CN102453899A - Preparation method of heat-resistant and wear-resistant alloy coating on surface of wrapper roll of hot rolling sheet - Google Patents
Preparation method of heat-resistant and wear-resistant alloy coating on surface of wrapper roll of hot rolling sheet Download PDFInfo
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- CN102453899A CN102453899A CN2010105187139A CN201010518713A CN102453899A CN 102453899 A CN102453899 A CN 102453899A CN 2010105187139 A CN2010105187139 A CN 2010105187139A CN 201010518713 A CN201010518713 A CN 201010518713A CN 102453899 A CN102453899 A CN 102453899A
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Abstract
The invention relates to a preparation method of a heat-resistant and wear-resistant alloy coating on the surface of a wrapper roll of a hot rolling sheet, which is characterized by comprising the following steps of: 1) pre-treating the surface of the wrapper roll; 2) selecting alloy powder and adjusting an automatic powder sending device; 3) adjusting a light beam: selecting a broadband integral mirror with the size of 10*1 mm; and adjusting a defocusing distance so that a focal laser spot is rectangular; 4) carrying out laser cladding on the heat-resistant and wear-resistant coating: selecting a DL-HL-T5000 type CO2 laser, wherein an operating platform is a SIMENS CNC (Computerized Numerical Control) laser processing machine; automatically sending the alloy powder into a laser weld crater by a synchronous powder sending device; axially feeding along the wrapper roll by a high-power focal laser beam and an automatic powder sending head; and rotating at a revolving speed so that a uniform and compact laser cladding is formed on the processing surface of the wrapper roll; and 5) carrying out flaw detection after cladding. In the invention, the hardness, the wear resistance and the capability of resisting contact fatigue of the surface of the wrapper roll of the hot rolling sheet can be obviously improved through a strengthened layer formed by the laser cladding.
Description
Technical field
the present invention relates to the method that a kind of metallurgical equipment parts surface prepares abrasion resistant coating; Particularly relate to and a kind ofly adopt laser melting and coating technique to prepare hot rolled plate to help the have strong resistance to heat and hard wearing method of alloy coat of winding up roller surface, belong to the laser melting and coating technique field.
Background technology
It is the important spare parts on the plate rolling production line that
milling train helps winding up roller; The quality of its quality; The length in work-ing life directly has influence on roller consumption size, the quality of steel, maintenance cost, operating rate of rolling mill, finally has influence on the production cost of steel.Cause and help the winding up roller failure reasons: one of which, alternation thermal cycling effect, roll surface produces heat fatigue cracking after use for some time; Its two, produce the abrasive wear that galling and oxide debris cause between roll surface and steel band.Excessive impact often causes the damage that helps winding up roller.In actual production to helping the winding up roller surface to have strong resistance to heat and hard wearing treating method reduce to impact.
are domestic mainly to be turning method, plating method, hot spray process, electrode weldering method, traditional welding method to the method that helps the winding up roller reparation.The turning method is reliable, surface accuracy is high, but turning rear axle spare size decreases is long in time limit, and expense is high, and the site disposal difficulty is big; The coat binding strength of plating method is lower, wears no resistance, and the plating of coating is thick limited in one's ability; Though the bonding strength of hot spray process and electrode weldering method repair layer is higher, distortion is big, is not suitable for the big area reparation; The surfacing layer that the tradition welding method obtains is thick, and the heat affected zone area is big, and thinning ratio is big, lap-joint's preferential wear.Through selecting suitable alloy powder and laser melting and coating process for use, at the surperficial repair layer that lost efficacy and help the winding up roller surface energy to access to have excellent metallurgical combination, surface of good shape, have strong resistance to heat and hard wearing.
therefore select suitable preparation hot rolled plate to help the have strong resistance to heat and hard wearing technology of alloy coat of winding up roller surface, and it is very important further to improve its performance and work-ing life,, be the current problem that needs to be resolved hurrily in affiliated field.
laser melting and coating technique has obtained rapid popularization and widespread use in recent years as a kind of advanced person's re-manufacturing technology.
laser melting and coating technique utilizes the high characteristics of high energy laser beam focused energy; Moment will be preset or send the powdered alloy of putting, have specific physical, chemistry or mechanical property to melt fully synchronously automatically with laser at substrate surface; Base material part fusing simultaneously forms a kind of new composite shape matl, rapid solidification after the laser beam flying; The fine and close coating of acquisition and matrix metallurgical binding is to reach the purpose of recovering geometrical dimension and surface strengthening.
