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RE BARS HOT ROLLING MILL - CAPACITY 20.000 TONS /YEAR

RE BARS HOT ROLLING MILL - CAPACITY 20.000 TON /YEAR

CAPACITY 20.000 TON /YEAR
SECOND HAND FOR ROUNDS DIAM.14 TO 25

SECTION 1
TECHNICAL DATA
1.1 ROLLING MILL PRODUCTION
The production of the rolling mill is foreseen of 20.000 Tons per years starting from
BILLET 100x100 3000 of length, in one shifts per day.
1.2 STARTING MATERIAL
- Conticast Billet 100x100 Lenght 3000
- Quality Common steel (Carbon steel) for reinforced concrete
1.3 FINISHED PRODUCTS
Round D.14 to 25
Length of Bars = 12 Meters
1.4 WORKING TIME
- Hours per each shift 12
- Shifts per day 2
- Working days per year 300
- Available hours per year 7200
- Production hours per year 3600
COMSUMPTION
The average for each Ton of finished product is foreseen be as follow:
- Starting material about 235 Kg.
- Electric power (according the sizes) about 120 Kwh
- Reheating furnace fuel about 35 Ncm
- Cooling water (make up water) about 0.2÷0,4 C.M.
1.5 ELECTRIC POWER
- Installed power about 2000 Kw
- Machines feeding tension 400 Volts
- Frequency 50 HZ
- Auxiliary AC tension 110 / 220 Volts
- Auxiliary DC tension 24 Volts

