CN106475730A - A kind of roll mill supporting surface on-line machining method - Google Patents
A kind of roll mill supporting surface on-line machining method Download PDFInfo
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- CN106475730A CN106475730A CN201510540157.8A CN201510540157A CN106475730A CN 106475730 A CN106475730 A CN 106475730A CN 201510540157 A CN201510540157 A CN 201510540157A CN 106475730 A CN106475730 A CN 106475730A
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- bearing
- breast roll
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P6/00—Restoring or reconditioning objects
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Abstract
A kind of online restorative procedure of hot-continuous-rolling strip steel roll mill bearing-surface, including:Step one, design and manufacture special crossbeam milling head device (4) of mobile boring and milling lathe (3);Step 2, in framework memorial archway (1) window, build reparation operation platform (2);Step 3, portable boring and milling lathe (3) are pushed fixation on operation platform (2);Step 4, special crossbeam milling head device (4) are lifted to the Y-direction column guide rail saddle of portable boring and milling lathe (3), adjustment special crossbeam milling head device (4) extension elongation is to the range of work;Step 5, the plane to corrosion, wear on breast roll bearing-surface and key way surface carry out Roughing and fine machining.According to the inventive method, rolling-mill housing memorial archway breast roll bearing-surface successful implementation can be repaired online, extend the service life of breast roll bearing-surface, reduce the frequency that breast roll bearing-surface repeats to repair, this method implementation process is convenient, reliable, short construction period, high safety, repair high precision, the low advantage of the cost of overhaul.
Description
Technical field
The invention belongs to milling equipment technical field, in particular it relates to a kind of produce for hot-continuous-rolling strip steel
The on-line machining method of milling train unit on line, more particularly it relates to a kind of be used for hot-continuous-rolling strip steel producing line
Upper milling train
The roll mill supporting surface on-line machining method of unit.
Background technology
For hot-continuous-rolling strip steel producing line, milling train unit is one of most critical equipment.
The milling train unit of hot-continuous-rolling strip steel producing line is mainly by rolling-mill housing memorial archway, upper working rolls and lower working rolls system, upper lower support
Roller system, in front and back mechanical-hydraulic pressure, breast roll system, the composition such as bottom guide and high pressure dephosphorization collector on gateway.
Wherein, framework memorial archway is used for installing the roller system of rolled slab and each position adjusting apparatus etc., therefore, frame board
Larger roll-force must be born in mill, it is necessary to have enough strength and stiffness.
However, in the operation of rolling, as the hot continuous rolling operating mode of hot-continuous-rolling strip steel producing line is very severe, example
Such as, roll passes through to produce larger impulsive force to framework memorial archway during bearing block, meanwhile, rolling cooling water runs into red
Bright slab rapid atomization, can spray to surrounding entrainment of the croci come off from steel slab surface, etc..
So as to because being affected by the impacting of roll-force, cooling water corrosion and oxidation dust abrasive particle etc., cause frame board
Mill window rolling stress surface, framework memorial archway bottom surface, in front and back breast roll bearing-surface etc. different degrees of corruption all occurs
Erosion abrasion.
After framework memorial archway key position occurs above-mentioned corrosive wear situation, following situations can be caused to occur:
1. rolling-mill housing is difficult to effective control with roll chock gap, and thus rolling-mill housing occurs often and roll
Roll bearing seat fit clearance exceedes management limiting value phenomenon, so as to cause to rush frame during milling train again
Hit power to greatly increase, accelerate the abrasion of frame working surface.In addition, rolling-mill housing and roll chock gap
Increase be also degrading the condition of work of mill main drive system, increase main transmission vibratory impulse, steel billet is nipped
When be susceptible to skidding, component of machine to main transmission and stand motor also all cause certain
Infringement.
2., before and after after breast roll bearing-surface corrosive wear, cause breast roll working surface rolling absolute altitude to decline, and
The bearing surface degree of wear is inconsistent, breast roll two end axles bearing inner bearing Frequent Troubles in the operation of rolling, rolling mark
Nose, whipping phenomenon before and after slab can be increased after high reduction, directly influence control and the strip of final plate shape
Surface quality.
