CN107433284A - A kind of technological lubrication system optimization of cold continuous rolling high-speed rolling process - Google Patents

A kind of technological lubrication system optimization of cold continuous rolling high-speed rolling process Download PDF

Info

Publication number
CN107433284A
CN107433284A CN201610352171.XA CN201610352171A CN107433284A CN 107433284 A CN107433284 A CN 107433284A CN 201610352171 A CN201610352171 A CN 201610352171A CN 107433284 A CN107433284 A CN 107433284A
Authority
CN
China
Prior art keywords
rolling
strip
speed
temperature
lubrication system
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201610352171.XA
Other languages
Chinese (zh)
Other versions
CN107433284B (en
Inventor
王康健
王欣
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Baoshan Iron and Steel Co Ltd
Original Assignee
Baoshan Iron and Steel Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Baoshan Iron and Steel Co Ltd filed Critical Baoshan Iron and Steel Co Ltd
Priority to CN201610352171.XA priority Critical patent/CN107433284B/en
Publication of CN107433284A publication Critical patent/CN107433284A/en
Application granted granted Critical
Publication of CN107433284B publication Critical patent/CN107433284B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
    • B21B1/24—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process
    • B21B1/28—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process by cold-rolling, e.g. Steckel cold mill
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
    • B21B27/06—Lubricating, cooling or heating rolls
    • B21B27/10—Lubricating, cooling or heating rolls externally
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B28/00—Maintaining rolls or rolling equipment in effective condition
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
    • B21B45/0239—Lubricating

Abstract

The invention discloses a kind of optimization of the technological lubrication system of cold continuous rolling high-speed rolling process, is aggravated by the temperature rise to high-speed rolling process, the decay of working roll roughness, rolls oily leakage, is involved in the corresponding technological lubrication systems optimization of four aspect propositions of velocity perturbation increase；Rolling zone inlet temperature temperature range is determined to ensure that emulsion has optimal a particle angle value and stability, temperature range is to ensure to be less than ROLLING OIL resistance to extreme temperature value in rolling zone；High-speed rolling process working roll roughness operating specification, including upper and lower machine working roll roughness value and rolling mileage is determined；The fluctuation range of high-speed rolling process rolling zone coefficient of internal friction is determined, prevents the generation of self-excited vibration；The saponification number scope of high-speed rolling process emulsion is determined, prevents from rolling the too high influence lubricant effect of oil content in emulsion.The optimization that the present invention is lubricated the cold continuous rolling high-speed rolling process in produce reality has important application value.

