Analysis of premature failure of work rolls in a cold strip plant

• Published in: Wear Vol. 263; no. 7; pp. 1442 - 1446
• Main Authors: Li, Hongchun, Jiang, Zhengyi, Tieu, Kiet A., Sun, Weihua
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Lausanne Elsevier B.V 10.09.2007; Amsterdam Elsevier Science; New York, NY
• Subjects: Applied sciences; Cold rolling; Exact sciences and technology; Forming; Fracture mechanics (crack, fatigue, damage...); Friction, wear, lubrication; Fundamental areas of phenomenology (including applications); Machine components; Mechanical engineering. Machine design; Metals. Metallurgy; Physics; Production techniques; Rolling; Solid mechanics; Stress distribution; Structural and continuum mechanics; Wear; Work roll; Cold rolling; Stress distribution; Work roll; Wear; Work hardening; Rupture; Hardness; Rolling mill roll; Failure analysis; Chemical composition; Microstructure; Damaging; Strip mill; Tribology
• ISSN: 0043-1648; 1873-2577
• DOI: 10.1016/j.wear.2007.01.126

In this paper, premature failures of several work rolls on a cold strip mill were investigated. In order to study the work roll surface feature and failure mechanism, the chemical compositions, microstructures and the hardness of roll materials were examined. The stresses in the spalled area of the work roll have been calculated, and the stress states identified. The causes for the roll wear and damage have been identified in the study. The surface images of the work rolls have been studied, and the characteristics of wear have also been characterised for the damaged rolls. It has been found that the operating factors and metallurgical defects affected the roll service life in cold strip rolling.