Due to hot tandem rolling mill frame key position stress surface corrosive wear phenomenon be rolling working condition and produce
, corrosive wear amount can only be controlled within the specific limits at present, but corrosive wear cannot thoroughly be eliminated.
In sum, it can be seen that through cycle production run, after its corrosive wear amount reaches certain value, must
Framework memorial archway must be repaired, with restorer precision and function, meet rolling equipment required precision.Using
The online method that repairs is repaired, i.e. using the installation of Portable movable boring and milling machine, answered a pager's call to be repaired after adjusting
Carry out original place to repair as a difficult problem in frame window.
Content of the invention
For solving above-mentioned technical problem, it is an object of the invention to:
A kind of online restorative procedure of hot-continuous-rolling strip steel roll mill bearing-surface is provided, with the method for the present invention
Rolling-mill housing memorial archway breast roll bearing-surface successful implementation can be repaired online.Method of the present invention implementation process is convenient,
Reliable, short construction period, high safety, high precision is repaired, the cost of overhaul is low.
Technical scheme is as follows:
A kind of online restorative procedure of hot-continuous-rolling strip steel roll mill bearing-surface, it is characterised in that
Methods described is comprised the steps of:
Step one, according to hot-continuous-rolling strip steel rolling-mill housing and breast roll bearing-surface version and field working conditions,
CAD and simulated condition environment space attitude arrangement, design and manufacture the special of mobile boring and milling lathe 3
With crossbeam milling head device 4;
Step 2, reparation operation platform 2 is built in 1 window of framework memorial archway, with the base plane of framework memorial archway 1
On the basis of, operation platform 2 is directly arranged at the upper plane of 1 bottom oil cylinder of framework memorial archway, to ensure operation platform
Strength and stiffness;
Step 3, portable boring and milling lathe 3 is pushed in framework memorial archway window and fixation is on operation platform 2, school
Positive movable type boring and milling machine bed guide rail " X ", the levelness of " Y " both direction and perpendicularity, X is to finger in figure lathe
Lathe bed moves forward and backward direction, and Y-direction refers to that in figure machine pillar moves up and down direction, make lathe X to lathe bed with processed
Face is parallel;
Step 4, the Y-direction column guide rail saddle special crossbeam milling head device 4 lifted to portable boring and milling lathe 3
On, special 4 extension elongation of crossbeam milling head device is adjusted to the range of work, crossbeam is installed in the cantilever fulcrum of crossbeam
Support auxiliary support frame;
Step 5, the plane to corrosion, wear on breast roll bearing-surface are processed, first to breast roll
On bearing-surface, the plane of corrosion, wear carries out machining and removes surface fatigue layer, then, breast roll is supported
After face surface overlaying austenitic stainless steel material, breast roll bearing-surface surface carries out Roughing and fine machining.
According to the present invention, in step 3, portable boring and milling lathe 3 is pushed in framework memorial archway window and fixation is being applied
On work platform 2, the portable boring and milling machine tool guideway " X " of correction, the levelness of " Y " both direction and perpendicularity, X
To the movable direction of in figure bed piece is referred to, Y-direction refers to that in figure machine pillar moves up and down direction,.
" X " direction machine tool action aligning frame memorial archway window face linearity, refers to that lathe is located in framework memorial archway simultaneously
Fixation, then lathe X to lathe bed together with column move forward and backward centering machined surface linearity, make lathe
X is parallel with machined surface to lathe bed.
According to the present invention, in step 4, special crossbeam milling head device 4 is lifted to portable boring and milling lathe 3
On Y-direction column guide rail saddle, special 4 extension elongation of crossbeam milling head device is adjusted to the range of work, the processing
Scope refers to the length of machined surface.
According to the present invention, in step 5, to breast roll bearing-surface surface overlaying austenitic stainless steel material, because
Austenitic stainless steel has higher decay resistance.Built-up welding front surface dye penetration inspection, it is further preferred, that
100 DEG C of local preheating is carried out before built-up welding to surface.
According to a kind of online restorative procedure of hot-continuous-rolling strip steel roll mill bearing-surface of the present invention, its feature exists
In the special crossbeam milling head device body of the mobile boring and milling machine is welded using Q345-A carbon structural steels steel plate, whole
It is machined after body heat-treatment of annealing, transmission is positioned with ball-screw two end axles bearing;
Milling head device, by reducing gear (gearbox) high for motor rotating speed speed change is made to cutting by Motor drive
Use rotating speed.
