INDUSTRIAL TRIALS OF ROLLING EMULSOLS AT PJSC “ZAPORIZHSTAL” TO SELECT THE OPTIMAL PRODUCT AND IMPROVE TECHNOLOGICAL METHODS OF WORKING WITH ROLLING EMULSIONS
DOI:
https://doi.org/10.32782/3041-2080/2025-3-17Keywords:
rolling emulsion, industrial trials, product contamination, emulsion working time, emulsion concentration, mechanical impurity levelsAbstract
The article presents the results of experimental-industrial trials of 22 brands of rolling emulsions at the metallurgical plant PJSC “ZAPORIZHSTAL”. The primary goal of the study was to determine optimal parameters for using rolling emulsions in cold rolling, focusing on reducing strip surface contamination, improving surface cleanliness after each technological stage, and minimizing defects during annealing and tempering. The paper describes in detail the developed methodology for conducting industrial tests of emulsions, including the stages of concentrate sampling, equipment cleaning, and analysis of changes in emulsion concentration and the content of mechanical impurities. Special attention is given to the influence of emulsions on roll wear, motor load stability, and the quality of the finished rolled product. The study also led to the formulation and approval of technical requirements for rolling emulsions, which serve as a basis for collaboration with lubricant manufacturers. A significant aspect of the work is the examination of emulsions’ tendency to form coking residues after annealing and the development of recommendations to reduce the number of mechanical impurities in the rolling emulsions. The findings from these trials enabled improvements in the cold rolling process, enhancing product quality and reducing costs by optimizing emulsion management. The article also provides accumulated data on product contamination and offers suggestions for further improvements in technological processes based on the trial results.
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