are present; About utilizing laser melting and coating process to prepare the patent of equipment unit wear resistant alloy coating and reporting a lot: for example; Publication number is " at the quick depositing process of preparing antinwear heat resistant composite coating of crystallizer surface laser " that the Chinese invention patent application of CN1932082 provides; Its characteristics are to utilize superpower laser; Become the good toughness bottoming transition layer of metallurgical binding through the laser rapid scanning with matrix at the copper plate of crystallizer surface cladding, and prepare cobalt base alloy wear-resisting and the heat resistanceheat resistant excellent property at the bottoming alloy surface through laser wide-band cladding.
publication number is " preparation method of laser fusion covered nickel base nanometer WC/Co precoated layer " that the Chinese invention patent application of CN1786272 provides; This preparation method comprises the following steps: 1. by the shellac of every grammes per square metre and the absolute ethyl alcohol weighing shellac and the absolute ethyl alcohol of 10～20 grammes per square metres, then with processing sticker in the described shellac adding absolute ethyl alcohol; 2. as required in the ratio of the sticker of every gram nickel base nanometer WC/Co powder and 0.1 milliliter～0.25 milliliter, weighing nickel base nanometer WC/Co powder and described sticker also mix, and stir and process precoating glue; 3. above-mentioned precoating glue is coated in the workpiece surface of treating Laser Cladding Treatment equably, processes precoated layer; 4. oven dry.Adopt homemade adhesive preparation nickel base nanometer WC/Co precoated layer, and then adopt laser melting and coating process, prepared that the surface is more smooth, finer and closely woven, basically eliminate crackle and hole and be the nickel base nanometer WC/Co compound coating of metallurgical binding with matrix.
publication number is " laser melting and coating process of hydraulic support column cylinder, piston rod wear-resisting erosion resistance coating " that the Chinese invention patent application of CN101338427 provides; Comprise following technological process: at first column cylinder, piston rod surface pre-treatment: column cylinder barrel, piston rod surface carry out oil removing, rust cleaning under the room temperature, and clean with alcohol wash; The adjusting of the selection of powdered alloy and automatic powder feeding device then: select for use have good wear-resisting erosion resistance performance and with the good iron(-)base powder of the metallurgical consistency of matrix, mainly contain Fe, C, Cr, Ni, Mo, Si, N, Nb, Ta, B in the composition of iron(-)base powder; The adjusting of last automatic powder feeding device: regulate the automatic powder feeding device, the powdered alloy that the automatic powder feeding head is come out just in time drops in the laser molten pool, regulates powder sending quantity, makes the thickness of alloy powder coating reach 0.6-1.2mm.
Publication number is " the railroad switch sliding bed surface abrasion resistance non-corrosive alloy coating laser melting and coating process " that the Chinese invention patent application of CN101338425 provides; Comprise following technological process: at first slide plate surface preparation; Promptly at room temperature degreasing and rust removal is carried out on the slide plate surface, and clean with alcohol wash; Be presetting of powdered alloy then; Promptly be preset in the slide plate surface after the above-mentioned processing to the iron-based of treating cladding, Ni-based or Co-based alloy powder; And adjust prealloyed powder with the floating rule that has guide rail; Make it to be evenly distributed on slide plate surface and have suitable thickness, to satisfy the requirement of coat-thickness after the cladding; Be that slide plate is strengthened in the light cladding at last, select gas CO for use
2
Laser apparatus, worktable are numerically-controlled machine, carry out laser melting coating on the slide plate surface and strengthen.
publication number is " the pick-like bit denticle head laser fusing and coating wear-resistant coating reinforcing process " that the Chinese invention patent application of CN101338428 provides, and comprises following technological process: at first be the pre-treatment of pick denticle head surface; Be the selection of powdered alloy and the adjustment of automatic powder feeding device then; Be pick head laser melting coating coated with wear-resisting alloy at last.
Certain technique effect is obtained though the technique scheme that prior art provides can utilize laser melting and coating process that the equipment component parts are carried out the abrasion resistant coating processing in
.But to other specific equipment unit, the ad hoc structure as hot rolled plate helps winding up roller for example, the processing parameter that existing laser melting and coating process is provided obviously can not adapt to.
