cold rolling · pdf filemill configuration for high strength steel (for reference) no.1 no.2...
TRANSCRIPT
A joint venture of Siemens, Mitsubishi Heavy Industries and Partners
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Brochure No. : June 2015/T05-0-N086-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.
A MHMM Rolling Technology primetals.com
Primetals Technologies Japan, Ltd.
COLD ROLLING MILL
Printed byFuji Xerox Service Link Co., Ltd.https://www.fxsvl.co.jp/
COLD ROLLING MILLWe are pleased to introduce our Cold Rolling Technologies developed to meet recent market requirements.
CONTENTS
Production capacity : over 800 Kton/year
1. TANDEM COLD MILL (TCM) ……… P3 - P10
2. REVERSING COLD MILL (RCM) ……… P11 - P16
Production capacity : approx. 200 Kton/year
3. DOUBLE COLD REDUCTION MILL (DCR) ……… P17 - P18
4. TEMPER/SKINPASS MILL (TPM/SPM) ……… P19 - P20
Production capacity : approx. 100 Kton/year
5. CLUSTER MILL ……… P21 - P26
Recent Market Trend
body structure designs that reduce mass and
harder products. Facilities are required to produce these products in higher volumes and under stable operating conditions.
Carrousel Tension Reel
Market
Solution
Excellent Product Quality
UCM-MILL HYROP-F: EDC by WRS : Carrousel Tension Reel Double AS-U :
1 2
The endless rolled strip is divided by the
high speed ROTARY SHEAR and
re-wound into coils.
The CARROUSEL type TENSION REEL
continuous coil changeover during
continuous rolling in the mill section.
Coil changeover operation is achieved
through automatic control blocks for
reliability and ease of operation.
Delivery Strip Handling Device
Technology Applied To Cold Rolling MillApplication of the UCM-MILL makes possible to roll all products with straight rolls, which will allow to get rapid start up. The operators can derive most stable rolling and shape controllability. Thanks to the horizontal rigidity created by shifting of intermediate roll, the user can control strip thickness deviation without jeopardizing the shape of the strip.
The mill is equipped with a high response Hydraulic Roll Positioning Device (HYROP-F), Laser Doppler type speed measuring device and X-ray type thickness gauge meters. This equipment, combined with a high performance, up-to-date Automatic Gauge Control (AGC)
exit of the mill, a modern designed shape measuring sensor and Automatic Shape Control (ASC) system is installed to guarantee the
To produce high surface quality
station at the TCM exit end is
essential. Vertical elevator type and
various other types of inspection
stations, such as the inline type,
two-side inspection.
Inspection Station
Feature of Mill Type
UCM-MILL was added intermeided Roll Bender mechanism to HCM-MILL.
UCMW-MILL was added work roll shift mechanism to UCM-MILL.
The UCM-MILL makes it possible to roll
products with straight rolls, allowing rapid
start ups.
See, page 5, 6.
HYROP-F System consists of
- Direct operated servo valve, FMV (Force Motor
Valve), specially developed for rolling mill
- Hydraulic push up cylinder with built-in precise
position detector
- Well arranged hydraulic piping for high response
- Exclusively designed Control System By the
combination of each component,
high performance and reliable roll load system
are realized.
HYROP-F System
For production of high quality strip,
roll management is a critical issue.
For this purpose, fully automatic high
speed roll changing equipment is
provided for the TCM.
