Conveyor belts usually suffer damage in their coverings, fabric and carcasses. Covers are prone to tears, rips cut, gouges, and scoring. Carcasses wear out and are punctured. Belts break and fray around the edges.
Repairs to conveyor belts could take operations off for a long duration. Utilizing hot vulcanising or cold methods of vulcanising to repair the conveyor belt will drastically reduce the length of time that your system is down. In addition, repairs made with either method will prolong the life of the conveyor belt system.
- There are three types of conveyor belts:
- Conveyor belts made of nylon fabric
- ST steel cord conveyor belts
- Whole core of PVC that is flame-retardant conveyor belts or solid PVC belts
Splices that are vulcanised typically fail in the interior because of weak adhesion. Signs of wear could be too late to take any preventive measures. However, a belt joint will almost always last longer than the mechanical splice. This process requires special tools and a deep understanding of the process for bonding rubber.
Cold vulcanizing method
The cold vulcanising process uses the vulcanisation of materials such as strips and patches to fix the conveyor belt. Cold vulcanisation does not employ presses, but instead makes use of a bonding agent such as Chemvulc’s CV2002 or CV4000 which triggers an chemical reaction that splices the two ends of the belt. The vulcanised material is then placed on the area that has been damaged and secured by an adhesive. This is what makes cold vulcanising ideal for the repair of belt covers that have been damaged due to gouges, scoring and various other types of wear. Find Chemvulc’s selection of repairs strips as well as cold patch repair for conveyor belts.
Hot vulcanizing method
The hot vulcanizing technique makes use of the power of heat and pressure to repair parts of conveyor belts. Hot vulcanisation splices get treated and then dried under pressure by a vulcanising machine. The damaged section of belt is then carefully cut or removed. A new section is repaired and secured with glue or another adhesive. The hot vulcanising process is ideal for holes, cuts , and cracks in the belt cover or steel cords, as well as fabric.
Practical power
Vulcanised splices offer the greatest practical strength since they keep any leakage out and the material will be sifted-through since they are continuous. It isn’t possible to vulcanise at any time and anywhere, you must have clean, dry, and warm conditions. While on-site this isn’t always feasible The area may need to be shielded by a blanket of rain or sun as the splice is being constructed.
Cold and hot splicing of belts requires careful preparation to avoid contamination of the splicing region. Cold splicing needs relatively warm temperatures and low moisture levels to make sure that cold vulcanising cements function effectively.
Splices that are vulcanised tend to deteriorate on the outside because of lack of adhesion. Signs of wear could be too late to take any preventive measures. But a vulcanised belt joint is likely to outlast the mechanical splice. Read more.