According to the present invention, milling head device integral installation is on crossbeam saddle.
According to the present invention, special crossbeam milling head device Main Function is that facing cutter power-driven mechanism is assemblied in horizontal stroke
Milling head device is moved using turn-screw subband on beam guide rail carries out left and right to moving back and forth, and realizes the cutting of bearing-surface
Processing.
According to a kind of online restorative procedure of hot-continuous-rolling strip steel roll mill bearing-surface of the present invention, its feature exists
In in step 4, adjust special crossbeam milling head device 4 depth laterally to go out length is 1500-1650mm.
According to a kind of online restorative procedure of hot-continuous-rolling strip steel roll mill bearing-surface of the present invention, its feature exists
In in step 5, the plane to corrosion, wear on breast roll bearing-surface is machined, and removes surface tired
Labor layer is 1.5-2.5mm thickness.
According to a kind of online restorative procedure of hot-continuous-rolling strip steel roll mill bearing-surface of the present invention, its feature exists
In in step 5, the plane to corrosion, wear on breast roll bearing-surface carries out machining removal surface fatigue
After layer, to breast roll bearing-surface surface overlaying austenitic stainless steel material, overlay cladding thickness is 5-6mm.
According to a kind of online restorative procedure of hot-continuous-rolling strip steel roll mill bearing-surface of the present invention, its feature exists
In, in step 4, cross beam support auxiliary support frame is installed in the cantilever fulcrum of crossbeam, correction crossbeam milling head is filled
Put plane levelness < 0.10mm/M.
According to a kind of online restorative procedure of hot-continuous-rolling strip steel roll mill bearing-surface of the present invention, its feature exists
In in step 5, bearing-surface surface roughness Ra < 3.2, flatness < 0.10mm, breast roll bearing-surface are same
One flatness is in 0.10mm/M.
In 0.10mm/M, i.e., 4 little faces of breast roll bearing-surface is same for breast roll bearing-surface same plane degree
Flatness is in 0.10mm/M.
According to a kind of online restorative procedure of hot-continuous-rolling strip steel roll mill bearing-surface of the present invention, its feature exists
In in step 5, after carrying out Roughing and fine machining to breast roll bearing-surface surface, to breast roll bearing-surface surface
Keyway is set and dimensional accuracy processing is carried out to keyway, liner plate is attached on breast roll bearing-surface surface.
According to the present invention, in step 5, dimensional accuracy processing is carried out to keyway, generally, such as breast roll bearing-surface
Plane 300mm width × 500mm length, then width of keyway general control is in 50mm.
Due to present invention employs technique scheme, i.e., with breast roll bearing-surface version, work condition environment and
Designing, special crossbeam milling head device being manufactured, boring and milling Equipment Foundations are built on the basis of plane on framework memorial archway bottom
Operation platform, portable boring and milling lathe is pushed in framework memorial archway and fixation is on operation platform, and boring is moved in adjustment
Milling machine guide rail " X " to, " Y " to levelness, perpendicularity, special crossbeam milling head device is installed to boring and milling machine " Y "
To on column guide rail saddle and levelness is corrected, to breast roll bearing-surface roughed surface corrosion, wear fatigue layer,
Built-up welding austenitic stainless steel material afterwards, last Roughing and fine machining breast roll bearing-surface is to dimensional accuracy and form and position tolerance
Require.
Rolling-mill housing memorial archway breast roll bearing-surface successful implementation can be repaired online with this method, and by right
The research of bearing-surface corrosion, wear mechanism, selects austenitic stainless steel material as resurfacing welding material, effectively improves
The anticorrosion antiwear performance of breast roll bearing-surface, changes the material property on framework memorial archway surface, extends frame
The service life of roller bearing-surface, reduces the frequency that breast roll bearing-surface repeats to repair, and this method implementation process is just
Prompt, reliable, short construction period, high safety, repair high precision, the low advantage of the cost of overhaul;
Description of the drawings
Fig. 1 is hot-continuous-rolling strip steel rolling-mill housing memorial archway perspective view.
