It has high tensile strength and wears resistance. In the actual operation, the conveyor steel cord belt breaking protection and monitoring device is mainly installed on the conveyor. Why is a vulcanized splice better than other methods of joining belt ends? The total width of the belt fastener has to be approximately 15 mm less compared to the width of the full elevator belt. At that time, the existing monitoring and protection device could stop the conveyor only when the sharp edge penetrated a certain depth. It must be connected in a endless for practical use, so the belt joint is a very important part of the preparation. B) Self-cure Splicing Materials: - Self-curing materials are not always suitable for splicing since tensions involved often exceed adhesion capability; - A post-cure period of up to 24 hours can be required; - a certain amount of technical skill is necessary. The elevator belt is the heart of the elevator. We have more than 15+ industry experience, and still going above and above in the Belt Industry. The ALMEX unique Pressure Bag Principle which is simple to operate, gives up to 200 p. s. i. This kind of joint method is more efficient than mechanical joint, and also more economical.
Steel Cord Belt Joint Procedure Pdf
In a matter of minutes and ensures Uniform Pressure over the entire platen area. What is Hot splicing? 1 mm thinner than the belt, are placed against both belt edges and clamped outside the splice area. This bias angle is generally 22 degrees; most vulcanizing presses are manufactured with this bias angle built in. 48–53, BONNERIC M., AUBIN V., DURVILLE D., 2019, Finite element simulation of a steel cable-rubber composite under bending loading: Influence of rubber penetration on the stress distribution in wires, Measurement, Vol. Steel cord belt fasteners produced by other suppliers are often locked (single use only).
Steel Cord Belt Joint Procedure Chart
The reasonable curing temperature is generally 144℃~147℃. Along with knowledge about conveyor belts types, construction, procedure of belt joints. The unique removable rubber wear part that is fitted on the aluminum wedge section of the Polysur® Solid belt fastener prevents the belt from wear and extends durability. In many cases one have to tighten the steel cords together and after a template has to be put around the cords which are tightened together and a hot epoxy is casted in the template to seal the belt fastener. Restricted use of cookies in the browser configuration may affect some functionalities of the website. For high-class splices, an air-conditioned, dust-free assembly hall with a modern vulcanization device, fresh and suitable (unvulcanized) splicing material, and experienced engineers and splicers who carry out the work in accordance with the instructions of the conveyor belt manufacturer, are required. The steel cords have to be positioned as determined by the belt manufacturer or by the standard (f. i. DIN 22131). Moreover, filling the inside of the cords with rubber protects against corrosion and has a good effect on their durability. The bars are 1-2 mm (1/16 inch) thinner than the belt.
Steel Cord Belt Specification
All the additional items that will be fitted on the belt like elevator buckets, bolts and belt fasteners are in sense foreign objects to the belt, which in the long run could result into stress and wear, due to the pressure of these parts while running over the pulleys. Therefore, when the conveyor belt is stripped of the steel cord and ready to be jointed, first to fix the vulcanizer, and place a stable platform no shorter than 3m on both sides of the conveyor belt. It is common practice to grind or buff away any surplus rubber from the splice to improve the performance of the joint as it passes through belt cleaners and other conveyor components. Nylon conveyor belt has the characteristics of thin body, high strength, impact resistance, good trough forming, strong adhesive force between layers, excellent flexibility and long service life. The pressure should not be lower than 115MPa. No guess work as to the amount of pressure required, no bolts to tighten. Where gaseous, static or dusty conditions exist, the danger of sparking is eliminated. Joints for layered conveyor belts. Cold vulcanizing splicing is fast and high efficiency, but it is only used for the emergency joint of a variety of conveyor belts.
