paint quality test procedures

Look at www.gardco.com, they sell the equipment used fot testing, with reference to standards.

There are many physical aspects to test.

Their 69th birthday catalog privided me ennough information to answer your question!

Seriously, it is very complete and informative.

You have to be more specific or selective when you say: I want to do QC test.

Do you have detailled coating specification spelling out test methods and pass/fail critreria?

What is important for you and your customer in term of performance? it will dictate the test you want to do.

ASTM (American Society For Testing And Materials) is a scientific and technical organization formed for the development of standards or characteristics and performance of material, products systems and services. They produce tons of testing procedure and standard; you have to choose first what you want to check and then apply the standard procedure you need.

For example, if I want to check a refrigerator or an oven coating I would like to check the gloss and color variation from batch to batch against my standard. Then I would check the film hardness, the adhesion, if the paint can resist to domestic cleaning solution, the ease to clean, resist to ketchup, Coke, mustard etc... You got the idea...

On the other hand I want to check a tank lining for a hot water tank my frist criteria would be: NSF-61 approval, service temperature resistance, holiday testing, etc...

Then you have to, how to read, interpret, and use them (ASTM Standard) for meaningful results (different tests and results from each suppliers sometimes).

Your technical sales representative should give you a hand in putting together a QC manual (the usual industry testing method) and standard method book or if you can go to a third party... Depending on what you have done yet I can give you guidelines or go to the entiere process with you...

Hope this help... Oherwise let me know I will try to be more specific...

I want to know the procedure for testing powder coating quality like

gloss test,adhesion test , impact test , hardness test, pencil test etc.

kindly help

Best regds.

Australian Standard 1580 "Paints and Related materials - Method of Test" sets out most if not all the tests that you could possibly do on powder coatings.

Things I'd be looking at are:

Type and density of defects

Thickness (average and range)

Gloss

Distinctness of Image

Solvent Resistance

Stain Resistance

Pencil Hardness

T-bend cracking

T-Bend Adhesion

Reverse Impact adhesion

Scratch resistance

Abrasion resistance

Colour match (in terms of batch to batch, in terms of thickness, and in terms of cure)

Humidity resistance

Acid resistance

Yes, Sure...

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