Roll Changing Equipment
HYROP System component
Mill TypeIMR
BenderWRShift
WRBender
IMRShift
HCM
UCM
HCMW
UCMW
SUPPLY REFERENCE LIST & PRODUCT CATEGORY
CONTINUOUS TANDEM COLD MILLS newly installed in the world after 1980
No. User Products Start-up No. User Products Start-up
Galva
&
Sheet
Tin
&
Sheet
50Baoshan Steel
(Zhanjiang No.2, China)
Silicon&
Sheet
2017
44 Ternium(Mexico)
Galva&
Sheet2013
45Shanxi TaigangStainless Steel
(China)
Silicon&
Sheet2013
46 Baoshan Steel(China Zhanjiang)
Galva&
Sheet2016
24 Maanshan Steel(China No.1)
Galva&
Sheet2004
25 Baoshan Steel(No.4)
Galva&
Sheet2005
26 Lianyuan Steel(China)
Galva&
Sheet
2005/2010
21 Baoshan Steel(No.3)
Sheet 2000
22 TATA Steel(India)
Galva&
Sheet2000
23 Nisshin Steel(Toyo)
Galva&
Sheet2000
18 POSCO(Kwangyang No.4)
Sheet 1997
19 Hyundai Pipe(Korea)
1998
20 SUS/NSC(Thailand)
1998
Mill Type
15 TON YI(Taiwan)
Tin&
Sheet1995
2007Galva
&Sheet
2009Galva
&Sheet
Shougang JingtangSteel (China)
31
Maanshan Steel(China No.2)
29
35 Baoshan Steel(China BST)
Sheet
2013
2013Galva
&Sheet
Guangzhou JFE(China)
2010
2010
37 Shougan Qian'an(China)
2010
36
POSCO Vietnam(Vietnam)
Panzhihua Steel(China)
41
2013Tin
2013Tin&
Sheet
Shougang JingtangSteel (China No.3)
39
2011Galva
&Sheet
China Steel(Taiwan No.3 PLCM)
38
2009Galva
&Sheet
Jiuquan Steel(China)
32
16 ERDEMIR(Turkey)
Sheet 1995
17 NKK/TCRSS(Thailand)
Galva&
Sheet1997
2010Galva
&Sheet
SeverStal(USA)
33 2009Galva
&Sheet
34
Galva&
Sheet
Sheet1991
POSCO(Kwangyang No.2)
Nippon Steel(Yawata)
POSCO(Kwangyang No.3)
8
9
2007Galva
&Sheet
Union Steel(Korea)
30
43 POSCO Maharashtra(India)
2013
Galva&
Sheet
Galva&
Sheet
13
Mill Type
1990/2009
1990
1988/2006
Sheet
Sheet
Sheet
Sheet
Galva.
Sheet
Sheet
1988
1989
1982
1985
1986
1987
1987/2003/2007
1 Nippon Steel(Hirohata)
Sheet
Nisshin Steel(Sakai)
2
3
4
5
6
POSCO(Pohang No.2)
UPI(USA)
7
10
11
12
Kawasaki Steel(Mizushima)
NKK(Fukuyama)
POSCO(Kwangyang No.1)
14 Sumitomo Metal(Kashima No.2)
I/N Tek(USA)
DOFASCO(Canada)
China Steel(Taiwan)
Galva&
Sheet1993
Tin&
Sheet
Sheet
Tin&
Sheet
Galva&
Sheet
Tin&
Sheet
28 Wuhan Steel(China)
Silicon&
Sheet2006
27 Benxi Steel(China)
Galva&
Sheet2006
42 Hyundai HYSCO(Korea)
40 Wuhan Steel(China)
1992/2007
1992
PC CVC
Suppliedby
Suppliedby
PTJ Others
50plants 28plants 78plants(64%) (36%) (100%)
Market Share
Total
: Shiftable roll: Future plan
Notes
49 Tosyali Toyo Steel(Osmaniye, Turkey)
Tin&
Sheet
2016
15
11
12
6
35
39
40
20
Silicon Steel Tin StainlessCarbon
(64%)
Above Primetals Technologies Japan, Ltd. supply of 50plants since 1980 will mark 64% on the world share of the major Continuous TCM during this period
47 BaoTou Steel(China No.2)
Galva&
Sheet2015
48Guangxi Steel
(Fang cheng gang,China)
Galva&
Sheet2015
PTJ
1. TANDEM COLD MILL (TCM)
3 4
YROP System componen
Rolling load Rolling load
Work roll
bendingStrip
W
(Changed)
L (Fixed) L
Strip Work roll
bending
Intermediate
roll bending
Rolling load Rolling load
1 . Straight Work, Intermediate
3. Work roll and intermediate roll
4Hi-MILL IDEAL MILL UCM-MILL( L > W ) ( L = W )
Flat
1
IMRShifting
Intermediate Roll shifting at Welding Point
Flying Gauge (Width) Change for Continuous Rolling
Work roll
Intermediate roll
Work roll
1. TANDEM COLD MILL (TCM)
5 6
1.1 UCM-MILL The Simple Approach to Best Performance
1. TANDEM COLD MILL (TCM)
7 8
Severstal NA (After 2014, AK Steel) PL-TCM (Dearborn, USA)
Main Feature
the UCM-MILL's excellent shape controllability is an indispensable key technology.
developed based on our vast experience to meet these requirements.
Mill configuration for High strength steel (for reference)
No.1 No.2 No.3 No.4 No.5 No.6
Carbon steel UCM UCM UCM UCM
Tin Hiten 980 UCM UCM UCM UCM UCM
Hiten 1180 or more UCM UCM UCM UCM UCM UCM
Item
Material
Speed
Mill Type
Welder Type
No.
1.
2.
5.
3.
