New Generation Steel Strip Continuous Annealing
Hot Dip Galvanizing (Aluminizing) Technology --- JJRS-Sendzimir
Consolidating the advantages of the traditional technology " Improved Sendzimir" and "United States Steel Corp", and integrating the independently researched and developed
regenerative nozzle and waste heat efficient recycling technology,
the technology R&D team of Beijing JJRS Technology Development
Co.,Ltd, launched a new generation of steel strip continuous
annealing hot dip galvanizing process contrl technology based its
latest self-designed process control technology by in-depth study
and analysis, which is named as " JJRS-Sendzimir".
The plant consists of several furnaces in line, which operate
independently with a common charging system. The Single-Coil
Lifting Hearth Furnaces SCL are loaded by the charging machine,
which moves under the furnaces. From a central charging and
discharging station the charging machine takes the coil and
transfers it to the individual chamber. Each furnace unit is loaded
with one coil only.
The furnace system is working with electric or natural gas heating.
With fuel heating the burners are installed in δ-tubes, which allow
indirect heating of the furnace atmosphere. The recuperative
burners are equipped with heat exchangers for heating the incoming
combustion air by the outgoing flue gas.
The furnaces are gas tight for processing the strips in inert gas
atmosphere. For complete burning of adhering rolling oil, which
evaporates during heating up the strip, the furnace line can be
equipped with a thermal oxidizer.
With Single-Coil annealing there is no need for complex batch
assembly, considering coils of the same size, alloy composition and
annealing program.
For bigger batches of similar coils, the Multi-Coil Annealing Line
MCL is the right choice. Here the furnaces are loaded with a batch
of the same coils.
Specific benefits of SCL:
Individual short heating-up and cooling time
No overheating of coil edges
Less space requirement
Individual annealing of a single coil
In time annealing
Integrated fully automatic charging
Automatic connection to warehouse system
Individual recording of the processing
Extendable line arrangement
High availability
Indirect gas firing or electric heating system
Specific benefits of MCL, besides the above mentioned:
Treatment of large batches
Homogeneous annealing temperature
Extendable line arrangement
Indirect gas firing or electric heating system
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
Finish coating hot air drying | 1 | | B | B | B | B | A | B | A/B | A/B |
Tandem hot air purge |
bridle roll | 1 | | B | B | B | B | A | B | A/B | A/B |
Double roll, double drive, single pneumatic press roll, pneumatic
disc brake.The bridle roll is a polyurethane rubber roll. |
Exit looper | 1 | | B | B | B | B | A | B | A/B | A/B |
The tower-type looper is driven by motor, reducer and sprocket
chain.The loop height is 200 meters. |
double roll centering machine | 1 | | B | B | B | B | A | B | A/B | A/B |
Double roll hinge - shaft alignment. The centering roll is nitrile
rubber roll |
