CN110230052A - The method of laser melting coating preparation function roller-way - Google Patents
The method of laser melting coating preparation function roller-way Download PDFInfo
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- CN110230052A CN110230052A CN201910559192.2A CN201910559192A CN110230052A CN 110230052 A CN110230052 A CN 110230052A CN 201910559192 A CN201910559192 A CN 201910559192A CN 110230052 A CN110230052 A CN 110230052A
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- Prior art keywords
- cladding
- way
- function roller
- roller
- melting coating
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C30/00—Alloys containing less than 50% by weight of each constituent
- C22C30/02—Alloys containing less than 50% by weight of each constituent containing copper
-
- 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
- C23C24/106—Coating with metal alloys or metal elements only
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
Abstract
The present invention provides a kind of method of laser melting coating preparation function roller-way, the method for the laser melting coating preparation function roller-way includes: step A: preparing cladding material；After the cladding material is by copper sheet or copper billet, nichrome, graphite, nickel plate and tungsten rod mixing, through high temperature melt at solidliquid mixture, then solid cladding powder is made in the solidliquid mixture by melting；Step C: using the cladding material prepared in step A, cladding is carried out to function roller-way substrate with laser melting coating.The invention has the benefit that substantially increasing function roller-way high temperature resistant, wear-resisting performance, increasing service life high temperature resistant, wear-resisting alloy material cladding on the surface of function roller-way.
Description
Technical field
The present invention relates to hot rolling fields, and in particular to a kind of method of laser melting coating preparation function roller-way.
Background technique
Function roller-way includes deflector roll, conveying roller, loop back roll, slewing rollers or breast roll, contributes to conveying effect, and defeated
Part is sent directly all to there is rolling friction, in the case where high temperature high speed, function roller table surface can all occur as caused by abrasion
Groove, after a period of use, it is necessary to replace, influence the normal operation of production line, also influence conveying quality.In order to enhance function
Can roller-way wear-resisting property, the prior art is in one layer of hard alloy coating of function roller-way surface laser cladding, but after cladding, heat
It rolls bar skirthoard track surface and is easy to appear crackle, influence the use of roller-way.
In conclusion following problems exist in the prior art: existing function roller-way uses laser melting coating, and roller table surface holds
Easily cracked, wear-resisting property is poor.
Summary of the invention
The present invention provides a kind of method of laser melting coating preparation function roller-way, to solve existing function roller-way using laser
Cladding, roller table surface are easy to appear crackle, the problem of wear-resisting property difference.
For this purpose, a kind of method that the present invention proposes laser melting coating preparation function roller-way, the laser melting coating prepares functional roller
The method in road includes:
Step A: cladding material is prepared；The cladding material is by copper sheet or copper billet, nichrome, graphite, nickel plate and tungsten rod
After mixing, through high temperature melt at liquid, then solid cladding powder is made in the liquid by melting；
Step C: using the cladding material prepared in step A, cladding is carried out to function roller-way substrate with laser.
Further, in step C, using gas laser carry out cladding, cladding power 2800-3500W, cladding with a thickness of
1.6mm to 2mm.
Further, in step C, using gas laser carry out cladding, cladding power 3000-3300W, cladding with a thickness of
1.8mm。
Further, in step C, cladding is carried out using gas laser, cladding power 3400W, cladding is with a thickness of 2mm.
Further, solid cladding powder is sent into the top of function roller-way substrate using gravity powder feeder.
Further, the function roller-way is deflector roll, conveying roller, the loop back roll, steering used on hot-strip production line
Roller or breast roll.
Further, the specific production method of the cladding material are as follows: copper, nichrome, graphite, nickel plate and tungsten rod are in vacuum
In smelting furnace, through 1650 to 1850 degree high temperature, it is melted into solidliquid mixture in a vacuum, then the solidliquid mixture by melting passes through
Gas atomization, is made solid cladding powder, and partial size is 100 mesh to 270 mesh.
Further, the component of the solid cladding powder are as follows: calculate by percentage to the quality, Cu:10%-20%, W:
30%-40%, C:1%-4%, Si: less than be equal to 1%, Fe: less than are equal to 1%, Cr: less than be equal to 1%, surplus Ni.
