Heat resistant conveyor belts




 The heat resistance conveyor belt is made of the multilayer rubber cotton canvas ‘polyester cotton’ covered with the high temperature or heat resistant rubbers, which are bonded through high temperature vulcanization, it is applicable to conveying of the coke, cement, clinker and hot casting etc. 
   1、The heat resistance conveyor belt’s specification shall be identical with that of the conventional conveyor belt.
   2、The heat resistance conveyor belt shall be in accordance with HG2297-92.
   3、The heat resistant conveyor belt contains three types.
   Type I; it is able to resist the test temperature of no more than 100℃, the max. short-time operating temperature is 150℃,the symbol is T1.
Type II; it is able to resist the test temperature of no more than 125℃, the max. short-time operating temperature is 170℃,the symbol is T2.
Type III; it is able to resist the test temperature of no more than 150℃, the max. short-time operating temperature is 200℃,the symbol is T3.
Type IV; it is able to resist the test temperature of no more than 175℃, the max. short-time operating temperature is 250℃,the symbol is T4.
2The heat resistance conveyor belt physical property of the cover rubber after heat test shall conform to the values specified in the table.

Item
type
 
type I
type II
type III
variable range
Hardness
Difference before and after ageing (IRHD)
 
±20
 
 Max. Value after ageing (IRHD)
85
Tensile strength
variable rate in performance   ≤
25
30
40
Min. value after ageing Mpa
12
10
5
Rate of elongation at break
 
variable rate in performance% ≤
50
55
Min. value after ageing
200
180

3The heat resistance conveyor belt abrasive wear of the cover rubber

 Type
 
Item
level
Abrasive wear
 
type I
 
type II
 
type III
 
First quality
0.8
1.0
1.0
 
accepts
1.0
1.2
1.2

4The heat resistance conveyor belt layer to layer adhesion strength

 
Item
interlayer of cloth
cover layer and cloth interlayer
Thickness of the cover layer≤1.5mm
Thickness of the cover layer1.5mm
The average value of the longitudinal specimen shall be no less than
3.0
2.2
2.6
The peak value of the longitudinal specimen
2.0
1.6
2.0


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