1250mm aluminum and steel coil coating line

TECHNICAL SPECIFICATIONS FOR THE

COIL COATING LINES T E E L A N D A L U M I N I U M C O I L C O A T I N G L I N E

INTRODUCTION：This line will be able to process both cold rolled steel coils and galvanized steel and cold rolled aluminium coils.

LEAVING DATA – GENERAL CONDITIONS

The line has to can process coils according to the next specifications:

INLET SECTION.Specifications of the materials which the line will work in the inlet section with.

MATERIAL ALUMINIUM AND ALUMINIUM ALLOYS

COLD ROLLED OR GALVANIZED STEEL

YIELD STRENTGH

Max. 60 daN/mm2 Max. 40 daN/mm2

WIDTH 1300 max – 600 min 1300 max – 600 min

THICKNESS 1.3 max - 0,2 min 0,8 max - 0,2 min

Specifications of the coils in the inlet section:

FEATURE VALUE

MAXIMUM WEIGHT 10.000 kg

INSIDE DIAMETER 405min?/610max

MAXIMUM OUTSIDE DIAMETER

1500 mm

MINIMUM OUTSIDE DIAMETER

700 mm

SPECIFICATIONS FOR COIL COATING LINE

The minimum inside diameter influence regarding the features of the conveyor car until being able to make the load automatically.

1.1.1. COILER OUTLET SECTION

FEATURE VALUE

MAXIMUM WEIGHT 10.000 kg

MAXIMUM WIDTH 1300 mm

INSIDE DIAMETER OF DECOILED

405mm minimum

610 mm maximum

ALLOWANCE TO COIL WIDTH

1 mm

LATERAL OVERLAPPING +/-0.5mm

MAXIMUM OUTSIDE DIAMETER

1500 mm

MINIMUM OUTSIDE DIAMETER

700 mm

1.1.2. LINE BASIC DATA

SPEEDS:

PARAMETER CORRECTED DATUM BY BSC

MAXIMUM SPEED IN THE INLET AND OUTLET SECTION

60 m/min

MAXIMUM SPEED WORKING WITH STEEL PLATE OF 0.6mm of Thickness

and 1600 mm of Width

40 m/min

MAXIMUM SPEED OF THE LINE WORKING WITH ALUMINIUM SHEET

of 0.3mm of Thickness and 1500 mm of Width

40m/min

ACCUMULATOR CAPACITY

TYPE OF ACCUMULATOR

DATUM CORRECTED BY BSC

CAPACITY OF INLET ACCUMULATOR WORKING AT 40 m/min

180 s / (120metros)

CAPACITY OF OUTLET ACCUMULATOR WORKING AT 40

180 s / (120metros)


m/min

2. DESCRIPTION OF THE PROCESS BY MACHINES.

2.At this point, we will basically explain the functions of each one of the units which constitute the line, following the numerical order of the enclosed Layout, and the most relevant technical, mechanical and electrical features.

2.1. ITEMS No.1 AND No. 3: UNCOILERS

2.1.1. Description

These machines have as a task to withstand the coils and generate the stress necessary during the uncoiling process of this.

Two parts are distinguished. The first one is the load conveyor car which carries the coil to the mandrel and the second one is the uncoiler itself and the expansive mandrel.

2.1.2. Load conveyor car

The function of this part of the uncoiler is to withstand the coils in the load area and place them in the uncoiler mandrel.

It must have the necessary measures in order to execute the load of the biggest and smallest coils, according to the general specifications of the section 1 of this annex.

PARAMETERDATUM CORRECTED BY

BSC

LIFT MOVEMENT DRIVE HYDRAULIC

HYDRAULIC STATION CAPACITY

4Kw AND OIL FLOW (25 litres/minute)

STROKE LENGTH OF THE PLATFORMS IN ELEVATION

580(MM)

CONVEYING MOVEMENT DRIVE

MOTOR

MAXIMUM WEIGTH OF COILS 10,000 Kg


STROKE LENGTH OF THE PLATFORMS IN CONVEYING

2000mm

For the cross movements, the conveyor cars will have wheels with bearings and will be set up on guides.

This conveyor car will be placed into a pit under the floor according to Layout and will have to incorporate a metal slided shell as a curtain in order to cover the pit either in the advance or the runback of the conveyor car. The lubrication of all the mobile parts of the car will be centralized, manual or automatic, but centralized.

The conveyor cars include a measurement system which allows to place the coil in the center of the line (line axle). The supplier has to explain this system and how it works.

The expansive mandrel will be supported by an axle and some hardened and forged steel ramps in order to support the 10 T. of weight and avoid a premature fretting of the ramps since they are under fretting.