Further, in step C, cladding is carried out using semiconductor laser and optical fiber laser.
Further, further include step B: before cladding, the surface of function roller-way substrate being cleared up, the cleaning packet
Include the pickling on the surface to function roller-way substrate.
The invention has the benefit that high temperature resistant, wear-resisting alloy material cladding are mentioned significantly on the surface of function roller-way
High function roller-way high temperature resistant, wear-resisting performance, increase service life.In addition, the present invention is relative to existing laser melting coating
Mode, since cladding is not by the mixing of simple solid powder and stirring shape in the cladding material of function roller table surface
At, but solid cladding powder is re-formed by forming mixability alloy solid-liquid mixed phase more evenly after atomization, when cladding,
Between solid cladding powder on roller table surface more evenly, roller table surface radially divides with the circumferential solid cladding powder that is all not present
The difference of cloth uniformity, therefore, after cladding, roller table surface cladding more evenly than existing melting and coating technique, reduces the generation of crackle,
Prevent plowing from the steel on function roller-way.
In addition, roller table surface is radially since the difference of solid cladding powder distribution uniformity is not present in roller table surface
On through-thickness, in cladding thickness range, the cladding effect of cladding powder be all it is identical, ensure that thickness side in this way
Upward cladding quality, the phenomenon that avoiding the position agglomeration having on thickness direction or form crackle.
In turn, since the difference of solid cladding powder distribution uniformity is not present in roller table surface, there is no component segregation and
It is difficult to the phenomenon that solid powder melted forms localized agglomeration, therefore, in cladding process, it is no longer necessary to which gas laser is using strong
Power and strong light carry out cladding, and power needed for cladding can be greatly lowered, can than existing solid state mixing and stir
It mixes the cladding material to be formed and saves power up to 20% or more, be on the one hand to save electric power and cost on the other hand to reduce gas
The power requirement of body laser, can be smaller using volume, and the lower equipment of cost reduces the requirement of equipment, has accomplished section
It can consumption reduction.
In turn, since the difference of solid cladding powder distribution uniformity is not present in roller table surface, there is no component segregation and
It is difficult to the phenomenon that solid powder melted forms localized agglomeration, even if in cladding process, cladding material is thicker, is not improving power
In the case where, gas laser can carry out cladding to thicker cladding material.The limiting value of existing cladding thickness in 1.5mm,
The present invention can reach 1.8mm, or even arrive 2mm, in this way, undoubtedly improving the service life and abrasion resistant effect of roller-way.
Under normal circumstances, the present invention can reach 1,000,000 tons of steel transportation amount roller-way abrasion loss radial directions less than 2mm.
Specific embodiment
For a clearer understanding of the technical characteristics, objects and effects of the present invention, now illustrate the present invention.
A kind of method that the present invention proposes laser melting coating preparation function roller-way, the side of the laser melting coating preparation function roller-way
Method includes:
Step A: cladding material is prepared；The cladding material is by copper sheet or copper billet, nichrome, graphite, nickel plate and tungsten rod
After broken, such as after being broken into graininess, mixed, through high temperature melt at solidliquid mixture, then by solidliquid mixture
Solid cladding powder is made；High temperature is 1650 degree or more, and copper, nichrome can be made to be melted into liquid and be wrapped in tungsten and graphite week
It encloses to form uniform solidliquid mixture；Cladding material is formed by way of atomization, in this way than two or more solid cladding materials
The cladding material that material is made by mechanical mixture mode has a better uniformity, and when cladding can avoid agglomerating or that agglomerates shows
As；Although like the prior art, but cladding material comparison of ingredients is uniform for last appearance for cladding material made of in this way,
Difference between powder is smaller, is more suitable for laser melting coating；
Step C: using the cladding material prepared in step A, cladding is carried out to function roller-way substrate with laser melting coating.It will be resistance to
High temperature, wear-resisting alloy material cladding substantially increase function roller-way high temperature resistant, wear-resisting performance on the surface of function roller-way,
Increase service life.In addition, mode of the present invention relative to existing laser melting coating, since cladding is in function roller table surface
Cladding material is not formed by the mixing of simple solid powder and stirring, more equal by forming mixability after atomization
Even alloy solid-liquid mixed phase re-forms solid cladding powder, when cladding, between the solid cladding powder on roller table surface more
Even, the difference of solid cladding powder distribution uniformity radially and is circumferentially all not present in roller table surface, therefore, after cladding, roller-way
Surface cladding more evenly than existing melting and coating technique, reduces the generation of crackle, prevents plowing from the steel on function roller-way.