Description
Material
Thickness
Width
Coil weight
: Hot Rolled Carbon Steel
: Entry to 6.35 mm
: Delivery 0.37 (0.30) to 2.67 mm
No.1
No.2
No.3
Pickling speed
Rolling speed
Strip dividing speed
: Max. 290 m/min
: Max. 250 m/min
: 6Hi MILL (UCM)
: 6Hi MILL (UCM)
: 6Hi MILL (UCM)
No.4 : 6Hi MILL (UCM)
No.5 : 6Hi MILL (UCM)
Laser Beam Welder
Pickling Type4. i BoxOR Type
Item
Material
Speed
Mill Type
Welder Type
No.
1.
2.
5.
3.
Description
Material
Thickness
Width
Coil weight
: Hot Rolled Carbon Steel
: Entry 1 .6 5.0 mm
: Delivery 0.30 2.3 mm
No.1
No.2
No.3
Pickling speed
Rolling speed
Strip dividing speed
: Max. 200 m/min
: Max. 250 m/min
: 6Hi MILL (UCM)
: 6Hi MILL (UCM)
: 6Hi MILL (UCM)
No.4 : 6Hi MILL (UCM)
No.5 : 6Hi MILL (UCM)
No.6 : 6Hi MILL (UCM)
Laser Beam Welder
Pickling Type4. i BoxOR Type
No.1 No.2 No.3 No.4 No.5
Carrousel TR.
RotaryShear
Looper
TCM (5 Stands UCM)
Pickling Tank
Looper
Looper
Tension Leveller Side Trimmer
Pay-off Reel
Welder In-LineInspection
LINE CONFIGURATION
MAIN SPECIFICATION
Hyundai Steel PL-TCM (Korea)
MAIN SPECIFICATION
LINE CONFIGURATION
Carrousel TR.
Pay-off Reel
Welder
Side TrimmerPickling Tank
Tension Leveller
No.1 No.2 No.3 No.4 No.5 No.6
Rotary Shear
TCM (6 Stands UCM)
Looper
Looper
Looper
accuracy.
LINE CONFIGURATION
No.1 No.2 No.3 No.4 No.5
Carrousel TR.
Rotary Shear
Looper
TCM (5 Stands UCM)
Pickling Tank
Looper
Looper
Tension Leveller Side Trimmer
Pay-off Reel
Welder
Shougan Corporation has installed Coupled
Continuous Pickling and Tandem Cold Mill for the
electrical (Silicon) steel.
During rolling of hard material, the thickness
decreases sharply at the edge area. This is called
edge drop and is caused by longitudinal deviation of
rolling, minimized edge drop is essential. To reduce
the edge drop, the UCMW-MILL, is applied which
consists of a work roll shift mechanism added to the
Work rolls are shifted by means of hydraulic cylinders
provided in each shifting block on the drive side of
combining work roll shifting, intermediate roll
shifting, work roll bending, and intermediate roll
bending.
Work Roll Shift Mechanism
Item
Material
Speed
Mill Type
Welder Type
No.
1.
2.
5.
3.
Description
No.1
No.2
No.3
Pickling speed
Rolling speed
Strip dividing speed
: Max. 200 m/min
: Max. 1,200 m/min
: Max. 300 m/min
: 6Hi MILL (UCMW)
: 6Hi MILL (UCMW)
: 6Hi MILL (UCMW)
No.4 : 6Hi MILL (UCMW)
No.5 : 6Hi MILL (UCMW)
Laser Beam Welder
Pickling Type4. Shallow
MAIN SPECIFICATION
: Special Steel
2.0 to 3.0 mm
: Delivery 0.35 to 0.65 mm
: 750 to 1,300 mm
: Max. 30,000 kg
Material
Thickness
Width
Coil weight
Built for Cold Rolled Strip for electrical (silicon) steel
applications.
designed shallow bath tanks for easier removal of silicon
sludge.
The UCMW-MILL minimizes edge drop through the addition
of a work roll shifting mechanism.
UNIQUE FEATURES
By properly adapting all of the components, including the
UCM-MILL, mill guide, drive system, and coolant system, high
speed and stable rolling has been achieved.
Rotary Shear
Looper
Carrousel TR.
Welder
Pay-off ReelTCM (5 Stands UCM)
No.5 No.4 No.3 No.2 No.1
LINE CONFIGURATION
Item
Material
Speed
Mill Type
Welder Type
No.
1.
2.
4.
3.
Description
No.1
No.2
No.3
Rolling speed
Strip dividing speed
: Max. 650 m/min
: Max.1,300 m/min
: Max. 300 m/min
: 6Hi MILL (UCM)
: 6Hi MILL (UCM)
: 6Hi MILL (UCM)
No.4 : 6Hi MILL (UCM)
No.5 : 6Hi MILL (UCM)
Laser Beam Welder
MAIN SPECIFICATION
: Hot Rolled (Pickled) Stainless Steel
: Hot Rolled (Pickled) Carbon Steel
: Delivery 0.3 to 3.0 mm
: 730 to 1,630 mm
: Max. 30,000 kg
Material
Thickness
Width
Coil weight
MAIN SPECIFICATION
When Carbon steel and Stainless steel are processed on the
same line, the Tandem Cold Mill is usually applied in the form of
a continuous TCM without pickling line due to the difference in
the pickling process between carbon and stainless steels.
and coolant system design are optimized.
