China Cold Rolling Mill Rolling Mill Steel Strip Plant

Φ150/Φ600x750AGC Rev.Cold Rolling Mill
1. Rolling Condition
1.Rolling material:CK22,CK45,CK67,CK75,Ck100
2.Blank specification:thickness H=5.0mm,Width B=600mm;
3.Product specification:thickness H≥0.28mm,Width B=600mm;
4.Coil inside diameter/Coil outside diameter:Φ600/Φ1500mm;
5.Max. coil weight:W=12000KG;
6.Max. rolling force:P≤8000KN;
7.Rolling speed:V=0-150m/min(adjustable);
8.Winding tension:T≤90KN.2. Process flow
Hydraulic loading and unloading trolley→Hydraulic up indent type place rack→Two roller pinch and five roller leveling devices→Wedding and cutting platform→Floor standing loop→Feed inlet technology platform→Main rolling mill→After machine processing platform →Hydraulic up intent type coiling set →Hydraulic loading and unloading trolley
3.Rolling mill equipment configuration
3.1Place rack(Hydraulic up and intent type): one set
3.2Two roller pinch and five roller leveling device : one set
3.3 Wedding and cutting device: one set
3.4 Floor standing loop: one set
3.5 Feeding technology platform: one set
3.6Main rolling mill: two sets
3.7 Thickness meter(need to be set by yourself) two sets
3.8Tensile machine: one set
3.9Outletprocessing platform: one set
3.10Hydraulic four pyramid coiling machine: one set
3.11Machine nearby control box: two sets
3.12General service desk: one piece
3.13Hydraulic stationtwo sets
3.14Thin oil station:one set
3.15 A full set of anchor bolts4. Main technology data4.1 Hydraulic up and intent type place rack
Reels are cantilever type structure, top opening coil type,configure a auxiliary hydraulic feed roller device.
(Cycloidal-pin wheel reducer driver capacity is 4kw)..
▪ Main function is to support to be rolled steel coil.
▪ Reels specification:φ600x800mm
▪ Up-necking volume:50mm (φ470~φ520mm)
▪ Coil car: mail be made up of saddle, cross traveling trolley, guide rail etc. Up-down movement of saddle and cross traveling of trolley all be driven by hydraulic cylinder.4.2 Two rollers pinch and five-roller straightening device
▪ Straitening machine types:two rollers pinch type,five-roll straightening type.
▪ Top pinch roller's lift movement be driven by hydraulic cylinder while lower pinch roll is immovable.
▪ Three lower straightening rolls is immovable and two top straightening rolls be driven by hydraulic cylinder to quick lift, so that is easy to through the belt.
▪ Front end of straightening machine be equipped with hydraulic lifting telescopic guide board white the back end equipped with immovable guide board.
▪ Pinch roll specification:φ160*800mmx2
Straightening roll specification:φ140*800mmx5
▪ Driving motor:AC frequency conversion motor with the capacity of 15kw4.3Wedding and cutting device
▪ Be composed of adjustable centering roller guides, hydraulic shear, two both sides hydraulic pressure belt, base etc.
▪ Main function is to cut off the head and end of steel belt, then to butt-wedding.
▪ Dimension that the hydraulic shear machine can cut is 4.5x700mm.4.4 Disc floor standing looper
▪ Be composed of horizontal feed roller, steel strip turn roller, vertical feed roller, pinch device, turntable of loop,diagonal roller device, discharge guiding device, high bracket platform, pinch motor, turntable driving motor etc.
▪ Main function:storage the continuous to be rolling steel strip, implement endless rolling.
▪ The clamping of pinch devices adopted cylinder action.
▪ Looper stocks: diameter is 7m,Max bankable of steel belt is 30 ton.
▪ Pinch motor:AC frequently motor 30KW
▪ Rotary table motor:AC frequently motor 7.5KWx15
▪ Pinching speed: 18~180m/min4.5 Feeding inlet technology platform:
▪ Be composed of steering roll, adjustable centering roller guides, hydraulic control belt, base etc.
▪ Main function is to turn to elevated steel and to centering them, hydraulic control belt can provide enough hind tension.
4.6Main rolling mill φ150/φ600x750
4.6.1 Roller Assembly
▪ Working roller φ150x750material:9Cr2Mo
Bearings are FC series positive bending device (adopting proportional valve to control )
Single side max bendNon Woven Bag ing force is 200KN,max bending force is 400KN
▪ Back-up roll φ600x720 mm material:9Cr2Mo
The type of Bearing is FCD72104380, both back-up roll and bearings be oiled by grease lubrication system.