Description

A kind of technological lubrication system optimization of cold continuous rolling high-speed rolling process
Technical field
The present invention relates to steel rolling rolling mill practice lubricating regime technical field, more particularly to a kind of cold continuous rolling high-speed rolling The technological lubrication system optimization of process.
Background technology
Strip is the stem product of steel and iron industry, and its production technology level and Mass accuracy alignment target a country Steel and iron industry state-of-art.Cold-rolled steel sheet with its excellent processability, be widely used in automobile, household electrical appliances, Each main department of the national economy such as light industry, building, turn into a kind of important industrial raw materials.
Along with the development of economic society, growth in the living standard, the demand of Strip is being stepped up.But by building Vertical new production unit, which improves yield, need to put into substantial amounts of manpower and materials, and the mill speed by increasing existing unit improves production Amount will not then increase production cost substantially, therefore need the process matched therewith measure of primary study tandem mills high-speed rolling process. And the technological lubrication system of wherein cold continuous rolling high-speed rolling process is one of key issue.In cold continuous rolling at a high speed In the operation of rolling, because mill speed is very high, working roll roughness decay aggravation, hydraulic tube piece work in the operation of rolling result in Cause as environmental degradation roll oil leak into emulsification fluid circulation and meanwhile the operation of rolling bulk temperature rise, the acceleration and deceleration stage It is involved in velocity perturbation increase.Therefore, to ensure that tandem mills in the steady production of high-speed rolling process, need to be directed to high-speed rolling The issuable technological lubrication problem of process, propose the optimization of high-speed rolling process lubricating regime.
The content of the invention
In order to avoid the issuable technological lubrication problem of high-speed rolling process, the invention provides a kind of cold continuous rolling The technological lubrication system optimization of high-speed rolling process, by being raised to the temperature of high-speed rolling process, working roll roughness decays Aggravate, roll oil leakage, be involved in the corresponding technological lubrication system optimization of proposition in terms of velocity perturbation increases four, and on this basis Give corresponding solution.
The technical solution adopted in the present invention is：
A kind of technological lubrication system optimization of cold continuous rolling high-speed rolling process, including cold continuous rolling high-speed rolling process temperature The optimization of degree rise technological lubrication system, the optimization of operation of rolling working roll roughness decay aggravation technological lubrication system, the operation of rolling Roll the optimization of oil leakage technological lubrication system, the operation of rolling is involved in velocity perturbation increase technological lubrication system optimization.
The rise technological lubrication system optimization of operation of rolling temperature：According to the granularity (P.S.I) under emulsion different temperatures With stability (E.S.I), it is determined that rolling zone porch optimum temperature value；Whether lost according to ROLLING OIL at a temperature of different rolling zones Effect, it is determined that the Limit temperature value in rolling zone.
The decay aggravation technological lubrication system optimization of operation of rolling working roll roughness：By establishing work roll surface roughness It is thin to see wear model, as the increase of working roll military service mileage, work roll surface roughness decline in the simulation calculation operation of rolling Subtract rule.By establishing cold rolling of strip steel process interface friction, lubrication model, during simulation result determines high-speed rolling, The scope of work roll surface roughness.The use of working roll roughness during high-speed rolling has been obtained using above-mentioned two model Specification, it specify that the working roll military service mileage of machine roughness value and working roll up and down.
The operation of rolling rolls oil leakage technological lubrication system optimization：Due to breast caused by milling train oil leak possibility in the operation of rolling Change the change Ye Hui influence of rolled area lubricating status of liquid concentration, and determine the stability of high-speed rolling process.By being rolled in experiment Rolling lubrication experiment is carried out on machine, it is determined that concentration of emulsion used changes the affecting laws to rolling zone lubricating status, specify that height The scope of concentration of emulsion used during speed rolling.
The operation of rolling is involved in velocity perturbation increase technological lubrication system optimization：By establishing cold rolling of strip steel process interface friction Lubrication model, simulation analysis are involved in affecting laws of the change to rolling zone lubricating status of speed, and determine on this basis Percentage speed variation during cold continuous rolling high-speed rolling, to ensure that the fluctuation of rolling zone coefficient of internal friction excessive will not cause self-excitation Vibration.
As the improvement of above-mentioned technical proposal, to determine rolling zone porch optimum temperature value, the rise of mill speed must So cause friction aggravation in rolling zone, cause increasing for frictional heat, at the same in the unit interval metal plastic deformation amount increase, Plastic deformation heat production in the unit interval can be caused to increase, the rise of operation of rolling temperature can be caused.Thus mill speed liter is established Operation of rolling temperature calculation models after height, it is specific as follows：
The surface temperature of strip is represented by temperature rise calculation formula in roll gap
