IMPROVEMENT OF THE ROLLING EMULSION CLEANING SYSTEM IN THE PROCESS OF COLD ROLLING WITH TECHNOLOGICAL LUBRICANTS
DOI:
https://doi.org/10.32782/3041-2080/2024-2-3Keywords:
cold rolling, emulsion, purification device, U-shaped plates, hydraulic oils, pass-through magnetic filter, product qualityAbstract
This study explores a new design for a wastewater emulsion purification device used in cold rolling mills, featuring U-shaped plates to enhance the cleaning process’s efficiency. It has been shown that for the reuse of emulsions in cold rolling, it is necessary to ensure effective cooling and lubrication of the rolling tool and strip surfaces, reducing roll wear and improving the quality of the processed metal surface. Regular emulsion purification is essential for maintaining its efficiency and longevity, as it becomes contaminated with metal particles, wear products, and impurities during operation. The new design of the emulsion purification device with U-shaped plates has been found to effectively remove hydraulic oils and contaminants from the emulsion surface, significantly improving cold rolling quality and reducing costs for skimmer procurement. A pass-through magnetic filter has been proposed to further enhance cleaning efficiency by reducing oil content in the sludge and lowering emulsion consumption during rolling. Comparative analysis showed a significant increase in the removal of mechanical impurities using the magnetic filter, leading to a decrease in oil content in the emulsion. The new purification system requires no additional maintenance and operates automatically, increasing its efficiency and reducing operational costs. It has been established that the proposed improvements optimize the emulsion purification process, ensuring better product quality and reducing production costs. Based on the conducted research, it was found that the new system effectively captures contaminants while maintaining the working concentration of the rolling emulsion, as confirmed by laboratory analyses. A comparison of the emulsion in the cleaning box without and with the installed plates visually demonstrates the system’s effectiveness. The improved purification system reduces the overall hydraulic oil content in the rolling emulsion by 15%, saving costs on skimmer procurement and enhancing cold rolling quality by reducing surface contamination sorting of the strip.
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