Page 66 - NORTON cutting-off and grinding wheels - industrial

COATED ABRASIVES & BEARTEX NON WOVENS 66
COATEDABRASIVES& BEARTEX
The Norton coated abrasive and Beartex product offering encompasses a complete range of belts, discs,
rolls, sheets and flap wheels for all your polishing, welding, maintenance and repair operations needs.
This extensive product range includes products designed for all types of application, including heavy
stock removal, dimensioning, grinding, deburring, cleaning, blending, polishing and finishing operations.
UNDERSTANDING THE PRODUCT
COATED ABRASIVES
2 9 9 R
BACKING
A - Light Paper
F - Fibre
G - Heavy Paper
H - Heavy Paper
K - Cloth
Q - Various (e.g. Screenback & Film)
R - Cloth
S - Combination
T - Waterproof Paper
U - Norax
W - Special (Cork)
PRINCIPAL ABRASIVE
1 - Aluminium Oxide
2 - Aluminium Oxide
3 - Aluminium Oxide
4 - Silicon Carbide
6 - Emery
7 - Flint
8 - Zirconia Alumina
9 - SG - Ceramic
Aluminium Oxide
COATED
Odd Number
- Open coat
Even number
- Closed coat
RANDOM
Differentiates
different products
within the same
product group
INTRODUCTION
BACKING TYPES
Whether paper, cloth, vulcanised fibre or polyester
film, the backing must be smooth enough for
uniform adhesive coating, stong enough to
withstand grinding pressures and flexible enough to
conform to contours if necessary.
ABRASIVE BONDS
There are two main types of adhesives in use, one
based on animal glue, and the more common based
on synthetic heat hardenable resins. The adhesive
is applied with a minimum of two bonding
applications.
The first, or maker, coat adheres the abrasive grain
to the backing ensuring proper anchoring and
orientation. After drying, or curing, the second, or
sizer, coat is applied. The sizer adhesive, united with
the maker bond, provides final grain anchoring
and the proper total adhesive level for the finished
product.
ABRASIVE TYPES
The ideal abrasive grain offers maximum resistance
to point wear, yet fractures before serious dulling
occurs, thereby satisfying both stock removal and
finishing requirements.
NATURAL ABRASIVES
Emery is a natural composite of corundum and
iron oxide. The particles are blocky in shape and
tend to cut slowly, thereby producing a polishing
action on the material being abraded. Used for
general maintenance and polishing of metals and
in very fine grits for highly technical polishing,
such as preparing metallurgical specimens
requiring very close tolerances. Emery products
are black in colour.
BONDEDABRASIVES
SUPERABRASIVES
DIAMONDTOOLS
CLEANING,POLISHING& MASKING
PERSONALPROTECTIONEQUIPMENT
TECHNICALINFORMATION