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Fire Resistant/Heat Resistant Conveyor Belt
high temperature 100,125,150,175,200,300 centigrade Heat Resistant Conveyor Belt Characteristics:
It can resist high temperature. The rubber compound used in the cover have been designed to avoid premature aging due to contact with any source of heat. It can be divided into four types according to working temperature range:
HRT-1 <=100°C, HRT-2<=125°C, HRT-3<=150°C,HRT-2<=175°C
Models:
Heat resistant conveyor belts fall into three models
Mode1: able to with stand the test temperature of less than 100°C, code S1
Mode2: able to with stand the test temperature of less than 125°C, code S2
Mode3: able to with stand the test temperature of less than 150°C, code S3
Mode4: able to with stand the test temperature of less than 175°C, code S4
| The physical and mechanical properties of the heat resistant covering layer after tested should be in accordance with the following table: |
| Project | The type | ||||
| T1 | T2 | T3 | T4 | ||
| Change the range | |||||
| Hardness | Draw the intensity | +20 | +20 | +20 | +20 |
| Maximum after wearing out | 85 | ||||
| Draw the intensity | The minimum value Mpa after wearing out | 12 | 10 | 5 | 5 |
| Performance rate of change /% | -25 | -30 | -40 | -40 | |
| Break person who extend | Performance rate of change /% | -50 | -50 | -55 | -55 |
| After aging rate of change /% | 200 | 200 | 180 | 180 | |
The 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 | |||||
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 |
Item | interlayer of cloth | cover layer and cloth interlayer | |
Thickness of the cover layer≤1.5mm | Thickness of the cover layer>1.5mm | ||
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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