A.    Technical agreement

Product variety, production capacity and technical data of the production line:

2、1 unit parameters:

2.1.1Unit speed: 14-40m / min;

2.1.2Molding method: ztf molding;

2.1.3Production direction: left in and right out (the transmission end is on the wall side)

2.1.4The center elevation is + 1000mm;

2.1.5Production capacity: 150000 tons / year

   2.1.6Total installed power: about 5000kW (excluding workshop lighting and supporting power)

   2.1.7Compressed air:

         Flow rate: 10m3 / min

        Pressure: 0.7MPa

   2.1.7Circulating water source:

        Unit water flow: 30 m3 / h

Reservoir volume: 120m3

2.2Product specification range:

    2.2.1Diameter of finished steel pipe: Φ 114.3 - Φ 355.6mm

2.2.2Wall thickness of finished steel pipe: 3-14mm (16mm)

(when the material is Q235-B, it has the ability to produce Φ 355.6 mmx16mm)

    2.2.3Length of finished steel pipe: 6-15mm

    2.2.4Length accuracy: 0-5mm (computer flying saw)

  2.3Raw material conditions:

2.3.1Material: low carbon steel, low alloy structural steel, API Spec 5L X70;

API Spec 5CT ( J55,K55);

Mechanical properties: σ B ≤ 758mpa, σ s ≤ 600MPa

    2.3.2Strip width: 350-1105mm

    2.3.3Strip thickness: 3-14mm (16mm)

    2.3.4Inner diameter of strip coil: 580-760 mm

    2.3.5Outer diameter of strip coil: 1400-2200mm

  2.3.6Coil weight: ≤ 35t

 Structure selection, configuration and technical performance description of production line equipment

Main equipment parameters:

5.1Storage bench

5.1.1Function: storing and releasing steel coil

5.1.2Equipment parameters:

Outer diameter of steel coil: φ 1400 ~ φ 2200mm

       Strip width: 350-1105mm

       Maximum weight of coil: 35t

Storage capacity of strip steel: 2 rolls

5.1.3Equipment structure:

Two groups of shallow V-shaped plates made of steel are directly fixed on the base of reinforced concrete foundation, and the two groups of shallow V-shaped plates can be adjusted according to the width of steel strip.

5.2Winding car

5.2.1Function: take down the coil from the storage stand and send it to the uncoiler.

5.2.2Equipment parameters: outer diameter of steel coil: φ 1400 ~ φ 2200mm

    Strip width: 350-1105mm

Maximum weight of coil: 35t

Maximum lifting height of steel coil: 900mm

Lifting cylinder diameter: 220mm

Hydraulic system pressure: 12MPa

Maximum lifting force of lifting cylinder: 40t

Number of guide rods: 4

Trolley travel: hydraulic motor or electric motor

Traveling speed of trolley: 10M / min

Trolley travel: 7M

5.2.3Equipment structure:

The V-shaped lifting platform of the feeding trolley is a four column hydraulic lifting platform, and the trolley is driven by hydraulic motor or electric motor.

5.3Decoiler

5.3.1Function: support and unfold the coil.

5.3.2Equipment parameters:

Outer diameter of steel coil: φ 1400 ~ φ 2200mm

          Strip width: 350-1105mm

Maximum weight of coil: 35t

Base moving distance: 900mm

Outer diameter of cone head: φ 760

Uncoiling mode: upper uncoiling mode

Seeker speed: 12m / min

Drive: cone drive hydraulic motor or motor

5.3.3Equipment structure:

It adopts double cone head expansion mechanism, hydraulic motor and brake drive cone head uncoiling, and has micro tension performance.The double cone head adopts hydraulic centering.

5.4Coil opener

5.4.1Function: press and shovel the coil head.

5.4.2Equipment parameters:

          Outer diameter of steel coil: φ 1400 ~ φ 2200mm

Strip width: 350-1105mm

Outer diameter of pressure roller: 300 mm

Pressure roller drive motor: ac5.5kw

Uncoiling speed: 15m / min

5.4.3Equipment structure:

The upper pressure roller is a steel roller with rubber structure, which is controlled by hydraulic cylinder and driven by motor. It drives the coil to rotate when uncoiling.The blade controlled by hydraulic cylinder can stretch and swing according to the diameter of the steel coil to be dismantled, which can adapt to the dismantling head of the steel coil with various size requirements.

5.5Lead leveling machine

5.5.1Function: introduce the strip head from decoiler to level the strip.In addition, it can run synchronously with the looper feeder for active leveling, and can also open the transmission clutch for passive leveling.

