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Printed byFuji Xerox Service Link Co., Ltd.https://www.fxsvl.co.jp/
HOT STRIP MILL
A MHMM Rolling Technology primetals.com
Primetals Technologies Japan, Ltd.A joint venture of Siemens, Mitsubishi Heavy Industries and Partners
Tokyo office: Shintamachi Bldg. 34-6, Shiba 5-Chome, Minato-ku, Tokyo 108-0014, Japan Phone: +81-3-5765-5231
Hiroshima Works: 6-22, Kanonshin-Machi, 4-Chome, Nishi-ku, Hiroshima 733-8553, Japan Phone: +81-82-291-2181 primetals.com
Brochure No. : June 2015/T04-0-N069-L4-P-V1-EN Printed in Japan © 2015 Primetals Technologies Ltd. All rights reserved.
The information (including, e.g., figures and numbers) provided
in this document contains merely general descriptions or
characteristics of performance based on estimates and
assumptions which have not been verified.
It is no representation, does not constitute and/or evidence a
contract or an offer to enter into a contract to any extent and is
not binding upon the parties. Any obligation to provide and/or
demonstrate respective characteristics shall only exist if expressly
agreed in the terms of the contract.
These estimates and assumptions have to be analyzed on a case-
to-case basis and might change as a result of further product
development.
Primetals Technologies excludes any liability whatsoever under
or in connection with any provided information, estimates
and assumptions. The provided information, estimates and
assumptions shall be without prejudice to any possible future
offer and/or contract.
Any use of information provided by Primetals Technologies to the
recipient shall be subject to applicable confidentiality obligations
and for the own convenience of and of the sole risk of the
recipient.
1 2
Over the past 50 years, Mitsubishi Heavy
Industries and Hitachi have individually
worked with the world steel industry
supplying advanced technologies, increasing
production and improving quality. In the face
of increased global competition, the steel
industry divisions of Mitsubishi Heavy
Industries and Hitachi jointed on October
2nd, 2000 and established a joint venture to
provide superior service and products.
Primetals Technologies Japan, Ltd. (PTJ) has
developed new key technologies for the hot
strip mill and has massive experiences not
only in the conventional rolling line but also
in the end-less rolling line of the hot strip mill.
PTJ can supply top-notch rolling technologies
as a power full partner for you!
...to increase product quality, conserve energy,
reduce labor costs, boost output, achieve greater
efficiency and raise overall productivity.
HOT STRIP MILL QUALITYADVANCING TECHNOLOGIES
Semi-Endless Rolling
Endless Rolling
Conventional Rolling
1) Slab Sizing Press
Features Higher slab width reduction up to
350mm
Various pressing patterns for
decrease of croploss
Short shutdown for installation to
existing plant
2) Roughing Mill
Main EquipmentEdger
Roughing mill
Hydraulic AWC system
Hydraulic AGC system
FeaturesHigher reduction of width and
thickness
Higher width and thickness accuracy
Passline adjustment device for stable
rolling operation
Quick roll change
3) Advanced Coil Box
Features Mandrelless transfer with side heat
shields
Prevention of temperature drop at
coil inner wrap and coil edge
Buffer function especially for endless
rolling
4) Crop Shear
Features Differential speed rotary crop shear
Quick knife changing
5) Descaler
Main Equipment Roughing scale breaker
Finishing scale breaker
Features High pressure descaler up to 400
MPa
Easy maintenance
6) Finishing Mill
Main EquipmentAdvanced pair cross mill (PC mill)
Mill stabilizer device (MSD)
Looper shape meter (LSM)
WR shift mill
Hydraulic AGC system
FeaturesHigher reduction rolling
Powerful and accurate strip crown &
Schedule free rolling
Extension of roll change interval
Quick roll change
9)
Main Equipment Bar-joining machine
Dynamic pair cross mill
Advanced downcoiler with Switch-over
function
Carrousel coiler
Features Endless rolling technologies proved
through many experiences in actual
plants
Endless Rolling Technology
7) Strip Cooling System
Main Equipment Intermediate bar cooling system
between RM and FM
Strip cooling system between FM and
DC
Features Intensive strip cooling
Wide range temperature control
High response control valve
8) Down Coiler
Main Equipment Hydraulic pinch roll
Hydraulic side guide
Polisher for pinch roll
Advanced downcoiler
Features Non-step expanding mandrel
Quick-open control (QOC)
Excellent coil shape and surface
Long life mandrel
Flying Shear TunnelFurnace
Re-heat Furnace
Re-heat Furnace
Bar-joiningMachine
Slab/ContinuousCasting Machine
1)
2)
3)
6) 9)
5) 7)8) 9)
5)
4)
7)
9)
9)
5)
4)
5)
4)
7)
7)
9)5)
5)1) 3)
LEADING-EDGE TECHNOLOGIES FOR HOT STRIP MILL
3 4
Anvil opening and slab feeding by pinch roll.
