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
RE: FUEL PUMP PARTS -CONTAMINATION
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
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