▪ Driving mode: back-up roll transmission4.6.2Screw down device:hydraulic pressure AGC(hydraulic screw down)
AGChydraulic automatic thickness control system is a indispensable technology device in improving the rolling precision, in the meantime this system is an important guarantee for manufacturer to achieve advantages in the future competitive market. In order to ensure the accuracy of thickness and good form factor of the steel strip products, this system has the hydraulic pressure gauge control (AGC), constant rolling press control (AFC), thickness pre-control and monitor etc capability. This system works reliable, operates conveniently and self-protection function is complete, has also database of rolling technologyOther Manufacturing & Processing Machinery . When rolling different strip with different specifications, there need only to call out correct rolling process, that you can set the rolling state before the beginning of each rolling. 4.6.3System parameter of hydraulic AGC
▪ System working pressure:21-25MPa,max pressure:32Mpa
▪ Filtering accuracy: 5um
▪ Pressing speed: 3mm/s(can be adjusted)
▪ System resonance frequency: 15-20Hz
▪ Diameter of screw down cylinder:φ500mm
▪ Screw down cylinder be made with SKF high quality forged alloy steel, and passed three nondestructive testing.
▪ Screw down cylinder stroke: 70mm
▪ One screw cylinder on both the left side and right side, max pressure of the double cylinder is 800T.
▪ Working medium:46# anti-wear hydraulic oil.
▪ Displacement sensor;American MTS,accuracy is 0.5um,be installed inside the fuel tank,it is absolute coding and also is transmitted by SSI high speed communication and signals. Displacement sensor can remember the original calibration values, no need to re-pressed by, and have a high operational efficiency.
▪ Function description
Automatic roll gap position control.
Automatic rolling force control
Pressure bias-adjustment
Thickness monitor
Thickness previous control
Setting of rolling process4.6.4Stand assembly:Closing mill housing,column section:350mmx450mm, glossy surface;
b.Mill housing integral processing, manual shoves blows, equipped with liner.
C. Track materials:casting steel;
d.Rolls axial location pressure-plate;
4.6.5Main driving parts:
a.Main motor type:DC Z-500-1,capacity P=670KW,rotational speed V=724/1200r/min(440V/1294A);
b.Reducer:ZLY560,I=16;(Jiangsu Guo Mao cathay Pacific)
c.Herringbone gear box:center distance A=900mm,M=16,B=600mm,gear surface frequently hardening;
d.Lubrication of reducer and bigeminal box:thin oil lubrication;
e.Transmission shaft type:metallurgical cross cardan shaft φ365x1800;
f.base:welding parts aging treatment.4.7 Discharge gate technology platform
▪ Squeezing device, thickness gauges placeholder, steering roll device.
▪ Steering roll specification:φ200x800,material 40Cr,tempering and quenching treatment.
▪ Squeezing device:adopted four-roll hydraulic typesqueezing specification:φ120x8004.8Four pyramid hydraulic coilers
▪ Four pyramid hydraulic coiler be composed of DC motor, winding gear box,up intent type of spindle and cantilever supporting etc.( be equipped with hydraulic pliers)
(1) Reel diameter: φ600x800mm up necking volume:14mm
(2) Max tension:90KN
(3) Weight of material bearing:8t
(4) Max coiling diameter:1.8m
(5) Coiling motor:Z4-315-42 N=250KW n=600/1600r/min
Voltage:380V
(6) Coiling reducer model:homemade medium hardened gear surface, and thin oil lubrication
Hydraulic lifting trolley be composed of lifting stand, trolley seat frame, guide column, lifting fuel tank, movable fuel tank,trolley guide rail etc. Trolley's lifting and walker both be driven by fuel tank.
4.9Hydraulic station:4.9.1 One set of normal driving hydraulic station
▪ Hydraulic station:system pressure is 6.3MPa, max pressure is 8MPa
Motor:Y132M2-6B5 5.5KW 960r/min
▪ Hydraulic pump model:YB1-40
▪ Hydraulic station is equipped with chiller, liquid location display, oil filter. Controlling pressure sectional by the valve. 4.9.2 Roller bending hydraulic station
▪ Oil tank volume: 360L
▪ System rated flow:22L/min
▪ System Max. pressure: 210bar
▪ System working pressure: 180bar
▪ System response frequency: 15~20Hz
▪ System working temperature : 10-60ºC
▪ Cooling type: water coolant
▪ System filtering accuracy: 5um