Slab
Anvil
Pinch Roll
Slab feeding stops and pressing by anvil
1. Construction
- Application of roller bearing for rotating and reciprocating parts
2. Pressing pattern
decrease cropping loss
3. Short shutdown time for installation in existing plant
st and 2nd
nd
After 2nd
4. Other features
Press force
Processing speed
Slab length before press
JSW Steel
Anshan Iron & Steel, China
Stop and Go Press
Features
Technical Data
Option
Recent Supply Record
SLAB SIZING PRESS
5 6
Hydraulic AWC system for Hot Rolling Mill Hydraulic AGC system for Hot Rolling Mill
Hydraulic AGC systemExcellent thickness accuracy can be achieved, from top end to tail end of the production, by providing hydraulic gap adjusting cylinders
with the AGC system on mill stands.
The hydraulic gap adjusting cylinders are located under bottom back-up roll chocks or on top back-up roll chocks. The cylinders installed
under bottom back-up roll chocks will also work for the pass-line adjustment and the ski-head control especially for the roughing mill.
The electro-mechanical servo valves precisely control the hydraulic cylinder position.
Hydraulic AWC systemExcellent width accuracy can be achieved by providing the hydraulic AWC system on the vertical edger(s), from top end to tail end of
the production.
PTJ will apply complete hydraulic cylinder operated width control system which will work as the Short Stroke Control (SS) for the top
end and tail end parts, and also work as Automatic Width Control System (AWC) for body part. The electro-mechanical servo valves
precisely control the hydraulic cylinder position.
*Hydraulic Gap Control
Main parameter
Slab thickness: 70 to 300 mm
Slab width: 650 to 2,200 mm
Edging force: up to 8,000kN
Main parameter
-Strip thickness: 0.8 to 25.4 mm
-Strip width: 650 to 2,200 mm
-Rolling force: up to 50,000kN
Roughing mill attached vertical edger with hydraulic AWC system
Hydraulic gap adjusting cylinder in mill stand
Recent Supply Record
HYDRAULIC AWC AND AGC SYSTEMSFOR HOT ROLLING MILL
Customer
ISDEMIR, Turkey
Baosteel No.3 HSM, China
Lianzhong Stainless Steel Co., China
Tonghua Iron & Steel, China
Benxi Iron & Steel, China
Baosteel Stainless Steel Branch, China
Tangshan Iron & Steel, China
Anshan Iron & Steel, China
Corus DSP, The Netherlands
Year
2008
2007
2006
2005
2005
2003
2003
2000
2000
AWC
x
x
x
x
x
x
x
x
x
RM HGC*
x
x
x
x
x
x
x
x
x
FM AGC
x
x
x
x
x
x
x
x
x
Customer
JSW Steel Dolvi, India
Formosa Ha Tinh Steel, Vietnam
TATA Steel Kalinganagar, India
Fuxin Special Steel, China
USIMINAS Cubatao No.2 HSM, Brazil
Hyundai Steel C-HOT, Korea
Dragon Steel, Taiwan
Tokyo Steel Tahara, Japan
Dongbu Steel, Korea
JSW Steel Vidyanagar, India
Year
2 0 1 7
2 0 1 5
2 0 1 5
2 0 1 3
2 0 1 2
2010
2010
2009
2009
2009
AWC
x
x
x
x
x
x
x
x
x
x
RM HGC*
x
x
x
x
x
x
x
x
x
x
FM AGC
x
x
x
x
x
x
x
x
x
x
7 8
mill to coil the transfer bars after roughing passes. The coil box
enables a shorter distance between the roughing mill and the
The mandrelless coil box contributes further to reducing the
temperature drop at the coil inner wraps in comparison with the
mandrel-type coil box. The mandrelless coil box also makes
space to install the side heat shields which contribute to
reducing the temperature drop at the coil edge.
