VieQA & QC FOR MAX’S POWDER COATINGS
Our fully equipped laboratory conformable to ASTMs standards allows us to practice all neccessary tests accurately through daily productioning as well as proceeding customized inquiries as its fastest speed. The below procedures and methods are basically designed following the instructions of ASTMs for Performance reliability and Quality control.
1/ COLOR MATCHING BOOTH (ASTM D1729)
Ensure accuracy in visual color evaluation
2/ SPECTROPHOTOMETER (CIE L a b)
Our LAB is equipped with X-Rite sphere spectrophotometer designed to give fast, precise and accurate color measurement.
3/ GLOSS TEST (ASTM D523)
Test coated flat panel with Gardner 60 degree meter. Coating shall not vary 5% from data sheet requirements on each material supplied. Click for surface gloss test
4/ BENDING TEST (ASTM D522)
Coating on 0.36 inch thick phosphated steel panel shall withstand 180 degree bend over 1/4″ mandrel. No crazing or loss of adhesion and finish at the bend be able to removed with 3M Y-9239 tape. Click for Bend Test Conical Mandrel instruction
5/ HARDNESS TEST (ASTM D3363)
Faber Castell wood pencils are used in hardness of 1, 2, 3, 4. Coating shall show no marks from 2H pencil. Click for Wolff-Wilborn test method
6/ CROSS HATCH ADHESION TEST (ASTM D3359)
Scribe parallel lines through coating to substrate, 1/4″ apart a distance of one inch. Scribe anoth set of parallel lines 1/4″ apart and perpendicular to the first set. Apply any sticky tape then remove quickly. Results should be no lifting of the cured powder between scribe lines. Click for Cross cut test procedure
7/ CHEMICAL RESISTANCE TEST (ASTM D1308)
Place approximately 10 drops of test solvent, consisting of 95% by weight toluene and 5% by weight Methal Ethly Ketone on the surface of the coating. Allow to stand for 30 seconds. Wipe off with soft, dry cloth. Coating shall show no more than a slight circular mark.
8/ IMPACT TEST (ASTM D2794)
Coating on 0.36 inch thick phosphated steel panel shall withstand impact with 1/2″ Gardner impact tester ball at 26 inch pounds direct and reverse. No grazing of loss of adhesion. Finish shall not be able to removed at impact area with 3M Y-9239 tape. Click for Impact test procedure
9/ SALT SPRAY CORROSION TEST (ASTM B117)
Use a 5% salt solution at 92-97 degrees F in a sealed weather cabinet. Scribe X in steel Zince phosphated test panel to bare metal. Inspect every 24 hours. End test and toto hours after 1/4″ creepage from scribed area. Creepage shall not exceed 1/4″ in either direction from scribe line after 500 hours exposure. Click for Salt spray test tutorial
10/ QUV EXPOSURE TEST (ASTM G154)
Our QUV exposure Tester is used to simulate outdoor sun exposure on coatings, evaluating the resistance of coatings to the effect of UV radiation and humidity.
