The heat transfer roller, also known as the cooling roller, is used to reduce the deformation of the material caused by high temperature or shrinkage during cooling during the winding of the thin film coil. Before winding, the material is cooled by the cooling roller to reduce deformation and shrinkage and improve the product qualification rate. In practical applications, cooling rollers are generally installed behind the drum drying device to reduce the temperature of ultra-thin coils to the ideal winding temperature and avoid the occurrence of product defects.
1、 Internal structure of heat transfer roller/cooling roller
At present, the internal structure of the heat transfer roller is divided into double-layer single flow setting and double-layer double flow setting, and its internal heat dissipation medium is water or heat transfer oil. These two types have different internal structures and manufacturing processes. It has a significant impact on costs.
1. Internal structure of double-layer single flow heat transfer roller: This model of heat transfer cooling roller consists of an outer shell, an inner shell, and a spiral baffle on the inner shell. Water or heat transfer oil is transported from one side and circulated through an internal single flow heat transfer pipeline, and flows out from the other side to remove heat. Achieve the purpose of cooling down.
2. Internal structure of double-layer dual flow heat transfer roller: This model of heat transfer cooling roller consists of an outer shell, an inner shell, and a spiral baffle on the inner shell. The difference from the above is that the heat transfer roller adopts a double-layer dual flow heat dissipation cycle. Water or heat transfer oil is transported from one side and circulated through the internal dual flow heat transfer pipeline. It has high heat dissipation efficiency, complex production process, and slightly higher cost.
2、 Characteristics of Thermal Roller Process
1. Advanced heat treatment technology is used for quenching and tempering, and the inner and outer pipe walls are precision machined to achieve uniform wall thickness and small cooling temperature difference. Advanced hot welding technology is adopted to relieve stress, quench, precision grind, hard chrome plating, and then ultra precision grind and American 3M abrasive precision grind and polish. Make its outer wall precise, have good contact with materials that require heat dissipation, and achieve high heat dissipation efficiency.
2. The cooling roller adopts a unique structural design and advanced heat exchange technology, which can quickly transfer the heat absorbed in the working area to both ends, thereby accelerating production speed, ensuring uniform temperature on the roller surface, and improving product quality and qualification rate.
3、 The function of the heat-conducting cooling roller
The excellent heat dissipation performance of thermal rollers is widely used in the food and pharmaceutical packaging industry, optical film, and solar cell industry; On lithium film and coating equipment. Compared with traditional cooling rollers, this cooling roller structure has a complex internal structure and high technical content, which inevitably leads to an increase in cost. However, the improved production efficiency and stable product quality brought by the new cooling roller cannot be measured by the price difference between the two types of rollers.
1. During cooling, the temperature difference between the hot material and the roller surface increases, which accelerates the heat transfer rate and can greatly improve production efficiency (usually 50-200%) and reduce production costs;
2. The temperature of the entire cooling roller surface is basically stable, ensuring that there is no condensation at both ends of the roller surface, thus eliminating the impact of condensation on product quality;
3. Due to the advantage of the cooling roller structure not condensing, even if the temperature of the cooling water and heat transfer oil is very low, there is no need for operators to monitor the temperature of the cooling water and the condensation on the roller surface, reducing the workload and labor intensity of on-site operators. Guangzhou Furuida Industrial Technology can customize according to your needs.
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