Hot Rolling Mill Plate Plant

Manufacturer: DAVY, TMEIC, TOSHIBA, MITSUBISHI, SMS

Type: 4-Hi Rev.

Built: 1997 , Revamped & Installed: 2008, 2011 , Stopped in 7-2017

Revamped cost of USD 151.0 Mill. from 2008 up to 2011

Finishing mill equipped with CVC Roll plus Technology System

Finishing mill – new hydraulic adjustment to increase rolling force to 90 MN

Roughing & Finishing mills: Technology Control System (Level 1)

Process Models (Level 2) for pass schedule calculation, profile & flatness

control (PFC), Pacing system & Material tracking

Revamped by SMS in 2011

Roughing mill: Slipper-type Spindles

Product capacity: 2,000,000 ton/year

Mill capacity: 30 Plates/h

Entry Material: Slab - T130~300mm x W1,200~2,200mm x L2,350~4,000mm

Final Product: Plate - T5~180mm x W1,200~4,100mm x L max. 25 meter.

Application: Shipbuilding plate & Pipe production

Power supply: Approx. 120 000 MW

Requested area: approx. 75 000 m2

Scope of supply:

1.Descaler

Mfc.: Davy McKee Built: 1997 Type: Hi-pressure spray Size: 7835 x 5890 mm – L x W

Flow rate: 4550 L/min. Pressure: 228 bar Head no.: 2 ea upper & 2 ea down

Distance between Nozzle and slab: 140 mm

2. Roughing Mill

Mfc.: Davy McKee Type: 4-Hi Reversing Built:1997 Stopped: 2017

Pressing force: max. 9000 T

Qty. 2 Main motors changed to AC 8000 kW each, 45-110 RPM in 2011 Mfc.: TMEIC

Three phase synchronous motor 12 Poles Type: SSCR-CHPCM-DM Rated voltage: 3100 V

Inverter Voltage: 3100 V Frequency: 4.5 – 11.0 Hz

Work roll: Dia. 1,120 x 4,300 mm L x 8882 mm (TL) Weight: 48 T

Back up roll: Dia. 2,150 x 4,300 mm L x 9560 mm (TL) Weight: 160 T

3. Finishing Mill

Mfc.: Davy McKee Type: 4-Hi Reversing Built: 1997 Stopped: 2017

Pressing force: max. 9000 T Work roll shifting in 2009 Mfc.: SMS

Qty. 2 New main motor AC 8000 kW each, 45-110 RPM in 2008 Mfc.: TMEIC

Three phase synchronous motor 12 Poles Type: SSCR-CHPCM-DM Rated voltage: 3100 V

Inverter Voltage: 3100 V Frequency: 4.5 – 11.0 Hz

Work roll: Dia. 1,120 x 4,300 mm L x 8970 mm (TL) Weight: 49 T

Back up roll: Dia. 2,150 x 4,300 mm L x 9560 mm (TL) Weight: 160 T

4. Hot Leveller

Mfc.:Taechang Built:2008 Type:4-Hi reversing Strip thickness: 5-50 mm Width: 4200 mm

Work roll dia. 280 x 4350 mm L 4 WR Top & 5 WR Bottom Hardness: HS 68+/-3

Hold down roll dia. 400 x 4350 mm L – 2 ea.

Back-up roll dia. 295 x 200 mm L 60 BUR Top & 75 BUR Bottom

Hardness: HS 51-54 Support roll dia. 400 x 4000 mm L - 2 ea.

Levelling Temp.: 450-900 °C Speed: max. 60 m/min.

Capacity: 3,000 T at max. size Leveller size: 50 T

5.Automatic Shape Measuring Device

Mfc.: Marktech Built: 2001 Type: Camera (7 sets) Laser type (2 sets)

Scan angle: 14.24° Scan time: 2 – 4 ms Temp.: 500 – 1100 °C

Thickness: 6 – 300 mm Width: 1200 – 3300 mm Length: 6.0 – 50.0 m

Camber measuring area: max. 300 mm

6.Automatic Shape Marking Machine

Mfc.: Marktech Built: 2007 Type: Nozzle spray No. of nozzles: 70 ea.

