Structure and Composition
- Skeleton Material: Such as cotton canvas, nylon canvas, polyester canvas or steel wire ropes, etc. It provides strength and support, determining the tensile strength and impact resistance of the conveyor belt.
- Cover Layer: Located on the upper and lower surfaces of the conveyor belt, it mainly serves to protect the skeleton material and contact the materials. Its properties determine the wear resistance, heat resistance, oil resistance, acid and alkali resistance and other characteristics of the conveyor belt.
- Base Material: Used to enhance the adhesion between the skeleton material and the cover layer, ensuring the stability of the overall structure of the conveyor belt.
Classification
- Classification by Width: Common models include B400, B500, B600, B650, B800, B1000, B1200, B1400, B1600, B1800, B2000, B2200, etc. (B represents the width, in millimeters).
- Classification by Usage Environment: Including ordinary type, heat-resistant type, flame-retardant type, fire-resistant type, acid and alkali resistant type, oil resistant type, cold resistant type, food conveyor belt, etc.
- Classification by Canvas Layer Tensile Strength: It can be divided into ordinary conveyor belts and high-strength conveyor belts. The high-strength canvas rubber conveyor belts are divided into nylon rubber conveyor belts (NN conveyor belts) and polyester rubber conveyor belts (EP conveyor belts).
Characteristics
- Good Wear Resistance: It can withstand the long-term friction and extrusion of materials, reduce wear and extend the service life.
- Excellent Tensile Resistance: It has good tensile resistance and is not easy to be broken under a large pulling force.
- Strong Aging Resistance: It can withstand various climate and temperature changes, and is not easy to deteriorate or be damaged due to long-term use.
- Convenient and Flexible to Use: It can be spliced and adjusted in length as required, and production automation can be realized by controlling the speed of the conveyor belt.
Manufacturing Process
- Mixing: Mix rubber with various compounding agents evenly. There are two process methods: single-stage mixing and multi-stage mixing.
- Molding: Make the mixed rubber and the skeleton material into a belt blank through processes such as calendering and laminating.
- Vulcanization: Put the belt blank into a vulcanizer. Under certain temperature, pressure and time conditions, the rubber undergoes a cross-linking reaction to form a rubber conveyor belt with certain strength and elasticity.
Application Areas
- Mining Industry: Used for conveying materials such as coal and ores.
- Metallurgical and Steel Industry: Used for conveying sintered ore, coke, iron filings, etc.
- Chemical Industry: Used for conveying various chemical raw materials, finished products or semi-finished products.
- Building Materials Industry: Used for transporting materials such as cement, sand and gravel, and bricks.
- Grain Industry: Used for conveying grain crops such as grains and flours.
Joint Methods
- Mechanical Joint: Use belt buckles for connection, which is convenient and economical, but the joint efficiency is low and it is easy to be damaged.
- Cold Bonding Joint: Use cold-bonding adhesives for connection, which has high strength and relatively simple construction.
- Hot Vulcanization Joint: Through high-temperature vulcanization, the rubber at the joint part is vulcanized into one body with the conveyor belt body. The joint has high strength and long service life.
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