5.5.2Technical parameters:

Strip width: 350-1105mm

Strip thickness: 3-14mm (16mm)

Drive motor: ac45kw

Feeding speed: 8 ~ 30m / min

Hydraulic system pressure: 10MPa

Flattening roller Screwdown Motor: ac3kw ×2

Diameter of feeding roller: φ 380 × 2140 material: 42CrMo

Diameter of leveling roller: φ 200 × 2140 material: 42CrMo

Lower cylinder of feeding roller: φ 200 × 400

5.5.3Mechanism composition: the upper feeding roller is pressed down by hydraulic pressure.Five leveling rolls (upper 2 / lower 3), including mechanical reduction system, balance system, universal drive shaft, reducer, clutch, motor, etc.(up and down active, upper roll can be monotonous)

The leveling roller is pressed down by motor, reducer, worm gear pair and screw rod.High performance balancing system for upper roll screwdown (adjustment needs digital display).

5.6Shear butt welding machine

5.6.1Function: the leveled strip head enters the machine and is connected with the tail of the previous coil. In order to prepare for continuous production of welded pipe, the head and tail should be sheared and welded after the gap is adjusted, that is, the shearing and butt welding process is completed.

5.6.2Equipment parameters:

Strip width: 350-1105mm

Strip thickness: 3-14mm (16mm)

Strip grade: X70 API 5L; J55 K55 API 5CT

Material properties: σ B ≤ 758mpa, σ s ≤ 600MPa

Hydraulic system pressure: 16MPa

Cutting mode: Hydraulic up cutting (up cutting and down cutting)

Oblique cutting angle: 5 degrees

After welding, the irregularity of steel plate is ± 0.6mm, and the dislocation is ≤ 1.5mm

Weld bead height after welding: ≤ 1 mm

Butt welding time parameter table: plate thickness ≤ 10mm max.8min

                   Plate thickness ＞ 10 mm max.9 min

5.6.3Equipment structure: it is composed of bed, centering device, shearing machine, front plate moving machine, back plate moving machine, traveling system, welding device and hydraulic system.The pinch device is composed of inlet guide roll and outlet guide roll.The hydraulic shear is composed of upper crossbeam, upper shear blade and lower shear blade, guide post, oil cylinder, shear plate, etc.Up cutting type oblique cutting edge.

The bed can move laterally through the guide rail, so that it can ensure the accurate position of each function, that is, the head and tail should leave the weld according to the process requirements, and the welding gun should find the weld accurately and weld automatically.(including welding system)

5.7Horizontal accumulator

5.7.1Function: the horizontal spiral looper is used to store the steel strip, store the butted steel strip into the looper, and supply the material for the forming and sizing unit. Under the condition of ensuring the continuous production of the forming and sizing unit, it provides the time interval for completing the coil connection work.The looper is a fixed ring system, which works in and out from the outside. During the working process, the number of steel belt turns in the looper remains unchanged. The looper is easy to install and operate, and the steel belt does not fold repeatedly in the looper, and there is no local plastic deformation. The discharge is smooth, the discharge resistance is small, and the steel belt has no plastic deformation. The energy consumption, roller consumption and bearing wear of the forming and sizing unit are low, which can improve the welding qualityQuantity and yield.

5.7.2Equipment parameters:

          Thickness of steel plate: 3-14mm (16mm)

           Width of steel plate: 350-1105mm

          Charging speed: max20m / min

5.7.3Equipment structure: it is composed of strip front torsion device, feeding host, strip back torsion device and transmission device.The machine has its own protection function, and can operate normally when the thickness of the plate changes suddenly.

5.8Ultrasonic flaw detection of steel strip(not in the scope of supply)

5.9Edge milling machine(not in the scope of supply)

5.10Forming and sizing unit

Forming 10 flat rolls, 6 rotary vertical rolls, 1 polishing roll, 4 sizing flat rolls, 3 vertical rolls;

2Rough straightening

There are 15 motors, all of which are AC variable frequency adjustable speed motors

75kW 8 sets, 110KW 7 sets

There are 15 reducers, all of which are hard gear reducers

5.101 forming unit

5.10.11. Rough forming section:

Number of forming frames: 7

Rack spacing: 1800mm;

Frame structure: gantry type

 Adjustment mode and range of rough forming roll:

(1) Strip feeding device:

          It can be used to ensure that the strip steel is accurately guided into the first forming frame.It consists of a pair of horizontal rolls and two vertical rolls.The opening and closing of the two vertical rollers are adjusted by the motor drive, and the rollers need not be replaced, so they are completely shared.