T in formulaBiFor strip the i-th section surface temperature；TEFor strip inlet temperature；QviFor the deformation heat of the i-th section strip steel；QRi For the frictional heat of the i-th section strip steel；QLiFor the heat of the i-th section strip steel heat conduction loss；For the coefficient of heat conduction of strip；ρBFor The density kg/m of strip,
I, frictional heat calculation formula
QRiFor frictional heat, J caused by i-th section；For the tension force of vertical strip, KN；μ is friction factor；hATo export band Steel thickness, mm；hiFor the i-th section strip steel thickness, mm；vEFor advancing slip speed,
In formulaFor the hot specific volume of strip, kgm/ (kg DEG C)；λBFor the coefficient of heat conduction of strip；bBIt is absolute for strip Absorb hot coefficient；bwFor the hot coefficient of roll absolute absorption；cwWFor the hot specific volume of roll, kgm/ (kg DEG C)；λWFor roll The coefficient of heat conduction；ρWFor the density of roll, kg/m；ρBFor the density kg/m, Q of stripRBiFor frictional heat caused by the i-th section strip steel, J；
II, strip plastic deformation heat calculate
K in formulafiFor the increased intensity of strip；I, j are the regional number of division；imaxFor maximum zoning number；hEFor outlet Belt steel thickness mm, hATo export belt steel thickness, mm；hiFor the i-th section strip steel thickness, mm；dhiFor the i-th section strip steel amounts of thickness variation, mm；QvjFor shape heat in side caused by jth section strip steel；
III, strip distribute heat Calculation
T in formulaKFor time of contact, s；Δ T is temperature variation, DEG C；α is that the temperature difference influences coefficient；bBFor strip absolute absorption Hot coefficient；bwFor the hot coefficient of roll absolute absorption；K is contact coefficient.
As the improvement of above-mentioned technical proposal, to determine the limiting temperature of ROLLING OIL failure in high-speed rolling process rolling zone Value, first three Roll-gap positions of fixed milling train, heating furnace where strip is heated to higher temperature, and is incubated 10 minutes respectively, Strip is then taken out to be rolled, and three passages pressure that every piece of belt steel rolling is all determined, and measure and rolled per a time Belt steel thickness afterwards, so as to record analysis, determine ROLLING OIL invalid temperature.
As the improvement of above-mentioned technical proposal, using Cellular Automaton Theory to roll wear Analysis of Failure Mechanism On the basis of, the local transitions such as fatigue wear, the abrasive wear of roughened contacting surface rule is formulated, further determines that simulation algorithm, It is programmed using MATLAB language, draws simulation result.
As the improvement of above-mentioned technical proposal, cold rolling of strip steel process interface friction, lubrication model is established, the model will roll Inlet region, deformed area and outlet area are divided into, wherein entrance divides into full film inlet region and mixing inlet region, is compiled using VB language Simulated calculation has been write, different rolling temperatures are obtained by simulation calculation, are involved in rolling zone friction under speed and roughness The size of coefficient, obtain rolling temperature, be involved in the affecting laws of speed and roughness to rolling lubrication state.
Beneficial effects of the present invention：The technological lubrication system optimization of a kind of cold continuous rolling high-speed rolling process, by height The temperature of speed rolling process, which raises, the decay of working roll roughness aggravates, roll oil leakage, is involved in four aspects of velocity perturbation increase carries Go out corresponding technological lubrication system；Rolling zone inlet temperature temperature range is determined to ensure that emulsion has optimal granularity It is worth (P.S.I) and stability (E.S.I), temperature range is to ensure to be less than ROLLING OIL resistance to extreme temperature value in rolling zone；Height is determined Speed rolling process working roll roughness operating specification, including upper and lower machine working roll roughness value and rolling mileage；Determine at a high speed The fluctuation range of operation of rolling rolling zone coefficient of internal friction, prevents the generation of self-excited vibration；It is determined that high-speed rolling process emulsifies The saponification number scope of liquid, prevent from rolling the too high influence lubricant effect of oil content in emulsion.
Brief description of the drawings
Fig. 1 is rolling zone temperature rise with mill speed change curve；
Fig. 2 is higher rolling zone temperature whether there is the contrast of lubrication and rolling belt steel thickness；
Fig. 3 is roll wear overall calculation flow chart；
Fig. 4 is fatigue wear computing block diagram；
Fig. 5 is abrasive wear computing block diagram；
Fig. 6 is that Cellular Automata work roll surface carefully sees wear results；
Fig. 7 is roll-force with concentration of emulsion used changing rule；
Fig. 8 is rolling zone greasing schematic diagram；
Fig. 9 is rolling zone oil film thickness distribution curve under different mill speeds；
Figure 10 is lubrication model calculating process flow chart；
Figure 11 is rolling zone coefficient of friction distribution curve under different mill speeds；
The time domain response of system when Figure 12 is continuous raising speed；
The time domain response of system when Figure 13 is interruption raising speed；
Embodiment
In order that the technical means, the inventive features, the objects and the advantages of the present invention are easy to understand, tie below Conjunction is specifically illustrating, and the present invention is expanded on further.
A kind of when it is implemented, technological lubrication system optimization of cold continuous rolling high-speed rolling process, it is determined that high-speed rolling During temperature rise, working roll roughness decay aggravation, be involved in velocity perturbation increase and roll oil and reveal issuable shadow The problem of ringing technological lubrication, and corresponding countermeasuress and corresponding technological lubrication solution technology are proposed on this basis.
1st, high-speed rolling process temperature rise technological lubrication system optimization