Verification is retrieved through the applicant in
: adopt laser melting and coating process to help the winding up roller surface preparation alloy coat of having strong resistance to heat and hard wearing at hot rolled plate, domestic beyond example is not still seen relevant report abroad yet.Therefore, seek out suitable employing laser melting coating and help the have strong resistance to heat and hard wearing processing parameter of alloy coat of winding up roller surface preparation, still need the those skilled in the art further to make creationary research work at hot rolled plate.
Summary of the invention
the objective of the invention is to handle difficult problem to prior art to help the winding up roller surface preparation alloy coat of having strong resistance to heat and hard wearing at hot rolled plate; Improve through research repeatedly, provided a kind of new hot rolled plate and helped the have strong resistance to heat and hard wearing preparation method of alloy coat of winding up roller surface.This method adopt have good have strong resistance to heat and hard wearing, with help the winding up roller matrix to have the good metallurgy iron(-)base powder compatible with mechanics; In high-power laser beam irradiation workpiece surface; Adopt the automatic powder feeding device to send into powdered alloy to laser molten pool synchronously; Powdered alloy takes place to melt fast and solidify in the molten bath, forms the wear-resisting erosion resistance cladding layer of even compact, and cladding layer and matrix form firm metallurgical binding.Cladding layer hardness can be selected in HRC30～60, and cladding layer thickness is at 0.7～2.0mm, hardness, thickness uniform distribution.
The technical scheme that
the present invention provides is: this hot rolled plate helps the have strong resistance to heat and hard wearing preparation method of alloy coat of winding up roller surface, is characterized in that technological process is following.
(1) helps the winding up roller surface preparation: under the room temperature to helping the winding up roller finished surface to carry out oil removing, rust cleaning; And it is clean with alcohol wash; The workpiece working position is tested defective such as require working position flawless, pore, be mingled with the penetrant inspection method.
selection of (2) powdered alloy and the adjusting of automatic powder feeding device: select for use have good have strong resistance to heat and hard wearing performance and with the good iron(-)base powder of the metallurgical consistency of matrix; Its Chemical Composition percentage composition by weight is: C:0.05～0.1%, Cr:15～16%, Ni:3～5%, Mo:0.6～1%, Si:0.6～1%, N:0.6～0.8%, Nb:0.6～0.8%, Ta:0.2～0.4%, B:0.2～0.4%, surplus are Fe.
(3) light beam regulation: select 10*1mm broadband integral mirror for use, and regulating defocusing amount, to make the laser focusing hot spot be rectangle, spot size: long * is wide=(7～10) * (1～1.5) mm.
(4) wear-resisting erosion resistance coating laser melting coating: select DL-HL-T5000 type CO for use
2
Laser apparatus, worktable are the SIMENS CNC laser processing machine.Adopt the synchronous powder feeding system device that powdered alloy is sent into laser molten pool automatically, high power focused laser beam and automatic powder feeding head are set the rotating speed rotation along helping the winding up roller axial feed, help the winding up roller finished surface to form the laser cladding layer of even compact, and the melting and coating process parameter is following.
laser power P=3500～4500W; The focusing rectangle spot size: long * is wide=(7～10) * (1～1.5) mm; Scan velocity V=400～550mm/min; Overlapping rate 40～70%; Coat-thickness: 0.7～1.8mm.
Flaw detection after
(5) cladding: with the penetrant inspection method conveying roller working position is tested, require working position flawless, gas hole defect.
The DL-HL-T5000 type CO that the present invention selects for use
2
Laser apparatus, SIMENS CNC laser processing machine and synchronous powder feeding system device are the conventional equipment of the industry.
compared with prior art, the invention has the beneficial effects as follows: (1) provides a kind of brand-new restorative procedure for hot rolled plate helps the winding up roller surface to repair.
The powdered alloy that
(2) this process using has good heat resistanceheat resistant wear resisting property is as the cladding alloy material; Use powdered alloy that laser cladding method will have a good heat resistanceheat resistant wear resisting property equably cladding on the surface that helps winding up roller, forms tiny evenly, controlled, the high quality of layer depth, with matrix formation excellent metallurgical bonded surface strengthen layer.Strengthening layer can significantly improve the ability that helps winding up roller surface hardness, wear resistance and anti-contact fatigue.
Embodiment
embodiment 1:X company hot rolled plate helps the reparation of winding up roller.
