Phenolic resin for bonded abrasive 3620

Specifications Properties CHARACTERISTIC PARAMETERHot plate cure time(150 C) 80 -110 sec Inclined plate flow (3620-L) 25 -40 mm (3620-S) 17 32 mm Sieve analysis: (thru 200mesh) ≥98 % Hexamine content (3620-L) 9.5- 10.5 % (3620-S) 12- 13 % Water content 0.6- 1.0% Free Phenol ≤1.5% Shelf life 6 month at 20oC max. in dry place. Descriptions 3620-B is a phenol-formaldehyde, powdered resin containing hexa. Hexa has been added during grinding. 3620-B is known for its high sthength and long abrasion life, excellent heat resistance. Applications 3620S is suggested for use as a binder for cold-pressed cutting wheels and 3620L for cold-pressed roughing wheels.