2.1.3. UNCOILER

The function of the uncoiler will be withstanding the coils and generating the stress necessary for the uncoiling process.

Board of basic features:

PARAMETERDATUM CORRECTED

BY BSC

TYPE OF UNCOILERTYPE MOBILE BASIS WITH

CORRECTION AND CANTILEVER MANDREL.

LOAD CAPACITY 10.000 KG

TYPE OF MOTOR ALTERNATING CURRENT

POWER OF THE MOTORTHE MOTOR FOR HYDRAULIC

STATION :7.5Kw

TYPE OF TRANSFER CASE RATIO: 1:15

BRAKING SYSTEMTHE CONVEYING MOTOR

WITH BRAKE

MAXIMUM BRAKING STRESS (Newtons)

780 N – 8000 N

MANDREL LENGTH 1800mm

BRAKING SYSTEM MAGNETIC BRAKING.


MINIMUM MANDREL DIAMETER (SHRUNK)

480mm

MAXIMUM MANDREL DIAMETER (EXPANDED)

625mm

EDGE POSITION CORRECTION IN UNCOILER

HYDRAULIC SERVO SYSTEM

AUTOMATIC CORRECTION STROKE LENGTH

+/- 150 mm

CORRECTION PRECISION ±0.5mm

There are two different parts in the uncoiler: The fixed part will be placed on the foundations and the mobile part will must slide on the fixed one operated by a mechanical system (hydraulic actuator or motor) in order to can make the corrections of the strip uncoiling.

The fixed basis of the uncoiler will be made of strong and resistant steel in order to can withstand the maximum weight of the coil ( 10 Tn) without flexions or vibrations.

The mobile basis will have guides made of a unfretting material and precise enough to make a continuous adjustment in a range of +/- 150mm

Both machines will incorporate a pneumatic or hydraulic actuator system with a roller at the end to avoid the uncoiling of the coil in the line stops.

The uncoiler will have to driven manually in order to load the coil.

2.2 PINCH ROLL

2.2.1 General Description

The task of this units is making easier the uncoiling of the coils and helping in the leading of the plate to the coil joint section. While the machine is normally working they deflect the plate and fasten the height of the line.

It consists of two rollers, one is upper and mobile and the other one is lower and fixed. The roller is set up on a strong and sturdy structure operated by two pneumatic actuators, one in each side of the machine. This way, the two rollers make a clamp which retains the plate.

At the same time, the upper roller is motorized and a worker can operate this motor in order to help the leading of the plate to the coil joint section.

The unit incorporates a desk in the lower area driven by a hydraulic cylinder spinning around a point of the structure. The function of this desk is to make


easier the plate feed to the rollers from the coil. The angle of this desk has to can be manually modified from the PINCH ROLL unit.

2.2.2 Technical features

FEATUREDATUM CORRECTED

BY BSC

SUPPORTING STRUCTURESTRONG AND STURDY THROUGH MACHINING AND WELDING PLATES

UPPER ROLLER: DIAMETER Ø200mm

UPPER ROLLER: MATERIAL20# STEEL ,45# STEEL,RUBBER

UPPER ROLLER: HARDNESS 85-90 (SHORES A)

LOWER ROLLER: DIAMETER Ø 400mm

LOWER ROLLER: MATERIAL20# STEEL ,45# STEEL,RUBBER

LOWER ROLLER: HARDNESS 85-90 (SHORES A)

TYPE OF MOTORALTERNATING CURRENT

(AC MOTOR)

POWER OF THE ENGINEMOTOR: 2.2Kw

TRANSFER CASE: RATIO 1:120

UPPER CYLINDER GUIDE IT MUST BE SMOOTH AND

PRECISE

2.3. TURNING UNIT

2.3.1. General Description

The function of this roller is to fix and maintain the height of the plate in inlet section of the coils.

Technical Features.



BY BSC

SUPPORTING STRUCTURE

ROLLER DIAMETER: 400mm

ROLLER MATERIAL:20# STEEL ,45# STEEL,RUBBER

ROLLER: COATING: RUBBER

HARDNESS: COATING: 85-90 (SHORES A)

ROLLER FIXATIONTHROUGH BALL BEARINGS

2.4. CUTTING MACHINE


This unit works like a cutting machine for the cutting of the beginning and end of the coils, in order to leave them with an uniform edge for the later joint o these ones.

It will have two razors; one upper and fixed and the another lower and mobile which will have to be easily interchangeables. Hardness: HRC 60-65 / Material: Cr12

2.5. JOINING UNIT


The function of this unit will be making a cutting of the ending plate of a coil and the beginning of the next one so that we can put crossly a string maintaining joined and supporting tension stress in the different areas of the line.

