CN110528001A - A kind of laser cladding apparatus and method for repairing mill housing - Google Patents
A kind of laser cladding apparatus and method for repairing mill housing Download PDFInfo
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- CN110528001A CN110528001A CN201910853983.6A CN201910853983A CN110528001A CN 110528001 A CN110528001 A CN 110528001A CN 201910853983 A CN201910853983 A CN 201910853983A CN 110528001 A CN110528001 A CN 110528001A
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- 238000004372 laser cladding Methods 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims description 28
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- 239000011248 coating agent Substances 0.000 claims abstract description 86
- 230000008018 melting Effects 0.000 claims abstract description 84
- 239000000843 powder Substances 0.000 claims abstract description 84
- 238000002844 melting Methods 0.000 claims abstract description 82
- 238000012545 processing Methods 0.000 claims abstract description 71
- 238000005253 cladding Methods 0.000 claims abstract description 26
- 230000005540 biological transmission Effects 0.000 claims abstract description 11
- 239000000835 fiber Substances 0.000 claims abstract description 9
- 238000007689 inspection Methods 0.000 claims description 13
- 230000008439 repair process Effects 0.000 claims description 12
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 10
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- 241000931526 Acer campestre Species 0.000 claims description 2
- 239000000463 material Substances 0.000 description 18
- 239000000758 substrate Substances 0.000 description 10
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- 229910000967 As alloy Inorganic materials 0.000 description 1
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Classifications
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C24/00—Coating starting from inorganic powder
- C23C24/08—Coating starting from inorganic powder by application of heat or pressure and heat
- C23C24/10—Coating starting from inorganic powder by application of heat or pressure and heat with intermediate formation of a liquid phase in the layer
- C23C24/103—Coating with metallic material, i.e. metals or metal alloys, optionally comprising hard particles, e.g. oxides, carbides or nitrides
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- Laser Beam Processing (AREA)
Abstract
A kind of laser cladding apparatus for repairing mill housing, device includes laser melting coating unit and planer-type straight line mould group, laser melting coating unit includes laser emitter, laser melting coating processing head and powder feeder, laser emitter is connect by transmission fiber with the output light connector of laser melting coating processing head, laser to issue laser emitter is issued by laser melting coating processing head, powder feeder is connect by powder feeding pipe with the powder feeding channel of laser melting coating processing head, to cladding powder is transported to hot spot irradiation zone when carrying out laser irradiation molten bath in realize laser melting coating processing, laser melting coating processing head carry is in straight line mould group, straight line mould group is fixed on area to be repaired on mill housing, and make area to be repaired on laser melting coating processing head face mill housing, by straight line mould group drive laser melting coating processing head relative to mill housing surface into Row multiple directions linear movement, to adjust position of the laser melting coating processing head relative to mill housing area to be repaired.
Description
Technical field
The present invention relates to the technical fields of laser processing, and in particular to it is a kind of repair mill housing laser cladding apparatus and
Method.
Background technique
Mill housing is also known as rolling-mill housing, frame body, is an integral frame structure, and support is primarily served in milling train and is consolidated
It is set for using, is the important composition part of the milling trains such as hot rolling, cold rolling, tandem rolling.Mill housing is size and again in milling train working stand
Maximum component is measured, is mainly made of section thick big column and crossbeam, a whole set of roll and roll adjusting device are all mounted on
Face, in rolling, rack will bear whole roll-forces and impact loading huge when biting steel billet, and rack is to roll
The permanent components of machine, thus have very high requirement to its intensity.
In the milling train course of work, rolling is encountered hot steel billet and can be atomized rapidly and carry billet surface secretly and fallen off with cooling water
Iron scale particle to surrounding sputter so that mill housing will not only bear roll-force and impact loading, also subject to quilt
The abrasion of the rolling cooling water corrosion and iron scale particle of high-temperature atomizing causes the window side of mill housing, bottom surface, inside and outside
The multiple regions such as breast roll mounting surface can generate different degrees of corrosion, wear and by fatigue, plastic deformation or physical displacement
The problems such as plate form control is bad when excess play caused by influencing causes milling train position inaccurate or influences rolling, will finally lead
The product quality of milling train production is caused to be greatly affected.
