Hot Dip Galvanizing (Aluminizing) Technology --- JJRS-Sendzimir
Excellent Hot dip galvanizing Line 0.15mm~0.6mm*700mm 80,000TPY (
steel metal)
Beijing JJRS Technology Development Co., Ltd. registered in
national high tech park-Beijing Economic and Technological
Development Zone, is high-tech enterprise specialized in the
complete set of metallurgical equipments, intensive processing of
steel strip and metal surface coating engineering project, with the
integration of mechanism, optics, electric and hydraulic pressure.
JJRS is professional on turn-key projects, from general planning,
designing, to manufacturing, installing, commissioning and
servicing. Besides, our business also covers single equipment’s
designing, manufacturing and installing, as well as electric
transmission, control system and spare parts. All basing on these
supporting businesses, we mark out a developing strategy that
taking metal strip intensive processing and color coating
production lines as main, and the associated industry products as
supplement.
Surface Preparation
When the fabricated steel arrives at the galvanizing facility, it
is hung by wire or placed in a racking system which can be lifted
and moved through the process by overhead cranes. The steel then
goes through a series of three cleaning steps; degreasing,
pickling, and fluxing. Degreasing removes dirt, oil, and organic
residues, while the acidic pickling bath will remove mill scale and
iron oxide. The final surface preparation step, fluxing, will
remove any remaining oxides and coat the steel with a protective
layer to prevent any further oxide formation prior to galvanizing.
Proper surface preparation is critical, as zinc will not react with
unclean steel.
Galvanizing
After surface preparation, the steel is dipped in the molten (830
F) bath of at least 98% zinc. The steel is lowered into the kettle
at an angle that allows air to escape from tubular shapes or other
pockets, and the zinc to flow into, over, and through the entire
piece. While immersed in the kettle, the iron in the steel
metallurgically reacts with the zinc to form a series of zinc-iron
intermetallic layers and an outer layer of pure zinc.
Inspection
The final step is an inspection of the coating. A very accurate
determination of the quality of the coating can be achieved by a
visual inspection, as zinc does not react with unclean steel, which
would leave an uncoated area on the part. Additionally, a magnetic
thickness gauge can be used to verify the coating thickness
complies with specification requirements.
Two Core of " JJRS-Sendzimir"
Compared with the traditional technology, " JJRS-Sendzimir" method
can greatly increase productivity. For its:
- High temperature flame on-time heating technology: In the heating
furnace, steel strips from the normal temperature of 20 C can be
heated directly to the re-crystallization temperature zone of strip
steel in the non-oxidation atmosphere.
- Zero heat preservation and energy saving concept: On the premise of
guaranteeing the annealing and restoration effects, heat energy can
be reasonably allocated, steel strip heating is conducted as far as
possible in the flame heating section of high thermal efficiency to
shorten the length of reduction section, so as to improve
productivity as much as possible and reduce the manufacturing and
operation cost of spare parts.
Technology Patent of " JJRS-Sendzimir"
The launch of " JJRS-Sendzimir" depends on a number of technology
patents innovated by ourselves.
- No-oxidation nozzle burner tehnology
- Steel strip constant pressure thermal treatment furnace
- Nozzle arrangement mode (Flame gas orientation heating technology)
- Hot dip galvanizing technology
- Regenerative no-oxidation patent technology
- Low thermal value gas (Blast furnace gas) radiant tube furnace
- Energy saving radiant tube patent technology
- Process heat recovery patent technology
- Energy saving furnace roller
- Software copyright: galvanized steel strip line control software
| Name | Excellent Hot dip galvanizing Line |
| Application | Building Material |
| Width | 700mm |
| Thickness | 0.15mm-0.6mm |
| Capacity | 80,000t/year |
| Zinc Coating | 30-300g/m2 |
| Component | entry looper etc. |
| Keyword | Excellence Hot dip galvanizing Line |
| Type | Continuous |
| Process | Hot dip |
| Coil Material | steel metal ss cs |
| Material | Hot rolled coil, cold rolled coil
|