(2) The first horizontal frame:

          Pinch roll, the sheet into the next frame, at the same time participate in part of the deformation.The height of the lower roll is fixed, the height of the upper roll is adjusted by the worm gear box driven by the motor, and the prestressed disc spring assembly is used as a safety device against overload.The motor is controlled by the computer and adjusted automatically. The roller is not needed to be replaced and is completely shared.The roller shaft is driven by a motor through a reducer and a universal joint shaft.The upper and lower shafts are active transmission.

(3) , the second and third horizontal frames:

          It is used for bending edge forming. The lower roller is installed on two sliding seats. Two motors drive the two sliding seats to slide on the lower shaft for opening and closing adjustment. The sliding seat and the lower roller shaft are installed in the lifting chute. The chute is driven by one motor for lifting adjustment in the frame.In this way, when the lower roll is under forming force, the force is transferred from the sliding seat to the chute and borne by the frame, so the roll shaft will not be subject to great force.

          Two rotatable upper rollers are also installed in a chute, and the chute is driven by two motors at the same time for lifting adjustment in the frame.The rotation of the two rollers is also driven and adjusted by two motors respectively, and the opening and closing of the two rollers are also driven and adjusted by two motors respectively.

          All adjusting motors are controlled by computer, automatic adjustment, roll does not need to be replaced, completely shared.The lower roller shaft is driven by a motor through a reducer and a universal joint shaft.The upper axis is passive.

(4) The fourth, fifth and sixth horizontal frames:

          It is used to bend the edge and part of the waist.The upper roller is installed on two sliding seats, and the two sliding seats are driven by two motors to slide on the upper shaft for opening and closing adjustment. The sliding seat and the upper roller shaft are installed in the lifting chute, and the two motors drive the chute in the frame for lifting adjustment.In this way, when the upper roll is under forming force, the force is transferred from the sliding seat to the chute and borne by the frame, so the roll shaft will not be subject to great force.

          The lower roll is fixed on the lower roll shaft without adjustment and replacement.

       The side roll frame together with the lower roll shaft is installed in the sliding groove, and the sliding groove is driven by a motor for lifting adjustment in the frame.The side roller frame is fixed on the chute and can slide on the chute. The two side roller frames are respectively driven by two motors for opening and closing adjustment.The height of each side vertical roller is fixed. In order to meet the product specifications, the sixth side vertical roller is made into a tower roller.

           All adjusting motors are controlled by computer, automatic adjustment, roll does not need to be replaced, completely shared.The upper and lower roller shafts are driven by motor through reducer and universal joint shaft.They were all active.

(5) The seventh horizontal frame:

          It is used to bend the waist and provide power for the rotating vertical roller group.The height of the lower roll is raised and lowered by a motor driven elevator, and the height of the upper roll is raised and lowered by a motor driven worm gear box. The prestressed disc spring assembly is used as a safety device against overload.The side roll frame is installed on the frame and is driven by the motor for opening and closing adjustment. The height of the side roll can be adjusted by the worm gear box to meet the needs of high precision tube fine adjustment.

       All adjusting motors are controlled by computer, automatic adjustment, roll does not need to be replaced, completely shared.The upper and lower roller shafts are driven by motor through reducer and universal joint shaft.They were all active.

(6) Rotary vertical roller group:

          For the waist molding, a total of six, arranged in two groups.

         The opening and closing of the two rollers are adjusted by a motor, the lifting and lowering of the two rollers are adjusted by a motor, and the rotation of the two rollers is adjusted by two motors,

       All adjusting motors are controlled by computer, automatic adjustment, roll does not need to be replaced, completely shared.

(7) All frames are cooled and lubricated by emulsion supplied to the forming roller through the nozzle.All shafts are supported by rolling bearings. This design can ensure smooth operation, high efficiency, low noise and long service life.The main drive of the forming machine adopts AC variable frequency speed regulating motor, which is separately driven by the reducer. The electric control system controls the synchronization of each frame, and realizes stepless speed regulation, so as to meet the needs of product forming speed.

5.10.1.2 Roll changing mode of rough forming machine:

The rolls in the rough forming section are completely shared, and there is no need to replace or disassemble them. They are only controlled by the computer and adjusted by the motor.

