Development of rational conditions for cold rolling of AD33 alloy tapes on an industrial 175 × 300 mill using the results of computer simulation

• Published in: Metallurgist (New York) 2024, Vol.67 (11-12), p.1802-1809
• Main Authors: Shatalov, R. L., Pham, V. H., Tran, V. Q.
• Format: Article
• Language: English
• Subjects: Aluminum base alloys; Characterization and Evaluation of Materials; Chemistry and Materials Science; Cold rolling mills; Computer simulation; Lubricants; Lubricants & lubrication; Materials Science; Metallic Materials; Rolling moments
• ISSN: 0026-0894; 1573-8892
• DOI: 10.1007/s11015-024-01677-7

The article presents the results of computer simulation and experimental rolling of 0.55 mm thick, 100 mm wide tapes made of AD33 aluminium alloy on an industrial 175 × 300 double-roll mill under different contact friction conditions. The study quantifies the impact of technological lubricants on the distribution of rolling forces, moments, and powers along the tape length. It has been shown that the use of technological lubricants reduces the force and power parameters compared to dry rolling. When simulating the rolling process of tapes made of AD33 alloy with I40 technological lubricant (5%), the rolling force decreases by 6.72 kN (7.9%), the rolling moment—by 0.026 kNm (12.6%) and the rolling power—by 0.098 kW (12.8%) compared to dry rolling. When the rolls are lubricated with kerosene, the rolling force decreases by 8.8%, the rolling moment—by 18.8%, and the rolling power—by 18.6%. The results of computer simulation of rolling with various technological lubricants have led to the development and implementation of a new rolling mode on a 175 × 300 double-roll mill using I40 industrial oil as the technological lubricant. The new mode ensures the specified thickness accuracy of 0.55 ± 0.01 mm along the length of AD33 alloy tapes, significantly reduces the deformation time, and decreases the loads on equipment (by 5–8%) at the machine-building plant in Dong Nai city.