LINE CONFIGURATION
No.1 No.2 No.3 No.4 No.5
Carrousel TR.
Rotary Shear
Looper
TCM (5 Stands UCMW)
Pickling Tank
Looper
Looper
Tension Leveller Side Trimmer
Pay-off Reel
Welder
Item
Material
Speed
Mill Type
Welder Type
No.
1.
2.
5.
3.
Description
No.1
No.2
No.3
Pickling speed
Rolling speed
Strip dividing speed
: Max. 220 m/min
: Max. 2,000 m/min
: Max. 260 m/min
: 6Hi MILL (UCM)
: 6Hi MILL (UCM)
: 6Hi MILL (UCM)
No.4 : 6Hi MILL (UCM)
No.5 : 6Hi MILL (UCM)
Laser Beam Welder
Pickling Type4. Jet Bath
: Hot Rolled Carbon Steel
1.8 to 3.5 mm
: Delivery 0.15 to 0.55 mm
: 700 to 1,300 mm
: Max. 28,600 kg
Material
Thickness
Width
Coil weight
1. TANDEM COLD MILL (TCM)
9 10
1.3 Tin plate [Wuhan Iron & Steel No.4 (China)]
1.4 Stainless steel [Baoshan Stainless Steel (China)]
1.2 Silicon steel [Shougan Corporation / Qian’an (China)]
For Electrical (Silicon) Steels
Supply Record of UCM-MILL for Reversing Cold Rolling Millfor Carbon steel and Silicon steel from 1974
123456789101 11213141516171819
No. Customer Mill Type Start-upHitachi Metals, Yasugi, JapanToyo Kohan, Kudamatsu, JapanBorcelik, TurkeyJiangsu Jiagnan Industrial Group, ChinaChangshu Ev erbright Material Technology, ChinaChangshu Xingdao Adv anced Building Material, ChinaChangshu Ev erbright Material Technology, ChinaBeijing Shougang, ChinaYantai North Steel, ChinaMaanshan Iron & Steel, ChinaMaanshan Iron & Steel, ChinaChina Changshu Xinghai Advanced Building Material, ChinaChina Changshu Xingyu Advanced Building Material, ChinaChina Changshu Xinghai Advanced Building Material, ChinaZhejiang Southeast Metal Sheet, ChinaTainjin No.1 Steel, ChinaTainjin No.2 Steel, ChinaMaanshan Iron & Steel, ChinaACCIL Auto Steel Pv t. Limited, India.
UCMUCMUCMUCMUCMUCMUCMUCMUCMUCMUCMUCMUCMUCMUCMUCMUCM
HYPER-UCMUCM
Main FeatureThis mill is equipped with advanced an Automatic Gauge Control system (AGC) using a high response Hydraulic Roll Positioning Device (HYROP) and X-ray type thickness gauge meters to obtain a higher
In addition, to achieve high quality strip shape, this mill is equipped with an Automatic Shape Control system (ASC), which includes multi-zone cooling headers at the entry side of the mill and shape measuring sensors on the delivery side.
No.1 RCM in Everbright (China) Strip of 0.15t x 1,000w
with annual production capacities of 100,000 to 400,000 ton/y. The Reversing Cold Rolling Mill allows for the
combinations. Our mills have been rolling these products, combining easy operation and rapid start-ups under stable conditions, since 1974.
00
200
400
600
800
1000
1200
5 10 15 20 25 30
In addition to these technologies, based on our vast
and stable rolling conditions for high quality products.
