How to detect the adhesion of paint:
Paint is an indispensable material for people's home decoration. Although the wall decoration is various now, most people still choose paint because the paint is not only economical, but also meets the individual needs of color and decoration. Here we introduce to you how to judge the adhesion of the paint, friends who are not clear come and see!
How to judge the adhesion of paint?
A. First use the art blade or cross-cutting device to draw the shape of the cross lattice on the paint coating. The cut of the cross-cutting device should be to the bottom layer of the paint, and the horizontal and vertical strokes are divided into one knife to form one hundred small squares, and the lattice is 1mm× 1mm.
B. Brush each brush five or six times toward the corner of the small grid, brush the small pieces clean, and then tape it on the slit and pull it open. The adhesion of the tape should be 350-400g/m2.
C. Finally, observe the situation of the grid area with a magnifying glass.
D. The test results are shown in the following test standards for paint adhesion.
Paint adhesion test standard
The criteria we use to determine paint adhesion are primarily the amount of topcoat or plating that is adhered by the tape and the percentage of the hundred grams. There are five levels:
A, ISO rating: 5 = ASTM rating: 0B
This means that the paint has a peeling area of ​​more than 65%.
B, ISO rating: 4 = ASTM rating: 1B
Some of the squares are partially or completely peeled off, and the peeling area is greater than 35%-65%.
C, ISO rating: 3 = ASTM rating: 2B
It means that there is partial peeling or large-area paint peeling along the edge of the slit, and even some of the lattice part is peeled off by the whole piece, and the area exceeds 15%-35%.
Abrasive belts belong to coated abrasives. It is also called flexible abrasives. When polishing, it is more flexible and safe than the solid grinding wheel, and it has the advantage of higher precision and lower cost.
Aluminum oxide can be in continuous grinding to form new edges and is better than other abrasive grinding. Aluminum oxide cloth can be used for narrow belt, Flap Disc, and flap disc, for polishing pine wood, log board,furniture, handcraft products and vine products.
After 30 years` development, Abrasive Cloth grinding has become a complete and self-contained system of new processing technology. Because of its high processing efficiency, wide application range, strong adaptability, low cost, safe and convenient operation, it is well received by customers. In foreign countries, Abrasive Belt grinding technology has made great progress. It can be applianced for more and more processing object . It can process almost all engineering materials, from the general daily life appliance to application of large aerospace equipment.
If you have any questions, please contact with us directly. The abrasive cloth are produced with high quality and good appearance. Welcome you can visit our factory for inquiry. Please send mail directly to us.
Advantages of Aluminum Oxide Abrasive Belt:
High quality and low price,
Available in vary grit.
Aluminum Oxide Abrasive Belt
Aluminum Oxide Abrasive Belt,Water Resistence Grinding Belt,Matel Grinding Belt,Aluminium Oxide Sand Belt
Jiangsu Fengmang Compound Material Science & Tech Group CO.,LTD , http://www.fmabrasive.com