Steel Cord Belt Joint Procedure Kit
The longitudinal tearing of conveyor belt will not only cause the loss of equipment, but also seriously affect the production progress. In the event of a sudden overload or a plug-up somewhere on the system, it is not difficult to determine which type of splice is going to fail. It is applied like a second core rubber sheet. The belting manufacturer is the best source of information on proper vulcanization techniques and materials. Vulcanized splices require the cutting away of layers of rubber covers and fabric carcass to let the belt ends be overlapped and joined. The belt ends are carefully laid together in proper alignment with the adhesive, and full contact is achieved with hand rollers, pressure rollers, or hammering in a prescribed pattern. After several minutes allow temperature to rise to 142°C (290°F). The rubber between the steel cords is removed. The components of a steel cord conveyor belt splice: 1) Cover sheets. TVET-II/TVET-III with 8/6 years expriance, inbelt vulcanazation. Everything you want to read. Belt must be dried | Overhead tarp is sufficient | | SPLICE FAILURE | No Warming | Warning Period | Long Warning Period |. Data, including cookies, are used to provide services, improve the user experience and to analyze the traffic in accordance with the Privacy policy. Uncured cover rubber is designed to bond to cured cover rubber in all standard grades of steel cord and fabric conveyor belts.
Steel Cord Belt Joint Procedure Table
Only 40% of actual belt strength is retained at a metal fastener joint. Approximately half a metre behind the splice area a crossline is drawn at right angles to the centre line as a reference line. The Uncured Cover rubber&Uncured Skim Rubber is unvulcanized raw rubber film.
Steel Cord Belt Joint Procedure 2019
It would be best if the belt fastener could be reused again, since it is an expensive component which should be durable. The presented method is reliable and can be used for a broad range of cord diameters and designs. Isolating Individual Cables. To get the most out of this page, you may first watch the animation on the left.
Small fabric belt splices can often be cured in a single setup. Semi-Permanent (dependent on splice conditions) | Permanent | | METAL DETECTORS | No | Yes | Yes | | MATERIAL SIFT-THROUGH | Yes | No | No | | BELT DAMAGE | Holes, punctures, open cut moisture penetration | No | No | | CONVEYOR DAMAGE | Yes: Idlers, Pulleys and belt cleaners | No | No | | AMBIENT CONDITIONS | No problems | Susceptible to moisture and dirt contamination. About Sai Conveyor ASSOCIATES. In practical applications, the integrity of the splice is critical to minimizing the risk of downtime. Working platform will be removed. It can be executed in dusty environments and is suitable for all types of belts with varying widths and thicknesses. Although the equipment is automated, the process may require constant human attention to achieve the best results. Conveyor Belt Hot Splicing Application. Precautions for conveyor belt joint vulcanization: - Things should be paid attention to in the vulcanization joint process of the old conveyor belt. In cold splicing, the joint is not cured in a press. The installation has to run and by reusing a belt fastener which prevents wear on the elevator belt as well, the end user's total cost of ownership will be improved. Reward Your Curiosity.
Buffing dust is to be swept off. Support maintenance of plant equipment as when required. The belt ends are bend 90° with a radius of 75 mm. The wedge ensures the guiding and protection of the elevator belt and procures an extra protection surface as well. REMA TIP TOP also offers Critical spare splice kit inventory management to further reduce downtime and cost during unplanned outages. Oil pumps will be connected to upper traverses. This critical part is suitable for temperatures up to 150° C. In case of temperatures exceeding 150° the rubber segment can be replaced by an aluminum segment. Belt surface, ramps and edges are being inspected visually. For your clear understanding, please find the joining pics as following: Joining the elevator belt with fastener/clip at site. Our Uncured Cover Rubber& Skim rubber are designed for use in step splicing and finger splicing of belts, they are tried and tested successfully domestic. Our fasteners are designed as light as possible and consist of multiple sections across the belt width, so not one single beam across the full width of the belt. General cold bonding joints, hot. 300 mm (12 inches) longer in the longitudinal directions.
An unvulcanized cover rubber sheet is placed at the bottom of the splice on top of a separation cloth. The position and the number of bolt holes can either be calculated by Muller Beltex engineers through a calculation program, knowing exactly how much safety the clamp provides related to the belt strength, or determined by our customers engineers. 000 N/mm our Polysur® Solid belt fastener with a triple steel vice-part is recommended. The vulcanization is initiated by plugging the heating platens in.