Utilize the granularity (P.S.I) and stability (E.S.I) of experimental study emulsion at different temperatures, it is determined that roll Area porch processed optimum temperature value；Whether ROLLING OIL fails at a temperature of have studied different rolling zones using rolling experiment, it is determined that Limit temperature value in rolling zone.Using above-mentioned two value as control targe value, by controlling emulsion fountain height and tune between frame Whole emulsion temperature value ensures during high-speed rolling temperature value, high-speed rolling process lubrication in rolling zone porch and rolling zone Meet to require.
To determine rolling zone porch optimum temperature value, the rise of mill speed, friction in rolling zone is necessarily caused to add Play, causes increasing for frictional heat, at the same in the unit interval metal plastic deformation amount increase, plasticity in the unit interval can be caused Deformation heat production increases, and can cause the rise of operation of rolling temperature.Thus operation of rolling temperature computation after mill speed raises is established Model, it is specific as follows：
The surface temperature of strip is represented by temperature rise calculation formula in roll gap
T in formulaBiFor strip the i-th section surface temperature；TEFor strip inlet temperature；QviFor the deformation heat of the i-th section strip steel；QRi For the frictional heat of the i-th section strip steel；QLiFor the heat of the i-th section strip steel heat conduction loss；For the coefficient of heat conduction of strip；ρBFor The density kg/m of strip,
I, frictional heat calculation formula
QRiFor frictional heat, J caused by i-th section；For the tension force of vertical strip, KN；μ is friction factor；hATo export band Steel thickness, mm；hiFor the i-th section strip steel thickness, mm；vEFor advancing slip speed,
In formulaFor the hot specific volume of strip, kgm/ (kg DEG C)；λBFor the coefficient of heat conduction of strip；bBIt is absolute for strip Absorb hot coefficient；bwFor the hot coefficient of roll absolute absorption；cwWFor the hot specific volume of roll, kgm/ (kg DEG C)；λWFor roll The coefficient of heat conduction；ρWFor the density of roll, kg/m；ρBFor the density kg/m, Q of stripRBiFor frictional heat caused by the i-th section strip steel, J；
II, strip plastic deformation heat calculate
K in formulafiFor the increased intensity of strip；I, j are the regional number of division；imaxFor maximum zoning number；hEFor outlet Belt steel thickness mm, hATo export belt steel thickness, mm；hiFor the i-th section strip steel thickness, mm；dhiFor the i-th section strip steel amounts of thickness variation, mm；QvjFor shape heat in side caused by jth section strip steel；
III, strip distribute heat Calculation
T in formulaKFor time of contact, s；Δ T is temperature variation, DEG C；α is that the temperature difference influences coefficient；bBFor strip absolute absorption Hot coefficient；bwFor the hot coefficient of roll absolute absorption；K is contact coefficient.
Mill speed rise, which is calculated, by above-mentioned model causes in each frame rolling zone the elevated result of temperature such as Shown in Fig. 1, in the case where current cooling condition is constant, all rise as mill speed raises each temperature in GANTRY value, And unit rolling zone temperature value rising in downstream can be superimposed each unit temperature rise value in upstream, it can thus be appreciated that 4# and 5# temperature in GANTRY value rises At most, thus need to increase to ensure that rolling zone porch emulsion has optimal granularity (P.S.I) and stability (E.S.I) Between big 3/4 frame between 4/5 frame emulsion fountain height, so as to increase strip cooling effect, and the increase of emulsion fountain height takes Certainly size is raised in mill speed.
To determine the Limit temperature value of ROLLING OIL failure in high-speed rolling process rolling zone, carried out using rolling experiment true Fixed, specific experiment process is：Three Roll-gap positions of fixed milling train first, heating furnace where strip is heated to higher temperature, and 10 minutes are incubated respectively, strip is then taken out and is rolled, and three passages pressure that every piece of belt steel rolling is all determined, and Measurement rolls rear belt steel thickness per a time, so as to record analysis, determines ROLLING OIL invalid temperature.As shown in Figure 2, rolling zone is worked as When temperature is increased to 200 DEG C, now ROLLING OIL weakens to rolling zone lubricant effect, there is lubrication and rolling outlet belt steel thickness increase, Inference section rolls oil particles due to high temperature failure, therefore it is required that temperature value should not be greater than in rolling zone during high-speed rolling 200℃。
2nd, high-speed rolling process working roll roughness decay aggravation technological lubrication system optimization
Wear model is carefully seen by establishing work roll surface roughness, as working roll is on active service in the simulation calculation operation of rolling The increase of mileage, the attenuation law of work roll surface roughness；Simultaneously by establishing cold rolling of strip steel process interface friction, lubrication mould Type, during simulation result determines high-speed rolling, the scope of work roll surface roughness.Obtained using above-mentioned two model The operating specification of working roll roughness during high-speed rolling, specify the military service of working roll machine roughness value and working roll up and down Mileage.
The process worn using Cellular Automaton Theory to roll for cold rolling is emulated, and is to roll wear failure mechanism On the basis of analysis, the local transitions such as fatigue wear, the abrasive wear of roughened contacting surface rule is formulated, is rolled as Fig. 3 gives Roller wears overall calculation flow chart, and further determines that simulation algorithm, and as Fig. 4 gives fatigue wear computing block diagram, Fig. 5 is provided Abrasive wear computing block diagram, is programmed using MATLAB language, draws simulation result, as Fig. 6 gives cellular automata Simulation work roller surface carefully sees wear results, for whole simulation analysis, is carried out according to the process of abrasion.Determine working roll Operating specification is as shown in table 1.
The working roll operating specification of table 1
3rd, high-speed rolling process rolls oil leakage technological lubrication system optimization