Actual Rolling Speed of RCM
Date after 1st. Rolling (days)
Actu
al R
olli
ng
Sp
eed
(m
pm
)
0.40t
1.00t
1.15t
1.15t 1.5t
0.40t 0.29t
0.25t
0.55t
0.55t 0.70t
0.70t0.85t
0.85t0.85t
0.55t
0.30t
2. REVERSING COLD ROLLING MILL
1 1 12
2.2 Equipment layout
2.1 Start-up advantage
20002 0 0 12004200520052007200820062006200720082008200820082 0 1 02 0 1 02 0 1 02 0 1 32 0 1 5
Main Feature
rolls
UCM-MILL
1)+2)+3)
STRIP WIDTH
1)
2)
3)
WR Bending Effect
IMR Shift Effect
Pre-set Control for each width
Effective for strip edge shape
Effective for middle shape of strip
Effective for every part shape of strip
W type
M type
IMR Bending Effect
UCM-MILL CR-MILL ZR-MILL
2. REVERSING COLD ROLLING MILL
13 14
2.3.1 Mill Type
2.3.2 Strip Shape Control Function for UCM-MILL
2.3 Copper rolling
2. REVERSING COLD ROLLING MILL
15 16
Main Feature
When investigating the combination of roll diameter, there are two major limitations such as load limit to
contact stress between rolls. The graph on the right shows the relationship between these limits. The hatched part is the maximum allowable rolling force. The graph also shows the calculated reduction ratio at the maximum allowable load. The graph shows that the HYPER UC-MILL covers the range of the highest achievable reduction;
Optimized Combination of Work,Intermediate and Back-up Rolls
(Work Roll Diameter)/(Strip Width) = 0.18 - 0.24
A high strength spindle called the "MH Spindle" was
developed, with a strength 2.7 times stronger than a
conventional universal joint type spindle. The "MH Spindle"
makes it possible to drive the work rolls of the HYPER
UC-MILL, even though the work roll diameter is much smaller
than compared to a standard UCM-MILL. The spindle strength
comparison is shown on the left.
Maanshan Steel in China has started commercial
production in 2013 as the 1st HYPER UC-MILL
Type : Reversing Single Stand
Material : Silicon Steel
Product Thickness : 0.35 - 0.65 mm
Width Range : 900 - 1,280 mm
(Work Roll Diameter) / (Strip Width)
0.15 0.18 0.21 0.24 0.270.12
Load Limit due to roll contact stress
Load Limit due to strip shape
Reduction Ratio under above limit condition
0.30
HYPER UC-MILL
Conventional UCM-MILL
Strength Steel (HSS) rolling. This technology is also applicable for rolling high grades of non-grain oriented silicon
steel and tin products. The technology development is based on the following concepts:
- Optimized roll diameter combination (work, intermediate and back-up rolls)
- Development of a high strength spindle for WORK ROLL DRIVE
HYPER UC-MILLStandard UCM-MILL
0
0.1
0.2
0.3
0.4
0.5
Wo
rk R
oll
Dia
mete
r /
Str
ip W
idth
Passline
6Hi H
CM-M
ILL
6Hi U
CM-M
ILL
HYPER U
C-MIL
L
Conven
tiona
l 4Hi
Smaller Work Roll Diameter
2.4.2 High Strength Spindle
2.4.1 Reference (Comparison of Work Roll Diameter)
2.4.3 1st Stand (Maanshan Steel/China)
2.4.4 Qualification test of "MH Spindle"
2.4 HYPER UC-MILL
MH Spindle
3. DOUBLE COLD REDUCTION MILL
17 18
Nippon Steel Corp TPM
POSCO
Nagoya DCR
Kwangyang, Korea
Nisshin Steel Co., Ltd.
Ton-Yi Industrial
Sakai
Corporation (Taiwan)
Nippon Steel Corp
Toyo Kohan
Nagoya
Kudamatsu
JFE Steel TPM
Bao Steel
Chiba DCR
China
Toyo Kohan TPM
POSCO TPM
Kudamatsu DCR
Pohang, Korea DCR
Bao Steel TPM
Yichang, China DCR
Nippon Steel Corp.
POSCO
Yawata
Pohang, Korea
JFE Steel
Erdemir TPM
Chiba
(Revamping), Turkey DCR
JFE Steel
S Company
TPM
Kurashiki
(Revamping), Thailand DCR
TPM
DCR
TATA Steel (Netherland)
WIN Steel
(Former Hoogovens)
Wuhan, China
Nippon Steel Corp TPM
WIN Steel
Nagoya (Revamping) DCR
Wuhan, China
21 TPM
22 TPM
Tosyali Toyo Steel
Osmaniye, Turky23
TPM
19
20
16
17
18
14 DCR
15 TPM
12 TPM
13 TPM
No. Start-upApplicationUser Mill Type
TPM
11
10
9 TPM
8
1
No. User Start-up
4
Comb.
3 TPM
2
Mill Type Application
TPM
7 TPM
5
6 CSN (Brazil)
TPM
SUPPLY REFERENCE
Main FeatureUCM-MILL's function on DCR/Temper rolling :Both mill stands are of 6Hi UCM-MILL design for excellent shape controllability, heavy reduction capability, and stable rolling.
The DCR/Temper mill is designed to meet the customer's needs for double cold reduction and two-stand temper rolling. The DCR
process, after reduction in a tandem cold mill, further reduces the annealed strip on the No.1 stand and temper rolls the strip on the No.2
stand. This process imparts the desired mechanical strength to the strip. In two-stand temper rolling, the strip is temper rolled in both the
No.1 and No.2 stands to the required elongation ratios to obtain the desired mechanical characteristics.