▪ Motor powerof bending roll: 7.5kwCompressor 4.9.3High voltage AGChydraulic station
▪ System pressure is 21MPa
▪ The system having two sets imported constant pressure variation pump ( save energy and calorific value is small ) and two sets motor from Wannan province (a device equipped with a worker). Each output of pump equipped with an one-way valve which through the pressure oil filter and connecting accumulator then supply oil to the screw-down cylinder on the base. In order to prevent the pump overload, there is a safety electromagnetic relief valve at the outlet used as over pressure protection. In the mean while, this valve can achieve no-load pump start, stop and system unload. Return oil flow back to oil tank through the oil filter tank.
▪ The station also equipped with screwdown cylinder return to the pump unit, connecting accumulator and providing back pressure oil source to screwdown cylinder, the back pressure is 3MPa.
▪ Independent circulation and cooling (plate-type) are guaranteed the clearness and temperature of system oil, and systems reliability.
▪ Hydraulic composed of oil cooler, accumulator, liquid lever thermometer, electric contact thermometer, liquid lever control relays, air cleaner, oil breather filters, oil return filter, high pressure oil filter and other such as hydraulic accessories.
▪ Fuel tank and hydraulic pipe all be made of stainless steel, also independent cyclical filtering cooler are set in to make oil loop, filtering and cool. Avarietyofstorageandbufferingdeviceensured the response speed of system and decreased the vibration. High integrated design reduced the quantity of pipelineandvalves, maximum avoid the leakage. High cleanness(NAS7 level) , excellent stability of pressure and dynamic characteristics ensured total AGC control system had a higher response speed and control precision.
▪ Hydraulic adopted accumulator and constant pressure variable pump, so as to save energy and reduce system heating.
▪ TheuseofelectromagneticReliefValveandpumpinterlockcontrol,realizationofno - loadstartingandstoppInstrument Box ingofthepumpandthisimprovestheservicelifeofthepump.
▪ Electron magnetic valve and other main control valve imported from Mannesmann Rexroth GmbH, there product are reliable.
4.10 Processing Emulsion Lubricating Station
4.11 Thickness Gauge4.12 Thin oil station
▪ Function:responsible for lubricating to reducer, herringbone gear box, front and hind coiling machine.
Thin oil station having functions such as cooler, liquid level indicator, filter system and oil temperature indicator.
▪ System flow rate:125L/min
▪ Motor:4KW 4.13. Electric control system
4.13.1Host control cabinet driver used siemens-6RA80 series DC expansion of governor,suitablefor550KW380Vdrivemotorofmainrolling milldirect currentmotor,controlaccuracycanreach0.1%;flux -weakeningcontrolcanbeachieved, so as to increasethemotorspeedby2-3times. (depending on the motor parameter);equipped with universal circuit, imput choke, expansion of SCR, quick-fuse protection. 4.13.2Coiling control cabinet driver used siemens-6RA80 series DC xpansion of governor, suitable for 250KW 380V DC motor, controlaccuracycanreach0.1%, flux -weakeningcontrolcanbeachieved, so as to increasethemotorspeedby2-3times.(depending on the motor parameter), equipped with universal circuit, imput choke, expansion of SCR, quick-fuse protection, armatureammeterindication, Faultindicatorandresetbuttons.
4.13.3Operation box and general operational desk including the following terms.
a.Main machine and coiling machine all be equipped emergency buttons such as single action, interaction, pros and cons impact, continuous positive and negative operation, general breaker, branch breaker button and so on.
b.Withing the host speed knob, collecting, discharge and tension button.
c.The meters separately indicates host rotational speed, host currents, welding tension etc.
d.Each hydraulic action be controlled by knob.
e.Pressing down the button.5.Responsibilities to both side
Responsibilities scope of acquirer:
1.Responsible for providing power to equipment electric control cabinet within 0.3 meters, providing also all wire cables, line slot and hydraulic pipe runs that needed in installation.