Further, in step C, using gas laser carry out cladding, cladding power 2800-3500W, cladding with a thickness of
1.6mm to 2mm.The prior art, if solid cladding powder is sent into function roller-way using gravity powder feeder and gas powder feeder
The top of substrate can then generate component segregation and be difficult to the phenomenon that solid powder melted forms localized agglomeration, roller-way after cladding
Surface will form crackle.Solid cladding powder is sent into the top of function roller-way substrate using gravity powder feeder by the present invention, due to
The difference of solid cladding powder distribution uniformity is not present in roller table surface, and there is no component segregations and the solid powder for being difficult to melt
The phenomenon that forming localized agglomeration, even if in cladding process, cladding material is thicker, in the case where not improving power, gas laser
Device can carry out cladding to thicker cladding material.The limiting value of existing cladding thickness can reach in 1.5mm, the present invention
1.8mm, or even 2mm is arrived, in this way, undoubtedly improving the service life and abrasion resistant effect of roller-way.
In step C, cladding can also be carried out using semiconductor laser and optical fiber laser, it is high-efficient.
Further, in step C, using gas laser carry out cladding, cladding power 3000-3300W, cladding with a thickness of
1.8mm.Condenser f=3mm*1mm is perhaps that f=4mm*2mm is perhaps f=6mm*3mm or is f=10mm*1mm.It is molten
Cover scanning speed be 200mm/ minutes to 800mm/ minutes, for example, 300mm/ minutes, 400mm/ minutes, overlapping rate 35%,
40% or 45%.It after laser melting coating, is machined using grinding, until the surface quality and size that need.
Since the difference of solid cladding powder distribution uniformity is not present in roller table surface, there is no component segregation and it is difficult to melt
The solid powder of change forms the phenomenon that localized agglomeration, therefore, in cladding process, it is no longer necessary to gas laser using high power and
Strong light carries out cladding, and power needed for cladding can be greatly lowered, and can be formed than the mixing and stirring of existing solid state
Cladding material save power up to 20% or more, be on the one hand to save electric power and cost on the other hand to reduce gas laser
The power requirement of device, can be smaller using volume, and the lower equipment of cost reduces the requirement of equipment, accomplished energy-saving.
Further, in step C, cladding is carried out using gas laser, cladding power 3400W, cladding is with a thickness of 2mm.
Power is lower in this way, saves the energy.
Further, solid cladding powder is sent into the top of function roller-way substrate using gravity powder feeder, in this way, can subtract
The evolution and loss of few powder.
Further, the function roller-way is deflector roll, conveying roller, the loop back roll, steering used on hot-strip production line
Roller or breast roll improve in this way, can increase the wear-resisting property of deflector roll, conveying roller, loop back roll, slewing rollers or breast roll and use the longevity
Life.
Further, the specific production method of the cladding material are as follows: copper, nichrome, graphite, nickel plate and tungsten rod are in vacuum
In smelting furnace, through 1650 to 1850 degree high temperature, it is melted into solidliquid mixture in a vacuum, then the solidliquid mixture by melting passes through
Gas atomization, is made solid cladding powder, and partial size is 100 mesh to 270 mesh.The although last shape of cladding material made of in this way
State is all powder like the prior art, but powdered ingredients are relatively uniform, and the difference between powder is smaller, and it is molten to be more suitable for laser
It covers.
Further, the component of the solid cladding powder are as follows: calculate by percentage to the quality, Cu:10%-20%, W:
30%-40%, C:1%-4%, Si: less than be equal to 1%, Fe: less than are equal to 1%, Cr: less than be equal to 1%, surplus Ni.It should
Component can be such that the wear-resisting property, fatigue performance and service life of function roller-way is all improved obviously.The present invention can reach
1000000 tons of steel transportation amount roller-way abrasion loss radial directions are less than 2mm.