2.5.2. Technical features

The unit will be made of steel and the structures will be strong enough to work with steel plates of a thickness of 0.8 mm without flexions or vibrations.


The actuator of the unit will be hydraulic through an cylinder placed in the inside part which provides strength enough.

Specify cylinder diameter. Ø150mm

The machine have a die which allows to make a double cutting in the thickest plate, in just one time.

2.6. PLANISH UNIT


The function of this unit is to planish the rims produced by the joining unit and help to restore the damaged or chipped borders.

It has two rollers, a upper one (mobile) contacting on one lower (fixed) with the strength transmitted by two hydraulic bottles.

It will just act when the joining passing by.

As all the rest of the rollers of the line, they have to be set up on ball bearings unfretting.

2.6.2. Technical Features


BY BSC


UPPER ROLLER DIAMETER Ø200mm

UPPER ROLLER MATERIAL STEEL

UPPER ROLLER COATING Cr

UPPER ROLLER COATING HARDNESS

HRC>45

LOWER ROLLER DIAMETER Ø400mm

LOWER ROLLER MATERIAL STEEL

LOWER ROLLER COATING Cr

LOWER ROLLER COATING HARDNESS

HRC>45

ACTUATOR TWO AIR CYLINDER


BOTTLES

Ø160mm

UPPER ROLLER GUIDE

SIT MUST BE SMOOTH AND PRECISE THROUGH STRONG AND STURDY GUIDES OR COLUMN

2.7. TENSION MACHINE.

2.7.1. General description.

There are 6 tension machines distributed along the line. The function of these tension machines is maintaining the tension in the plate between two of them or between the uncoilers and the first one or between the decoiler and the last tension machine.

An alignment adjustment will have to be included.

Passing by them, the strip makes an “S” whose aim is obtaining the maximum contact with the roller in order to tensioning without having slidings in the plate. The main parts of this machine are.

o Two rollers

o One engine (one engine can guarantee the synchronized movement for both top roller and down roller, so that it can avoid to damage on the plate surface.)

o One supporting structure.

o One clamp roller for the fixing of the plate.

The rollers will have engaged a engine with a transfer case and have to can adjust independently or as a whole both the line speed and the tension stress in each looping.

All the rollers of the line will be set up on ball bearings.

Specify the features of the transfer cases.

From unwinder to 1# tension machine: open-loop tension control system, no tension sensor

From 1# tension machine to 2# tension machine: close-loop tension control system, using tension sensor made by Japan or Germany






From 6# tension machine to winder: close-loop electric current control system, no tension sensor.

2.7.2. Technical features.


BY BSC


ROLLER DIAMETER No. 1 Ø 600mm

ROLLER MATERIAL No.120# steel ,45# steel,RUBBER

ROLLER COATING No. 1 RUBBER

ROLLER COATING HARDNESS No. 1

85-90 (SHORES A)

ROLLER DIAMETER No. 2 Ø 600mm

ROLLER MATERIAL No.220# steel ,45# steel,RUBBER

ROLLER COATING No. 2 RUBBER

ROLLER COATING HARDNESS No. 2

85-90 (SHORES A)

POWER ENGINE 11Kw

CLAMP ROLLER DIAMETER Ø 200mm


CLAMP ROLLER MATERIAL20# steel ,45# steel,RUBBER

CLAMP ROLLER COATING RUBBER

CLAMP ROLLER COATING HARDNESS

85-90 (SHORES A)

CLAMP ROLLER DRIVING CYLINDER

PNEUMATIC

CYLINDER DIAMETER Ø 160mm

UNITPOWER OF THE

ENGINESOTHER FEATURES

TENSION UNIT No.1 AC Motor 11KwTRANSFER CASE

RATIO: 1:40


RATIO: 1:40


RATIO: 1:40


RATIO: 1:40


RATIO: 1:40


RATIO: 1:40

2.8. ENTRY LOOPING TOWER & EXIT LOOPING TOWER


The function of this machine is accumulating the plate amount enough to guarantee a constant line speed in the process during the stops in the inlet and outlet of the line.

These machines will have such a size that working at 40 m/min we obtain a backup time of 180 seconds.


Both looping towers have a mobile platform which can be retract or expand (according to needs) in order to accumulate or let free plate. This platform will must move on a strong and precise guides which will include bearings.

In the upper part of the tower, there will be a platform with handrails made of tubes and, on this platform , the engines, brakes, transfer cases and transmitters which make go up and down the mobile part of the looping tower will place.