It is the 42CrMo steel alloy that
hot rolled plate helps the body material of winding up roller; The chemical constitution of iron(-)base powder is by weight percentage: C:0.1%, Cr:16%, Ni:5%, Mo:1%, Si:1%, N:0.8%, Nb:0.8%, Ta:0.4%, B:0.4%, surplus is Fe.
its technological process does.
(1) helps the winding up roller surface preparation: to helping the winding up roller finished surface to carry out oil removing, rust cleaning, and clean with alcohol wash under the room temperature.Test defective such as require working position flawless, pore, be mingled with to helping the winding up roller working position with the penetrant inspection method.
selection of (2) powdered alloy and the adjusting of automatic powder feeding device: select for use have good have strong resistance to heat and hard wearing performance and with the good iron(-)base powder of the metallurgical consistency of matrix; Regulate the automatic powder feeding head powder is just in time dropped in the laser molten pool, regulate powder sending quantity and make coat-thickness reach 1.0mm.
(3) light beam regulation: select 10*1mm broadband integral mirror for use, and regulating defocusing amount, to make the laser focusing hot spot be rectangle, spot size: long * is wide=8*1.5mm.
(4) the coating laser melting coating of having strong resistance to heat and hard wearing: select DL-HL-T5000 type CO for use
2
Laser apparatus, worktable are the SIMENS CNC laser processing machine.Adopt the synchronous powder feeding system device that powdered alloy is sent into laser molten pool automatically, high power focused laser beam and automatic powder feeding head are set the rotating speed rotation along helping the winding up roller axial feed, help the winding up roller finished surface to form the laser cladding layer of even compact.
melting and coating process parameter is following.
laser power P=4000W; The focusing rectangle spot size: long * is wide=8*1.5mm; Scan velocity V=400mm/min; Overlapping rate 45%.
Flaw detection after
(5) cladding: test defectives such as working position flawless, pore to helping the winding up roller working position with the penetrant inspection method.
embodiment 2:XX company hot rolled plate helps the reparation of winding up roller.
It is the 42CrMo steel alloy that
hot rolled plate helps the body material of winding up roller; The chemical constitution of iron(-)base powder is by weight percentage: C:0.09%, Cr:15%, Ni:4%, Mo:0.8%, Si:0.8%, N:0.6%, Nb:0.6%, Ta:0.3%, B:0.3%, surplus is Fe.
its technological process does.
(1) helps the winding up roller surface preparation: to helping the winding up roller finished surface to carry out oil removing, rust cleaning, and clean with alcohol wash under the room temperature.Test defective such as require working position flawless, pore, be mingled with to helping the winding up roller working position with the penetrant inspection method.
selection of (2) powdered alloy and the adjusting of automatic powder feeding device: select for use have good have strong resistance to heat and hard wearing performance and with the good iron(-)base powder of the metallurgical consistency of matrix; Regulate the automatic powder feeding head powder is just in time dropped in the laser molten pool, regulate powder sending quantity and make coat-thickness reach 1.4mm.
(3) light beam regulation: select 10*1mm broadband integral mirror for use, and regulating defocusing amount, to make the laser focusing hot spot be rectangle, spot size: long * is wide=9*1mm.
(4) the coating laser melting coating of having strong resistance to heat and hard wearing: select DL-HL-T5000 type CO for use
2
Laser apparatus, worktable are the SIMENS CNC laser processing machine.Adopt the synchronous powder feeding system device that powdered alloy is sent into laser molten pool automatically, high power focused laser beam and automatic powder feeding head are set the rotating speed rotation along helping the winding up roller axial feed, help the winding up roller finished surface to form the laser cladding layer of even compact.
melting and coating process parameter is following.
laser power P=4000W; The focusing rectangle spot size: long * is wide=9*2.0mm; Scan velocity V=400mm/min; Overlapping rate 45%.
Flaw detection after
(5) cladding: test defectives such as working position flawless, pore to helping the winding up roller working position with the penetrant inspection method.
embodiment 3:XXX company hot rolled plate helps the reparation of winding up roller.
It is the 42CrMo steel alloy that
hot rolled plate helps the body material of winding up roller; The chemical constitution of iron(-)base powder is by weight percentage: C:0.06%, Cr:16%, Ni:3%, Mo:0.6%, Si:0.6%, N:0.7%, Nb:0.7%, Ta:0.2%, B:0.2%, surplus is Fe.
its technological process does.