5.10.1.3Structure of vertical roller group:

According to the needs of the forming process of the production line, the unit is equipped with two types of vertical rolls, the vertical roll with straight axis and the vertical roll with rotating axis. The vertical roll with straight axis is mainly used for the transition deformation of the feeding and guiding forming process, and the vertical roll with rotating axis is used for the "ztf" forming of the round tube forming.

Number of vertical rolls:

There are two vertical rollers with straight shaft, shaft diameter: 160mm, material: 40Cr

Six vertical rollers with rotating shaft

The vertical rollers in the rough forming section are completely shared, and need not be replaced, disassembled or disassembled, and only need to be adjusted

5.10.1.4Reducer:

The structure of cylindrical gear is adopted. The material of gear is 20CrMnTi. After carburizing and quenching, the service life is improved.Durable, easy to maintain and replace

5. 10.2Closed pass frame group (fine forming)

5.10.2.1Function: gradually deform the open tube blank into the tube blank to be welded.

5.10.2.2Equipment parameters:

Number of horizontal frames: 3

Diameter of horizontal shaft: 240mm

Material of horizontal axis: 42CrMo

Frame material: zg270-500

Driving motor: ac110kw ×3

Adjusting motor: ac3kw (digital display)

    5.10.2.3Equipment structure: finpass is composed of frame, upper and lower horizontal roller seats, left and right roller seats, adjusting mechanism and transmission device.The stand is a four high universal mill.Change the roll to the up out type.

The three finpass molding are separately driven.

5.10.2.4 Adjustment mode and range of finishing roll:

The upper roll of the horizontal frame can be adjusted up and down by a solid worm gear device, and the prestressed disc spring assembly is used as a safety device against overload.Roll shaft of horizontal frame: it adopts rolling bearing and is driven by main transmission device through distribution gearbox and universal joint shaft.All shafts are supported by rolling bearings. This design can ensure smooth operation, high efficiency, low noise and long service life.Plug in vertical roller: it can be inserted into the horizontal frame, and the position and reduction of the side roller can be easily adjusted by gear reduction according to the forming needs, and it can be slightly adjusted.Transmission of forming machine: AC variable frequency speed regulating motor is used to drive independently through reduction distribution gear box, and each frame is synchronized by electric control system to realize stepless speed regulation, so as to meet the needs of product forming speed.

5.10.2.5Roll changing mode of fine forming machine:

The roll changing frame of the precision forming machine is a top open arch structure, that is, the upper cover of the frame can be lifted away with a crane, two roll shafts can be lifted out with a crane, and two roll shafts and inserted vertical rolls can be lifted out in turn with a crane

——Press down the screw to connect the plug board

——Loosen the connecting bolt of plug-in vertical roller seat

——Make a wedge and loosen the fixed shaft

——Lift the beam

——Lift out the upper shaft with double bearing pedestal by crane

——Lift out the inserted vertical rolls one by one with a crane and place them in the roll changing area

——Lift out the lower roller shaft and bearing with crane

——Place the shaft in the roll changing area and clamp the roller shaft at the bearing seat on the drive side

——Pull out the bearing pedestal on the operation side with the pulling device and lift it away with the crane

——Release the assembly roll sleeve and pull out the roll

——Hoist the roller away with a crane

Roll loading is carried out in reverse order

——Open the plug-in vertical roller box

——Replace the whole set of vertical roller (including shaft, bearing and roller)

The insertion type vertical roller is loaded according to the reverse steps

5.10.2.6Reducer:

The structure of cylindrical gear is adopted. The material of gear is 20CrMnTi. After carburizing and quenching, the service life is improved.Durable, easy to maintain and replace

5.10.3Welding equipment

Guide roller

       It is used to control the deviation of the plate edge and form the correct opening angle to ensure the welding quality.(adjust the digital display).

5.10.3.1High frequency welding extrusion part

Function: extrude and weld the tube side heated by high frequency.

Equipment parameters:

          Solid state induction contact dual purpose high frequency welding machine 800-1200kw

Main extrusion roller shaft diameter: 250mm, material: 42CrMo;

Shaft diameter of upper roll: Φ 130mm, material: 40Cr; upper roll can be adjusted horizontally.

Equipment structure: five roll extrusion welding device, five roll extrusion welding combination is left and right inclined down roll, left and right vertical roll, in addition, there is a group of top roll. The upper and lower rolls are divided into two groups, which are respectively installed in two semi arc brackets. By adjusting the arc bracket longitudinally, the radial expansion of the extrusion roll can be realized, so as to achieve the purpose of adjusting the extrusion pressure,It can also be adjusted manually to achieve the guiding effect. When changing the roll, replace the pre installed roll base and frame type welding frame.

