modern hermetik descaling technolgy for materials with...

Phone: + 46 (0) 8 756 70 60

E-mail: info@hermetik.com

Internet: www.hermetik.com

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SE-187 62 Täby

SWEDEN

HERMETIK HYDRAULIK ABPhone: +49 (0) 2302 39 45 4-0

E-mail: info@hermetikpump.de

Internet: www.hermetik.com

Wullener Feld 61

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