Astm d3359 describes two test methods for evaluating tape adhesion of a coating system.
Cross cut paint adhesion test.
The paint has flaked partially or completely along the edges and or some squares have partially or completely detached.
Cross cut testing for paint adhesion on small parts may prove difficult.
The x cut tape test is primarily intended for use at job sites.
This method is utilized in evaluating the adhesion of either one or multiple coats.
Using a sharp razor blade scalpel knife or other cutting device two cuts are made into the coating with a 30 45 degree angle between legs and down to the substrate which intersects to form an x.
Paint adhesion test kit.
Summary of test methods 3 1 test method a an x cut is made through the film to the substrate pressure sensitive tape is applied over the cut and then removed and adhesion is assessed qualitatively on the 0 to 5 scale.
This video demonstrates techniques for handling small or unusual parts for crosshatc.
Iso 4624 paints and varnishes pull off test for adhesion 2 iso 16276 2 corrosion protection of steel structures by protective paint systems assessment of and acceptance criteria for the adhesion cohesion fracture strength of a coating part 2.
Cross cut testing and x cut testing 3.
The tqc cross cut adhesion test basic cutter is used to test the adhesion of dry coats of paint on their substrate by means of a series of cuts through the coating.
There are several different tests to measure the resistance of paints and coatings from substrates.
Before painting apply a consolidating fixative primer to the grid and once dried repeat the test to evaluate adhesion.
Iso 2409 paint and varnishes cross cut test4 3.
Two series of parallel cuts cross angled to each other to obtain a pattern of 25 or 100 similar squares.
The procedure consists of cutting a pattern of perpendicular lines through the adhesive all the way to the substrate then spreading pressure sensitive tape over the cuts and rapidly pulling it off.
In the paint and coating industries paint adhesion testing is often used to determine if the paint or coating will adhere properly to the substrates to which they are applied.
The method selected is based on the total thickness of the coating system to be evaluated.
There are two variants of this test.
The x cut tape test and the cross hatch tape test.
A cross cut area of between 15 to 35 is affected.
3 2 test method b a lattice pattern with either six or.
Cross cut test scrape adhesion pull off test and others.