The looping tower will be synchronized with the inlet and outlet section according to needs.

All the strings used for the movement transmission must have tension units which guarantee a correct gear assembly with the pinions.


FEATUREDATUM

CORRECTED BY BSC

SUPPORTING STRUCTURE BASIS

STRONG AND STURDY THROUGH MACHINING,

WELDING AND SCREWED PLATES

USEFUL STROKE LENGTH OF SLIDING MOBILE CAR

10m

TOTAL STROKE LENGTH BETWEEN BUMPS

11m

LOOPINGS NUMBER 12

ROLLER NUMBER OF THE FIXED PART

7

ROLLER DIAMETER OF THE FIXED PART

Ø 400mm

ROLLER MATERIAL OF THE FIXED PART

20# STEEL ,45# STEEL,RUBBER

ROLLER COATING OF THE FIXED PART

RUBBER

ROLLER COATING HARDNESS OF THE FIXED PART

85-90 (SHORES A)


TYPE OF STRINGS USED IN THE TRANSMISSION

24A

ROLLER NUMBER OF THE MOBILE PART

6

ROLLER DIAMETER OF THE MOBILE PART

Ø 400mm

ROLLER MATERIAL OF THE MOBILE PART

20# STEEL ,45# STEEL,RUBBER

ROLLER COATING OF THE MOBILE PART

RUBBER

ROLLER COATING HARDNESS OF THE MOBILE PART

85-90 (SHORES A)

LENGTH OF ACCUMULATED PLATE

120m

POWER OF ENGINE OF THE ENTRY LOOPING TOWER

15Kw

POWER OF ENGINE OF THE EXIT LOOPING TOWER

15Kw

TENSION OF REGULAR PLATE IN ENTRY LOOPING TOWER

(NEWTONS)

1000N.m-5000N.m

THE ACCESS LADDER TO THE UPPER PART MUST BE INCLUDED

INCLUDED

THE DOWN LADDER TO THE PIT MUST BE INCLUDED

INCLUDED

2.9. PRETREATEMENT ITEMS


The function of this process is cleaning the strip and preparing it with different products for the later coating process. It deals with a process of wetting cleaning, with fluid discharge through spray guns


It has a strong and sturdy basis structure measure to support all the rollers and which during the process it remains steady.

A close room with inside divisions in which 6 areas

Degrease Phase 1

Degrease Phase 2

Rinse

Neutralization

Rinse

Washing with demineralized water

Each one of the areas will work as a independent room to avoid contamination between them and have a piping system in the inside of the room which will incorporate a spray nozzle matrix.

These nozzles will be responsible of spraying water at high pressure on the plate in order to sweep the dirt to the lower part.

The dissolving basins will be placed at the bottom (and on the floor level) and will collect all the fluid which drains from the plate in each one of the different phases. Each of the cotas of the basins will have a spacing in order to overflow in the upper part to the next basin, from where the fluid will be collected to the discharge pump. See picture No. 20.

The tunnel will have rollers in the upper and lower part for the directional change of the strip. These rollers will be set up on ball bearings which will be installed in the outside part of the tunnel in order to avoid the contact with clean fluids. At the same time, they will have a leak system which avoid the fluid goes out to the outside of the tunnel.

Each of the cotas of the basins will have a spacing in order to overflow in the upper part to the next basin, from where the fluid will be collected to the discharge pump. See picture No. 20.

The tunnel will be covered in the outside part by a easily dismountable bonnet which will incorporate pipes to a suction turbine for the extraction of the steam.

The tunnel will incorporate one or more side doors in each access and maintenance area.

These doors hermetically close to prevent the exit of the fluids of coil cleaning.

2.9.2. Technical Features.

FEATURE DATUM


CORRECTED BY BSC

NUMBER OF FIXED ROLLERS 7

FIXED ROLLERS DIAMETER Ø 200mm

FIXED ROLLERS COATING MATERIAL

RUBBER

FIXED ROLLERS COATING THICKNESS

15mm

FIXED ROLLERS COATING HARDNESS

85-90 (SHORES A)

NUMBER OF DRAINING ROLLERS 7

DRAINING ROLLERS DIAMETER Ø 200mm

DRAINING ROLLERS COATING MATERIAL

RUBBER

DRAINING ROLLERS COATING THICKNESS

15mm

DRAINING ROLLERS COATING HARDNESS

60-65 (SHORES A)

FEATUREDATUM

CORRECTED BY BSC

PIPE DIAMETER Ø 200mm, Ø 400mm

PIPE AND BONNET MATERIAL 304

STEEL THICKNESS 1.5mm

TURBINE STEAM EXTRACTION CAPACITY (m3/h)