5.10.4External burr removal function:

Planed the outer weld and automatically cleaned the waste wire into the material basket outside the equipment

Equipment parameters:

Adjustment range height direction: 260mm

         Horizontal direction: 50mm

Number of planers: 2

Tool specification: 40 × 40mm

Roughness after planing: RA ≤ 25um

Number of planers: 2 (one for use and one for standby)

Cutter head material: cemented carbide

Equipment structure: deburring device.There are two sets of mechanical planers, one for standby, with elevator adjustment up and down, and pneumatic quick lifting mechanism for quick adjustment.The main thorn is collected after chip breaking.

5.10.5Weld flattening frame: 1

As the frame in front of the cooling device, it is used to stabilize the movement state of the steel pipe and press the uneven part of the planer before the steel pipe is completely cooled.

Equipment parameters:

             Horizontal shaft diameter: 240mm

            Upper roll adjustment: 260mm

The roll does not need to be replaced;

Motor power: 75kW, AC motor frequency control

Equipment structure: the frame consists of frame, upper and lower horizontal roller seats, upper and lower rollers are moving; upper roller is electrically adjusted, digital display; with quick change function.

5.10.6Weld water cooling device: 1 set

Function: the steel pipe is air-cooled and water-cooled after high-frequency heating welding and medium frequency heating annealing, so that the surface temperature of the steel pipe weld does not exceed 300 ° C, so as to enter the integral section for further shaping and straightening.

Equipment parameters: cooling capacity

Coolant flow: 25m3 / h

The working pressure of coolant is 0.3MPa

Effective cooling length of air cooling: 65000mm

Effective cooling length of water cooling: 8000mm

Surface temperature of outlet weld of cooling equipment: no more than 50 °C

Equipment structure: weld cooling device is composed of air cooling section, circulating water tank, circulating water system and steel pipe guide device.The welding seam is cooled effectively to avoid the bending deformation of the product due to uneven or insufficient cooling. The upper, lower, left and right guide devices are equipped in the cooling section to ensure that the steel pipe head enters the shaping frame.The guide device has enough rigidity and easy disassembly.

5.10.7Sizing unit

Number of sizing frames: 4

Number of inserted vertical rollers: 4

Number of vertical roller with straight axis: 1

The parameters, adjustment mode and roll changing mode of sizing unit are the same as those of fine forming

5.10.8Turkey head straightening frame (single side)

Function: correct the bending and torsion of the product.Number of Turkish heads: 2 sets

Equipment parameters:

    Distance between straightening frame and last shaping frame: 2400mm

     Roll material: 42CrMo

    Roller radial adjusting motor: ac1.5kw ×2

    Horizontal adjustment motor: ac4kw

    Vertical adjustment motor: ac4kw

    Roll radial adjustment: 130mm

    Roll axial adjustment: 130mm

Equipment structure: Turkey head straightener is set up after the last sizing frame, which is composed of two frames arranged together to form the correction and straightening of steel pipe with sizing frame.(Turkey frame is installed on the front and back of the fourth sizing frame, one for each)

5.11. roll

Roll material: 9Cr2Mo

Hardness of roll: HRC58-62

Depth of hardened layer: ≥ 10mm

Surface roughness: RA ≤ 0.8um

Description of roll configuration process;

The advanced "ztf" roll forming system is used in the production of round pipe. The roll in the open forming section can meet the forming requirements of various specifications of steel pipe. In the interval range, between φ 114 and φ 355, there is no need to change the roll in the open forming section, and the roll commonality is more than 60%.In the process of roll matching, the specification can be changed only by adjusting the distance and angle of rolls.

5.12 fixed length cutting machine (flying saw)

Function: the fixed length cutting machine adopts two pieces of circular cutters for radial milling and cutting, and is controlled by computer program to meet the requirements of fixed length cutting.

Technical parameters:

Specification of steel pipe: Φ 114.3 - Φ 355.6mm

      Steel pipe wall thickness: 3-14mm (16mm)

      Length: 6-15m

      Length accuracy: 0-6mm

      Milling blade: 2 pieces

       Milling motor: ac55kw

      Traction motor: ac-s47kw

      Hydraulic system pressure: 10MPa

       -The steel pipe is cut by radial milling with two circular cutters.

       -It adopts numerical control operation mode.

