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Up Topic Welding Industry / Processes / Cleaning Process for Vacuum Brazing (OHFC Copper)
- - By shaked Date 09-08-2008 13:39
After machining, how should C10100 be cleaned?  I was thinking a rinse/wash/dry set-up, but I am not sure if this is completely overkill or not.  The original plan was to have a simple ultrasonic dip tank.  My biggest concern is not so much the staining left from coolant (which can be avoided), but the remnants of water on the parts when placed in the vacuum.  How dangerous can this be?  The vacuum will probably be 10^-3 torr, but it can be as deep as 10^-5 torr if necessary.  Partial pressure with Hydrogen is an option and Nitrogen will be used for backfilling.  I am not sure how fragile the pumps are to contaminants (water, coolant, etc.) so I do not know how much time should be spent on the cleaning aspect of this operation.  The parts will be full of coolant and chips so there will have to be some sort of dip.  I just don't know if a vacuum dry is necessary or if a heat/air dry is enough.

Does anyone have an experience with this type of application?  Any input would be greatly appreciated.  Thanks!
Parent - By Tomwalz (*) Date 09-08-2008 18:08
Vacuum pumps have traps in them to catch foreign materials.

When we vacuum braze we do our own cleaning anyway.    Get them free of soils, grease, chips, dirt and other soils. 

Check with the vacuum brazer and see how they want them.    
Up Topic Welding Industry / Processes / Cleaning Process for Vacuum Brazing (OHFC Copper)

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