8000m³/h

POWER OF THE TURBINE ENGINE ( Kw)

4Kw

Features board for the Degrease STAGE 1

FEATUREDATUM

CORRECTED BY BSC

PRODUCT BASIN VOLUME 2000 LITERS

MEASURES: WIDTH X LENGTH X HEIGTH

1500mm*1700mm*860mm

CONSTRUCTION MATERIAL 304


MATERIAL THICKNESS 2.5mm

DISCHARGE PUMP FLOW 500(LITRES/MINUTE)

DISCHARGE PUMP POWER 5.5Kw

PLATE LENGTH IN THE PRETREATMENT

4.5m

PUMP OPERATING PRESSURE IN THE PUMP EXIT

PRESSURE CONTROLER

4-5 BARS

NUMBER OF SPRAYING NOZZLES IN THIS AREA

120 UNITS

INDICATE FILTER SIFT 20 UNITS

OPERATOR TEMPERATURE FOR THIS AREA

50 ºC -80 ºC

TYPE OF HEATING BY COIL

Features board for the Degrease STAGE 2

FEATUREDATUM

CORRECTED BY BSC



1500mm*1700mm*860mm






4.5m


PRESSURE CONTROLER

4-5 BARS

NUMBER OF SPRAYING NOZZLES 120 UNITS


IN THIS AREA

INDICATE FILTER SIFT 20


50 ºC -80 ºC


Features board for the Rinse STAGE 3

FEATUREDATUM

CORRECTED BY BSC



1100mm*1700mm*860mm






2.3m


PRESSURE CONTROLER

4-5 BARS


60 UNITS



50 ºC -80 ºC



Features board for the Neutralization STAGE 4

FEATUREDATUM

CORRECTED BY BSC



1100mm*1700mm*860mm






2.3m


PRESSURE CONTROLER

4-5 BARS


60 UNITS



25 ºC -35 ºC


Features board for the Rinse STAGE 5

FEATUREDATUM

CORRECTED BY BSC




1100mm*1700mm*860mm






2.3m


PRESSURE CONTROLER

4-5 BARS


60 UNITS



50 ºC -70 ºC


Features board for demineralised water

FEATUREDATUM

CORRECTED BY BSC



1100mm*1700mm*860mm







2.3m


PRESSURE CONTROLER

4-5 BARS


60 UNITS



40ºC Tª MAXIMUM

TYPE OF HEATING

2.10. KNIFE GATE BLOWER


The function of the unit is blowwing the plate before applying the chromaking coating in both sides in the pre-treatment tunnel exit.

It is very important that, in this phase, all the air sprayed on the plate have been passed through filters to avoid to leave crud on the plate surface


FEATUREDATUM

CORRECTED BY BSC

CONSTUCTION MATERIAL 304

AIR FLOW IN m3/h 8000 m3/h

THE MOTOR POWER 4Kw

KNFE GATE(mm) 4mm


2.11. CHROMAKING COATING MACHINE


The function of this machine is applying a thin coating film of a trivalent Chrome compound on the plate surface in order to protect it against the corrosion.

The chromaking or first chemical must be applied with rollers in both sides. It has to work in a similar way to a both-side coating paint head with micrometric regulation of proximity rollers and re-flow the surplus chemical product.

It must have a product collector system in order to can make a closed and filtered circuit.

The product application product will be through two rollers in both sides of the plate. To the rollers in contact to the plate, we will name applicator roller and to the rollers taking the product, catching roller.

Each roller will be driven by an independent engine synchronized with the line speed. When the strip joining passes by, they will be able to decouple.


FEATUREDATUM

CORRECTED BY BSC

APPLICATOR ROLLER DIAMETER ø250mm

APPLICATOR ROLLER MATERIAL20# STEEL ,45# STEEL,RUBBER

APPLICATOR ROLLER COATING RUBBER

APPLICATOR ROLLER COATING HARDNESS

75-80 (SHORES A)

APPLICATOR ROLLER COATING THICKNESS

20mm

CATCHING ROLLER DIAMETER ø250mm

CATCHING ROLLER MATERIAL 20# STEEL ,45# STEEL

CATCHING ROLLER COATING Cr


CATCHING ROLLER COATING HARDNESS

HRC≥45

CATCHING ROLLER COATING THICKNESS

0.1mm

2.12 HOT AIR DRYING UNIT


The function of the unit is drying the plate in the exit of the chromaking coating unit for the later application of the first coating.

It is very important that, in this phase, all the air sprayed on the plate have been passed through filters to avoid to leave crud on the plate surface.

