CN100575553C - A kind of laser cladding Co-based alloy powder for conductor roll - Google Patents
A kind of laser cladding Co-based alloy powder for conductor roll Download PDFInfo
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- CN100575553C CN100575553C CN200710158808A CN200710158808A CN100575553C CN 100575553 C CN100575553 C CN 100575553C CN 200710158808 A CN200710158808 A CN 200710158808A CN 200710158808 A CN200710158808 A CN 200710158808A CN 100575553 C CN100575553 C CN 100575553C
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- alloy
- based alloy
- laser cladding
- alloy powder
- conductor roll
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Abstract
Laser cladding Co-based alloy powder for conductor roll mainly contains in the Chemical Composition of described material: by weight percentage for Cr 23～25%, Mo 14～16%, W 5～8%, Fe 6～10%, Co 3～5%, V 0.1～0.6%, Mn 0.5～2%, Si 0.2～2%, also contain Y
2O
30.1～0.5%, Hf 0.1～0.5%, La
2O
30.1～0.5%, among the Ce 0.1～0.5% at least two kinds; Ni: surplus.The present invention is by multiple reinforcement means, and the reinforced alloys matrix has improved the crystal boundary quality again, makes alloy obtain good comprehensive performances.Thereby realized that alloy when having moderate hardness and intensity, has reduced alloy melting point again, increased anti-oxidant, wear-resisting, corrosion resisting property, also had certain electric conductivity.The conductive rollers part of successfully repairing after the inefficacy for metallurgy industry provides a kind of effective convenient method.
Description
Technical field:
The present invention relates to Materials science, the laser cladding Co-based alloy powder for conductor roll that moderate, anti-oxidant, corrosion-resistant, the anti-grindability of a kind of hardness is good, have superior cladding performance is provided.
Background technology:
Laser melting coating along with improving constantly of laser power and stability, has obtained rapid popularization and widespread use as a kind of advanced person's re-manufacturing technology.Laser melting coating is to obtain and the firm metallurgical binding of matrix in the metallic surface, and the advanced re-manufacturing technology of the high-performance surface coating of defective such as pore-free, crackle, it can be with dystectic alloy material cladding at low-melting substrate surface, also can on low-cost base material, prepare high performance top coat, to replace senior in a large number, high performance integral material, save noble metal, reduce the component cost.Laser melting coating has solved many ordinary methods and has been difficult to the problem that processing maybe can't be processed, and making for product provides a kind of technology uniqueness, advanced effective means again.
At present, the powdered alloy of laser melting coating special use is actually rare on the domestic and international market, especially have hardness moderate, be easy to process, the Co-based alloy powder of the superior characteristic such as stable of over-all properties is unique especially.Basically be to adopt surfacing or spraying to use powdered alloy, or on the basis of these powder, allocated, and prepare required various Co-based alloy powders with the form of powder mixing machine by different ratios.
That these powder mixs exist is inhomogeneous such as mixing, granularity difference is big, fusing point is different, composition deviation, the equal problem of the coefficient of expansion, causes in actual cladding uncontrollable crackle, pore, segregation, performance shakiness, is difficult for defectives such as machine adds.A kind of moderate cost is expected in market, excellent property is stable, hardness is suitable, machine adds Co-based alloy powder easily, is exclusively used in laser melting coating, solves preferred clad material problem in the electro-galvanizing unit key equipment conductive rollers actual repair.
Summary of the invention:
The purpose of this invention is to provide moderate, anti-oxidant, corrosion-resistant, the wear-resisting laser melting coating Co-based alloy powder of cutting stable performance, having conductive characteristic of a kind of hardness, be exclusively used in the employing laser cladding method, repair the operation of this re-manufacturing technology of conductive rollers parts.
Laser cladding Co-based alloy powder for conductor roll material of the present invention is characterized in that: described material laser cladding Co-based alloy powder is on nickel chromium triangle miramint basis, adds elements such as Co, V, Si, Mn, Fe and carries out that alloy substrate strengthens.
Laser cladding Co-based alloy powder for conductor roll material of the present invention is characterized in that: described nickel-base alloy powder powder material is on above-mentioned alloy ingredient basis, adds Y at least
2O
3, La
2O
3, among Ce and the Hf at least two kinds carry out matrix grain refinement and grain-boundary strengthening.
By adding alloy substrate strengthening element, grain refining grain-boundary strengthening element, and adjust the degree of each element, make alloy obtain superior over-all properties.Thereby realized that alloy when having moderate hardness, intensity and conductivity, has reduced alloy melting point again, increased wear-resisting, corrosion resisting property.Fundamentally solve and improved splitting resistance, formability, technology stability and the composition uniformity of powdered alloy in laser cladding layer, satisfied the over-all properties requirement of remanufactured component cladding layer heatproof, anti-corrosion, wear-resisting, antifatigue, conduction and higher-strength etc.