Further, further include step B: before cladding, the surface of function roller-way substrate being cleared up, the cleaning packet
Include the pickling on the surface to function roller-way substrate；Function roller-way substrate is the main body of function roller-way, i.e. deflector roll, conveying roller, loop
Roller, slewing rollers or breast roll or the main body for waiting the rotation roller-way in rolling line and red steel generation rolling friction, it is, without molten
Cover the roll body of the function roller-way of material.
The foregoing is merely the schematical specific embodiment of the present invention, the range being not intended to limit the invention.For this
Each component part of invention can be combined with each other under conditions of not conflicting, any those skilled in the art, not depart from this
Made equivalent changes and modifications, should belong to the scope of protection of the invention under the premise of the conceptions and principles of invention.
Claims (10)
1. a kind of method of laser melting coating preparation function roller-way, which is characterized in that the side of the laser melting coating preparation function roller-way
Method includes:
Step A: cladding material is prepared；After the cladding material is mixed by copper, nichrome, graphite, nickel plate and tungsten rod, through high temperature
It is melted into solidliquid mixture, then solid cladding powder is made by solidliquid mixture；
Step C: using the cladding material prepared in step A, cladding is carried out to function roller-way substrate with laser.
2. the method for laser melting coating preparation function roller-way as described in claim 1, which is characterized in that in step C, using gas
Laser carries out cladding, and cladding power 2800-3500W, cladding is with a thickness of 1.6mm to 2mm.
3. the method for laser melting coating preparation function roller-way as described in claim 1, which is characterized in that in step C, using gas
Laser carries out cladding, and cladding power 3000-3300W, cladding is with a thickness of 1.8mm.
4. the method for laser melting coating preparation function roller-way as described in claim 1, which is characterized in that in step C, using gas
Laser carries out cladding, and cladding power 3400W, cladding is with a thickness of 2mm.
5. the method for laser melting coating preparation function roller-way as described in claim 1, which is characterized in that will using gravity powder feeder
The top of solid cladding powder feeding function roller-way substrate.
6. the method for laser melting coating preparation function roller-way as described in claim 1, which is characterized in that the function roller-way is heat
Deflector roll, conveying roller, loop back roll, slewing rollers or the breast roll used on steel rolling material production line.
7. the method for laser melting coating preparation function roller-way as described in claim 1, which is characterized in that the cladding material is specific
Production method are as follows: copper, nichrome, graphite, nickel plate and tungsten rod are in vacuum smelting furnace, through 1650 to 1850 degree high temperature, true
It is melted into solidliquid mixture in the air, then the solidliquid mixture by melting passes through gas atomization, and solid cladding powder, partial size is made
For 100 mesh to 270 mesh.
8. the method for laser melting coating preparation function roller-way as described in claim 1, which is characterized in that the solid cladding powder
Component are as follows: calculate by percentage to the quality, Cu:10%-20%, W:30%-40%, C:1%-4%, Si: less than be equal to 1%,
Fe: less than being equal to 1%, Cr: less than is equal to 1%, surplus Ni.
9. the method for laser melting coating preparation function roller-way as described in claim 1, which is characterized in that in step C, using gas
Laser, semiconductor laser or optical fiber laser carry out cladding.
10. the method for laser melting coating preparation function roller-way as described in claim 1, which is characterized in that further include step B:
Before cladding, the surface of function roller-way substrate is cleared up, the cleaning includes the pickling to the surface of function roller-way substrate.
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| CN201910559192.2A CN110230052A (en) | 2019-06-26 | 2019-06-26 | The method of laser melting coating preparation function roller-way |
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| CN201910559192.2A CN110230052A (en) | 2019-06-26 | 2019-06-26 | The method of laser melting coating preparation function roller-way |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114438490A (en) * | 2022-01-25 | 2022-05-06 | 河北恒韧增材制造有限公司 | Process for preparing functional roller way through laser cladding |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114438490A (en) * | 2022-01-25 | 2022-05-06 | 河北恒韧增材制造有限公司 | Process for preparing functional roller way through laser cladding |
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Application publication date: 20190913 |