There will be access doors for the maintenance works.

Specify how the air is heated. Origin of the heating.

(1) the burner heat the heat exchanger, the heat is exchanged between recycle fan and heat exchanger,the plate is dried by hot wind.

(2) the temperature of wind: 50℃-80℃

(3) the heat exchanger is indirect, so that it avoid to dirt plate when natural gas do not burn enough.

2.12.2 Technical Features

FEATUREDATUM

CORRECTED BY BSC

CONSTUCTION MATERIAL A3,304

TYPE OF HEATING INDIRECT

AIR FLOW IN m3/h 8000 m3/h

HEATING CAPACITY 280,000kal/h

TURBINE CAPACITY 4Kw


2.13. TOP COATING MACHINE & BACK COATING MACHINE


The function of this machine will be the continuous application of solved-base paints in both sides of the plate.

The machine have the next well-distinguished parts:

o Base Structure

o Group of rollers to paint the side A or principal:

o Catching roller

o Meter roller

o Applicator roller

o Group of rollers to paint the B side or posterior.

o Catching roller

o Applicator roller

Besides, there will have to include the rest of the rollers and devices which let decouple the head when coil joinings pass by in order not to damage the cylinders.

All the movements among the rollers will be made by means of linear guides and will be strong and sturdy.

For the group of rollers of the side A, some guides on the rest of the group of rollers are set up are included. By means of the hydraulic cylinder, the whole painting head must have couple or decouple in order not to contact with the coil joining when passing by the coater room.

The rest of the cylinders will relatively move among them through guides with great precision.

In order to make the proximity adjustments among the different cylinders, the system of micrometric regulation handwheels as the indicated in the previous point

The rollers will be set up on easily dismountable ball bearings in order to make easier the maintenance works.


FEATURE DATUM CORRECTED


BY BSC

DIAMETER OF ROLLER No. 1 Ø 250mm

MATERIAL OF ROLLER No. 120# STEEL ,45# STEEL,RUBBER

COATING OF ROLLER No. 1 RUBBER

COATING HARDNESS ROLLER No. 1

55-70(SHORES A)

COATING THICKNESS ROLLER No. 1

20mm

DIAMETER OF ROLLER No. 2-1 Ø 300mm

MATERIAL OF ROLLER No. 2-1 20# STEEL ,45# STEEL

COATING OF ROLLER No. 2-1 Cr

COATING HARDNESS ROLLER No. 2-1

HRC≥45

COATING THICKNESS ROLLER No. 2-1

0.1mm

DIAMETER OF ROLLER No. 2-2 Ø 250mm

MATERIAL OF ROLLER No. 2-2 20# STEEL ,45# STEEL

COATING OF ROLLER No. 2-2 Cr

COATING HARDNESS ROLLER No. 2-2

HRC≥45

COATING THICKNESS ROLLER No. 2-2

0.1mm


MATERIAL OF ROLLER No.3 20# STEEL ,45# STEEL

COATING OF ROLLER No. 3 Cr


HRC≥45


0.1mm


MATERIAL OF ROLLER No. 4 20# STEEL ,45# STEEL

COATING OF ROLLER No. 4 Cr

COATING HARDNESS ROLLER No. HRC≥45


4


0.1mm





85-90(SHORES A)


15mm





85-90(SHORES A)


15mm

2.13.3. SUPPORT OF ENGINES.

Next to the coater room, it is necessary to place a little structure supporting the reducer engines which make spin the cylinders.

The 5 engines, 3 for the rollers of the side A and 2 for the rollers of the side B, will transmit the rotation through some universal and telescopics axles Cardan.

Technical data of the air removal hoods for the coating rooms:


BY BSC

MATERIAL OF THE HOOD CONSTRUCTION

A3

HOOD TUBE DIAMETER 2500mm*2000mm


HOOD TUBE MATERIAL A3

HOOD TUBE THICKNESS 2mm

REMOVAL TUBE DIAMETER ø400mm

REMOVAL TUBE MATERIAL A3

REMOVAL TUBE THICKNESS 2mm

2.14. COATING HEAD BY ONE SIDE.


This machine is similar to the previous one but it only coats the side “A”. It has all the previously detailed elements for the coating of the side A, that is, 3 rollers.

It will have to can couple in order to coat when necessary as well as can automatically decouple when the coil joining passing by.


It will be the same features than the previous room regarding the machine structure, measurements and materials used in the rollers, control, air removal hood, etc.

2.15. PRIMER OVEN AND TOP OVEN


The objective of this ovens is the correct drying and curing of the coating paint given to the coil (by one or two sides) with circulating hot air.


