The operational reliability and functionality of the conveyor belt are determined by the quality of the splices. Over time, all splices wear out and more than 60% of conveyor belt failures are due to improper splicing. What is conveyor belt splicing and what is the popular conveyor belt splicing method today?
What is conveyor belt splicing?
Conveyor belt splicing is the process of connecting the two trimmed ends of the conveyor belt to form a closed loop to restore the overall belt performance and longevity. This process is usually performed during a new installation or maintenance.
Learn about two popular conveyor belt splicing methods
There are many types of conveyor belts and a wide range of applications. Therefore, when we are splicing conveyor belts, we must consider the type of belt, the speed of the conveyor system, the materials moving on the belt and the environment in which the conveyor belt is used.
Two popular types of conveyor belt splicing are mechanical splicing and vulcanization splicing.
Mechanical splicing is to connect the ends of the belt through metal hinges or plates. It is the most versatile conveyor belt splicing solution. Depending on the width and thickness of the belt, Most mechanical splicing can be installed using portable tools in less than 2 hours.
Mechanical splicing can be done in many different environments and on many types of belts without considering space, temperature, humidity or contaminants. These applications include mining, quarrying and other heavy industrial applications.
Type of mechanical splicing
There are two types of fasteners for mechanical splicing: hinge fasteners and solid plate fasteners. They have a variety of connection methods, including rivets, bolts and staples.
Common mechanical splicing fastening systems: metal hinge fastening system hinged fastening system, staple fastening system staple fastening system, wire hook fastening system wire hook fastening system and solid plate fastening system solid plate fastening system.
Vulcanization connect the ends of the belt by heating and/or chemical action. This process usually takes several hours. Compared with mechanical splicing, vulcanized splicing is smoother and more durable.
Splicing requires the use of special belt vulcanizing tools, professional knowledge and an environment with controlled temperature and humidity.
Type of vulcanization
There are two types of vulcanization : hot vulcanization and cold vulcanization. Multiple splicing forms can be used: step splicing, finger splicing and overlapping splicing. Both types require unique tools and an in-depth understanding of the rubber bonding process.
- Hot vulcanizing– the splices are created using heat and pressure in heated presses. This method is very effective but time-consuming and is suitable for various types of belts of different thickness and width. Compared with other belt splicing technologies, this belt splicing process can produce strong and durable splices.
- Cold vulcanizing -splicing the ends of the conveyor belt by using a SC2000 chemical adhesive. This process requires reliable hand tools and high-quality adhesives.
Both types of vulcanizing require more time and preparation work than mechanical splicing. Vulcanization splicing of a 600 mm wide belt may take 6 to 11 hours, depending on the working conditions. A wider belt may take longer.
Vulcanization must remove the belt and remove it from the conveyor system, so for light-duty applications that do not require continuous maintenance and expansion of the belt, vulcanization is a long-term splicing solution.
If the conveyor belt is old, dirty or unevenly worn, vulcanization is not a good choice.
Through the introduction of the article, we already know that the conveyor belt splicing is divided into mechanical splicing and vulcanization splicing. In the next article, we will introduce how to choose the correct conveyor belt splicing types.