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Annealing and pickling lines are used for the treatment of hot rolled (HAPL) and cold rolled (CAPL) stainless steel strip. The work-hardened strip requires annealing and surface scale removal both for the hot and cold rolled material.
In cooperation with leading terminal equipment suppliers CMI Chemline has a long history of supplying continuous pickling lines for stainless steel. The optimum design of our chemical process section consists of a combination of electrolytic and mixed acid pickling. The highly flexible design allows the line to adapt to the specific processing requirements of each steel grade, adjusting rapidly to operational parameters and varying acid concentrations involved in the pickling of different types of austentic, ferretic and martensitic stainless steels. Operating efficiently while maintaining top quality in light-gauge stainless steel and specialty metals requires close attention to detail, a challenge that has been fully met by our engineers.
In the domain of stainless steel the following applications are available:
- Hot Strip Annealing and Pickling Lines (HAPL)
- Cold Strip annealing and Pickling Lines (CAPL)
- Combined Hot/ Cold Strip Annealing Lines (H/CAPL)
- Direct Roll Annealing Pickling Lines (DRAP)
- Design features applicable specifically for stainless steel lines
- Specially arranged spray beams prevent the settling of sludge in line pickling tanks
- Continuous removal of sludge from the circulation system
- Modular V – shaped passage through the electrolytic pickling tank avoiding electrode damage
- Special design for the prevention of gas bubble forming on the strip surface during electrolytic pickling guarantees a uniformly pickled strip
- High turbulence pickling: ensures uniform pickling conditions & high heat transfer rates
- High pressure spray rinse arrangement: guarantees a clean surface without residual contamination
- Hook vibration: for uniform pickling
- Online instrumentation & automated pickling process: guarantees constant quality and optimized throughput, essential for high capacity lines
- Individual treatment steps & sequence: for different steel types and qualities
- Training of operators & after sales service: guarantees constant safe operation and high product while increasing up-time
- Optimized control of the pickling process based on CMI Chemline latest PPM (Pickling Process Management), along with our fully automated Acid Control Management System, ensure the environmentally safe operation of your plants using the best available technology
- Environmental protection starts inside the plant
- Closed vent process with a dedicated exhaust system and waste air treatment prevents escape of fumes from the pickling line
- Stand-by essential equipment (e.g. exhaust fan) ensures safe operation of the plant even under extreme working conditions
- Uninterrupted Power Supply (UPS) puts the plant into safe stand by mode in the event of power loss