In order to can correctly dry both sides of the plate, the oven must have a catenary equipment, that is, the plate must to pass through the oven without touching anything.

The catenary equipment of the oven will be placed between the base roller of the coating room and the exit of the plate cooling tunnel. Between these two points, the plate cannot touch anything.

The oven of Primer and top coating will have a indirect flame, in order not to contaminate with the combustion smoke the coating paint.



BY BSC

TOTAL MEASURE PRIMER OVEN25000mm*2100mm*2270mm(L*W*H)

TOTAL MEASURE TOP OVEN33500mm*2100mm*2270mm(L*W*H)

OUTSIDE MEASURES 2200mm*2270mm

NUMBER OF DRAWERS AND MEASURES OF THE DRAWERS

PRIMER: 3

TOP: 3

NUMBER OF ZONES OF TEMPERATURE

PRIMER OVEN: 3

TOP OVEN: 4

LENGTH ZONE 1 8250mm


LENGTH ZONE 3PRIMER: 8250mm

TOP: 8500mm


The oven will have two plenum chambers, one upper and the other lower which will distribute the air to the both sides of the strip for the cured of the coating.

The air enters from a combustion chamber impelled by a turbine to the plenums which project it on the plate. A portion of the air re-circulate


towards the burner again to be heated back and enter again in the oven at the consigned temperature.

Other portion of the air exits through some ports in the upper part of the oven towards a conducting leading to the scrubber since the cured of the coating let free the solvents which makes liquid. Those solvents must be burned.

Solvents analyser will be placed by customer.

The air impeller turbine engine will be of alternating current and will be controlled by a converter in order to regulate the air amount entering in each zone of the oven.

FEATURES OF THE PLENUMS


BY BSC

LENGHT OF THE PLENUMSPRIMER OVEN: 7300mm*6

TOP OVEN: 7300mm*8

MEASURES WIDTH x HEIGHT 1350mm*260mm

TYPE OF STEEL 304

STEEL THICKNESS 2mm

NUMBER OF TEMPERATURE ZONES

PRIMER OVEN: 3

TOP OVEN: 4

All the ducts leading from the burner to the oven and from the oven to the burner as well as the scrubber must be totally isolated (heat-insulated).

FEATURES OF THE OVEN CONDUCTS


BY BSC

INNER MEASURES AND DIAMETER

Ø800mm,640mm*520mm

TYPE OF STEEL OF THE INNER CONDUCT

304


STEEL THICKNESS OF THE INNER CONDUCT

2mm

TYPE OF ISOLATION ALSiO3

ISOLATION THICKNESS 80mm

All the air extracted of the oven with solvents will be led to a duct which will be installed in parallel to the ovens, stuck to the industrial premises wall and this duct will lead to the gases scrubber (this one will be included by customer).

FEATURE OF THE CONDUCT LEADING TO SCRUBBER


BY BSC

INNER MEASURES AND DIAMETER

Ø500mm

TYPE OF STEEL OF THE INNER CONDUCT

304

STEEL THICKNESS OF THE INNER CONDUCT

1.5mm

TYPE OF ISOLATION ALSiO3

ISOLATION THICKNESS 80mm

Each module will have an air re-circulating turbine of variable rotation big enough to obtain a good air boost towards the plenums.

FEATURES OF THE BURNER TURBINE


BY BSC

POWER OF THE ENGINES 650 W

FLOW m3/HOUR 2800 rpm

TYPE OF ENGINE ALTERNATING CURRENT

All the burners of the ovens must belong to European trademarks.

Type of fuel: PROPANE.


Indicate Capacity of the Burner: 500 Mcal/h

Each zone of the oven ( 3 per oven) must have its own temperature control and send the information of the variables to the central control desk, from where we will can see and modified these variables.

2.15.3. Building of the oven.

Each modules will be built as a steel structure strong and sturdy enough to support the inner plenums and thermally isolated by sandwich-type walls.

FEATURES OF INNER COATING OF THE OVEN


BY BSC

TYPE OF STEEL 304

THICKNESS OF STEEL 0.5mm

FEATURES OF OUTER COATING OF THE OVEN


BY BSC

TYPE OF STEEL Coated steel

THICKNESS OF STEEL 0.5mm

FEATURES OF THE INTERMEDIATE ISOLATION


BY BSC

ISOLATION THICKNESS 150 mm

TYPE OF MATERIAL Glass fiber

MATERIAL DENSITY 120Kg/m³

In the entry and exit of the oven, a collector and removal hood of the smokes which can get out of the oven, which will also be led to the scrubber.