High Productivity- High Speed Rolling- Automatic Strip Threading
High Quality Products- ASC with UCM function- High Response Push Up System (HYROP-F)- High Response AC Motor- Up-to-date AGC & AEC techniques AEC : Automatic Elongation Controll
For Ultra-Thin Products- Two kinds of Work Rolls : Large/Small Diameter
1. Mill Operation Mode DCR (Double Cold Reduction) & Wet Temper rolling
- Product thickness : 0.25 mm - Strip Width : 1,270 mm - Max. speed : Approx. 2,000 m/min - Capacity : Approx. 270,000 ton/year
Features
Specification1
2
3
4
5
6
7
Mill Type
AGC System
Coolant System
Skinpass oil System
Shape Control System
WR/IMR Change
BUR Bearing
NO. NO.1 std NO.2 stdEQUIPMENT
AppliedApplied(option)
Applied
Automatic Automatic
Roller Bearing
-
Roller Bearing
Applied(option)
Applied
Applied(for West Temper)
Applied(for West Temper)
6Hi UCM-MILLLarge WR & Small WR (option)
1
2
3
DCR
Wet Temper Wet Temper Wet Temper
No. No.1 std No.2 stdOperation Mode
Reduction (Wet)
Reduction (Wet)
Reduction (Wet)
Wet Temper
INLINE BATCH
High Productivity
- High Speed Rolling
High Quality Products
- ASC with UCM function
- High Response Push Up System (HYROP-F)
- High Response AC Motor
- Up-to-date AGC & AEC techniques
- Dry and Wet Multi-function Rolling Mode
- High Performance Dust Exhaust System
For Thinner and Harder Products
- Two kinds of Work Rolls : Large/Medium Diameter
1. Mill Operation Mode
DCR (Double Cold Reduction) & Temper rolling
- Product thickness : 0.10 0.80 mm
- Strip Width : 700 1,050 mm
- Max. speed : 1,500 m/min (TPM)
1,200 m/min (DCR)
- Capacity : Approx. 250,000 ton/year
Features
Specification
1
2
DCR
TemperDry Temper Dry Temper
NO. NO.1 std NO.2 stdOperation Mode
Reduction (Wet)(25~35%)
Reduction (Wet)(25~35%)
Wet Temper
Dry Temper
3.2 A-COMPANY
3.1 BAOSTEEL (Cold Rolling Sheet Steel Plant)
Wet Temper Wet Temper
1994
1995
1998
2002
2002
2005
2005
2013
2014
2014
2016
1965
1968
1970
1 9 7 1
1974
1 9 8 1
1 9 8 1
1983
1983
1990
1 9 9 1
1992
SUPPLY REFERENCE
Basic Mill application6Hi UCM-MILLs are supplied in response to recent requirements to roll harder material, such as hard tin plate and HSS, with improved strip shape control capability. 4Hi MILLs have been provided for rolling of softer steel grades.
Several types of SPMs have been supplied for Tin plate, Sheet, as well as Galvanized plate applications, to meet
a variety of customer requirements. Both Batch type and In-line SPMs are available. Recent application are as
follows:
- 2 stand 6Hi HCM, UCM-MILL
- Excellent elongation, shape control, and stable rolling of thin strip
- Wide range of materials from T2 to T5 grade can be rolled with one straight roll
- High speed roll changing
- Dust exhaust system with polisher for Dry rolling
Features
- 6MB, UCM-MILL
- Excellent elongation, shape control, and stable rolling
- Wide range of materials from soft steel (IF steel) to
high strength steel (1470MPa) can be rolled with one straight roll
- High speed roll changing
- Fume exhaust system
Features
- 5MB, 4Hi MILL application for the better quality
- High pressure spray type polisher
High pressure (20 MPa) demi-water spray
Better roll surface quality for WR & BUR
Effective spray with less splashing
- Brush roll type polisher
- High speed roll changing
Features
Examples of SPM type and application for different materials (Hardness)
Harder
Basic Mill type for each products and facility
- Tin plate : 2 stands 6Hi UCM-MILL
- Sheet : Single stand 6Hi UCM-MILL or 5MB*, 6MB*
- CGL : Single stand 4Hi MILL or 5MB*
- CA&GL : Single stand 6Hi UCM-MILL
* 5MB for CGL and 6MB for CAL are available for cost merit reasons
No.1 ROLL POLISHER No
.1 M
ILL
No
.2 M
ILL
No.1 ANTI CRIMPING ROLL
No.1 ROLL POLISHER
No.2 ROLL POLISHER
No.2 ROLL POLISHER
