Trial #9

Trial #9

To evaluate effect wiping has on OSEE readings for stainless steel parts.

2002

10

5

64

65

Part

12/17/2002

0.00

No relation

Jason Marshall

Stainless Steel

Films

None

None

OSEE

Four stainless steel slugs were analyzed as received using a PET OSEE SQM 100 instrument. Four readings were recorded for each side to establish a baseline. Parts were subjected to two separate wipings. Three slugs were wiped with acetone first, followed by OSEE readings. Then the part was wiped with isopropyl alcohol and a third set of OSEE readings were taken. One part was first wiped with a dry paper towel, followed by OSEE readings. Then the part was wiped using isopropyl alcohol and a third set of OSEE readings was recorded. Two different paper towels were used: Kimberly-Clark Kaydry EX-L and Texwipe TechniCloth TX 609.

From the OSEE readings, it appears that the type of wiper used has the most effect on the readings obtained. The Kimberly-Clark wipers caused the OSEE readings to be lower than the Texwipe wipers. Table 1 lists the readings recorded for each slug.
OSEE Analysis

The second table compares the readings between each wipe with the base readings. Values that are negative signify that the second reading was less than the first reading. For example, the W1 reading (acetone with Kimberly-Clark wiper) was 15 points higher than the base reading. The W2 (alcohol with Kimberly-Clark wiper) was 16 points lower than the W1 reading. The third column shows that the W2 reading (alcohol wipe) was 1 point lower than the base reading.

Table 2. Wipe Effect Comparison

          W1-B     W2-W1   W2-B

Wiping with Acetone and Alcohol using the Texwipe wipers resulted in higher OSEE readings than wiping with the Kimberly-Clark wipers.  The acetone soaked wiper was more effective than wiping with a dry Texwipe.

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