The basic method of conveyor belt repair

August 6, 2022

The repair of conveyor belt can be divided into two types: planned shutdown repair and emergency repair. Planned downtime repairs can be arranged according to the number, scope, and arrangement of damage; emergency repairs are mostly carried out on-board, so that the conveyor that has been out of action can be quickly re-run, which mainly refers to joint breakage and longitudinal tearing. Applicable repair techniques include mechanical clip connection, cold glue repair and hot vulcanization repair, and repair methods suitable for different situations should be selected for different damages.

1. Repair of special mechanical buckle

The repair of lateral tearing of light and medium fabric core tapes can be done using mouth clip connections (usually only when production must continue and cannot be stopped).

2.Cold glue repair and vulcanization repair

①Clean the surface of the belt, wipe it clean, mark the repaired part with chalk, mark and cut it into round, diamond or rectangular, square slant.

②Peel off the cover glue and the damaged core layer until the undamaged core layer, and make a stepped cut.

③ Then grind to form a relatively smooth and rough surface, apply glue, and patch repair materials in layers. The requirements are basically the same as the joint operation requirements of the belt.

Cold glue repair requires about the same preparation time as hot vulcanization, but can save the curing time necessary for vulcanization. Cold glue repair is advisable if there are many small pieces of tape that are damaged and difficult to handle, but cold glue repair is in the case of large-scale repairs, and when the air temperature is below 17 degrees Celsius, or the ambient humidity is too high, the tape tape In the case of water, the repair quality is relatively poor.

Cold adhesive repair materials are mainly neoprene type and polyurethane type. The neoprene type should be mixed with a cross-linking agent before use. The polyurethane type repair adhesive is generally two-component, and the mixing ratio should be paid attention to when using it.

Unvulcanized cover compound, core compound, tape and glue for hot vulcanization repair can be purchased from the remaining parts of the vulcanized joint or from the relevant factory. The remaining material should be checked for deterioration before use.

In the case of emergency and not enough time to buy, hot vulcanization repair glue can be cut into pieces and placed in a container, added with solvent gasoline and soaked for a certain period of time, and then stirred evenly. The ratio of glue to solvent gasoline is about 1:4-1:5.