The reinforcing and reparation of mill housing should carry out simultaneously, in the design process of mill housing, often in order to
Guarantee mill housing using safe and service life, the mill housing can be made to have certain service life tediously long, i.e. mill housing
Various failures can occur within the mill housing service life period, this allows for the reinforcing of mill housing and reparation is provided with economy
Meaning and value.
It includes thickness compensation method, addition gasket, Bead weld repair etc., specific implementation that traditional mill housing, which strengthens reparation means,
Mode and advantage and disadvantage are as described below:
1. thickness compensation method: removing material by machining, remove the levelling contact surface of mill housing surface damage layer, expand
Big size is compensated by increasing liner plate thickness.
Advantage: simple to operate.
Disadvantage: the property due to having not been changed mill housing surface does not play invigoration effect, therefore after a period of use,
It needs to be repaired again.And will have an adverse effect to the strength and stiffness of mill housing after repeatedly machining.
2. adding gasket: restoring the size in Local Damaged region by way of increasing metal gasket.
Advantage: materials facilitate installation simple, are currently used method for maintaining.
Disadvantage: service life is short, and frequently, labor intensity of workers is big for replacement.
3. Bead weld repair
Advantage: overlay cladding is metallurgical bonding with parent metal, and shock resistance is good；Overlay cladding thickness is big, and maximum can reach
30mm；It is at low cost, good economy performance etc..
The problem of disadvantage: built-up welding heat input is big, is likely to result in mill housing size distortion, be easy to appear welding defect and
It is not easy to obtain uniform uniform thickness, fine and close overlay cladding.
Summary of the invention
In order to solve the above technical problems, the present invention provides a kind of laser cladding apparatus and method for repairing mill housing, lead to
It crosses laser beam irradiation to melt cladding material (such as alloy powder or ceramic powders) and substrate surface thin layer rapidly, be moved in light beam
Quickly solidification after opening, formation has the function of the coating such as high rigidity, wear-resistant, corrosion-resistant, high temperature resistant, anti-oxidant, thus significantly
Improve substrate material surface characteristic, laser melting coating is noncontact procession mode, can not only be controlled by laser power adjusting
Heating input, can also adjust the functional characteristic and thickness of coating by cladding material ingredient and technological parameter, the present invention
Technical solution it is as follows:
As the first aspect of the present invention, a kind of laser cladding apparatus for repairing mill housing is provided, described device includes
Laser melting coating unit and planer-type straight line mould group, the laser melting coating unit include laser emitter, laser melting coating processing head and
Powder feeder, the laser emitter are connect by transmission fiber with the output light connector of the laser melting coating processing head, to incite somebody to action
The laser that laser emitter issues is issued by laser melting coating processing head, and the powder feeder passes through powder feeding pipe and the laser melting coating
The powder feeding channel of processing head connects, cladding powder to be transported in the molten bath of hot spot irradiation zone when carrying out laser irradiation
Realize laser melting coating processing, the laser melting coating processing head carry is rolled in the straight line mould group, the straight line mould group is fixed on
Area to be repaired on machine memorial archway, and make area to be repaired on laser melting coating processing head face mill housing, pass through the straight line mould
Group drives laser melting coating processing head to carry out multiple directions linear movement relative to mill housing surface, to adjust laser melting coating processing
Position of the head relative to mill housing area to be repaired.
Further, the planer-type straight line mould group be two axis straight line mould groups, with drive laser melting coating processing head relative to
The movement of the progress of mill housing area to be repaired X-axis and Y direction；Alternatively, the planer-type straight line mould group is three axis straight line moulds
Group, to drive laser melting coating processing head relative to the movement of mill housing area to be repaired progress X-axis, Y-axis and Y direction.
Further, the laser emitter is optical fiber laser or semiconductor coupling optical fiber laser, the laser
Power is 3-6KW, and the optical maser wavelength is 1064nm or 980nm.