Prevention of temperature drop at the coil inner wrap through
mandrel less coil transfer
Prevention of temperature drop at the coil edge through
adjustable side heat shields
Short-pitch coiling operation through higher coil speed
operation (up to 5 m/s) and the forced coil transfer operation
from coiling position to uncoiling position to enable the higher
productivity
temperature and uniform temperature over the whole length
Passing through the coil box without coiling is selectable
s
(20 mm to 55 mm thickness, over 2,000 mm width maximum
in reference plant) to enable a wide rage of carbon steel
production, as well as stainless steel production
PTJ’s designed mandrelless coil box has two selectable coil transfer operations. One is passive coil transfer without any positive
mechanical actions as a simple operation method. The other is forced coil transfer. The forced coil transfer system ensures smooth and
Mandrel Type Coil Box
Temperature Drop at Inner Wrap due to Heat Transfer to the Mandrel
Mandrelless Coil Box
Start of uncoiling at coiling
position
Start of forced coil transfer Ready for co i l ing of next
transfer bar
Completion of coil transfer
down to uncoiling position
Prevention of Temperature Drop at Inner Wrap (Strip Tail End)
Coiling Position Uncoiling Position Coiling Position Uncoiling Position
Forced Coil Transfer Operation
Comparison of mandrelless coil box and mandrel type coil box
Fuxin Special Steel, China
ISDEMIR, Turkey
Nakayama Steel Osaka, Japan
POSCO, Pohang No.2 HSM, Korea
Baosteel Stainless Steel Branch, China
2013
2008
2008
2006
2003
Features
Recent Supply Record
ADVANCED COIL BOX(MANDRELLESS COIL BOX)
9 10
Possibleto cut
Differential peripheral speed ratio (RU/RL)
Kn
ife g
ap
at
kn
ife v
ert
ical p
osi
tio
n/b
ar
thic
kn
ess
( g
o /
to
)
Cut
ting
limit
(go/
to)
Direction of rotation
goRU
RL
Impossibleto cut
Differential speedcutting cropshears
Conventionalcrop shears
Knife radius Cutting process Sheared profile
Knife clearance:g
RU>RL
RU=RL
g<o g=o g>o
g>og>og>o
RU
RL
RU
RL
1 2 3
Increase of knife gapallowance against a bar thickness
Transfer bars rolled at a roughing mill have shapes out of
such unsteady parts of the transfer bar as crops for stable
The differential-speed rotary crop shear is a unique product of
incorporates top and bottom drums with different diameters
transitionally changed from plus–zero–minus, which ensures
several operational and economical advantages to customers
(
The differential-speed type rotary crop shear of PTJ has
adopted the following features through long-standing
Since the differential speed rotary crop shear is insensitive to
the knife wear and extended knife gap ( ), sharp cutting
performance is assured, and the knife changing cycle is also
PTJ maintains a line-up of several sizes of crop shears from
The PTJ rotary crop shear is able to cut the end crops in very
optimization system, so that a remarkable improvement in the
crop
Robust design and high torsional rigidity with the application of
synchronizing gears on the drum shaft ends between top and
Transfer Bar Thickness:
Transfer Bar Width:
Shearing Force:
Speed:
(Design max 80 mm)
Cassette type drum retraction
Quick drum changing system (cassette type only)
Customized crop disposal system
Double-knife type drums
Hydraulic unclamping system
Crop optimization system
Knife contours
Retractable exit roller
In-line Knife Change Type
Allowable Knife Gap of Differential Speed Type Crop Shear
Cassette Drum Type
JSW Steel Dolvi, India
Formosa Ha Tinh Steel, Vietnam
TATA Steel Kalinganagar, India
Fuxin Special Steel, China
Hyundai Steel C-HOT, Korea
Dragon Steel, Taiwan
Dongbu Steel, Korea
JSW Steel Vidyanagar, India
ISDEMIR, Turkey
Zhangjiagang Pohang Stainless Steel, China
Tonghua Iron & Steel, China
Benxi Iron & Steel, China
Baosteel Stainless Steel Branch, China
Tangshan Iron & Steel, China
Anshan Iron & Steel, China
Recent Supply RecordTechnical Data
Optional Items
Features
DIFFERENTIAL-SPEED ROTARY CROP SHEAR
1 1 12
The pair cross mill (PC mill) was developed in 1980’s
and has contributed to the achievement of high
controllability. PTJ has enhanced the PC mill and is
now supplying a 3rd generation PC mill with a mill
stabilizer, the so-called Advanced Pair Cross Mill.
