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Client #49

Metal

Manufacturers of Precision Parts and Assemblies

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Project Number 1

Summary:

Chemistries were selected and ultrasonic cleaning suggested for the replacement of perchlorethylene.

Test Objective:

To possibly develop a system to replace a vapor degreaser
Trial Number Date Run Purpose Success Rating
0 10/10/1996 Evaluate cleaning efficiency of aqueous cleaners Preliminary compatibility tests on substrate coupons encouraging for at least one cleaning chemistry. More in-depth laboratory testing necessary.
1 10/23/1996 To determine cleaning chemicals and equipment Results successful using TACT (time, agitation, concentration, and temperature, as well as rinsing and drying) and/or other cleaning chemistries examined.
2 11/20/1996 Test results from cleaning analysis on parts Technology Transfer.

Project Number 2

Summary:

Colorimetry was suggested and tested as the method for bath monitoring. Readings were correlated to cleaning efficiency.

Test Objective:

Second attempt to establish cleaning process

Product Use:

automotive industry
Trial Number Date Run Purpose Success Rating
0 10/22/1997 Compare aqueous cleaners to perchloroethylene Results successful using TACT (time, agitation, concentration, and temperature, as well as rinsing and drying) and/or other cleaning chemistries examined.
1 10/29/1997 Evaluate cleaning on large number of parts A follow up test, usually based on company input.
2 04/02/1998 Evaluate cleanliness of parts A cleanliness study, addressing only various analytical techniques.
3 04/02/1998 Measure characteristics of cleaner A cleanliness study, addressing only various analytical techniques.
4 04/02/1998 Measure sulfate or sulfide in bath A cleanliness study, addressing only various analytical techniques.
5 04/06/1998 Cleanliness measurement of parts cleaned by client A cleanliness study, addressing only various analytical techniques.
6 04/06/1998 Determine relationship between efficiency and OSEE A follow up test, usually based on company input.
7 04/06/1998 To verify concentration of oil in cleaner A cleanliness study, addressing only various analytical techniques.
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