SECTION 2
SCOPE OF SUPPLY
2.1 REHEATING FURNACE AREA
2.2 ROUGHING SET
2.3 FIRST CUTTING SET FOR SQUARE
2.4 INTERMEDIATE MILL SET
2.5 INTERMEDIATE AND FINISHING MILL SET
2.6 CUT TO LENGTH SETS
2.7 TAIL BRAKE AND TWIN CHANNEL
2.8 COOLING BED AREA
2.9 COLD CUTTING AND FINISHING AREA
2.1 REHEATING FURNACE AREA
2.1.1 BILLETS CHARGING DEVICE (ITEM1)
Technical description
This system is located in the charging side of the furnace and allows to hold
And push the billets inside of the furnace.
Main Technical
- Grid capacity 45 Billet length 3 mt.
- Grid Lenght 5000 about
- Pusher stroke 1000 mm. about
- Installed power 2x20 Kw. About
Scope of supply
Complete set of drawings for the steel structure compose as follow:
- basement for hydraulic pusher steel frame for Trolley complete with wheels, run
way and fingers steel frame complete with run-way
- accessories for Charging system compose as follow :
- hydraulic pusher
- hydraulic power pack complete
2.1.2 10 Tonn. PUSHER TYPE REHEATING FURNACE (ITEM 2)
Technical description
It is a trust furnace pre-fabricated pusher type, foreseen to heat steel billets.
The charge of the billets is foreseen in one row from back of the furnace.
The billets are pulled out from the furnace side by expeller machine, the billets runs
on three Electro-melted guides in the hottest final zone and on metal guides in the
charging zone.
The furnace is divided into three zones, normalization zone, heating zone and preheating
zone.
Each zone has its own temperature control.
The furnace is heated from the side and frontal walls, trough proportional burners
that use fuel oil.
The exhaust smokes are evacuated trough to the exhaust chimney.
In the underground duct is located the Recuperator foreseen to heat the Combustion
air for energy saving.
GENERAL CHARACTERISTICS
- Charging
- Frontal with hidraulic devise
- Discharging Side with expeller machine
- Useful lenght about 12000 mm.
- Internal width about 3500 mm.
- Charging temperature Ambient
- Pre heating zone temperature 1000 °C
- Heating zone temperature 1100°C
- Normalization zone temperature 1200°C
- Nominal production (100x100x3000) 10 Ton/H
- Fuel Natural Gas
Burners
- Burners installed 7
- Burners installed on the Normalization zone 3
- Burners installed on the Heating zone 2+2
Chimney
- Base made in steel structure and lined with refractory
- Chimney made in steel structure
Air Fans
- Combustion air with ac motor
- Diluition air with ac motor
- Chimney air fan ac motor
Scope of supply
Complete set of drawings for furnace included steel carpentery.
Burners with accessories
Compete set of combustion system
Complete set of air ventilator fans for combustion air, chimney and diluition
EXPELLING MACHINE (ITEM 3)
Technical description
It is located in opposite side of the rougher and allows to adjust its position by the
translation system parallel at the furnace.
Main technical data
Arm stroke 3000 mm.
Installed power 1x5.5 Kw for arm
2x1.1 Kw for Wheel
Scope of supply
- N°01 Expeller machine composed as follow :
- Frame in steel structure
- Driven wheels with gear box
- Free wheels
- Water cooled arm
2.2 ITEM 2 ROUGHING SET WITH SERVICES (ITEM 4)
Technical description
The Rougher allow to reduce the billets coming from the furnace, with 7 (seven)
passages, to the right section to feed the mill.
Scope of supply
Roughing unit composed as follow :
- AC Electric motor with base plate and coupling, 800 Kw. of power
- Gear box ,speed reducer, foreseen for heavy duty, with shafts on roller
bearings.
- 3 Hi Pinion stand with distance between center of 320 mm, complete with entry
side coupling.
- N° 3 Cardanic Spindles with coupling boxes
- 3-Hi rolls stand D.370 , open top type, complete with :
- Upper and lower rolls adjusting system
- Chocks with roller bearings of rolls.
- Entry and exit rest bars
- Base plate
- Set of entry and exit guides
- Lubrication unit
SERVICES DOWNSTREAM AND UPSTREAM OF THE ROUGHER (ITEM 5)
Exit furnace rollers table with AC motors
Fixed rollers table with drop walls and AC motors
Extension rollers table with AC motor.
Oval rollers table with AC motor.
Oval turner device
Fixed rollers table with guides and AC motors
Extension rollers table with AC motors
Square conveying through
Scope of supply
Complete set of drawings for steel frame for roller ways
Set of rollers complete of drive motors with accessories
2.3 ITEM 3 FIRST CUTTING SET FOR OVAL AND SQUARE (ITEM 6)
Technical description
The purpose of this shear is to cut the head and the tail of the bars
Main technical data
- Max cutting capacity at 1000 °C 1600 mm²
- Max speed about 4 m/sec
Scope of supply
2.3.1 HORIZONTAL SHEAR
- Steel structure machined body
- Electric motor
- Arms with knives
- Lubrication system
2.3.2 VERTICAL SHEAR
- Steel structure machined body
- Electric motor
- Arms with knives
- Lubrication system
- Entry guides
2.4 INTERMEDIATE MILL SET N°2 : 5 STANDS (ITEM 7)
Technical description
The purpose of these machines is to reduce the square coming from the
rougher to the right sections for the finishing mill.
Main technical data
Rolls nominal diameter 300/320 mm.
Scope of supply
2.4.1 N. 01 Intermediate Horizontal 2-hi type rolls stands
Composed as follow:
- Set of cardanic spindles with coupling boxes
- N° 4 2-hi rolls stand type, with rolls on roller bearing chocks
- Rest bars at entry and exit side
- Foundation base plate for rolls stand
- Entry and exit rolled guide boxes
2.5 FINISHING MILL SET N°2 STANDS ( ITEN 8 )
Technical description
The purpose of these machines is to reduce the square coming from the
rougher to the right sections for the finishing mill.
Each stand will be single driven by DC electric motor,
Main technical data
Rolls nominal diameter 300/320 mm Barrel 600 mm.
Scope of supply
2.5.1 N. 02 Horizontal 2-hi type rolls stands
- Each one will be composed as follow:
- DC motor with base plate and coupling 150 Kw power
- Gear box – pinion stand, 2 hi with inside lubrication system
- Two universal spindles (cardan) with coupling boxes
- 2-hi rolls stand type, with rolls on roller bearing chocks
- Rest bars at entry and exit side
- Foundation base plate for rolls stand
- Entry and exit rolled guide boxes
2.5.2 N°01 Lubrication unit
2.6 COOL CUTTING SERVICES AND PACKAGING OF FINISHED BARS
Gutter with a cover to carry the laminate of the finishing cage into cooling bed.
Scope of supply
PINCH ROLL ( ITEM 9 )for laminated with rolls diameter 300 mm. horizontal,
complete with D.C. motor .
FLYING SHEAR CV.30 ( ITEM 10 )for cutting at measure the moving bar, complete
with D.C.
Motor and deflection device of laminate in entrance pneumatic control.
- Max. cutting section 800 mm².
- Max. speed 8 m/sec.
- Min. cutting temperature 900 °C
2.7 APRON ROLLER TABLE ( ITEM 11) (Supply By Client)
2.8 COOLING BED AREA (Supply By Client)
Technical description
These machines allow to cool the same in order to have straight bar at the exit of
cooling bed and to feed the cold shear.
Main technical data
- Cooling bed dimensions 14x5 m
- Length of rollers table 15 m
2.8.1 N° 01 Cooling bed ( ITEM 12) (Supply By Client)
Walking beam type, complete with :
- Dive unit with shafting and DC motor
- Fixed frame with rakes and cast iron grids
- Mobile frame with rakes
- Aligning rollers with ac motors
- Layers transfer device.
2.8.2 N° 01 Exit cooling bed roller table (Supply By Client)
Rollers table complete with AC motors.
2.9 ITEM 11 - 12 COLD CUTTING AND FINISHING AREA (Supply By Client)
Technical description
The aim of these machines is to cut to commercial lenght the cold bars and to make
the bundles.
Main technical data
- Length of bars to 6 Mt.
- Weight of bundles 2500 KG.
Scope of supply
2.9.1 N°01 Cold shear ‘CAIMANO’ ( ITEM 13)
With blades LENGHT 500 mm. and AC motor and pulley.
2.9.2 N°01 After cold shear rollers table ( ITEM 14) (Supply By Client)
complete with :
- AC motors
- End stopper
2.9.3 N° 01 Set of collection poket (Supply By Client)
2.10 ELECTRIC EQUIPMENTS ( ITEM 15)
Technical description
The purpose of these equipments is to feed the power and to drive the AC and DC
electric motors and To control the working cycle and automation of the rolling mill.
Main technical data
Voltage of AC motor of Rougher 500 V.
Voltage of AC motor and DC motor 400 V.
Frequency 50 Hz.
Auxiliary voltage AC 110 / 220 V.
DC 24 V.
Installed power About 2000 KW
N° 01 Set of low voltage power center
foreseen to feed the power to the panels Of the mill
N° 01 AC motor, slip ring type, control panel for rougher
N° 01 AC motors control panel for rougher services machines
N° 02 DC motors, control panels for two motors each thyristors type, for stands.
N° 01 DC motors control panel thristor type for shears , pinch roll and cooling bed.
N° 01 AC motors, control panel for auxiliary machines (lubrication units, rollers table
for cooling bed and finishing area)
N° 01 Control panel for automation
Material on field as follow :
Set of photocells Infrared for automation
Substation And Electrical Transformers

