Rubber conveyor belts are inevitably damaged during use, such as various strips, such as welding rods, mixed in during transportation.
Steel brazing, etc., may be embedded in the conveyor belt at any time to cause longitudinal tearing (especially on the tubular conveyor belt and the steel cord conveyor belt)
Or use the mechanical belt to fall off, the roller is damaged, the steel cord core is exposed, and the cutting edge is damaged, etc., causing the conveyor belt to run off.
Can cause longitudinal tearing of the conveyor belt. It is relatively easy to repair the above defects with a rubber repair agent, which is faster and more economical than vulcanization repair. oak
The glue repairing agent is a prepolymerized compound, which is a two-component liquid at normal temperature, and is self-vulcanized into a urethane rubber after mixing in proportion, and is solid at room temperature.
Forming, bonding with conveyor belt and metal body, the body has high elasticity, high wear resistance and high toughness. Rubber repair agent repair
It is very effective for tearing rubber steel core tape, but it cannot be used as a binder. Partial 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 to be repaired 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. Grind the crack to 60 ° ~ 90 °
The groove is clean and the surface is clean, which is the key to successful repair. According to the damage, the operation is to cut into different cutting grooves.
It is best to polish with a grinding wheel and clean it with a cleaning solution (such as acetone).
(2) Adjusting the glue. Select the liquid-like repair agent, mix the resin and the curing agent in proportion, stir evenly, and smear on the slope.
In the mouth. Generally, the curing time is from a few minutes to ten minutes. The repair work must be completed before curing. The groove should be larger to repair.
The tonic can glue the unbroken cover.
(3) Health curing The repairing agent self-vulcanizes in the groove, obtaining its physical and chemical properties and bonding effect with the substrate, generally at room temperature.
The next few hours to a few days, the first few hours of basic vulcanization, can reach 70% ~ 80% of full curing, one day is 24h
Can reach 90%. When the ambient temperature rises, the curing time is significantly shortened, and it needs to be insulated or warmed during outdoor construction in winter.
Measures. Conveyor belt connection and repair can be mechanized by stripping machine, opening machine, chamfering machine, grinding machine, baking machine, etc.
Dynamic tools, domestic production. With the application of nanotechnology, ceramic MM-synthetic rubber 95 was discovered and can be repaired immediately.
Damaged conveyor belt; MM-SS steel ceramic can repair cracks in racks, rollers, etc.