Further, the laser melting coating processing head is paraxonic Process of Powder Feeding Laser Cladding processing head, and the powder feeding channel is
Paraxonic powder feeding channel, paraxonic powder feeding channel is fixed on the outer wall of the laser melting coating processing head by connector, described
The powder entering end in paraxonic powder feeding channel is connect with the powder feeder by powder feeding pipe, when going out powder direction towards laser irradiation of place powder end
In the molten bath of hot spot irradiation zone.
Further, the powder feeder is airborne formula powder feeder.
Further, the straight line mould group is synchronous banding pattern straight line mould group or ball wire rod-type straight line mould group.
Further, collimating mirror, scanning galvanometer are disposed with along laser optical path direction in the laser melting coating processing head
And lens, the laser that the laser emitter issues are transferred to laser melting coating processing head by transmission fiber and output light connector
It is interior, and region to be processed is arrived by irradiation after collimating mirror, scanning galvanometer and the lens in laser melting coating processing head.
As a second aspect of the invention, a kind of laser cladding method for repairing mill housing is provided, which comprises
It determines the benchmark of mill housing area to be repaired and repairs size；
Planer-type straight line mould group is fixed at mill housing area to be repaired, laser melting coating processing head face is rolled
Area to be repaired on machine memorial archway；
Position of the laser melting coating processing head relative to mill housing area to be repaired is adjusted by straight line mould group；
The laser emitter and powder feeder for starting laser melting coating unit carry out laser melting coating to mill housing area to be repaired
Repair.
Further, the benchmark of the determining mill housing area to be repaired is specifically included with size is repaired:
The mounting surface of mill housing positioning liner plate (bottom surface slide plate) is detected and recorded, then mill housing is carried out
Line machining, clears up greasy dirt, iron scale dirt and the fatigue layer on mill housing surface, then by positioning liner plate (bottom surface slide plate)
Whole mill housing is detected and recorded by drawing after replacement；
Surface nondestructive inspection is carried out to the region after machining, flaw detection mode includes dye penetrant inspection, x-ray detection, ultrasonic wave
Flaw detection and fluorescent penetrating inspection, flaw detection rear surface require flawless, gas hole defect；
Fore side rack is adjusted under fore side mill housing working condition and transmission side frame reaches best Shaft alignment state
Framework window, basal surface position are detected and recorded afterwards, by drawing, the benchmark of area to be repaired is determined and repairs ruler
It is very little.
Further, cladding material described in laser melting coating selects anti-oxidant, high temperature resistant, corrosion-resistant and wear-resisting property
Good alloy powder material, including but not limited to Ni base alloy powder or Co base alloy powder material.
Further, the method also includes:
Thickness, flatness, the distribution of plane hardness and surface nondestructive inspection detection are carried out to the cladding layer after the completion of reparation
And it records；
Sanding and polishing processing is carried out to cladding layer, removes small burr, oxide skin of clad layer surface etc., exposes its surface
Metallic luster；Liner plate is manufactured according to above-mentioned reparation size.
The invention has the following advantages:
(1) not damaging substrate: laser beam directive property is good, and can accurately handle need to repair position without damaging substrate；And swash
Beam energy is concentrated, and heat affected area is small, does not influence substrate performance, and thermal deformation is minimum.
(2) high financial profit: laser melting coating can prepare high performance alloy surface coating on cheap metal substrate
Without changing substrate itself, cost is reduced, saves valuable, Rare Metals Materials.
(3) it is suitable for the different reparation demands of all kinds of workpiece: the hardness of laser cladding powder and particular functionality adjustment side
Just, meets the needs of each type component laser melting coating and reparation；Cladding layer and substrate are metallurgical bonding, dense internal organization, nothing
The defects of stomata and crackle, performance are stablized, and the reparation of all kinds of heavy parts is suitble to.
(4) be easily integrated automation control: laser melting and coating process process is simple, the automation control of Yi Shixian laser cladding process
System reduces working strength.