Size: 7.8 x 3.29 x 0.85 m – W x H x T Thickness: 6.0-130 mm

Width: 1.3 – 3.2 m Length: 3.5 – 25 m Temp.: 0 – 400 °C

7.Crop Shear

Mfc.: SMS Built: 1998 Type: Rolling down cut Hold down device: 4 EA

Cutting thickness: 6 – 40 mm Cutting width: 1200 – 4150 mm

Knife size:

Top: 170x100x4400 mm – H x T x L Bottom: 150x100x4400 mm – H x T x L

8.Double Side Shears (2)

Mfc.: SMS Built: 1998 Type: Rolling down cut Cutting thickness: 4.8-50 mm

Cutting width: 1000 – 4150 mm Thickness: 6 – 30 mm & 30 – 60 mm (2-nd one)

Feeding length: 1100 mm Cutting force: 4600 kN Pinch roll type: Single (8 EA)

Align type: Magnet shifting Capacity: 800 sheets/day

9.End Shears (2)

Mfc.: SMS Built: 1998 Type: Rolling down cut

Cutting thickness: 6 – 40 mm Cutting width: 1000 – 4150 mm

Hold down device: 4 EA Align type: Dog type shifting

10.Marking & Stamping Machine

Mfc.:Marktech Built: 2008 Dot marking: Dot spray Stamping: Marking press

Side marking: Side part paint marking Marking speed: 0 – 90 m/min.

Temperature: 15 – 300 °C Stamping marking: Air pressed stamping by pin

Plate size: 5-200 x 900-4300 x 3000-25000 mm – T x W x L

11.Thickness Measuring Machine – Y-RAY

Mfc.: IMS Thickness Radiation: Cesium 137 Measure range: 6-120 mm

Length: 2000 mm over Type: Non contact laser doppler

Width: 1200 mm over Type: Line image camera

12. Ultrasonic Test

Mfc.: NDT Built: 2008 Type: Pulse reflection Sensing thickness: 6.0-120 mm

Plate size: Width: 1200 – 4100 mm Length: 2400-25000 mm Thickness: 6-75 mm

Plate temp.: max. 100 °C Inspection velocity: 36 m/min (0.6 m/sec.)

( to be continued )

13.Roll Grinder

Mfc.: Pomini Built: 2008 Type: HD 425-2-7L (2200 x 11 000 mm)

BUR roll dia.: 2000 – 2150 mm WR roll dia.: 1020 – 1120 mm

Barrel length: BUR 4300 mm WR 4300 mm

Overall length of rolls: BUR 9560 mm WR 8554 mm

Roll weight: BUR 161 Ton WR 45 Ton

14.Roll grinders (2)

Mfc.: Davy Built: 1998 Max. roll dia.: 2500 mm Max. roll length: 10 m

Size of grinding wheel: dia. 914 x 100 mm Max. roll weight: 180 000 kg

Machine weight: 173 Ton

15. OverHead Cranes (20)

Crane No. Qty. Specification Unit weight (kg) Type Total weight kg

A1 1 47T–37.1m 156,632 TONG 156,632

A2 1 47T–37.1m 156,632 TONG 156,632

B3 1 20T–26.5m 45,980 HOOK 45,980

B5 1 300/40 T – 32.5m 300,000 HOOK 300,000

D1 1 15 T - 37.4 m 115,987 Magnet 115,987

D3,4,5 3 15 T – 37.1 m 109.874 Magnet 109,874

DG1 1 2 T – 5.25 m 2,525 HOOK 2,525

DG2 1 15 T – 18 m 13,900 HOOK 13,900

L3 1 43 T – 30.1 m 125,081 Magnet 125,081

S2,4,6,8 4 8.5/8.5 T – 30 m 71,000 Magnet 71,000

S10, 12, 14 3 8.5/8.5 T – 30 m 71,000 Magnet 71,000

SD1 1 10 T – 17.5 m 32,553 Magnet 32,553

SD2 1 10 T – 27.5 m 48,564 Magnet 48,564

Total Weight of the Line : 90,643,342 kgs.

 All technical documents and manuals available.

 rolling mill is on Foundation.