With annealing process speeds up to 800 m/min and entry/exit speeds up to 1,000 m/min, the tinplate annealing line (CAL) delivers continuous & stable operation for high yield. Capacities up to 500,000 tonnes are possible for the treatment of thin packaging steels down to 0.12 mm.
![CAL for packaging CAL for tinplate applications](https://webasset.fivesgroup.com/_Never_Delete_/8/d/csm_Packaging_steel_line_ecbebbf422.jpg)
Advanced technologies
deliver new grades
Stable operating conditions are critical for achieving the high yields required of your tinplate steel production lines.
Key technologies:
• Stein Digiflex® annealing furnace with heating, cooling & steering features
• Optimized roll profile through off-line and on-line thermo-mechanical models
• OptiLine™ software for simulating every aspect of your strip processing line
• FlashCooling®, specific blowing to produce high-ductile tin-plate grades
• Virtuo™ Level 2 solution, including heat and cool buckling prevention control
• Two Skin-pass quarto rolling mills working in tandem
RECORD PERFORMANCES
Line speed 1,000 m/min | Strip thickness <0.12 mm | Rapid cooling up to 75%H2 - 300°C/s |
![FlashCooling® FlashCooling® technology for ultra-rapid cooling](https://webasset.fivesgroup.com/_Never_Delete_/6/e/csm_Ultra-rapid_cooling_ac886192b7.jpg)
Ultra-rapid cooling
FlashCooling® technology
Our FlashCooling® technology with high H2 secures good strip flatness and high cooling rates for the tinplate steel production line, achieving 300˚C/sec from the highest annealing temperature. This enables you to produce the new generation of high-ductile tin-plate grades the market is increasingly interested in, such as thinner cylindrical bottoms for easy-opening cans.
Meanwhile, our Virtuo™ Level 2 solution controls the roll’s thermal crown and the heating pattern through the furnace, ensuring good uniformity for optimum product quality.
![CAL for packaging CAL for packaging applications](https://webasset.fivesgroup.com/_Never_Delete_/7/1/csm_Tinplate_CAL_d8b93ad120.jpg)
Case study: Tinplate CAL
BAOWU in China chose Stein Digiflex® furnaces for the tinplate lines at the Yichang and Meishan plants. These are among the fastest continuous tinplate annealing lines in the world, operating at up to 800 m/min process speed. Both furnaces have a length of 140 m, designed to process more than 2.4 km of strip inside the furnace.
Yichang plant | Meishan plant | |
Line capacity: | 425,000 t/y | 420,000 t/y |
Max strip width: | 1,050 mm | 1,080 mm |
Strip thickness: | 0.15 to 0.5 mm | 0.18 to 0.55 mm |