|
OBSERVATION |
CAUSE |
RECOMMENDATION |
Extensive separation along splice interface.
|
Improper pressure and/or temperature during vulcanization.
Improper or aged cements and tie gum |
Check platens of vulcanizer for temperature and uneven surface. Use pad between belt and vulcanizer.
User proper cements and tie gums |
| Breaks in the top and bottom ply over a butt joint in the ply immediately beneath. |
Excessive flexing.
|
Use care in fitting steps and avoid buffling along step lines.
|
Step lines show as an impression in belt covers
|
Improper fitting of steps.
Excessive tension. |
Use care in matching step lines.
Reduce tension. |
Separation at edges along steps.
|
Improper pressure. Edges not confined during cure.
|
Use edge irons during splicing to confine edges. Seal edges with cement as a temporay repair. |