Due to the change Ye Hui influence of rolled area lubrication of concentration of emulsion used caused by milling train oil leak possibility in the operation of rolling State, and determine the stability of high-speed rolling process.By carrying out rolling lubrication experiment on experimental mill, it is determined that emulsion Change in concentration specify that the scope of concentration of emulsion used during high-speed rolling to the affecting laws of rolling zone lubricating status.Using Experimental study concentration of emulsion used changes the influence to rolling lubrication state, it is determined that the concentration range of emulsion.
Specific experiment process is as follows：Initial belt steel thickness 0.51mm, it will batch and heated in case and to be incubated 1 small where strip When, pressure is set, tension force before and after setting, mill speed is determined, determines work roll temperature, rolled, during continuous rolling, Change concentration of emulsion used, concentration of emulsion used is sequentially reduced, observe rolling lubrication state.Fig. 7 gives roll-force with emulsion Change in concentration rule, affecting laws of the sprinkling concentration of emulsion used to rolling zone lubricating status are obtained by experiment, it is determined that spray Spill the concentration range value of emulsion.
4th, high-speed rolling process is involved in velocity perturbation increase technological lubrication system optimization
By establishing cold rolling of strip steel process interface friction, lubrication model, with reference to Fig. 8 rolling zone greasing schematic diagrames, emulation The affecting laws for being involved in the change of speed to rolling zone lubricating status are analyzed, and determine cold continuous rolling at a high speed on this basis Operation of rolling medium velocity rate of change, to ensure that the fluctuation of rolling zone coefficient of internal friction excessive will not cause self-excited vibration.
Establish cold rolling of strip steel process interface friction, lubrication model, the model by rolling divide into inlet region, deformed area and Outlet area, wherein entrance divide into full film inlet region and mixing inlet region, and there are low speed and at a high speed two kinds of processing methods in deformed area, to the greatest extent Amount ensures that model considers the different working condition of rolling zone comprehensively, to realize in terms of to lubrication problem in larger velocity interval Calculate.On the basis of cold rolling of strip steel lubrication model is established, simulated calculation is write using VB language, lubrication model calculated Journey flow chart as shown in figure 9, and demonstrate the correctness of the calculation procedure, the program can to the oil film pressure in whole deformation area, Oil film thickness, coefficient of friction, micro-bulge pressure and Studies On Contacts of Rough Surfaces than etc. distribution carry out calculating drawing, simulation result is as schemed Shown in 10 and 11, as seen from the figure in operation of rolling velocity variations, oil film thickness and coefficient of friction change are violent in rolling zone, and Thus the generation of operation of rolling self-excited vibration may be caused.Different rolling temperatures can be calculated in the model, be involved in speed and The size of rolling zone coefficient of friction under roughness, obtain rolling temperature, be involved in speed and roughness to rolling lubrication state Affecting laws.
Therefore, the present invention have studied the influence that different raising speed modes milling train occur self-excited vibration, using the 5th frame as analysis Object is under initial displacement or velocity disturbance, when mill speed (Vr=21m/s) exceedes neutrality speed (Vrc=19.89m/ When s), system will produce the unstable Vibration of diversity, and time domain response is as shown in figure 12.It is changed to by continuous raising speed after being interrupted raising speed, Unstable Vibration will not occur with system under operating mode, time domain response is as shown in figure 13.Compare Figure 12 and Figure 13 is visible, take interruption to rise The measure of speed can realize effective suppression to diversity vibration.This be due to reach in boosting velocity procedure Instability speed it Before, the original state such as system vibration displacement and speed amount gradually restrains zero, therefore even above critical when reaching critical speed All without generation dynamic response during speed.The present invention is applied to certain tandem mills of factory 1420, solves the unit and rolls at present The problem of speed is relatively low, on the basis of steady production and product quality is ensured, make the average mill speed of the unit by original 1200m/min improve to current 1345m/min.
The technological lubrication system optimization of cold continuous rolling high-speed rolling process of the present invention, it is determined that rolling zone inlet temperature temperature Scope has optimal a particle angle value (P.S.I) and stability (E.S.I) to ensure emulsion, and temperature range is with true in rolling zone Guarantor is less than ROLLING OIL resistance to extreme temperature value；High-speed rolling process working roll roughness operating specification, including the work of upper and lower machine is determined Roller roughness value and rolling mileage；The fluctuation range of high-speed rolling process rolling zone coefficient of internal friction is determined, prevents from exciting Dynamic generation；The saponification number scope of high-speed rolling process emulsion is determined, prevents from rolling the too high influence profit of oil content in emulsion Sliding effect.
General principle, principal character and the advantages of the present invention of the present invention has been shown and described above.The technology of the industry Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the simply explanation described in above-described embodiment and specification is originally The principle of invention, various changes and modifications of the present invention are possible without departing from the spirit and scope of the present invention, these changes Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its Equivalent defines.