The advanded PC mill is simpler to operate and
easier to maintain.
The number of the roll cross devices is reduced to
less than one-fourth of those of the 1st generation
PC mill. The advanded PC mill has the capability for
higher reduction thru the use of a mill stabilizer to
reduce mill vibration. The mill stabilizer is installed
on the entry side housing and eliminates the
clearance between the chocks and housing during
operation. This feature will reduce the task of
maintaining the entry-side housing liner to approx.
one-third that of a conventional mill.
Higher reduction rolling without mill vibration through the
combination of PC mill and mill stabilizer
simple principle of roll cross (see below)
Stable operation with the elimination of clearance between
roll chocks and housing and symmetrical roll crown control to
reduce camber and the pinching problems
Reduction of impact force at the roll bite through the mill
stabilizer, resulting in the reduction of the damage and wear
on equipment
Higher reliability of equipment
Very few maintenance parts with long replacement interval
Possible to install the mill stabilizer to any type mills
Principle of roll cross Control of strip crown by roll crossCross Angle Strip Crown
Positive
1st Generation PC Mill 2nd Generation PC Mill 3rd Generation PC Mill
(Advanced PC Mill)
Enhanced PC Mill
Flat
Negative C = Se-Sc: Equivalent Roll Crown
: Roll cross angle
b : width of material to be rolled
Note : Sc=Constant (independent of cross angle)
Recent Supply RecordFeatures
ADVANCED PAIR CROSS MILL(PAIR CROSS MILL WITH MILL STABILIZER)
JSW Steel Dolvi, India
Formosa Ha Tinh Steel, Vietnam
TATA Steel Kalinganagar, India
Fuxin Special Steel, China
USIMINAS Cubatao No.2 HSM, Brazil
Hyundai Steel C-HOT, Korea
Dragon Steel, Taiwan
Dongbu Steel, Korea
JSW Steel Vidyanagar, India
ISDEMIR, Turkey
Boasteel, No.3 HSM, China
Tonghua Iron & Steel, China
Benxi Iron & Steel, China
Baosteel Stainless Steel Branch, China
2 0 1 7
2015
2015
2013
2012
2010
2010
2009
2009
2008
2007
2005
2005
2003
13 14
Grinding wheel
Overall grinding with ORP
CBN Grinding Wheel
2 0 1 1
2010
2008
2007
2006
2002
2002
2002
2001
2000
rolling
Cause of coil surface trouble
Coil surface trouble
<Overall grinding with ORP>
<Partial grinding with ORP>
- Step wear
Effect
ORP GrindingFunctions
Rolling schedule limitation
Recent Supply Record
Technical Data
Features
ON-LINE ROLL PROFILER (ORP)
20102007
2006
20022 0 0 1
15 16
To
rqu
e v
alu
e /
Nm
0
Torque Meter (–)
50
100
150
200
250
–800
–40
–20
0
20
40
60
80
100
120
–600 –400 –200 0
Distance from Strip Center (mm)
Str
ip S
hap
e (
I-u
nit
)
200 400 600 800
–800
–60
Distance from Strip Center (mm)
Str
ip S
hap
e (
I-u
nit
)
–40
–20
0
20
40
60
–600 –400 –200 0 200 400 600 800
–800
–60
Distance from Strip Center (mm)
Str
ip S
hap
e (
I-u
nit
)
–40
–20
0
20
40
60
–600 –400 –200 0 200 400 600 800
–800
–60
Distance from Strip Center (mm)
Str
ip S
hap
e (
I-u
nit
)
–40
–20
0
20
40
60
–600 –400 –200 0 200 400 600 800
Actual operationLooper shape meter
Measurement of torque value Total shape
1st order strip shape
LSM measures the tension distribution across the strip width through individually detected loads on segmented rolls, and then
LSM has superior advantages as follows:
- Easily interchangeable with existing loopers and LSM because the moment of inertia is small
- Easy replacement of segment roll for maintenance
mill stands during rolling operation
operations to enable higher strip shape quality and mill productivity
