cold rolling · pdf filemill conﬁguration for high strength steel (for reference) no.1 no.2...

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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)


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)


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


5 6

1.1 UCM-MILL The Simple Approach to Best Performance


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)


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


: Entry 1 .6 5.0 mm

: Delivery 0.30 2.3 mm

No.1

No.2

No.3

Pickling speed

Rolling speed


: Max. 200 m/min

: Max. 250 m/min

: 6Hi MILL (UCM)

: 6Hi MILL (UCM)

: 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


Carrousel TR.

Rotary Shear

Looper

TCM (5 Stands UCM)

Pickling Tank

Looper

Looper


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


: 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)


LINE CONFIGURATION

Item

Material

Speed

Mill Type

Welder Type

No.

1.

2.

4.

3.

Description

No.1

No.2

No.3

Rolling speed


: Max. 650 m/min

: Max.1,300 m/min

: Max. 300 m/min

: 6Hi MILL (UCM)

: 6Hi MILL (UCM)

: 6Hi MILL (UCM)



Laser Beam Welder

MAIN SPECIFICATION

: Hot Rolled (Pickled) Stainless Steel

: Hot Rolled (Pickled) Carbon Steel


: 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


Carrousel TR.

Rotary Shear

Looper

TCM (5 Stands UCMW)

Pickling Tank

Looper

Looper


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


: Max. 220 m/min

: Max. 2,000 m/min

: Max. 260 m/min

: 6Hi MILL (UCM)

: 6Hi MILL (UCM)

: 6Hi MILL (UCM)



Laser Beam Welder

Pickling Type4. Jet Bath


1.8 to 3.5 mm


: 700 to 1,300 mm

: Max. 28,600 kg

Material

Thickness

Width

Coil weight


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


13 14

2.3.1 Mill Type

2.3.2 Strip Shape Control Function for UCM-MILL

2.3 Copper rolling


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


- 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


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


- 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


- Product : Stainless Steel : 0.1mm 1,100mm

- Completion : 2006

Features

- Customer : Mitsubishi Electric Metecs Co., Ltd., Japan

- Mill Type : CR-MILL


- 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

cold rolling · pdf filemill conﬁguration for high strength steel (for reference) no.1 no.2...

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