Fig. 2A is the rolling-mill housing memorial archway schematic perspective view for being provided with portable boring and milling machine and special crossbeam milling head.
Fig. 2 B is the X-X along rolling-mill housing memorial archway of Fig. 2A to sectional view.
Fig. 3 is the portable boring and milling machine schematic perspective view for being provided with special crossbeam milling head.
Fig. 4 A is one of the portable boring and milling machine for being provided with special crossbeam milling head in rolling-mill housing memorial archway and amplifies signal
Figure.
Fig. 4 B is view under the cross section that Fig. 4 A is located above breast roll bearing-surface.
In figure,
1 is framework memorial archway, and 2 is operation platform,
3 is portable boring and milling lathe,
, for portable boring and milling lathe X to lathe bed, for portable boring and milling lathe X to bed ways, 3-3 is for moving for 3-2 for 3-1
Dynamic formula boring and milling lathe X to bed ways saddle,
4 is special crossbeam milling head device,
4-1 is special crossbeam milling head device Y-direction column, and 4-2 is special crossbeam milling head device Y-direction column guide rail, 4-3
For special crossbeam milling head device Y-direction column guide rail saddle,
5 is cross beam support auxiliary support frame, and 6 is breast roll bearing-surface, and 7 is framework window face, and 8,9 are respectively
Upper lower support roll window on the inside of framework memorial archway, 10 is the working roll window on the inside of framework memorial archway, and 11 is movable type
Boring and milling lathe auxiliary stand.
Specific embodiment
The present invention is further described with reference to the accompanying drawings and examples:
Embodiment
As illustrated, the present invention comprises the steps:
Step one, according to hot-continuous-rolling strip steel rolling-mill housing 1 and breast roll bearing-surface version and field working conditions,
CAD and simulated condition environment space attitude arrangement, design and manufacture the special horizontal stroke of mobile boring and milling machine
Beam milling head device 4;
Step 2, reparation operation platform 2 is built, on the basis of 1 base plane of framework memorial archway, operation platform is straight
Connect and plane on the oil cylinder of framework memorial archway bottom is arranged at, to ensure the strength and stiffness of operation platform;
Step 3, portable boring and milling lathe 2 is pushed in 1 window of framework memorial archway using backing roll drawing oil cylinder device
And fixation is on operation platform 2, the portable boring and milling machine 2 " X " of correction, " Y " both direction levelness, " X " side
To machine tool action aligning frame memorial archway window face linearity;
Step 4, special crossbeam milling head device 4 is lifted on to portable boring and milling machine 3 " Y " to column guide rail saddle,
4 extension elongation of adjustment crossbeam milling head device installs cross beam support with auxiliary in the cantilever fulcrum of crossbeam to the range of work
Help bracing frame 5, plane levelness < 0.10mm/M on correction crossbeam milling head device 4;
Step 5, by 6 surface corrosion of breast roll bearing-surface, the plane of abrasion and keyway, machining surface is tired
Labor thickness degree 2mm, rear surface overlaying austenitic stainless steel material, then carry out Roughing and fine machining bearing-surface and keyway
To dimensional accuracy, bearing-surface surface roughness Ra < 3.2, flatness < 0.10mm, breast roll bearing-surface (4
Little face) same plane degree is in 0.10mm/M.
In step 4, cross beam support auxiliary support frame is installed in the cantilever fulcrum of crossbeam, the cross beam support is used
Auxiliary support frame 5 is located at the cantilever fulcrum side of crossbeam, can be used to adjusting and strengthening fixed cross beam milling head device 4.
In step 5, after carrying out Roughing and fine machining to breast roll bearing-surface surface, to breast roll bearing-surface surface
Keyway is set and dimensional accuracy processing is carried out to keyway, liner plate is attached on breast roll bearing-surface surface.
In addition, the outside for installing portable boring and milling machine 3 of framework memorial archway 1 is provided with portable boring and milling lathe auxiliary
Support 11, can be used to adjusting and strengthening fixing movable type boring and milling machine.