Claims (5)

  1. A kind of 1. technological lubrication system optimization of cold continuous rolling high-speed rolling process, it is characterised in that：Including operation of rolling temperature The optimization of rise technological lubrication system, the optimization of operation of rolling working roll roughness decay aggravation technological lubrication system, the operation of rolling are rolled The optimization of oil leakage technological lubrication system, the operation of rolling are involved in velocity perturbation increase technological lubrication system optimization,
    The operation of rolling temperature rise technological lubrication system optimization：According to the granularity under emulsion different temperatures and stably Property, rolling zone porch optimum temperature value is determined, whether is failed according to ROLLING OIL at a temperature of different rolling zones, is determined in rolling zone Limit temperature value；
    The operation of rolling working roll roughness decay aggravation technological lubrication system optimization：Work roll surface roughness is established carefully to see Wear model, as the increase of working roll military service mileage, the decay of work roll surface roughness are advised in the simulation calculation operation of rolling Rule, establishes cold rolling of strip steel process interface friction, lubrication model, work roll surface is coarse during simulation calculation determines high-speed rolling The scope of degree；
    The operation of rolling rolls oil leakage technological lubrication system optimization：Milling train oil leak causes the change of concentration of emulsion used also to influence Rolling zone lubricating status, it is determined that concentration of emulsion used changes the affecting laws to rolling zone lubricating status, specify that high-speed rolling During concentration of emulsion used scope；
    The operation of rolling is involved in velocity perturbation increase technological lubrication system optimization：Establish cold rolling of strip steel process interface friction, lubrication Model, simulation analysis are involved in affecting laws of the change to rolling zone lubricating status of speed, determine cold continuous rolling high-speed rolling mistake Journey medium velocity rate of change, to ensure that the fluctuation of rolling zone coefficient of internal friction excessive will not cause self-excited vibration.
  2. 2. optimizing according to a kind of technological lubrication system of cold continuous rolling high-speed rolling process described in claim 1, its feature exists In：The operation of rolling temperature rise technological lubrication system optimization, establishes operation of rolling temperature computation mould after mill speed rise Type, it is specific as follows：
    The surface temperature of strip is represented by temperature rise calculation formula in roll gap
    T in formulaBiFor strip the i-th section surface temperature；TEFor strip inlet temperature；QviFor the deformation heat of the i-th section strip steel；QRiFor i-th The frictional heat of section strip steel；QLiFor the heat of the i-th section strip steel heat conduction loss；For the coefficient of heat conduction of strip；ρBFor strip Density kg/m,
    I, frictional heat calculation formula
    QRiFor frictional heat, J caused by i-th section；For the tension force of vertical strip, KN；μ is friction factor；hAIt is thick for outlet strip Degree, mm；hiFor the i-th section strip steel thickness, mm；vEFor advancing slip speed,
    In formulaFor the hot specific volume of strip, kgm/ (kg DEG C)；λBFor the coefficient of heat conduction of strip；bBFor strip absolute absorption Hot coefficient；bwFor the hot coefficient of roll absolute absorption；cwWFor the hot specific volume of roll, kgm/ (kg DEG C)；λWPassed for the heat of roll Lead coefficient；ρWFor the density of roll, kg/m；ρBFor the density kg/m, Q of stripRBiFor frictional heat, J caused by the i-th section strip steel；
    II, strip plastic deformation heat calculate
    K in formulafiFor the increased intensity of strip；I, j are the regional number of division；imaxFor maximum zoning number；hETo export strip Thickness mm, hATo export belt steel thickness, mm；hiFor the i-th section strip steel thickness, mm；dhiFor the i-th section strip steel amounts of thickness variation, mm；Qvj For shape heat in side caused by jth section strip steel；
    III, strip distribute heat Calculation
    T in formulaKFor time of contact, s；Δ T is temperature variation, DEG C；α is that the temperature difference influences coefficient；bBIt is for strip absolute absorption heat Number；bwFor the hot coefficient of roll absolute absorption；K is contact coefficient.
  3. 3. optimizing according to a kind of technological lubrication system of cold continuous rolling high-speed rolling process described in claim 1, its feature exists In：The operation of rolling temperature rise technological lubrication system optimization, to determine ROLLING OIL failure in high-speed rolling process rolling zone Limit temperature value, three Roll-gap positions of milling train fixed first, heating furnace where strip is heated to higher temperature, and protect respectively Temperature 10 minutes, then takes out strip and is rolled, and three passages pressure that every piece of belt steel rolling is all determined, and measures every A time rolls rear belt steel thickness, so as to record analysis, determines ROLLING OIL invalid temperature.
  4. 4. optimizing according to a kind of technological lubrication system of cold continuous rolling high-speed rolling process described in claim 1, its feature exists In：The operation of rolling working roll roughness decay aggravation technological lubrication system optimization, using Cellular Automaton Theory to rolling On the basis of the analysis of roller wear failure mechanism, the local transitions such as fatigue wear, the abrasive wear of roughened contacting surface rule are formulated Then, simulation algorithm is further determined that, is programmed using MATLAB language, draws simulation result.
  5. 5. optimizing according to a kind of technological lubrication system of cold continuous rolling high-speed rolling process described in claim 1, its feature exists In：The operation of rolling is involved in velocity perturbation increase technological lubrication system optimization, establishes cold rolling of strip steel process interface friction, lubrication Model, simulated calculation is write using VB language, simulation calculation obtains different rolling temperatures, is involved under speed and roughness The size of rolling zone coefficient of friction, obtain rolling temperature, be involved in the affecting laws of speed and roughness to rolling lubrication state.
CN201610352171.XA 2016-05-25 2016-05-25 A kind of technological lubrication system optimization method of cold continuous rolling high-speed rolling process Active CN107433284B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610352171.XA CN107433284B (en) 2016-05-25 2016-05-25 A kind of technological lubrication system optimization method of cold continuous rolling high-speed rolling process

