Coating thickness measurement

[ckiyak]

Hello guys i am working at one of the fastener company in Turkey.

I am the responsible of coating department(Dry-film painting department). The problem is that we dont have any non-destructive coating thickness device. So we use cross-sectioning the parts in the laboratory. But, this takes really long time in laboratory. So I want to change the measuring method and i am thinking about dimensional check of the parts. My question is how to mark the parts to find the same parts before and after the coating. You know we coated about 300 parts in the same time. Marking method should be easy for the operator. My opinion is using a colorful masking tape on parts thus operator can find marked parts easily after the coating.

I will be waiting for your ideas. Your ideas may be better than mine.

 

[dik]

One of the firms I worked with had a NDT film thickness device... fuzzy now, but, I think it worked magnetically... but, there should be numerous devices on the market, and, some of the should be relatively inexpensive.

Dik

 

[IRstuff]

such as

http://www.elcometer.com/en/coating-thickness-gauge.html

TTFN (ta ta for now)
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[Ron]

You will save a lot of money and time if your company will invest in a couple of pieces of nondestructive coating thickness devices. As dik noted, there are magnetic ones for use on magnetic ferrous materials. There are ultrasonic devices for use on any substrate. There are optical ones (Tooke Gage) that will work on any substrate but it requires making a scratch in the coating.

I have and use each of these types. You can make multiple measurements in a short period of time to increase the accuracy of your assessment.