Various types of damage are inevitable during the use of rubber conveyor belts, such as various strips of weaponry, such as welding rods, mixed in during the transportation process.
Steel drills, etc., may be embedded in the conveyor belt at any time to cause longitudinal tear (especially in the tubular conveyor belt and the steel cord conveyor belt)
Or the use of mechanical belt fall off, roller damage, exposed steel cord core and broken edges, etc., resulting in the conveyor belt deviation, are
Can cause longitudinal tearing of the conveyor belt. The use of rubber repair agents to repair the above defects is relatively easy, faster and more economic than vulcanization. oak
The adhesive repair agent is a prepolymer compound, which is a two-component liquid at room temperature, and is self-vulcanized into polyurethane rubber after being mixed in proportions, and is solid at room temperature.
Forming, good adhesion with the conveyor belt, metal body, body with high elasticity, high wear resistance and high toughness. Rubber repair agent repair
It is very effective to tear rubber-core steel tapes, but it cannot be used as a binder. Local damage to the surface of the conveyor belt is not greater than the diameter
At 1/5 of the bandwidth, the conveyor belt still has sufficient overall strength and can be repaired with the repair solution without leakage.
The repair process is divided into three steps:
(1) Surface treatment The purpose of the surface treatment is to better bond the repair agent to the conveyor belt skeleton. Rough roughening into 60°～90°
Beveled and clean surface, this is the key to successful repair. According to the damage situation, the operation will be cut into different cutting edges.
It is best to grind with a grinding wheel and clean it with a cleaning fluid (such as acetone).
(2) Blending and repairing The liquid filler is used to mix resin and curing agent in proportion. Stir evenly and spread on the slope.
In the mouth. The general curing time is from a few minutes to ten minutes. The repair work must be completed before curing. The groove should be larger and be repaired.
Supplements can glue undamaged coverings.
(3) Health curing curing agent self-vulcanization occurs in the groove, obtain its physical and chemical properties and the bonding effect with the substrate, generally at room temperature
The time is from a few hours to a few days. The first few hours are basically vulcanized and can reach 70% to 80% of full cure, 24 hours a day.
Up to 90% can be achieved. When the ambient temperature rises, the curing time is significantly shortened, and it is required to add insulation or heat curing for outdoor construction in winter.
Measures. The connection and repair of the conveyor belts can be machined using a stripping machine, an opening machine, a chamfering machine, a grinding machine, a baking machine, etc.
Dynamic tools are produced in China. With the application of nanotechnology, a ceramic MM-Synthetic rubber 95 was found that can be repaired immediately
Damaged conveyor belts; MM-SS steel ceramics can repair cracks in racks, rollers, etc.