Entry section
Uncoiling, welding and strip accumulation support steady operation.
Hot Rolled Stainless Steel HAPL
Hot annealing and pickling line for No.1 stainless steel strip.
HAPL processes hot rolled black coil through annealing, scale breaking or shot blasting, acid pickling, rinsing and drying for No.1 stainless steel production.
Overview
For hot rolled black coil and wide-gauge stainless steel programs.
HAPL is selected when oxide scale is heavy and the line needs both thermal treatment and strong descaling before mixed acid pickling.
- Suitable for 200, 300 and 400 series hot rolled stainless steel in benchmark data.
- Combines furnace treatment with mechanical scale removal and chemical pickling.
- Useful for No.1 product routes and hot-to-cold plant transition.
Process Route
Heavy-scale stainless strip needs mechanical and chemical descaling.
The line is configured to break and remove hot rolling scale before final rinsing and drying.
Annealing
Furnace treatment prepares the stainless strip for downstream descaling.
Scale removal
Scale breaker, shot blasting, electrolytic pickling or mixed acid pickling can be combined.
Rinse and dry
Rinsing, drying and optional skin-pass sections prepare No.1 products for shipment or further processing.
Parameters
HAPL data extracted from the workbook.
Use this data to define the first engineering boundary for a hot rolled annealing and pickling project.
| Item | Workbook Data | Engineering Note |
|---|---|---|
| Typical use | Hot rolled black coil annealing, mechanical descaling and chemical descaling | Target product is commonly No.1 stainless steel strip |
| Capacity range | 150,000-600,000 t/a, or configured by tph | Benchmark cases include different furnace and speed levels |
| TV value | 100-200 in domestic samples | Useful when comparing hot strip processing intensity |
| Pickling media | Mixed acid or electrolytic pickling after mechanical descaling | Selected by grade, surface target and emission limits |
| Key decision | Scale-breaking method, furnace duty and acid section capacity | These choices control surface quality and operating cost |
Line Value
Reliable No.1 production starts with scale control.
JINYE evaluates strip thickness, scale condition, throughput and environmental limits before specifying the descaling chain.
Wide gauge range
Useful for hot strip programs covering thick stainless steel coils.
Descaling depth
Mechanical and acid sections are configured to remove heavy oxide scale efficiently.
No.1 readiness
Rinsing and drying protect the final surface before recoiling or downstream processing.
Project fit
Capacity and layout are matched to furnace fuel, water, exhaust and wastewater conditions.