The oven, burner and combustion chamber will be prepared to work with maximum air temperature of: 280 ºC ,1000 ºC -1200 ºC , 700 ºC -800 ºC and a temperature of the coil PMT de 250 ºC

2.16. AIR COOLING UNIT

General Description

The function of this units lowering progressively and rapidly the temperature of the plate until approximately 40ºC in order to can continue with the process without the risk of damage the coating upon being too hot.


This unit will be built on a machining and welded strong and sturdy structure in order to avoid vibrations in the work process.

Each one will have an upper plenum and another lower with diffuser ports of the air on the plate.

The ports in the two first meters of the plate entry to the air cooling tunnel will be inclined 20-25ºC towards the exit. The rest ports will be perpendicular to the plate. Their function will be avoid the cold air enters the oven.

The air arrives to the plenums impelled by a turbine and they make to pass through dry filters to avoid that borne particles are projected against the coated plate.

FEATURES OF THE PLENUMS


BY BSC

TYPE OF STEEL 304

THICKNESS OF THE STEEL 1.5mm

FEATURES OF THE TURBINE AND DUCTS


BY BSC

DUCT DIAMETER ø500mm

MATERIAL TYPE 304

MATERIAL THICKNESS 2mm

TURBINE ENGINE POWER 4Kw


AIRFLOW (M3/H) 8000m³/h

GENERAL FEATURES OF THE AIR COOLING UNIT


BY BSC

UNIT LENGTH 5400mm

7400mm

ENTRY TEMPERATURE OF THE STRIP

ALUMINUM: MAX.240 ºC

STEEL: MAX.220 ºC

EXIT TEMPERATURE OF THE STRIP

ALUMINUM: MAX.60 ºC

STEEL: MAX.60 ºC

2.17. CORRECTION CENTER UNIT


The function of these units is correcting the strip position along the whole line and maintain it centred according to the theoretical axles of the installation.


The unit consists of a electrically welded steel bed frame strong and sturdy enough to support the tension exerted by the strip.

This frame incorporate a guided platform spinning on an axle in order to make the correction sliding which will be operated by an hydraulic bottle with its corresponding feed.

The guided will be made by means of ball bearings which will be perfectly adjusted to avoid any gap in the correction sliding.


This unit incorporate two rollers which will be fastened by bearings.


BY BSC

ROLLER DIAMETER Ø400mm

ROLLER MATERIAL20# STEEL ,45# STEEL,RUBBER

ROLLER COATING RUBBER

ROLLER COATING HARDNESS 85-90 (SHORES A)

ROLLER COATING THICKNESS 15mm

2.18. EXIT LOOPING TOWER

Device previously seen.

Those items are the same as the previously described ones in the entry section.

2.19. RECOILER

The function of this machine is picking up the plate already coated and recoiling with precision in the edges.

It has the same parts as a uncoiler but with a precise edge sensor system.

Increase information of the sensors used in the edge sensor systems of the uncoilers and the recoiler. It have a tension and speed control, recoiled meters measure system.

The decoiler have such a precision that let us make coils with a maximum deviation of 0.5 mm regarding width.

2.20. INSPECTION DESK

It will be used to place a desk for making the quality control of the lacquered plate before recoiling or continuous.


This desk will have rollers of rubber in order not to damage the plate coating.

3. GENERAL SPECIFICATIONS.

3.1. MACHINE SAFETY

The supplier build the unit having into account the regulations of CE mark for machinery and tools.

3.2. GUARANTEE

The period of guarantee is established from one year from the date of line startup for all the elements of the line.

3.3. Electric And Electronic Compounds

o All the engines have to be of alternating current and from European trademarks or providing service in Europe

o The frequency changers have to be from European trademarks or providing service in Europe

o All the wires of the machine have to be properly protected into suitable tubes.

o Power 400V/240V +/-10%

o Frequency: 50 HZ

o Total power once installed: 360 kW.

o Automaton: Siemens Trademark etc.

o All the temperature control systems will be from trademarks providing service in Europe, OMROM, Scheneider, etc.

o All the electric equipment of low voltage will be from trademarks providing service in Europe.

o All the machine have to can control from a central PLC.

o In the central control exist a functional diagram of the line in which we can see all the elements and variables of the line, speed, temperatures in the ovens, pretreatment, speeds of the rollers in the coating room, etc. and can modify them.

o The electric boards will have ventilation and all the inner components of operation from European trademarks.


3.4. Pneumatic and Hydraulic compounds

o All the Pneumatic and Hydraulic compounds will be from European trademarks or providing service in Europe

o There will have to include pressure regulators for all the cylinders of the installation.

1250mm aluminum and steel coil coating line

Documents