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Letter 26029
Tungsten carbide inserts get brown
patches from cleaning
+++
We are facing problems in cleaning of tungsten carbide inserts.
The inserts are getting brown patches on ce we dry the inserts after
cleaning. The process is as follows.
1. Tank 1 - Acidic medium,60deg Cel,with ultrasonics,30 sec
2. Tank 2 - Demin water,60 deg Cel, with ultrasonics,30 sec
3. Tank 3 - Demin water,60 deg Cel, w/o ultrasonics,30 sec
4. Tank 4 - Demin water,60 deg Cel, with ultrasonics,30 sec
5. Tank 5 - Demin water,60 deg Cel, w/o ultrasonics,30 sec
6. Tank 6 - Demin water,60 deg Cel, with ultrasonics,30 sec
w/o - without.
Note: Tanks 1,2,3 and 5 have circulation system with filters of
25,10,5 and 3 microns respectively. Could you kindly throw us light
on the problem.
Mr. Ravishankar. S
Asst. Manager - Production Engineering - Bangalore, , Karnataka,
INDIA
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