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610352171.XA CN107433284B (en) 2016-05-25 2016-05-25 A kind of technological lubrication system optimization method of cold continuous rolling high-speed rolling process

Publications (2)

Publication Number Publication Date
CN107433284A true CN107433284A (en) 2017-12-05
CN107433284B CN107433284B (en) 2019-03-29

Family

ID=60453300

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610352171.XA Active CN107433284B (en) 2016-05-25 2016-05-25 A kind of technological lubrication system optimization method of cold continuous rolling high-speed rolling process

Country Status (1)

Country Link
CN (1) CN107433284B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108838211A (en) * 2018-06-29 2018-11-20 首钢京唐钢铁联合有限责任公司 A kind of concentration of emulsion used optimization method of cold continuous rolling process
CN109374522A (en) * 2018-12-07 2019-02-22 长沙理工大学 A kind of test method of drawing deformation coefficient of friction
CN109883944A (en) * 2019-02-27 2019-06-14 长沙理工大学 A kind of test device of drawing deformation coefficient of friction
JP7326594B2 (en) 2019-09-10 2023-08-15 プライメタルズ・テクノロジーズ・オーストリア・ゲーエムベーハー Cold rolling of rolled stock in a rolling mill train with multiple rolling mill stands

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101025767A (en) * 2007-03-21 2007-08-29 燕山大学 Friction coefficient forecasting and setting method for cold-continuous-rolling high-speed rolling process
US20090282884A1 (en) * 2005-09-02 2009-11-19 Hartmut Pawelski Method for Lubricating and Cooling Rollers and Metal Strips On Rolling In Particular On Cold Rolling of Metal Strips
CN103611732A (en) * 2013-11-12 2014-03-05 燕山大学 Optimization method of technological lubrication system taking galling prevention as objective for tandem cold mill
CN103722022A (en) * 2013-12-29 2014-04-16 北京首钢自动化信息技术有限公司 Friction coefficient model optimizing system and method in rolling process
CN103934291A (en) * 2013-01-21 2014-07-23 宝山钢铁股份有限公司 Lubricating method for rolling of stainless steel products on tandem cold rolling mill
CN105312321A (en) * 2014-07-31 2016-02-10 宝山钢铁股份有限公司 Method for optimizing technological lubrication system of cold continuous rolling unit

