5/31/2023 0 Comments Ambardia entire ply thoroughMechanical splice installation is quick and simple. There is enough downtime available to allow for a properly installed vulcanized splice.There is easy access to the area that needs splicing and plenty of room to work.The work environment is at an optimal temperature and moisture level.The procedure is performed by a trusted, certified vulcanizer.The belt is new or without excessive wear.The belt is compatible with the adhesive of choice.The belt is clean and free of contaminating agents, such as oil, sand and material fines.To summarize, vulcanized splicing can be used where: And because vulcanization often requires time for a specialized vulcanizing crew and equipment to be brought on site, operations can be shut down for half a day or more. Vulcanized splicing of a 600mm wide belt could take between six and 11 hours, depending on working conditions. If the belt is old, dirty or unevenly worn, vulcanization is not a good option because it will not always cure evenly, which can result in a weaker splice. ![]() Thirdly, some types of belt may not allow for vulcanization. Secondly, the process requires a specific temperature, compression and equipment dwell time, in addition to a virtually moisture-free work area. First, an expert who is skilled and trained in the procedure and who has a thorough knowledge of solvents, bonding materials and other cover and fill materials must perform a vulcanized splice. When vulcanizing, several factors must be considered to ensure a high-quality splice. If a belt is re-tensioned and used before the splice is bonded and completely cooled, the splice will be ineffective and may come apart completely, causing additional downtime.Ĭold vulcanization does not employ a vulcanizing press, but instead uses a bonding agent that causes a chemical reaction to splice the two belt ends together. With hot vulcanization, splices are heated and cured under pressure with a vulcanizing press. Proper belt preparation is crucial to ensure the finished splice will hold to its published tensile ratings. Each process requires unique tools and an intimate knowledge of the rubber bonding process.įor both hot and cold vulcanization, the belt must be disassembled and each belt end prepared according to that particular belt’s splicing recommendation. There are several types of vulcanized splice, including stepped splices, finger splices and overlap splices, and two types of vulcanizing processes, hot and cold. Vulcanization is a complex procedure that, if done correctly by an expert, can offer a smooth splice with minimal risk of snagging, tearing and other harmful wear to the belt. ![]() What are the environmental factors that might affect the splice? Are workers up against time constraints? What are the costs associated with long conveyor downtimes? These are just some of the questions to ask when choosing between mechanical fastening and vulcanization. ![]() Understanding the pros and cons of each method is extremely important when making an educated decision on which splicing method to use. A critical area of importance on any conveyor system is the splice, and in most applications there are two preferred types of splicing method: mechanical splicing, which joins belt ends by metal hinges or plates and vulcanized splicing, which joins belt ends through heat and/or chemicals. Which is better? Mark Colbourn compares the two main methods of conveyor belt splicing and highlights the benefits of mechanical fasteners in the search for increased productivity.Ĭonveyor systems are at the heart of most quarries and mines, and with extractive operations doing everything they can to improve operating efficiencies and reduce costs, they an excellent first checkpoint when seeking to optimize productivity. First published in the April 2018 issue of Quarry Management as Mechanical Splicing vs Vulcanizing
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