CROSS BREAKING ROLL
Layout
Mill Type or Application
Mill Type
4Hi MILL
HCM MILL
UCM MILL
Batch SPM
CAL
Application
mm)
mm mm mm mm
ConventionalCurrent Requirement
Conventional CurrentRequirement
12345
No. Customer Mill Type Start-up
SOME COMPANY
Inline (CAL) UCM (6Hi)CAL, UCM (6Hi)CGL & CAPL UCM (6Hi)CGL & CAL UCM (6Hi)CAL, UCM (6Hi)
FI
Fw
FI
Fw
5MB-MILL5Hi MILL with Effective Bender
4Hi MILL & High pressure spray type polisher
FI
FI FI
Fw
FI
Fw
6MB-MILL
FI
FI FI
Fw
FI
Fw
UCM-MILL6Hi MILL with Effective Bender
F I
Fw : WR Bender
: IMR Bender
: IMR Shift
4. TEMPER/SKINPASS MILL (TPM/SPM)
19 20
4.2 Inline CAL Skinpass Mill
4.1 Inline temper Mill
4.3 Inline CGL Skinpass Mill
20042006200620092 0 1 0
5. CLUSTER MILL
21 22
5.1 Advanced ZR-MILL/20Hi (KZR)
Our Technology Capability & Effect
KZR MILL
L.H TENSION REEL
ZR-MILL
R.H TENSION REEL
FEED LEVELLER
PAY OFF REEL
Main FeatureThe Advanced ZR-MILL (KZR) is a mill for the cold rolling of hot-rolled coils of stainless steel and other hard
supported in a 20Hi roll cluster arrangement and are contained inside a mono-block structure housing. As the result,
this mill makes high mill modulus come true .
With a conventional ZR-MILL, the bending system for the backing bearing shafts that control the shape (the AS-U
system) contains only 2 (shafts B, C) of the 4 upper backing bearing shafts (shafts A, B, C, D). As a result, the strip
other hard materials.
Our company produces Advanced ZR-MILL/20Hi (KZR), Advanced Split Housing ZR-MILL/20Hi (HZ) and CR MILL/12Hi (CR) for
steel, Silicon steel strips, High carbon steel and Copper alloy. Our company have actual result more than one handred mills for
Cluster mill.
Features
- Customer : NIPPON METAL INDUSTRY CO., LTD. Kinuura, Japan
- Mill Type : KZR-MILL/ZR21AN-52
- Mill Speed : 800 m/min
- Product : Stainless Steel 0.2 mm 1,320 mm
- Completion : 1991
Features
-100
-50
0
50
100
150
200
-600 -400 -200 0 200 400 600
-100
-50
0
50
100
150
200
-600 -400 -200 0 200 400 600 0
b) KZR-MILL (double AS-U)a) Convention ZR MILL (single AS-U)
+5 scaleUpper Limit
-5 scaleLo er Limit
(I-unit)
24
2 I-unit
Width Width
88
I-unit
(I-unit)
0
Single AS-U Double AS-U
Strip Shape control capability of Double AS-U is 2.8 times as high as
conventional single AS-U system (=242/88)
- Customer : NISSHIN STEEL CO., LTD. Sakai, Japan
- Mill Type : KZR-MILL/ZR21AN-52
- Mill Speed : 800 m/min
- Product : Special Steel 0.2 mm 1,300 mm
- Completion : 2008
Features
5.1.2 Comparison of strip shape controllability (calculated)
5.1.3 Actual Result
5.1.1 Layout
Main FeatureBecause the housing is split into upper and lower sections, there is a large gap between the upper and lower work rollers. This makes threading and the strip cutting cobble process easier.In a conventional ZR-MILL (ZR), the 20Hi rollers are supported in a cluster arrangement and are contained inside a mono-block structure housing. Although this structure is compact, the gap between the upper and lower work rolls is small, and extra work is required in some cases for the threading and the strip cutting cobble processes. For this reason, we developed and produced the Advanced Split Housing ZR-MILL (HZ) which splits the mono-block housing into an upper and lower section, supported by 2 outer housings. Because this HZ Mill has a housing that is split into an upper and lower section, the gap between the upper and lower work rolls is large, facilitating the threading and the strip cutting cobble processes. In addition, unlike the mono-block ZR-MILL, the work rolls can be used in nearly their full range regardless of the diameter of intermediate rolls 1 and 2, for greater operability. For above reason, HZ MILL receives especially a high evaluation for Silicon steel and special steel rolling.
