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What are the reasons for the cracking of rubber conveyor belt joint

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Update time : 2023-01-31 10:25:06
There are usually three kinds of rubber conveyor belt joint. The rubber conveyor belt is a mechanical joint, a cold rubber joint and a hot vulcanized joint. The strength of conveyor belt joint is lower than the strength of its own belt body. When the conveyor belt uses mechanical joint, the joint strength can only reach 40-50% of the strength of the belt body. When cold adhesive is selected for the conveyor belt, the joint strength can reach 60-70%. When hot vulcanized joints, the joint strength of the conveyor belt can reach 80-90%.
The strength of the conveyor belt joint is relatively low. If the bonding method is not accurate, the strength of the conveyor belt joint will be lower. If the cutter and conveyor belt grinding damage the next layer of canvas, grinding too much, the lap length is not good, the number of steps is not good, the rubber function of the joint is not good or has already self-sulfur failure, steel wire rope grinding too much, steel wire rope rust, etc., the strength of the joint will be greatly reduced, when in use, it is easy to show the scene of conveyor belt joint disconnection and cracking. If the conveyor belt does not choose sealing glue, or the direction of the joint is wrong, the joint (surface glue part) will also show the cracking scene.
Avoid cracking from the source, add cracking inspection equipment, check the results in the shortest time, send an alarm and stop. Belt tear is formed by a variety of factors, can not completely avoid the cracking of the conveyor belt, tear prevention equipment and inspection equipment is mainly torn inspection equipment, usually located in the blanking point, composed of sensors and controllers, sensors installed under the conveyor belt or chute, controller installed in the machine side or indoor.
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