Laser cladding Co-based alloy powder for conductor roll material of the present invention is by the preparation meticulously of operations such as vacuum melting, aerosolization, screening, and granularity is 100～270 orders.
Laser cladding Co-based alloy powder for conductor roll of the present invention, mainly contain in the Chemical Composition of described material: (weight percent) is Cr 23～25%, Mo 14～16%, W 5～8%, Fe 6～10%, Co 3～5%, V 0.1～0.6%, Mn 0.5～2% and Si 0.2～2%; Also contain Y in the Chemical Composition of above-mentioned materials
2O
30.1～0.5%, Hf 0.1～0.5%, La
2O
30.1～0.5% and Ce 0.1～0.5% at least two kinds; Ni is a surplus.
The method for preparing laser cladding Co-based alloy powder for conductor roll comprises following process:
With Ni, Cr, Mo, W, Co, V, Fe, Si, Mn and Y
2O
3, La
2O
3, among Ce and the Hf at least two kinds.By putting into medium-frequency induction furnace after the above-mentioned weight percent extraction, under argon gas atmosphere, be heated to 1450-1550 ℃, powder is melted fully and mix, bottom pour ladle crucible with melt metal liquid streamer entry atomising unit, below the bottom pour ladle crucible, be equipped with water atomizing nozzle, when melt metal liquid stream was flowed through nozzle by the water conservancy diversion mouth, the high velocity flow that is penetrated by nozzle smashed into small droplets, alloy liquid droplet drops on and is frozen into powder in the water subsequently.
Laser cladding Co-based alloy powder for conductor roll of the present invention can adopt 2000～5000W continuous CO that flows in actual cladding operation
2Laser apparatus uses in the cladding on electro-galvanizing unit key equipment conductive rollers part.The melting and coating process parameter of using described powdered material is: power: 1600～4500W, and focal length: 300～400mm, spot diameter: 3～6mm, sweep velocity: 240～400mm/min puts powder thickness: 0.3～0.8mm.
Laser cladding Co-based alloy powder for conductor roll material of the present invention is mainly used in the laser repairing of metallurgy industry electro-galvanizing unit key equipment conductive rollers part.
The invention has the advantages that: described material laser cladding Co-based alloy powder for conductor roll is on nickel chromium triangle miramint basis, adds alloy substrate strengthening element, grain refining and grain-boundary strengthening element, and adjusts the degree of each element.By multiple reinforcement means, the reinforced alloys matrix has improved the crystal boundary quality again, makes alloy obtain good comprehensive performances.Thereby realized that alloy when having moderate hardness and intensity, has reduced alloy melting point again, increased anti-oxidant, wear-resisting, corrosion resisting property, also had certain electric conductivity.Fundamentally solve and improved splitting resistance, formability, technology stability and the composition uniformity of powdered alloy in laser cladding layer, satisfied remanufactured component and should have over-all properties requirements such as anti-oxidant, anti-corrosion, wear-resisting, antifatigue and moderate hardness and intensity, certain electroconductibility cladding layer.This powdered material is suitable for electro-galvanizing unit key equipment conductive rollers part laser melting coating, has solved the reparation difficult problem after the conductive rollers corrosive wear, and the conductive rollers part of successfully repairing after the inefficacy for metallurgy industry provides a kind of effective convenient method.
Embodiment
Embodiment one
A kind of laser cladding Co-based alloy powder for conductor roll includes in this alloy ingredient: Ni, Cr, Mo, W, Co, V, Fe, Si, Mn, also contain Y in the alloy ingredient
2O
3, La
2O
3, Ce, its Chemical Composition is by weight percentage: Cr:23%, Mo:14%, W:5%, Fe:7%, Co:3%, V:0.2%, Mn:0.8%, Si:0.5%, Y
2O
3: La 0.3%,
2O
3: 0.3% and Ce:0.3%; Ni: surplus.
Its preparation method comprises following process:
1, with Ni, Cr, Mo, W, Co, V, Fe, Si, Mn and Y
2O
3, La
2O
3, Ce is by above-mentioned weight percent proportioning, is ready to make the starting material of metal-powder.
2, start intermediate frequency, by the requirement of melting technology, put into metal and begin melting, the metal of general easy oxidation was put in the later stage of fusing.Temperature of fusion is greatly about 1400-1450 ℃.
3, the metal when this stove all after the fusing, carries out slag making in stove, removes the impurity in the molten metal.
4, enter refining period then and carry out refining, add reductor before the cast and carry out deoxidation.
5, cast steel ingot, after the demoulding cooling, the analytical chemistry composition.Change next procedure after qualified over to.