2.Responsible for lifting equipment to the installation location and providing necessary material in debugging including lifting device(50T), steel wire ropes(50T), welding device, water, electricity, lubricating oil, lubrication grease, hydraulic oil, technology lubricate, gear oil and so on.
3.Responsible for making of process lubrication system and circulating water system. (the supplier provide the technical requirements);
4.Responsible for equipment concrete foundation engineering, that including set embedded steel plate, shim steel and wedge steel used during installing, railway, foundation bolt, second-grouting, preserve pipeline groove and slot cover (construction on the basis of the drawing);
5.Arranging members cooperate with technicians from our side including machine installation and debugging, production line installation and lathe testing etc.
6.Provide basic accommodation to debugging personnel.Responsible scope of the supplier:Foundation drawing will be provide within 45 days after the contract is signed. (any dissent, please writing to supplier within 7 days after received the drawing, the drawing will be regard to have confirmed by customer if there is not any written dissent.Providing range of wearing parts and quantity that be equipped to the machine, manufacturer information and so on. Power Supply & Distribution 3.Providing operating instructions of rolling mill, wearing parts list and electrical schematic diagram etc.
4.Sending technician make the installation guidance and device testing after the machine arrived at acquirer's scene.
5.In order to ensure acquirers worker can independently, expertly operation and maintenance, the training to customers is available. After-sales service:
In order to protect customer's legitimate rights and interests,to remove theirs worries, our companydo the following things:Select the best solution, building user service technology files for after-sale tracking service.To ensure the product quality, we tracking, monitor and testing all the process. Moreover, we promise warranty service commitments to customer as the below:The warranty is one year start from our products be confirmed was qualified. Within the warranty, damage parts that non-caused by the user can be free replacement {wearing parts including caused by customer is not within the scope of the warranty. }Respond within 24 hours after received a call or fax from customer's required service. Timely send qualified technology service personnel arrived at the demand equipment used on-side.Customer can purchase parts directly from our plant after the warranty expire. We will arrange technology service when it be needed by the purchaser, this only charge cost and can save your money much
Please note the following:
1. Unmentioned terms in this technical scheme should to solve base on friendly negotiation between our both sides.
2.The technical scheme in two original copies, entry into force after signed and sealed by both parties, attached to the contract and has equal legal effect..

Beforesale:designthesuitablemachinebasedonthespecificdemands

Mediumsale:

1.basedoncustomer'sdemandtooffermoderatequotationproject 2.Acceptcustomerstovisitourfactory

3.Helpcustomerworkoutthescheduleinchina

After-sale:

1.On-sitetrainingpersonnel 2.Appointspecialaftersaleservicestaff,arrivedatthesceneguideclientsinstallationandcommission
Xi'an Weikeduo Electrical & Mechanical Equiment Co., Ltd.
With more than 20 years experience in metallurgicalindustry,The main business scope for the metallurgical machinery, high-speed gear box, hardened gear reducer. High-speed wire rod, bar, special steel rolling mill production line design, production, sales and installation; As well as for the aviation, steel, oil, electricity, coal mining machinery to provide intelligent re-manufacturing laser quenching, welding, cladding supporting processing, surface corrosion and wear-resistant alloy protective processor full set of technology development, services and applications. Crack detection of the equipment and spare parts, CMM measure and Gear detection. Products through the ISO9001 certification, the use of "Hangji" registered trademark of Shaanxi famous brand, with more than 10 patented technology, the establishment of a complete research and development, production and quality assurance system for high-tech enterprises.