, you should be able to just clean or wipe down the packaging prior to entering your controlled environment.

For fibers and dust, I would suggest a good vacuum system.  Blowing particles around with CDA (clean dry air) just gives the particles a chance to settle somewhere else.  The oils and films can be a challenge.  You might start by talking to the manufacturer of the oil used to determine a recommended cleaning solvent and method.  Otherwise you may end up doing some "trial and error" testing.  Ultrasonic cleaning and rinsing can work well if your parts are relatively small.  Use high purity low residue materials.  Dry Ice blasting might also work but I do not have any experience with the method personally.

Welding should use high purity gasses and you should have a fume/smoke extraction apparatus.  Again, a vacuum system may work well.

Try to use a "just in time" method of assembly to avoid prolonged exposure of parts to the enviroment (even if clean) otherwise you may find that more time is spent cleaning than assembling.

Good luck

RE: FUEL PUMP PARTS -CONTAMINATION

(OP)
nice suggestion.thankyou.

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