Ref. 513163

LARGE DIAMETER SEAMLESS ALLOY & CARBON STEEL PIPE MANUFACTURER

LARGE DIAMETER SEAMLESS ALLOY & CARBON STEEL PIPE MANUFACTURER

Introduction
Main Products
Production Process Flowcharts
Main Facilities List
Facilities
Expanding Process
Chemical Composition
Available Size Range
Specification For Seamless Alloy & Carbon – Steel Pipe According to ASTM
Heat Treatment Requirement
Corresponding Standards
Test Facility.

Main Facilities List

1 Expanding M/C 600 Ton x 12 m 2 EA
2 Mandrel  Size 18” – 34” 1 SET
3 Furnace W4.5 x L14 m 1 EA
4 Heating Coil H/F Size 18”-34” (900 L x 900 KW) 1 SET
5 Reforming Press M/C 2000 Ton 1 EA
6 Bend Sawing M/C Max Ø  1000 mm x 12 m 1 EA
7 End Facing M/C Max Ø 1000 mm  x 12 1 EA
8 Inside Grinding M/C 12 m 2 EA
9 Outside Grinding M/C 12 m 1 EA
10 Hydrostatic Test M/C Ø 1000 mm x 12 m 1 EA
11 Ultrasonic Test M/C Ø 1000 mm x 12 m 1 EA
12  Measurement M/C Ø 2032 mm x 12.3 m 1 EA

Ref.  513158

SHIN NIPPON STEEL 6000 TONS SCREW PRESS MACHINE

Screw Press Machine 6000 Tons
Manufacturer : Shin Nippon Steel
Built : 1974
Commodity : Linear Screw Press Machine 6000 Tons Capacity
Screw Diameter : 700 mm
Maximum Pressure : 6000 Tons
Flywheel Energy : Maximum 70 m – ton

  Width Maximum : 1200 mm
Metal die size Length Maximum ; 1800 mm
  Height Maximum : 970mm , Minimum 600 mm
Stroke : Maximum 1200 mm, Minimum 800 mm
Down Speed ; 0~0.43 m / second
Number of Stroke : 4 Times / Minute
Number of Linear Motor : 6 Units x 475 KVA

Consisted Equipment : Press Machine Mainbody, Cooling equipment, oil remover, oil supply unit, balancer, overload protector knockout equipment, brake, electricity related equipments.
 

Ref.  513160