Effects of melt pressure on process stability and bonding strength of twin-roll cast steel/aluminum clad sheet. (October 2017)

• Record Type: Journal Article
• Authors: Chen, Gang; Xu, Guangming
• Is Part Of: Journal of manufacturing processes. Volume 29(2017)
• Page Start: 438
• Page End: 446
• Publication Date: 2017-10
• Subjects: Clad sheet -- Twin-roll casting -- Melt pressure -- Bonding strength; Production management -- Data processing -- Periodicals; Manufacturing processes -- Periodicals; Procestechnologie; Productietechniek; Production -- Gestion -- Informatique -- Périodiques; Fabrication -- Périodiques; Manufacturing processes; Production management -- Data processing; Periodicals; 670.5
• DOI: 10.1016/j.jmapro.2017.09.004
• Languages: English
• ISSNs: 1526-6125

Abstract

Graphical abstract: Highlights: Melt pressure affects process stability and bonding strength. Intact sheet with good appearance can be produced under high melt pressure. Process stability decreases and side leakage and melt penetration occur under too high melt pressure. Misruns appear when melt pressure is too low. Bonding strength increases when melt pressure is high. Abstract: Besides casting speed and pouring temperature, melt pressure in cast-rolling zone also affects process stability and bonding strength of twin-roll cast steel/aluminum clad sheet. Different melt pressure in cast-rolling zone is attained by adjusting center channel size inside nozzle in this paper. Under high melt pressure, clad sheet with intact shape and good appearance can be produced. However, the process stability is low and defects like side leakage and melt penetration can occur when casting speed and pouring temperature fluctuate. When melt pressure is too low, the transverse flowing ability of melt decreases and misruns appear in the sheet. Melt wetting and distribution on steel surface are more uniform and solid/semisolid contacting time is longer under high melt pressure. As a result, bonding strength increases when melt pressure is high.