Reduction of pinching problems at strip tail end to enable higher productivity and stable rolling, especially thin-gauge rolling
The synchronized measurements of strip shape and off-centering to enable control of off-centering
Sensor type
Roller dimension
Strip width
Segment
Applicable scope
Torque meter
185 mm dia x 194 mm body length
1000 mm
TATA Steel Kalinganagar, India
Hyundai Steel B-HOT, Korea
2015
2013
2006
1
2) The calculated total shape can be divided into 0th, 1st, 2nd and 4th
3) Strip shape can be controlled according to the results of each order
2nd order strip shape
4th order strip shape
Example of measurement in actual operation
Recent Supply Record
Features
Technical Data
LOOPER SHAPE METER (TENSION METER)
17 18
FDT
Tem
pera
ture
Time
1 st Cooling
Zone
AST
CT
1 st CET
2nd Cooling Zone
Air Cooling Zone
(ACT)
2nd CET
FCT
Top Header
Bottom Header
Side SprayControl Valve
Head Tank
Lin
e
Head tank along cooling line
High response control valves
FDT
1st CET
AST
ACT
2nd CET
FCT
CT
: Finishing mill delivery temperature
: 1st cooling zone entry temperature
: Air cooling start temperature
: Air cooling duration time
: 2nd cooling zone entry temperature
: Finishing cooling temperature
: Coiling temperature
Ex. A Cooling Pattern for DP Steel
2 0 1 7
2 0 1 5
2 0 1 5
2 0 1 2
2010
2010
2009
2009
2008
2007
2004
2000
Recent Supply RecordFeatures
INTENSIVE STRIP COOLING SYSTEM
19 20
1 Sideguides
2 Pinch roll
3 Quick opening control
Pinch Roll
Unit Roll
Mandrel
Recent Supply Record
Other Essential Features
ADVANCED DOWN COILER
21 22
Clamp
Power source
Joining area Knife
Joiningarea
Crop
Clamp
Drive Motor
Press
Preceding Bar
Clamp Frame (for Preceding Bar)
Induction Heater
High-pressure descalerFollowing
bar
Preceding bar
ClampKnife
Crop
Succeeding Bar
Travel
Travel
Clamp Frame
(for Succeeding Bar)
Partial Descaling
Overlapping
Device
Joining Machine
Coil Box
Leveller Crop Disposal Device
Finishing Mill
Crop Shear Preceding Bar
Following Bar
1 Sheet Bar Joining Machine
Induction Heating Joining Machine in Operation
Super Deformation Joining Machine in Operation
Joining Sequence and Mechanism
Design of Super Deformation Joining Machine
The concept of the endless hot rolling was
introduced to meet demands for diverse
products of hot rolled steel sheets using a
cost-effective process compared to the
conventional batch-type process. Endless
rolling involves joining of the tail end of a
preceding bar and the head end of a following
bar after rough rolling. The repetitively joined
results in the endless rolling. This process has
the following advantages over the conventional
batch-type process:
1. Expansion of product lineup: Production of
rolling of thin and hard-to-roll materials.
2. Increase in productivity: Great reduction in
reduction of mill acceleration and
deceleration time.
3. Improvement of product quality:
Improvement in accuracy and uniformity of
4. Energy savings: Reduction of the mill acceleration and deceleration frequencies.
5. Increase of yield: Minimization of miss-rolling of thin and hard-to-roll materials: Application of tension at head and tail parts of bar.
1.
the area to be joined before overlapping.
2. The head of the following bar is partially overlapped on the
tail of the preceding bar by increasing the speed of the
following bar.
3. Both bars are joined by shearing action of the stationary
pendulum type-joining machine.
4. Crops on both sides are pushed off from the joint and
disposed.