(1) helps the winding up roller surface preparation: to helping the winding up roller finished surface to carry out oil removing, rust cleaning, and clean with alcohol wash under the room temperature.Test defective such as require working position flawless, pore, be mingled with to helping the winding up roller working position with the penetrant inspection method.
selection of (2) powdered alloy and the adjusting of automatic powder feeding device: select for use have good have strong resistance to heat and hard wearing performance and with the good iron(-)base powder of the metallurgical consistency of matrix; Regulate the automatic powder feeding head powder is just in time dropped in the laser molten pool, regulate powder sending quantity and make coat-thickness reach 1.8mm.
(3) light beam regulation: select 10*1mm broadband integral mirror for use, and regulating defocusing amount, to make the laser focusing hot spot be rectangle, spot size: long * is wide=10*1mm.
(4) the coating laser melting coating of having strong resistance to heat and hard wearing: select DL-HL-T5000 type CO for use
2
Laser apparatus, worktable are the SIMENS CNC laser processing machine.Adopt the synchronous powder feeding system device that powdered alloy is sent into laser molten pool automatically, high power focused laser beam and automatic powder feeding head are set the rotating speed rotation along helping the winding up roller axial feed, help the winding up roller finished surface to form the laser cladding layer of even compact.
melting and coating process parameter is following.
laser power P=4000W; The focusing rectangle spot size: long * is wide=10*1mm; Scan velocity V=400mm/min; Overlapping rate 45%.
Flaw detection after
(5) cladding: test defectives such as working position flawless, pore to helping the winding up roller working position with the penetrant inspection method.
Claims (4)
1. a hot rolled plate helps the have strong resistance to heat and hard wearing preparation method of alloy coat of winding up roller surface, it is characterized in that technological process is following:
(1) helps the winding up roller surface preparation
To helping the winding up roller finished surface to carry out oil removing, rust cleaning, cleaning, and the workpiece working position is tested under the room temperature, require working position flawless, pore, inclusion defect;
(2) adjusting of the selection of powdered alloy and automatic powder feeding device
Select for use have good have strong resistance to heat and hard wearing performance and with the good iron(-)base powder of the metallurgical consistency of matrix, its Chemical Composition percentage composition by weight is:
C：0.05～0.1%、Cr：15～16%、Ni：3～5%、Mo：0.6～1%、
Si：0.6～1%、?N：0.6～0.8%、Nb：0.6～0.8%、Ta：0.2～0.4%、
B:0.2～0.4%, surplus are Fe;
(3) light beam regulation
Select 10*1mm broadband integral mirror for use, and regulating defocusing amount, to make the laser focusing hot spot being rectangle, spot size: long * is wide=(7～10) * (1～1.5) mm;
(4) wear-resisting erosion resistance coating laser melting coating
Select DL-HL-T5000 type CO for use
2Laser apparatus, worktable are the SIMENS CNC laser processing machine;
Adopt the synchronous powder feeding system device that powdered alloy is sent into laser molten pool automatically, high power focused laser beam and automatic powder feeding head are set the rotating speed rotation along helping the winding up roller axial feed, help the winding up roller finished surface to form the laser cladding layer of even compact, and the melting and coating process parameter is following:
Laser power P=3500～4500W,
The focusing rectangle spot size: long * is wide=(7～10) * (1～1.5) mm,
Scan velocity V=400～550mm/min,
Overlapping rate 40～70%,
Coat-thickness: 0.7～1.8mm;
(5) flaw detection after the cladding
With the penetrant inspection method conveying roller working position is tested, require working position flawless, gas hole defect.
2. hot rolled plate according to claim 1 helps the have strong resistance to heat and hard wearing preparation method of alloy coat of winding up roller surface; The Chemical Composition that it is characterized in that iron(-)base powder preferably percentage composition by weight is: C:0.1%, Cr:16%, Ni:5%, Mo:1%, Si:1%, N:0.8%, Nb:0.8%, Ta:0.4%, B:0.4%, surplus is Fe.
3. hot rolled plate according to claim 1 helps the have strong resistance to heat and hard wearing preparation method of alloy coat of winding up roller surface; The Chemical Composition that it is characterized in that iron(-)base powder preferably percentage composition by weight is: C:0.09%, Cr:15%, Ni:4%, Mo:0.8%, Si:0.8%, N:0.6%, Nb:0.6%, Ta:0.3%, B:0.3%, surplus is Fe.