(5) compared with thickness compensation method, addition gasket, the reparations means such as Bead weld repair, laser melting coating have heat input it is small,
Substrate dilution is low, dense structure, coating and matrix metallurgical junction get togather, are suitble to more cladding material, dusty material granularity and content
Variation facilitates the features such as adjustable.
Detailed description of the invention
Fig. 1 is that a kind of overall structure of online laser cladding apparatus for repairing mill housing provided in an embodiment of the present invention is shown
It is intended to；
Fig. 2 is a kind of top view of online laser cladding apparatus for repairing mill housing provided in an embodiment of the present invention；
Fig. 3 is the structural schematic diagram of paraxonic Process of Powder Feeding Laser Cladding processing head provided in an embodiment of the present invention.
Description of symbols: 1, laser emitter；2, transmission fiber；3, powder feeder；4, powder feeding pipe；5, straight line mould group；6,
Mill housing；7, laser melting coating processing head；8, output light connector；9, paraxonic powder feeding channel；10, laser beam.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiment is only present invention a part, instead of all the embodiments.Based on the present invention
In embodiment, all other implementation obtained by those of ordinary skill in the art without making creative efforts
Example, shall fall within the protection scope of the present invention.
As shown in Figure 1, a kind of laser cladding apparatus for repairing mill housing is provided as the first embodiment of the present invention,
Described device includes laser melting coating unit and planer-type straight line mould group 5, and the laser melting coating unit includes laser emitter 1, swashs
Light cladding processing head 7 and powder feeder 3, the laser melting coating processing head 7 has laser channeling and powder feeding channel, and has and laser
The output light connector 8 that the transmission fiber 2 of transmitter 1 connects, the laser emitter 1 are molten by transmission fiber 2 and the laser
The output light connector 8 for covering processing head 7 connects, and the laser beam 10 to issue laser emitter 1 passes through laser melting coating processing head 7
Laser channeling issue, the powder feeder 3 is connect by powder feeding pipe 4 with the powder feeding channel of the laser melting coating processing head 7, to
Laser melting coating processing, the laser are realized in the molten bath that cladding powder is transported to hot spot irradiation zone when carrying out laser irradiation
For 7 carry of cladding processing head in the straight line mould group 5, the straight line mould group 5 is fixed on area to be repaired on mill housing 6, and
Make area to be repaired on 7 face mill housing 6 of laser melting coating processing head, laser melting coating processing is driven by the straight line mould group 5
First 7 carry out multiple directions linear movement relative to 6 surface of mill housing, to adjust laser melting coating processing head 7 relative to milling train board
The position of 6 area to be repaired of mill.
The present invention combines the height of theory and practice for existing maintenance unit and the deficiency of method, adds by practical
It is improved after work application and develops a kind of online laser cladding apparatus for repairing mill housing；This uses the laser of optical fiber output
Transmitter 1 and airborne formula powder feeder 3 connect laser melting coating processing head 7, and the straight line mould group 5 of gantry type frame structure is installed and is fixed
On mill housing 6, ground occupies small, using the high feature quick response of straight line mould 5 scalabilities of group and is adapted to different classes of, no
Mill housing 6 with size repairs task, and entire laser cladding process is stablized, and remediation efficiency is high, and laser melting coating heat input
Small, cladding layer forming does not influence 6 substrate performance of mill housing and structure size, the functional characteristic of cladding material facilitate it is adjustable,
It can effectively improve or strengthen 6 surface property of mill housing, prolong the service life, solving traditional method for maintaining cannot be well
Meet the problem that mill housing 6 is strengthened with improves the service life under complex working condition after reparation.