[b] Super Deformation Joining (SDJ)
The
[a] Induction Heating Joining (IHJ)
JFE Steel
Joining Process
Joining Method
Induction Heating Joining (IHJ)
Joining Temperature
Super Deformation Joining (SDJ)
Characteristic of Equipment
Joining Time About 10 (sec)
Joining : Semi Solid(Solid Fraction 70%)
Joining : Semi-solid(Solid fraction 70%)
Within 1 (sec)
Joining: Super Deformationand Frictional Upset
Joining : 1000(Material temp.)
of joining table with this method.
Transfer bar width
Transfer bar thickness
Transfer bar temperature
25 to 35 mm
Layout Main Data
Partialdescaling
1Over
-lapping
2Joining
3Crop
disposal
4
Recent Supply Record
2006
1996
ENDLESS ROLLING TECHNOLOGY
23 24
Actual Operation Chart for Semi-endless rolling (t1.5 t1.2 t1,0 mm)
High Speed Shear (HSS)
Advanced DC with switch-over function
In addition to the transfer bar joining technology, the following
items are key technologies to implement for successful endless
rolling.
2) Shear to split long strip before coiling
3) Dynamic switching over of coilers during high- speed rolling
and coiling
PTJ is the only supplier in the world that can supply a complete
operation with PTJ’s endless rolling technology, with remarkable
accomplishments.
PTJ offers, in connection with the above, the following proven
technologies for the customer.
1) Advanced dynamic PC Mill
2) High-speed shear
3) Advanced down coilers with switch-over function (Option:
Carrousel coiler)
Dynamic PC Mill is designed to provide to dynamic APFC,
which produces high-quality products in combination with a
high-response work roll bending system at the
above-mentioned 5 hot strip mills.
Application and number of Dynamic PC stands are
customized in accordance with product range and other
requirements.
Dynamic PC Mill can also be effective for normal batch rolling
for compensation of thermal expansion of work rolls and
changes in other rolling conditions in bar.
- Max PC angle: 1.2 degrees
- Max spee : 0.04 deg/sec (in-bar)
Four-unit roll type hydraulic down coiler.
Equipped with;
- Hydraulic pinch roll with offset adjustment mechanism,
- Swinging gate
- Pneumatic strip feeding system
Strip thickness
Strip width
Threading speed
Rotary-type shear with single knife.
Equipped with eccentric mechanism, with which the drums
approach each other at shearing.
Long-life design knives.
F5 Total Force
F5 Ave. Gap
F5 WRB Force (kN)
F5 PC Angle (deg)
F5 Line Speed (m/s)
Deviation of Strip Thickness (mm)
: 0.8 – 5.0 mm
: 750 – 1,750 mm
(2,200 mm)
: Max. 20 m/sec
: 0.8 to 12.7 mm
: 750 – 1,750 mm
(2,200 mm)
: Max. 20 m/sec
Strip Thickness
Strip Width
Speed
High Speed Shear (HSS)
Advanced DC with switch-over function
ENDLESS ROLLING TECHNOLOGY
2 Key Technologies for Endless Rolling
25 26
- Slab sizing press
- 2Hi roughing stand (R1) and 4Hi roughing stand (R2)
with quick roll changing system
- R2 attached vertical edger with
automatic width control (AWC)
- Edge heater and bar heater
- Drum type crop shear
- Descaling facilities
- F1 attached vertical edger
Pair cross system (F1-F4)
Mill stabilizer device (F1-F4)
Work-roll shift device (F5-F7)
Work-roll bending system (F1-F7)
Hydraulic automatic gauge control system (AGC)
Hydraulic looper
Quick roll changing device
Hot-rolling oil system
Interstand cooling system
- Laminar cooling system
- Two down coilers with
hydraulic quick opening control system (QOC)
- Non-step expanding mandrel
- Coil conveyor system
Production Capacity
Steel Grade
Strip Thickness
Strip Width
Coil Weight
Low-alloy steel
Stainless steel
Production Data
Production Capacity
Steel Grade
Slab Thickness
Slab Width
Slab Length
Strip Thickness
Strip Width
Coil Weight
Low alloy steel
Non grain-oriented Si steel
Grain oriented Si steel
IF steel
DP & TRIP steel
Production Data
Downcoiler2DC + 1DC(Future)
Finishing MillFSB
Crop Shear
Edge Heater
Bar Heater4Hi-R2 with AWC Edger2Hi-R1
SSP
Reheating Furnace
HSB
HeatHoldingCover
- One additional down coiler
1,880 mm deluxe hot strip mill with short delivery time
- Vertical edger with automatic width control (AWC)
- One heavy-duty 4Hi roughing stand with quick roll
changing system
- Mandrelless coil box
- Drum-type crop shear
- FSB (No water leakage during stainless steel rolling)
- F1 attached vertical edger
Advanced pair cross system
(PC mill with mill stabilizer device) (F1–F4)
Work roll bending system (F1–F7)
Hydraulic automatic gauge control system (AGC)
Quick roll changing device
Hot rolling oil system
- Laminar cooling system
- Two down coilers
Stainless steel branch HSM for Baoshan Iron & Steel Co., Ltd.
