Steel Strip Color Coating Lines

Description

Engineering company ENCE GmbH in collaboration with ANDRITZ METALS / АНДРИТЦ МЕТАЛЗ, Germany SUNDWIG GmbH / (ЗУНДВИГ ГмбХ) offers complex steel strip color and polymeric coating lines with the following basic characteristics:

Incoming material:	galvanized strip
Strip thickness:	0.2–2.5 mm
Strip width:	500–2000 mm
Coil weight:	2 — 32 tons
Process speed:	up to 200 m/min
Coating types:	polyester, epoxy, acrylic, PVC and others

The line consists of:

Input section: (similar to the strip galvanizing line)
- Coil rack
- Loading carriage
- Dual decoiler system
- Dual guillotine shears
- Butt-welding machine
- Looping pit
- Disc shears
- Stretching machine
- Stretching rollers
- Multistorey storage loop (accumulator)
Strip preparation section
- Strip surface degreasing bath with brushes
- Strip washing bath
- Electrolytic pickling bath
  - Designed for increasing the strip surface roughness
- Strip washing bath
Strip drying section
- Electric infrared furnace with ceramic reflectors and tungsten quartz shortwave lamps
  - It has a strip width control system and quickly switches off in case of shutdown
Precoating section
- Roller machine for two-side or one-side precoating (chemical coater)
- Electric infrared furnace for primer curing
- Designed for evaporating water vapor and solvent
- Provided with exhaust system which removes gaseous wastes to the incinerator (thermal incineration plant)
- Cooling rolls system
  - Rolls with water cooling; the strip is cooled down to 38°C
Strip color coating section
- Roller machine for two-side or one-side color coating (chemical coater)
- Electric infrared furnace for color coating curing
  - Designed for evaporating water vapor and solvent
  - Provided with exhaust system which removes gaseous wastes to the incinerator connected with the precoating system
Cladding coating section
- Laminator with a system of cladding rollers
  - The film is applied by hot laminating method (rollers apply softened film to the full width of the strip)
- Disc shears
  - Designed for cutting the side edges of the film
Strip straightening section
- Strip alignment system
- Stretch straightening machine (machine for straightening by stretching)
- Strip cooling section
Output section:
- Strip feeding device
- Vertical storage loop (accumulator)
- A feeding device with a mechanical side guide
- Surface quality control system
- Dual tension reel for finished strip (coiler)
- Strip marking plant
- Horizontal shears for finished strip
- Overhead crane
- Tilting cradles for finished coils
- Finished coils rack