4. hot rolled plate according to claim 1 helps the have strong resistance to heat and hard wearing preparation method of alloy coat of winding up roller surface; The Chemical Composition that it is characterized in that iron(-)base powder preferably percentage composition by weight is: C:0.06%, Cr:16%, Ni:3%, Mo:0.6%, Si:0.6%, N:0.7%, Nb:0.7%, Ta:0.2%, B:0.2%, surplus is Fe.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010518713.9A CN102453899B (en) | 2010-10-26 | 2010-10-26 | Preparation method of heat-resistant and wear-resistant alloy coating on surface of wrapper roll of hot rolling sheet |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010518713.9A CN102453899B (en) | 2010-10-26 | 2010-10-26 | Preparation method of heat-resistant and wear-resistant alloy coating on surface of wrapper roll of hot rolling sheet |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013173955A1 (en) * | 2012-05-22 | 2013-11-28 | 山东能源机械集团大族再制造有限公司 | Laser cladding method |
| CN107267978A (en) * | 2017-07-04 | 2017-10-20 | 无锡洲翔激光设备有限公司 | The method that laser melting coating is carried out instead of the coating material of hard chrome plating and with it |
| CN108531904A (en) * | 2018-03-30 | 2018-09-14 | 昆明理工大学 | A kind of wear-resistant coating and preparation method thereof |
| CN109722662A (en) * | 2017-10-30 | 2019-05-07 | 鞍山大陆激光技术有限公司 | A kind of laser melting coating restorative procedure of breast roll |
| CN109778186A (en) * | 2019-03-25 | 2019-05-21 | 北京大陆天瑞激光工程技术有限公司 | A kind of cladding alloy material and its manufacturing method for plate tandem rolling line section cooling roller-way |
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| CN101338427A (en) * | 2008-08-07 | 2009-01-07 | 沈阳大陆激光成套设备有限公司 | Laser fusing and coating process for wear resistant and etch-resistant coating of hydraulic support column cylinder and piston rod |
| CN101709469A (en) * | 2009-12-10 | 2010-05-19 | 中国人民解放军装甲兵工程学院 | Iron-based alloy powder material for plasma cladding quick forming |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101338427A (en) * | 2008-08-07 | 2009-01-07 | 沈阳大陆激光成套设备有限公司 | Laser fusing and coating process for wear resistant and etch-resistant coating of hydraulic support column cylinder and piston rod |
| CN101709469A (en) * | 2009-12-10 | 2010-05-19 | 中国人民解放军装甲兵工程学院 | Iron-based alloy powder material for plasma cladding quick forming |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013173955A1 (en) * | 2012-05-22 | 2013-11-28 | 山东能源机械集团大族再制造有限公司 | Laser cladding method |
| EP2708621A1 (en) * | 2012-05-22 | 2014-03-19 | Shandong Energy Machinery Group Han's Remanufacturing Co. Ltd. | Laser cladding method |
| EP2708621A4 (en) * | 2012-05-22 | 2014-12-03 | Shandong Energy Machinery Group Han S Remfg Co Ltd | Laser cladding method |
| AU2012380415B2 (en) * | 2012-05-22 | 2015-09-10 | Shandong Energy Machinery Group Han's Remanufacture Co., Ltd | Laser cladding method |
| RU2624747C2 (en) * | 2012-05-22 | 2017-07-06 | Шаньдун Энерджи Машинери Груп Хан'С Римэньюфэкчер Ко., Лтд | Method for laser cladding |
| CN107267978A (en) * | 2017-07-04 | 2017-10-20 | 无锡洲翔激光设备有限公司 | The method that laser melting coating is carried out instead of the coating material of hard chrome plating and with it |
| CN109722662A (en) * | 2017-10-30 | 2019-05-07 | 鞍山大陆激光技术有限公司 | A kind of laser melting coating restorative procedure of breast roll |
| CN108531904A (en) * | 2018-03-30 | 2018-09-14 | 昆明理工大学 | A kind of wear-resistant coating and preparation method thereof |
| CN109778186A (en) * | 2019-03-25 | 2019-05-21 | 北京大陆天瑞激光工程技术有限公司 | A kind of cladding alloy material and its manufacturing method for plate tandem rolling line section cooling roller-way |
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| Publication number | Publication date |
|---|---|
| CN102453899B (en) | 2014-12-10 |
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