|
.
.
.
.
.
|
|
MERCURY
RUBBERS FIRE RESISTANT RUBBER
CONVEYOR BELTING
MERCURY RUBBERS
Fire Resistant Rubber Conveyor Belting meets the DIN & Canadian Bureau
of Mines specification. The important features of MERCURY RUBBERS Fire
Resistant Conveyor Belting are:
(i) Resistance to fire
(ii) Excellent abrasion resistance
(iii) Resistance to grease & oil
(iv) Improved drivability under wet conditions.
It is available in widths up to 1500 mm with reinforcement of Cotton/Cotton,
Cotton/Nylon, and Synthetic fabrics. Apart from all the tests of IS 1891
(Part 1)-1988 e.g. full thickness breaking strength, Elongation, Adhesion
etc. the MERCURY RUBBERS fire resistant grade (FR) Belting is subjected
to most stringent tests of fire resistance property. These tests are :
(i) Flame Test
(ii) Drum Friction Test
(iii) Electrical Resistance Test
MERCURY RUBBERS laboratory is well equipped with its. technical personnels
& testing facilities for carrying out all the above tests.
Fire
Resistant Grade Conveyor Belt
|
TESTS
|
DIN 'K'
| AS
'F'
| CAN/CSA
-M422-M87 TYPE C
|
|
Minimum
Tensile Strength
|
20
|
14
|
17
|
|
Minimum
Elongation at break (%)
|
400
|
300
|
350
|
|
Maximum
Abrasion Loss ( mm³)
|
200
|
200
|
200
|
| Flame
Test |
As per DIN 22103.
Acceptance Norms:
Maximum duration of flame - 45 secondsfor 6 nos. test pieces
Maximum duration
of flame for individual test piece - 15 seconds.
|
As per AS 1334.10.
The Average duration of the visible flame shall not exceed 30 seconds
and average duration of the visible afterglow shall not exceed 120
seconds.
the duration
of the visible flame of any test piece shall no exceed 45 seconds
and the duration of the visible afterglow of any test piece shall
not exceed 180 seconds.
|
For
each set of four samples, when tested in accordance with clause 4.1
, the average duration of flame shall not exceed 60 seconds. |
| Drum
friction test |
Not
Specified |
As
per AS 1334.11 the surface temp. of the drum shall not exceed 325º
and there shall be novisible flaming or visible glowing. |
For
each test conducted as per clause 4.2 , the belting shall show no
sign of flame ( sparks and glow not being objectionable ) and the
drum temperature shall not exceed 400º C. |
| Electrical
Resistance |
As
per DIN 22104
Acceptance Norms :
Average value on bot h the upper and lower surfaces of the belting
shall not be greater than 300 Mega ohms. |
Not
Specified |
When
tested in accordance with Clause 4.4 , each of averages shall not
exceed 300 Mega ohms. |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
.
|
|
.
|
|
.
|
|
.e
|
|
.e
|
|
.
|
|
.
|
|
.
|
|
.
|
|
.
|
|
.
|
|
.
|
|
.
|
|
.
|
|
.
|
|
.
|
|
.
|
|
.e
|
|
.
|
|
.
|
|
.
|
|
.
|
|
.
|
|
.
|
|
.
|
|
.
|
|
.
|
|
.
|
|
.
|
|
.
|
|
.
|
|
.
|
|
.
|
|
.
|
|
.
|
|
.
|
|
.
|
|
.
|
|
.
|
|
.
|
|