Due to present invention employs technique scheme, i.e., with 6 version of breast roll bearing-surface, work condition environment
And design, manufacture special crossbeam milling head device 4, boring and milling is built on the basis of plane on 1 bottom of framework memorial archway set
Standby foundation construction platform 2, portable boring and milling lathe 3 is pushed in framework memorial archway 1 and fixation is in operation platform 2
On, adjustment movable type boring and milling machine 3 " X " to, " Y " direction guiding rail levelness, perpendicularity, special crossbeam milling is installed
Head device 4 to portable boring and milling machine 3 " Y " to column guide rail saddle on and correct levelness, to breast roll support
6 roughed surface corrosion, wear fatigue layer of face, rear built-up welding austenitic stainless steel material, last Roughing and fine machining
Breast roll bearing-surface is to dimensional accuracy and Geometrical Tolerance Principle.
According to the inventive method, rolling-mill housing memorial archway breast roll bearing-surface successful implementation can be repaired online, and
By the research to bearing-surface corrosion, wear mechanism, select austenitic stainless steel material as resurfacing welding material, have
Effect improves the anticorrosion antiwear performance of breast roll bearing-surface, changes the material property on framework memorial archway surface, extends
The service life of breast roll bearing-surface, reduces the frequency that breast roll bearing-surface repeats to repair, and this method is implemented
Process is convenient, reliable, and short construction period, high safety repair high precision, the low advantage of the cost of overhaul.
Claims (8)
1. a kind of online restorative procedure of hot-continuous-rolling strip steel roll mill bearing-surface, it is characterised in that
Methods described is comprised the steps of:
Step one, according to hot-continuous-rolling strip steel rolling-mill housing and breast roll bearing-surface version and field working conditions, CAD and simulated condition environment space attitude arrangement, design and manufacture special crossbeam milling head device (4) of mobile boring and milling lathe (3);
Step 2, in framework memorial archway (1) window, build reparation operation platform (2), on the basis of the base plane of framework memorial archway (1), operation platform (2) is directly arranged at the upper plane of framework memorial archway (1) bottom oil cylinder, to ensure the strength and stiffness of operation platform;
Step 3, portable boring and milling lathe (3) are pushed in framework memorial archway window and fixation is on operation platform (2), the portable boring and milling machine tool guideway " X " of correction, the levelness of " Y " both direction and perpendicularity, X moves forward and backward direction to finger in figure bed piece, Y-direction refers to that in figure machine pillar moves up and down direction, makes lathe X parallel with machined surface to lathe bed;
Step 4, special crossbeam milling head device (4) are lifted to the Y-direction column guide rail saddle of portable boring and milling lathe (3), adjust in special crossbeam milling head device (4) extension elongation, cross beam support auxiliary support frame is installed in one end of crossbeam;
Step 5, the plane to corrosion, wear on breast roll bearing-surface are processed, carry out machining first to the plane of corrosion, wear on breast roll bearing-surface and remove surface fatigue layer, then, after breast roll bearing-surface surface overlaying austenitic stainless steel material, breast roll bearing-surface surface carries out Roughing and fine machining.
2. a kind of online restorative procedure of hot-continuous-rolling strip steel roll mill bearing-surface as claimed in claim 1, it is characterized in that, the special crossbeam milling head device body of the mobile boring and milling machine is welded using carbon structural steels steel plate, it is machined after bulk heat treatmet annealing, transmission is positioned with ball-screw two end axles bearing;
Milling head device high for motor rotating speed speed change is used rotating speed to cutting by Motor drive by reducing gear;
Milling head device integral installation is on crossbeam saddle.
3. a kind of online restorative procedure of hot-continuous-rolling strip steel roll mill bearing-surface as claimed in claim 1, it is characterised in that in step 4, adjust special crossbeam milling head device (4) depth laterally and go out length for 1500-1650mm.
4. a kind of online restorative procedure of hot-continuous-rolling strip steel roll mill bearing-surface as claimed in claim 1, it is characterised in that in step 5, the plane to corrosion, wear on breast roll bearing-surface is machined, and it is 1.5-2.5mm thickness to remove surface fatigue layer.