BAOSTEEL NO.3 HOT STRIP MILL PROJECT (Shanghai, CHINA) BAOSTEEL STAINLESS STEEL BRANCH HSM (Shanghai, CHINA)
Down Coiler
Mandrelless Coil Box
Heavy Duty Roughing Millwith AWC Edger
Reheating Furnace
FSBCrop Shear
HSB
Finishing Mill
LINE SPECIFICATION
LINE CONFIGURATION
LINE CONFIGURATION
UNIQUE FEATURESLINE SPECIFICATION
Future Phase
Start-up Phase
UNIQUE FEATURES
REFERENCE
27 28
- Vertical edger with automatic width control (AWC)
- 4Hi roughing mill
with quick roll changing device
- Mandrelless type coil box
- Drum type crop shear
with quick drum changing device
- Descaling facilities
Pair cross system (F1–F4)
Mill stabilizer device (F1–F4)
Work roll shift device (F5–F6)
Work roll bending system (F1-F6)
Hydraulic automatic gauge control system (AGC)
Hydraulic looper
Quick roll changing device
Hot rolling oil system
Interstand cooling system
- Laminar cooling system
- Two down coilers with
hydraulic quick opening control system (QOC)
- Non-step expanding mandrel
- Coil conveyor system
Production Capacity
Steel Grade
Slab Thickness
Slab Width
Slab Length
Strip Thickness
Strip Width
Coil Weight
High-strength steel
Production Data
Finishiing Mill
Finishiing MillF1
1
Down Coiler
FSB
(Future)AWC Edger
HSB
Crop Shear
Mandrel LessCoil Box
- One additional roughing mill
- One additional down coiler
Future Phase
Start-up Phase- Slab sizing press
automatic width control (AWC)
quick roll changing device
- Drum-type crop shear
- Descaling facilities
Pair cross system (F1–F4)
Mill stabilizer device (F1–F4)
Hydraulic automatic gauge control system (AGC)
Hydraulic looper
Quick roll changing device
Hot rolling oil system
Interstand cooling system
- Laminar cooling system
- Three down coilers with
hydraulic quick opening control system (QOC)
- Non-step expanding mandrel
- Coil conveyor system
Production Capacity
Steel Grade
Slab Thickness
Slab Width
Slab Length
Strip Thickness
Strip Width
Coil Weight
High-strength steel
Production Data
Start-up Phase
2,180 mm first hot strip mill in Turkey supplied by PTJ 2,250 mm hot strip mill supplied by PTJ in India will start up in 2009
ISDEMIR HOT STRIP MILL PROJECT (Iskenderun, TURKEY) HOT STRIP MILL PROJECT FOR JSW STEEL LIMITED (Toranagallu, INDIA)
FSBHSB
Down Coiler
Crop Shear (Future)
SSP AWC Edger
UNIQUE FEATURESLINE SPECIFICATION
UNIQUE FEATURESLINE SPECIFICATION
LINE CONFIGURATION LINE CONFIGURATION
REFERENCE
29 30
- Dynamic pair-cross system equipped on the
which can achieve powerful crown control even
gauge-change function necessary for semi-endless
rolling
higher reduction
- Ultra-fast cooling system installed on the run-out
table for cooling the strip rapidly to the target
coiling temperature in a shorter cooling zone
- High-speed strip shear for cutting the strip to
suitable length using two knife drums and a
coiling with two mandrels
Innovation Phase
- Looper shape meter (LSM) for measurement of
stable rolling operation
- Mill stabilizer device for prevention of mill vibration
Start-up Phase
Carrousel Coiler
Roughing Mills
Production Capacity
Steel Grade
Slab Thickness
Slab Length
Strip Thickness
Strip Width
Coil Weight
: Low-carbon steel