5.13Hydraulic system

Provide low pressure or high pressure oil for all hydraulic cylinders in the production line.

The hydraulic system consists of pump station, valve station, cooling system and pipeline.Rexroth series valves are selected.

Ambient temperature: 10-45 °C

Oil pressure medium: l-hm46 anti-wear hydraulic oil (if the ambient temperature is too low or too high, use the oil recommended by the oil company)

5.14Pneumatic system

Function: provide pneumatic control for each part to meet the action requirements.

All indexes of compressed air:

   Purity: 0.5g/nm3

   Particle size: 10-15 μM

   Oil content: ＜ 5g / Nm3

Dew point: - 40 ℃ (under standard atmospheric pressure)

Temperature: ambient temperature

Pressure: 0.5-0.8mpa

Consumption: 300nm3 / h

Maximum flow: 700 Nm3 / h

5.15Electronic control system

1Main motor

1.1Control object:

Rough forming main motor 75KW × 7 (AC variable frequency motor)

Precision forming and sizing 110KW × 7 (AC variable frequency motor)

Pull out the main motor 75KW × 1 (AC variable frequency motor)

1.2Control system scheme:

15The main motor is controlled by Yaskawa inverter (four quadrant reversible, encoder position feedback)

YASKAWA inverter data: speed feedback

               ② Current

               ③ Speed setting

It communicates with high performance PLC through PROFIBUS, and high performance PLC communicates with 12 inch LCD touch screen.The LCD touch screen is used to control and adjust the rotation of each motor. The interface can set the speed reduction ratio from each motor to the roller and the diameter of the roller. According to this, the linear speed of each roller can be calculated and displayed on the LCD touch screen.

    15The linear speed of the roller driven by one motor is set as 1.000, and the linear speed of the roller driven by the other 14 motors can be set in the range of 0.000-2.000.For example, if it is set to 1.010, the linear speed of the roll will be 1% higher than the linear speed of the reference roll, resulting in tensile tension. If it is set to 0.990, the linear speed of the roll will be 1% lower than the linear speed of the reference roll, resulting in extrusion tension.

   It can be set and combined with group parameters. After setting, the parameter group can be stored. After using this parameter group, it can be called out directly without setting again. The contents of each parameter interface are shown in the attached figure.

2.Position adjusting motor

2.1Control object: about 70 sets (2.2kW ~ 4kw AC motor)

2.2Control system scheme:

Each AC motor is controlled as a quasi servo axis, and the position control mode is selected. The encoder (Omron) is connected to the motor axis. When the motor is rotating, the encoder transmits the position pulse signal of the motor to the high-performance PLC. The high-performance PLC calculates the position given value, deceleration ratio, lead screw, feed curve and other parameters set by the LCD touch screen, and the data is passed through the PLCAccording to the bus transmission to Yaskawa inverter, through Yaskawa inverter to accurately execute the motor running position, and through the data bus, the current, speed and other parameters read by Yaskawa inverter are transmitted to PLC, and the PLC is transmitted to the LCD touch screen through the data bus to display the relevant signals.

Five groups of parameters and setting values can be stored. Each axis control has its own setting and feedback parameters, which can be set and read for observation.

The original position of each axis is the mechanical setting switch position. The CNC system takes the original position as the initial position and the position clearing point. All axes can return to the mechanical initial value through the control system.

3.Other relay and interlock control

3.1Control objects: uncoiling, leveling, looper, flying saw, roller table, packing, high frequency, etc. and the control chain between the main console.

3.2Control system scheme:

Uncoiling, leveling, high frequency, looper, flying saw, roller table, packing and other control systems need interlocking function, which is input to PLC through I / o point, PLC through I / o point on and off, LCD touch screen setting through program integration, output control I / O signal, each need interlocking control object can be operated by LCD touch screen, and its working state can be displayed.

4.Main devices:

Inverter: Japan Yaskawa GT (encoder feedback board) quantity (about 75 sets)

PLC: Siemens 400 quantity (3)

LCD touch screen: Siemens 12 inch quantity (1)

  Communication bus cards: number of Yaskawa in Japan (about 75)

  Main console: 1

  Sub control cabinet: about 25

5.The installed capacity is about 5000kv

                                                                                            B.Scope of supply:

Coil car

Uncoiler

Coil opener

Lead leveling machine

Shear butt welding machine

Horizontal accumulator

forming and sizing unit

Roll

Fixed length cutting machine (flying saw)

Hydraulic system

Pneumatic system

Electric control system

Solid-state high-frequency