How to master the vulcanization process of rubber conveyor belts

How to master the vulcanization process of rubber conveyor belts

Understanding the vulcanization process of rubber belts mainly requires mastering the essence of vulcanization and the factors that affect vulcanization, determining and implementing vulcanization conditions, operating methods and structures of flat vulcanization machines. Vulcanization is the process of cross-linking linear macromolecules of mixed rubber at a certain temperature, time, and pressure, forming a three-dimensional network structure. Vulcanization reduces the plasticity of rubber, increases its elasticity, and greatly increases its ability to resist external deformation, And it has improved other physical and chemical properties, making rubber an engineering material with practical value. Vulcanization is the last process of rubber product processing, and the quality of vulcanization has a significant impact on the performance of vulcanized rubber. Therefore, strict control of vulcanization conditions should be exercised. The pressure surfaces of the two hot plates of the vulcanization machine should be parallel to each other, and the hot plate should be heated by steam or electricity. During the entire vulcanization process of the flat plate, The pressure applied on the mold cavity area shall not be less than 3 MPa. No matter what type of hot plate is used, the temperature distribution on the entire mold area shall be uniform. The maximum temperature difference between each point in the same hot plate and between each point and the center point shall not exceed one degree. The temperature difference between the corresponding points of adjacent two plates shall not exceed one degree. The maximum temperature difference at the center of the hot plate shall not exceed 0.5 degrees. The common technical specification is the maximum closing pressure of 200 tons, The maximum stroke of the plunger is 200 millimeters, the area of the flat plate is 500 times 500 millimeters, the number of working layers is one, and the total heating power is 27 kilowatts.