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Phone: + 46 (0) 8 756 70 60
E-mail: [email protected]
Internet: www.hermetik.com
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HERMETIK HYDRAULIK ABPhone: +49 (0) 2302 39 45 4-0
E-mail: [email protected]
Internet: www.hermetik.com
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DE-58458 Witten
GERMANY
HERMETIK PUMP INTERNATIONAL GMBH
Worldwide Copyright by HERMETIK, duplicating forbidden
IX. International steel conference17. 02.2015, Moscow
”Modern HERMETIK descaling technolgyfor materials withhigher carbon, nickel, chromium and silcon content“
Problem we are solving
Better quality of finish material
Reduction of energy
Reduction of spare part requirements
Reduction of maintenance efforts
Problem we are solving
Sticky scale due to:
Material quality
High alloy steel
Stainless steel quality
High silica content
Wrong furnace operation
Surface defects from caster
Problem we are solving
Technological problems:
Wear& tear on rollers
Unwelcome cooling
Lack in water supply
Variation of transport speed
Variation in width of ingots
Millscale Chemistry and Structures
Influence of distance to the steel surface for impact
Fundamentals – How to Achieve Maximal Impingement?
Descaling in Hot Strip Mills Impingement
The Pattern of the TORNADO HT-4 Spray
Fig. 7
Double Descaling in an Oscillation Mark
Millscale Chemistry and Structures
HERMETIK TORNADO versus Stationary Systems
HERMETIK DESCALING IMPACT COMPARISON
HERMETIK
ROTATING NOZZLE THE
WATER MILLING DESCALING
- Low water flow rate
- High descaling
efficiency
- Low energy
consumption
- Free of scale
Int. patent
Descaling Test. Comparing HERMETIK and Conventional Systems.
TSCR Technology
Temperature Results of the Rotary Tornado Water Milling Desclaer
TSCR TechnologyTemperature drop for different descaling conditions
Temperature drop
for hot strip in °C
Conventional descaler entry system
top + bottom side 60 – 65
Conventional descaler exit system
top + bottom side 55 - 60
Conventional descaler entry + exit system
top + bottom side (4 headers) 82 - 92
Rotary descaler TORNADO
only top side (trials) 39 - 41
Rotary descaler TORNADO
top + bottom side 46 - 50
Two Different Descaling Methods in Hot Strip Mill
The HERMETIK TORNADO Descaling (center path)
This is a coil at the exit of the
pickling line that shows the
differences of the surface
quality.
Excellent descaling effect with the HERMETIK water
milling descaler (center path)
Stationary high
pressure nozzle header
(sides)
TORNADO Descaling by HERMETIK Width 420 mm, High Alloyed Steel 50CrMo4
Completely and
perfectly descaled surface
Low temperature drop
Hot edges
Complete Systems- turn key
References