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090282884A1 (en) * 2005-09-02 2009-11-19 Hartmut Pawelski Method for Lubricating and Cooling Rollers and Metal Strips On Rolling In Particular On Cold Rolling of Metal Strips
CN101025767A (en) * 2007-03-21 2007-08-29 燕山大学 Friction coefficient forecasting and setting method for cold-continuous-rolling high-speed rolling process
CN103934291A (en) * 2013-01-21 2014-07-23 宝山钢铁股份有限公司 Lubricating method for rolling of stainless steel products on tandem cold rolling mill
CN103611732A (en) * 2013-11-12 2014-03-05 燕山大学 Optimization method of technological lubrication system taking galling prevention as objective for tandem cold mill
CN103722022A (en) * 2013-12-29 2014-04-16 北京首钢自动化信息技术有限公司 Friction coefficient model optimizing system and method in rolling process
CN105312321A (en) * 2014-07-31 2016-02-10 宝山钢铁股份有限公司 Method for optimizing technological lubrication system of cold continuous rolling unit

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108838211A (en) * 2018-06-29 2018-11-20 首钢京唐钢铁联合有限责任公司 A kind of concentration of emulsion used optimization method of cold continuous rolling process
CN109374522A (en) * 2018-12-07 2019-02-22 长沙理工大学 A kind of test method of drawing deformation coefficient of friction
CN109883944A (en) * 2019-02-27 2019-06-14 长沙理工大学 A kind of test device of drawing deformation coefficient of friction
JP7326594B2 (en) 2019-09-10 2023-08-15 プライメタルズ・テクノロジーズ・オーストリア・ゲーエムベーハー Cold rolling of rolled stock in a rolling mill train with multiple rolling mill stands

Also Published As

Publication number Publication date
CN107433284B (en) 2019-03-29

Similar Documents

Publication Publication Date Title
CN107433284A (en) A kind of technological lubrication system optimization of cold continuous rolling high-speed rolling process
Fujita et al. Dynamic control of lubrication characteristics in high speed tandem cold rolling
CN100550029C (en) Friction coefficient forecasting and establishing method in the cold-continuous-rolling high-speed rolling process
CN106391725B (en) One kind is suitable for cold-rolled process draught pressure and changes forecasting procedure with mill speed
EP3804871B1 (en) Emulsion flow optimization method for suppressing vibration of continuous cold rolling mill
CN104624669A (en) Roughness predication and control method for belt steel produced by electric spark textured working roller
Fujita et al. Estimation model of plate-out oil film in high-speed tandem cold rolling
CN104942019A (en) Automatic control method for width of steel strips during cold rolling
CN102847721A (en) Method for determining thermal crown of hot rolled strip roller
Lu et al. Effect of minimum friction coefficient on vibration stability in cold rolling mill
Song et al. Study on mathematical model of work roll wear in skin-pass rolling of hot steel strip
CN107433288B (en) It is a kind of based on advancing slip milling train Convenient stable criterion
Cao et al. Vibration analysis and numerical simulation of rolling interface during cold rolling with unsteady lubrication
CN104858245B (en) Rough-rolling head warping and bending control method for hot continuous rolling mill based on multiple heating furnaces
CN103990653B (en) Entry temperature at finishing accuracy at target method of assuring
CN109926456B (en) Rolling force forecasting method in mixed lubrication state
CN103521529A (en) Quantized lubricating method in rolling process of magnesium alloy sheet materials
CN105855298B (en) A kind of high-precision boron-containing steel hot-rolling draught pressure computational methods
Liu et al. Hydrodynamic analysis of partial film lubrication in the cold rolling process
Radionova et al. Studies of influence of process parameters on the strain rate at high-speed wire drawing
Xia et al. Evolution on topography of textured work rolls and steel strips during cold rolling and temper rolling
Dong et al. Spalling prevention and wear improvement of rolls in steel strip hot-rolling process
CN105583238B (en) A kind of Hot Strip Width Forecasting Methodology
CN106807757A (en) It is suitable for the roll surface roughness optimization of cold continuous rolling process with roller method
CN104096712A (en) Using method of high-speed steel roll on Steckel mill

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant