1.4~4.0mm*1350mm (excellent)
Push-pull Acid Pickling Production line 200,000t/y
The acid pickling tanks are divided into 3 sections. Tank wall is
carbon steel structure lined with acid-resistance neoprene and
2-layer granite stone. This structure can avoid neoprene lined to
break when the granite stone is replaced. Between each tank
section, there is acid liquid squeezing roller and acid liquid
isolation room. At bottom, land with granite stone lining is at the
same horizontal level with down roller of squeezing rubber roller.
On the coil running platform, there is a PPH granite stone cover.
Squeezing roller is driven by frequency conversion, and during
threading process the coil end position status can be detected
through motor currency variation, which could avoid that the
thinner coils being overlapped inside the acid tank avoided.
Fe203+6HC1====2FeCl3+3H20
Fe304+8HC1====2 FeC13+FeC12+4H20
Fe0+2HC1====FeC12+H20
Fe+2HCl====FeC12+H2↑
In each acid tank, there is an acid liquid circling heating system.
The system adopts vertical graphite heat exchanger. The acid liquid
moves fast in turbulence form under the functions of tank wall
structure, thus speed for acid pickling is increased. New acid
would be added at constant volume from 3# acid liquid circling
tank, meanwhile filled into 2#, 1# tanks through liquid level
controlling system of acid liquid circling tank. Finally be piped
into waste acid liquid collection tanks from the 1# tank. Due to
the relative isolation among each acid liquid tank and their
independent circling, the acid concentration difference of each
tank could be effectively controlled.
Crane hoisting coils to skids →coil loading car→ decoiler (pressure
roller, anti-curve roller) → decoiling scraper → Deflector roll →
vertical guide roller → pinch roller straightener → crop shearer
→corner shearer(with scrap bucket) → vertical guide roller →
pre-washing trough → four-grade hydrochloric acid pickling trough →
four-grade washing trough (Including pre-washing section) → edge
blowing device → hot air dryer → II# pinch roller → looper (Both
ends are equipped with looper swing stand) → vertical guide roller
→ pinch centering machine → circle shearer (With waste edge
recoiler) → 3-roller tension roller → crosscut shearer → vertical
guide roller → steering pinch roller → recoiler → coil unloading
trolley → coil receiving stand→ Crane hoisting coils to storage
house
Basic Parameter| Steel type | Q195/235, ST12/13, SPHC, SPHD and 20# |
| Yield strength | 210~360N/mm2 |
| Tensile strength | 270~610N/mm2 |
| Coil thickness | 1.5~4.0mm |
| Coil width | 900~1350mm |
Business Coverage:
Acid pickling line, acid regenerating unit, cold rolling line,
hot-dip galvanizing line, hot dip aluminizing line, color coating
line, recoiling line, degreasing line, annealing line, temper
rolling line, tension leveler line, slitting line, cross cutting
line, electro tinning line, structural parts galvanizing line,
tunnel furnace, and automatic control system e
