|
Test Item
|
Test Condition |
Requirements |
3/8 |
3/8 |
| Impulse Test |
Oil temperture :135°C
Ambient temperture 135°C±6°C
Cycle rate :30-40/min
|
225,000
cycles without failure
|
>230,00 |
>230.0000 |
| Low tempreture flexbility |
The hose shall be bent through 180°on 8 times OD MANDREL AFTER THE TEMPERTURE OF -40°C±3°C for 24hs |
Hose shall not fracture or show anycracks,break in the tube or cover |
OK |
ok |
| Tensile Test |
|
>5337.9N |
7000 |
7000 |
| Adhension |
At the speed of 25 mm/min |
44.48N/inch |
112 |
126 |
| Burst test |
13.8Mpa*2min;
Pressure rate:172.5±69Mpa
|
>41.4Mpa |
65 |
66 |
| Ozone |
In the proportion of 50pphm±5 ozone in the air bt volume for 70-72hs at the temperture of 40°C±3°C |
The cover show no cracking at 7X magnification |
OK |
OK |
| Volumetric Expension |
0~8.97Mpa for 30s |
3~8cc/FT |
5.4 |
6.0 |
| Lenth Change |
1~10.3Mpa |
+2%~-5% |
1% |
1% |
制动软管
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