5. a kind of online restorative procedure of hot-continuous-rolling strip steel roll mill bearing-surface as claimed in claim 1, it is characterized in that, in step 5, plane to corrosion, wear on breast roll bearing-surface is carried out after machining removal surface fatigue layer, to breast roll bearing-surface surface overlaying austenitic stainless steel material, overlay cladding thickness is 5-6mm.
6. a kind of online restorative procedure of hot-continuous-rolling strip steel roll mill bearing-surface as claimed in claim 1, it is characterized in that, in step 4, cross beam support auxiliary support frame, plane levelness < 0.10mm/M on correction crossbeam milling head device are installed in one end of crossbeam.
7. a kind of online restorative procedure of hot-continuous-rolling strip steel roll mill bearing-surface as claimed in claim 1, it is characterised in that in step 5, bearing-surface surface roughness Ra < 3.2, breast roll bearing-surface same plane degree is in 0.10mm/M.
8. a kind of online restorative procedure of hot-continuous-rolling strip steel roll mill bearing-surface as claimed in claim 1, it is characterized in that, in step 5, after Roughing and fine machining being carried out to breast roll bearing-surface surface, keyway is set to breast roll bearing-surface surface and dimensional accuracy processing is carried out to keyway, liner plate is attached on breast roll bearing-surface surface.
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CN201510540157.8A CN106475730A (en) | 2015-08-28 | 2015-08-28 | A kind of roll mill supporting surface on-line machining method |
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Cited By (5)
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CN107695610A (en) * | 2017-10-30 | 2018-02-16 | 北京建筑大学 | A kind of prosthetic device for train wallboard local damage |
CN107825142A (en) * | 2017-10-30 | 2018-03-23 | 北京建筑大学 | A kind of vehicle wallboard repair system |
CN107877089A (en) * | 2017-10-30 | 2018-04-06 | 北京建筑大学 | A kind of restorative procedure for train wallboard local damage |
CN107876960A (en) * | 2017-10-30 | 2018-04-06 | 北京建筑大学 | A kind of wallboard prosthetic appliance whistle control system |
CN111390494A (en) * | 2020-04-23 | 2020-07-10 | 安徽马钢重型机械制造有限公司 | Repairing device for positioning groove of side guide plate sliding seat of rolling mill and repairing method thereof |
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CN102085605A (en) * | 2009-12-02 | 2011-06-08 | 中冶焊接科技有限公司 | Flux-cored wire used for submerged arc surfacing repair of furnace bed roll |
CN102896459A (en) * | 2011-07-26 | 2013-01-30 | 上海宝钢设备检修有限公司 | Online repair method for window rolling stress surfaces of rack archways of hot continuous rolling units |
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EP1449612A1 (en) * | 2001-11-26 | 2004-08-25 | Makino Milling Machine Co. Ltd. | Spindle device of machine tool and method of replacing spindle |
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Publication number | Priority date | Publication date | Assignee | Title |
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CN107695610A (en) * | 2017-10-30 | 2018-02-16 | 北京建筑大学 | A kind of prosthetic device for train wallboard local damage |
CN107825142A (en) * | 2017-10-30 | 2018-03-23 | 北京建筑大学 | A kind of vehicle wallboard repair system |
CN107877089A (en) * | 2017-10-30 | 2018-04-06 | 北京建筑大学 | A kind of restorative procedure for train wallboard local damage |
CN107876960A (en) * | 2017-10-30 | 2018-04-06 | 北京建筑大学 | A kind of wallboard prosthetic appliance whistle control system |
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CN107877089B (en) * | 2017-10-30 | 2019-04-12 | 北京建筑大学 | A kind of restorative procedure for train wallboard local damage |
CN107825142B (en) * | 2017-10-30 | 2019-04-16 | 北京建筑大学 | A kind of vehicle wallboard repair system |
CN111390494A (en) * | 2020-04-23 | 2020-07-10 | 安徽马钢重型机械制造有限公司 | Repairing device for positioning groove of side guide plate sliding seat of rolling mill and repairing method thereof |
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Application publication date: 20170308 |