Preferably, the planer-type straight line mould group 5 is composed of the straight line mould group 5 of each unit, can pass through each list
The combined increase and decrease of straight line mould group 5 of member realizes that integrally-built height and size adjust.For example, the planer-type straight line mould group
5 can be two axis straight line mould groups 5, including X-axis straight line mould group 5 and Y-axis straight line mould group 5 are composed, to drive laser melting coating to add
Foreman 7 carries out the movement of X-axis and Y direction relative to 6 area to be repaired of mill housing；Alternatively, the planer-type straight line mould group 5
Be composed for three axis straight line mould groups 5, including X-axis, Y-axis and Z axis straight line mould group 5, with drive laser melting coating processing head 7 relative to
6 area to be repaired of mill housing carries out the movement of X-axis, Y-axis and Y direction, and the straight line mould group 5 can be synchronous banding pattern straight line
Mould group 5 or ball wire rod-type straight line mould group 5.
Preferably, the laser emitter 1 is optical fiber laser or semiconductor coupling optical fiber laser, and the output light connects
First 8 can be QBH connector, QD connector or LLK connector.
Preferably, the laser melting coating processing head 7 is paraxonic Process of Powder Feeding Laser Cladding processing head 7, and the powder feeding channel is
Paraxonic powder feeding channel 9, paraxonic powder feeding channel 9 are fixed on the outer wall of the laser melting coating processing head 7 by connector, institute
The powder entering end for stating paraxonic powder feeding channel 9 is connect with the powder feeder 3 by powder feeding pipe 4, and place powder end goes out powder direction towards laser
When irradiation in the molten bath of hot spot irradiation zone.
Preferably, the powder feeder 3 is airborne formula powder feeder 3, is with servo electricity as high-precision airborne formula powder feeder 3
Machine controls powder mass flow size, and inert gas makees a kind of continuous powder feeder unit of powder stream carrier.
Preferably, in the laser melting coating processing head 7 along laser optical path direction be disposed with collimating mirror, scanning galvanometer with
And lens, the laser beam 10 that the laser emitter 1 issues are transferred to laser melting coating by transmission fiber 2 and output light connector 8
In processing head 7, and region to be processed is arrived by irradiation after collimating mirror, scanning galvanometer and the lens in laser melting coating processing head 7,
By the way that the sweep parameter of scanning galvanometer and the laser output parameter of laser emitter 1 is arranged, to meet laser melting and coating process ginseng
Number.
Preferably, the alloy powder material that cladding material selects anti-oxidant, high temperature resistant, corrosion-resistant and wear-resisting property good,
Including but not limited to Ni base alloy powder or Co base alloy powder material；Laser cladding technological parameter is: 1. output power: 3-
6KW, 2. spot size: square hot spot 3x3mm or 5x5mm, circle hot spot φ 4-6mm, 3. scanning speed 15-100mm/s, cladding process
Middle load powder gas and inert gas is all made of to the protection gas in molten bath, requires adjustment laser cladding technological parameter according to size is repaired.
As a second aspect of the invention, a kind of laser cladding method for repairing mill housing is provided, which comprises
(1) first the mounting surface of 6 positioning liner plate of mill housing (bottom surface slide plate) is detected and is recorded, then to mill housing
6 are machined online, dirts and the fatigue layers such as greasy dirt, the iron scale on 6 surface of mill housing are cleared up, then by positioning liner plate
Whole mill housing 6 is detected and recorded by drawing after (bottom surface slide plate) replacement.
(2) surface nondestructive inspection is carried out to the region after machining, can be dye penetrant inspection, x-ray detection, ultrasonic wave spy
The defects of nondestructive inspections mode such as wound, fluorescent penetrating inspection, flaw detection rear surface requires flawless, stomata, can just continue in next step.
(3) fore side rack is adjusted under 6 working condition of fore side mill housing and transmission side frame reaches most preferably in
The positions such as framework window, bottom surface are detected and are recorded after state, by drawing determine area to be repaired benchmark with repair
Multiple size.
(4) the straight line mould group 5 of gantry type frame structure is fixed on the coverlay to be repaired of mill housing 6, makees gantry cross
The straight line mould group 5 of beam is parallel with the coverlay to be repaired of mill housing 6 and can move up and down along Z-direction, thereon the laser melting coating of carry
Processing head 7 can carry out multiple directions linear movement relative to 6 surface of mill housing；Adjust laser melting coating processing head 7 relative to
The laser focal of 6 area to be repaired of mill housing and powder feeding position.