High-strength steel
Production Data
Type of Mill
Looper
Strip Cooling
Strip Shear
Coiler
Line Speed
: Looper with shape meter (#4 looper)
: Ultra-fast cooling type
: Carrousel reel and wrapper roll type
Line Data
Semi-endless rolling process on compact hot strip mill
TATA STEEL EUROPE DIRECT SHEET PLANT (Ijmuiden, THE NETHERLANDS)
Finishing Mills
UNIQUE FEATURES
LINE CONFIGURATION
LINE SPECIFICATION
REFERENCE
31 32
Roughing mills
Continuous
Casting
Machine
Crop ShearTunnel
FurnaceEdger
Coil Box
R1 R2
FSB
F2 F5F1
Finishing mills
F4F3 F6 #1 DC
-Tandem operation of two roughing mills independently
- Mandrelless coil box
Hydraulic automatic gauge control (AGC) in all stands
Pair-cross mill (PC Mill) for F2 and F3
Work roll bending system in all stands
Hot rolling oil system in all stands
Mandrel-Less Coil Box
Overview of Plant
G Steel (formerly Siam Strip Mill Public Co., Ltd.) plant in Thailand is the largest integrated hot rolled coil products manufacturer in
Southeast Asia. It comprises the three basic production processes of steelmaking, continuous casting and hot rolling mill integrated into
a close-coupled production line so called “Mini Mill.”
PTJ supplied not only the hot rolling equipment and its auxiliaries, such as water treatment plant, cranes, sub-station, etc. but also the
civil and building construction and installation for whole the production process equipment, on turn-key basis.
G STEEL PUBLIC COMPANY LIMITED (Rayong, THAILAND)
Production Capacity
Steel Grade
Strip Thickness
Strip Width
1.5 million tons/year
(Start-up phase)
Medium-carbon, High-carbon
Production Data
LINE SPECIFICATION
LINE CONFIGURATION
UNIQUE FEATURES
Finishiing MillNo.3 DC(Future)
Down Coiler
- Slab sizing press
- Vertical edger (E1) with
automatic width control (AWC)
- 2Hi roughing mill (R1)
- Vertical edger (E2) with
automatic width control (AWC)
- 4Hi roughing mill (R2) with
quick roll changing device
- Heat Holding Cover
- Drum-type crop shear
- Descaling facilities
Pair cross system (F1–F4)
Mill stabilizer device (F1–F4)
Work roll shift device (F5–F7)
Work roll bending system (F1-F7)
Hydraulic automatic gauge control system (AGC)
Hydraulic looper
Quick roll changing device
Hot rolling oil system
Interstand cooling system
- Laminar cooling system
- Two down coilers with
hydraulic quick opening control system (QOC)
- Non-step expanding mandrel
- Coil conveyor system
Production Capacity
Steel Grade
Slab Thickness
Slab Width
Slab Length
Strip Thickness
Strip Width
Coil Weight
High-strength steel
SUS)
6.5 SUS)
1524 SUS)
Production Data
- One additional down coiler (No.3 DC)
Future Phase
Start-up Phase
2,050 mm Semi-Continuous hot strip mill supplied by PTJ in Taiwan has started up in 2010Doragon Steel Corporation, a member of CSC Group, has been a manufacturer of long product in Taiwan. It promotes modernization and
expansion project in the factory. Dragon Steel Corporation
HOT STRIP MILL PROJECT FOR DRAGON STEEL CORPORATION (Taichung, TAIWAN)
FSBHeat Holding CoverHSB
No.3 RF
Crop Shear
2Hi-R1SSP4Hi-R2 with AWC Edger
Reheating Furnace
UNIQUE FEATURESLINE SPECIFICATION
LINE CONFIGURATION
REFERENCE
33 34