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Stainless steel rolling mills are central to converting cast slabs or plates into thin, uniform coils for downstream processing in food, pharmaceutical, and architectural applications. Shijiazhuang Faith Machinery Co.,Ltd offers a stainless steel rolling mill line designed for tight thickness control, surface quality, and operational flexibility.
Process Overview
Material enters the mill as preheated slabs or plates. An entry table feeds the steel through roughing stands, where large thickness reductions occur, followed by finishing stands that bring the strip to final gauge. Interstand spray sections and cooling beds regulate temperature to promote desired microstructure and mechanical properties, critical for corrosion resistance. After achieving target thickness—ranging from 0.3 mm to 5 mm—the strip passes through a tension leveler to remove residual camber and coil set before recoiling.
Key Equipment Components
Roughing Mill Stands: Four‑high or six‑high roll configurations handle heavy reductions while minimizing roll deflection.
Finishing Stands: Precision roll gap controls, often servo‑driven, ensure thickness tolerances within ±0.02 mm.
Inter‑Stand Cooling: Automated spray headers cool the strip uniformly, reducing thermal gradients and material distortion.
Tension Leveler: A multi‑bar leveler upstream of the recoiler corrects residual stresses and improves flatness.
Recoiler: Hydraulic or motor‑driven recoilers with variable wrap tension accommodate coil IDs of 508 mm or 610 mm.
Control and Automation
A distributed PLC network synchronizes mill speed, roll gap adjustments, spray cooling, and tension control. Laser thickness gauges and infrared pyrometers provide real‑time feedback for closed‑loop control of roll positions and cooling water flow. An HMI allows operators to store and recall “recipes” for different stainless grades—304, 316, duplex—minimizing setup times.
Customization and Material Grades
Mill configurations vary by product mix: duplex stainless steels require more aggressive cooling to avoid sigma phase formation, while austenitic grades benefit from tighter tension controls to prevent strip wandering. By offering modular finishing stands and spray circuits, Faith Machinery’s stainless steel rolling mills adapt to evolving customer requirements without major line overhauls.
After‑Sales Support
Faith Machinery provides on‑site commissioning, operator training on mill operation and maintenance, and preventive maintenance schedules for roll bearing greasing, hydraulic system checks, and alignment verification. A stocked inventory of critical wear parts—roll shells, gland seals, cooling nozzles—ensures rapid response to minimize downtime.