(5) laser melting coating repair is carried out to 6 area to be repaired of mill housing, cladding material selects anti-oxidant, resistance to height
The good alloy powder material of warm, corrosion-resistant and wear-resisting property, including but not limited to Ni base alloy powder or Co based alloy powder
Powder material；Laser cladding technological parameter is: 1. output power: 3-6KW, 2. spot size: square hot spot 3x3mm or 5x5mm, circle light
Spot φ 4-6mm, 3. scanning speed 15-100mm/s carry powder gas in cladding process and are all made of indifferent gas to the protection gas in molten bath
Body requires adjustment laser cladding technological parameter according to size is repaired.
(6) thickness, flatness, the distribution of plane hardness and surface nondestructive inspection is carried out to the cladding layer after the completion of reparation to examine
It surveys and records.
(7) sanding and polishing processing is carried out to cladding layer, removes small burr, oxide skin of clad layer surface etc., makes its surface
Expose metallic luster；Liner plate is manufactured according to above-mentioned reparation size.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of laser cladding apparatus for repairing mill housing, which is characterized in that described device includes laser melting coating unit and dragon
Gate-type straight line mould group, the laser melting coating unit include laser emitter, laser melting coating processing head and powder feeder, the laser hair
Emitter is connect by transmission fiber with the output light connector of the laser melting coating processing head, is swashed to issue laser emitter
Light is issued by laser melting coating processing head, and the powder feeder is connected by the powder feeding channel of powder feeding pipe and the laser melting coating processing head
Connect, to cladding powder is transported to hot spot irradiation zone when carrying out laser irradiation molten bath in realize laser melting coating processing,
For the laser melting coating processing head carry in the straight line mould group, the straight line mould group is fixed on area to be repaired on mill housing
Domain, and make area to be repaired on laser melting coating processing head face mill housing, drive laser melting coating to add by the straight line mould group
Foreman carries out multiple directions linear movement relative to mill housing surface, to adjust laser melting coating processing head relative to mill housing
The position of area to be repaired.
2. the laser cladding apparatus according to claim 1 for repairing mill housing, which is characterized in that the planer-type straight line
Mould group is two axis straight line mould groups, to drive laser melting coating processing head to carry out X-axis and Y-axis side relative to mill housing area to be repaired
To movement；Or the planer-type straight line mould group is three axis straight line mould groups, to drive laser melting coating processing head relative to milling train
The movement of the progress of memorial archway area to be repaired X-axis, Y-axis and Y direction.
3. the laser cladding apparatus according to claim 1 for repairing mill housing, which is characterized in that the laser emitter
For optical fiber laser or semiconductor coupling optical fiber laser, the laser power is 3-6KW, and the optical maser wavelength is 1064nm
Or 980nm.
4. the laser cladding apparatus according to claim 1 for repairing mill housing, which is characterized in that the laser melting coating adds
Foreman is paraxonic Process of Powder Feeding Laser Cladding processing head, and the powder feeding channel is paraxonic powder feeding channel, and paraxonic powder feeding channel is logical
It crosses connector to be fixed on the outer wall of the laser melting coating processing head, the powder entering end and the powder feeder in paraxonic powder feeding channel
It is connected by powder feeding pipe, when going out powder direction towards laser irradiation in the molten bath of hot spot irradiation zone of place powder end.
5. the laser cladding apparatus according to claim 1 for repairing mill housing, which is characterized in that the powder feeder is gas
Load formula powder feeder.
6. the laser cladding apparatus according to claim 1 for repairing mill housing, which is characterized in that the straight line mould group is
Synchronous banding pattern straight line mould group or ball wire rod-type straight line mould group.