BackingBearing Shaft
Assembly
Outer Housing
TopInner
Housing
BottomInner
Housing
Main Jack
Double AS-UDevice
PasslineAdjustment
Device- 21 type HZ-MILL for 4 feet
- Standard roll diameter:
- Work roll dia. : 80mm
- 1st IMR dia. : 138mm
- 2nd IMR dia. : 235mm
- B.BRG dia. : 406.4mm
- Width : Max.1,300mm
- Max. R.S..F : 10.8 MN
Features
5. CLUSTER MILL
23 24
5.2 Advanced Split Housing ZR-MILL/20Hi (HZ)
5.2.1 HZ-MILL Construction
HZ-MILL Inner Housing
1 ) High Shape Control Ability by Double AS-U
2) More easy strip threading and disposal broken strip by Large roll-open clearance
3) Improved Gauge Accuracy by High response direct main cylinder
4) More easy Operation by more free roll diameter combination
5) High Speed Stable Rolling by Neuro/Fuzzy shape control
6) Improved Pre-set Accuracy by measuring Rolling Force by Load Cell
Features
5) Neuro/Fuzzy Shape Control
High Speed Stable Rolling by Control of AS-U & 1st
IMR Shifting
3) High Response by Direct Main Cylinder
Improved Gauge Accuracy
More easy strip threading and
disposal broken strip
High Shape Control Ability(2.4 2.8 times Larger than
Single AS-U)
More Easy Operation
4) More free roll diameter combination
1 ) Double AS-U &1 st IMR Shifting during
2) Large roll-open clearance Approx.
80mm
6) Measuring Rolling Force by Load Cell
Improved Pre-set Accuracy
- Customer : Shougang Co.,LTD., China
- Mill Type : HZ-MILL/HZ21N-51
- Mill Speed : 800m/min
- Product : Silicon Steel 0.17mm 1,300mm
- Completion : 2011
Features
5.2.2 Main Feature of HZ-MILL
5.2.3 HZ-MILL Actual Result
The CR MILL/12Hi (CR) is a mill originally developed for the cold rolling of stainless steel, copper alloys, and nickel alloys. There are fewer roll levels than in a conventional ZR-Mill/20Hi and the CR MILL is superior in strip shape control characteristics. A large usable range of work roll diameters allows rolling of a vast variety of materials, including soft, hard and ultrathin, under stable and highly precise operating conditions. The CR MILL has been adopted to roll copper alloys and, in particular, full-hard materials.The Top and Bottom Back Up Roll Frames are split and allow for automatic roll changes, easier strip threading, and easier maintenance. In addition, an oscillation function has been added to the intermediate roll, preventing backup bearing marks from being transferred to the strip. This mill is used for materials which have strict surface requirements.Conversion of an existing 4Hi MILL housing to a CR MILL is possible.
= Features of the CR MILL =the CR MILL contains 12 rolls in a Cluster type arrangement,the CR MILL achieves excellent strip shape control through split type BUR, bending control of IMR, and leveling control with push up cylinder,
the CR MILL is capable of high-reduction rolling through the use of small diameter work rolls. 120 45
5. CLUSTER MILL
25 26
Top BUR Frame
Bottom BUR Frame
Chockless Work Roll (WR)
BUR CrownControl Motor
Mill Drive
Pinion Stand
Top BUR FrameIntermediate Roll (IMR)
12Hi Cluster Rolling Mill (CR-MILL)
CR-MILL
Levelling
BUR Crown Push Out
Bender Force
(DS) (WS)
(DS-WS)
Actual Data of strip shape control accuracyGreen deviation range 5I -unitYellow deviation range 10I -unit
Shape Controlling Function can be more powerful, by Top and Bottom BURs having Same Controlling Function, to Push-Out Each BUR bearing individually
- Customer : Outokumpu Stainless AB, Sweden
- Mill Type : CR-MILL
- Mill Speed : 800 m/min
- Product : Stainless Steel : 0.1mm 1,100mm
- Completion : 2006
Features
- Customer : Mitsubishi Electric Metecs Co., Ltd., Japan
- Mill Type : CR-MILL
- Mill Speed : 600 m/min
- Product : Copper alloy : 0.05mm 900mm
- Completion : 2007
Features
BUR CrownControl
IMR Bender
Levelling
WR
BUR
Top/Bottom BUR different Segmentation
Actuator for Shape Control
Top/Bottom Different Segmentation
Individual Push Out of Each Bearing
High Response Hydraulic Control
Non-Symmetrical Bender (WS/DS)
No Tapering on IMR
Quick Response Hydraulic AGC
Easy Operation
5.3 CR-MILL/12Hi (CR) 5.3.2 Shape Control Capability
5.3.3 CR-MILL Actual Result
5.3.1 Construction
Main Feature
Individual Push Out of BUR
Individual Push Out of BUR