7. the laser cladding apparatus according to claim 1 for repairing mill housing, which is characterized in that the laser melting coating adds
Collimating mirror, scanning galvanometer and lens are disposed with along laser optical path direction in foreman, what the laser emitter issued swashs
Light is transferred in laser melting coating processing head by transmission fiber and output light connector, and passes through the collimation in laser melting coating processing head
Region to be processed is arrived in irradiation after mirror, scanning galvanometer and lens.
8. a kind of laser cladding method for repairing mill housing, which is characterized in that the described method includes:
It determines the benchmark of mill housing area to be repaired and repairs size；
Planer-type straight line mould group is fixed at mill housing area to be repaired, laser melting coating processing head face milling train board is made
Area to be repaired on mill；
Position of the laser melting coating processing head relative to mill housing area to be repaired is adjusted by straight line mould group；
The laser emitter and powder feeder for starting laser melting coating unit carry out laser melting coating reparation to mill housing area to be repaired
Work.
9. the laser cladding method according to claim 8 for repairing mill housing, which is characterized in that the determining milling train board
The benchmark of mill area to be repaired is specifically included with size is repaired:
The mounting surface of mill housing positioning liner plate (bottom surface slide plate) is detected and recorded, then online machine is carried out to mill housing
Greasy dirt, iron scale dirt and the fatigue layer on mill housing surface are cleared up in processing, then replace positioning liner plate (bottom surface slide plate)
Whole mill housing is detected and recorded by drawing afterwards；
Surface nondestructive inspection is carried out to the region after machining, flaw detection mode includes dye penetrant inspection, x-ray detection, ultrasonic examination
And fluorescent penetrating inspection, flaw detection rear surface require flawless, gas hole defect；
Fore side rack is adjusted under fore side mill housing working condition reaches right after best Shaft alignment state with side frame is driven
Framework window, basal surface position are detected and are recorded, and by drawing, are determined the benchmark of area to be repaired and are repaired size.
10. the laser cladding method according to claim 8 for repairing mill housing, which is characterized in that the method is also wrapped
It includes:
Cladding layer progress thickness, flatness, the distribution of plane hardness and surface nondestructive inspection after the completion of reparation is detected and remembered
Record；
Sanding and polishing processing is carried out to cladding layer, removes small burr, oxide skin of clad layer surface etc., its surface is made to expose metal
Gloss；Liner plate is manufactured according to above-mentioned reparation size.
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| CN201910853983.6A CN110528001A (en) | 2019-09-10 | 2019-09-10 | A kind of laser cladding apparatus and method for repairing mill housing |
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| CN201910853983.6A CN110528001A (en) | 2019-09-10 | 2019-09-10 | A kind of laser cladding apparatus and method for repairing mill housing |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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| CN102453898A (en) * | 2010-10-26 | 2012-05-16 | 沈阳大陆激光技术有限公司 | On-site laser repairing method for rolling mill housing |
| CN103741135A (en) * | 2013-12-19 | 2014-04-23 | 辽宁金之运激光工程技术有限公司 | Device for remanufacturing metal surface and application method of device |
| CN103817320A (en) * | 2014-03-18 | 2014-05-28 | 马海鹏 | Cobalt-based composite powder used for restoring rack of rolling mill and method for restoring rack of rolling mill |
| CN104439881A (en) * | 2014-11-19 | 2015-03-25 | 首钢总公司 | Laser cladding and on-line machining repair method for roughing mill housing roller positioning groove |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102453898A (en) * | 2010-10-26 | 2012-05-16 | 沈阳大陆激光技术有限公司 | On-site laser repairing method for rolling mill housing |
| CN103741135A (en) * | 2013-12-19 | 2014-04-23 | 辽宁金之运激光工程技术有限公司 | Device for remanufacturing metal surface and application method of device |
| CN103817320A (en) * | 2014-03-18 | 2014-05-28 | 马海鹏 | Cobalt-based composite powder used for restoring rack of rolling mill and method for restoring rack of rolling mill |
| CN104439881A (en) * | 2014-11-19 | 2015-03-25 | 首钢总公司 | Laser cladding and on-line machining repair method for roughing mill housing roller positioning groove |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| 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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