6, alloy material is reloaded in the smelting furnace of powder manufacturing apparatus, through after melting → slagging-off → deoxidation → refining, begin to carry out the atomizing of metal-powder, normal nebulisation time is about five～20 minutes.
7, will after the constraint back of leting slip a remark becomes the molten metal bath stream of a thread to cut, be atomized into atomic little molten drop to fusing from the high pressure gas of gas cylinder as air knife, final set becomes powdered alloy.
8, the metal-powder after solidifying, still oxidation quite easily when high temperature so must allow its cool to room temperature under the environment of anaerobic or hypoxemia, could reduce the oxygen level of powder.
9, dried metal-powder, the chemical examination of Chemical Composition is carried out in sampling earlier,, sieves the packing warehouse-in again if qualified by user's requirement.
Embodiment two
A kind of laser cladding Co-based alloy powder for conductor roll includes in this alloy ingredient: Ni, Cr, Mo, W, Co, V, Fe, Si, Mn, also contain Y in the alloy ingredient
2O
3, Hf, Ce, its Chemical Composition by weight percentage: Cr:24%; Mo:15%; W:7%; Fe:8%; Co:4%; V:0.4%; Mn:1.2%; Si:1.2%; Y
2O
3: 0.4%; Hf:0.4%; Ce:0.4%; Ni: surplus.
Its preparation method is identical with embodiment one.
Embodiment three
A kind of laser cladding Co-based alloy powder for conductor roll includes in this alloy ingredient: Ni, Cr, Mo, W, Co, V, Fe, Si, Mn, also contain La in the alloy ingredient
2O
3, Ce, Hf, its Chemical Composition is by weight percentage: Cr:25%; Mo:16%; W:8%; Fe:9%; Co:5%; V:0.5%; Mn:1.5%; Si:1.8%; La
2O
3: 0.5%; Hf:0.5%; Ce:0.5%; Ni: surplus.
Its preparation method is identical with embodiment one.
Claims (4)
1, laser cladding Co-based alloy powder for conductor roll is characterized in that mainly containing in the Chemical Composition of described material: Cr 23～25%, Mo 14～16%, W 5～8%, Fe 6～10%, Co 3～5%, V 0.1～0.6%, Mn 0.5～2% and Si 0.2～2% by weight percentage; Also contain Y by weight percentage in the alloy ingredient
2O
30.1～0.5%, Hf 0.1～0.5%, La
2O
30.1～0.5% and Ce 0.1～0.5% at least two kinds, Ni: surplus.
2, laser cladding Co-based alloy powder for conductor roll according to claim 1 is characterized in that its Chemical Composition is by weight percentage: Cr:23%; Mo:14%; W:5%; Fe:7%; Co:3%; V:0.2%; Mn:0.8%; Si:0.5%; Y
2O
3: 0.3%; La
2O
3: 0.3%; Ce:0.3%; Ni: surplus.
3, laser cladding Co-based alloy powder for conductor roll according to claim 1 is characterized in that its Chemical Composition is by weight percentage: Cr:24%; Mo:15%; W:7%; Fe:8%; Co:4%; V:0.4%; Mn:1.2%; Si:1.2%; Y
2O
3: 0.4%; Hf:0.4%; Ce:0.4%; Ni: surplus.
4, laser cladding Co-based alloy powder for conductor roll according to claim 1 is characterized in that its Chemical Composition is by weight percentage: Cr:25%; Mo:16%; W:8%; Fe:9%; Co:5%; V:0.5%; Mn:1.5%; Si:1.8%; La
2O
3: 0.5%; Hf:0.5%; Ce:0.5%; Ni: surplus.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710158808A CN100575553C (en) | 2007-12-11 | 2007-12-11 | A kind of laser cladding Co-based alloy powder for conductor roll |
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|---|---|---|---|
| CN200710158808A CN100575553C (en) | 2007-12-11 | 2007-12-11 | A kind of laser cladding Co-based alloy powder for conductor roll |
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|---|---|
| CN101187023A CN101187023A (en) | 2008-05-28 |
| CN100575553C true CN100575553C (en) | 2009-12-30 |
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| CN103320788A (en) * | 2013-06-18 | 2013-09-25 | 江苏和昊激光科技有限公司 | Special nickel-based metal ceramic alloy powder for laser cladding of surface of cylinder liner |
| CN103924238B (en) * | 2014-04-25 | 2016-08-17 | 山东大学 | Laser Cladding Ni-base Alloy+B on Q550 steel4c strengthens the method for phase |
| CN106854717B (en) * | 2015-12-08 | 2018-08-28 | 沈阳大陆激光技术有限公司 | A kind of Co-based alloy powder of laser manufacture ejection roller way of continuous casting machine |
| CN107435118A (en) * | 2017-08-02 | 2017-12-05 | 马鞍山市万鑫铸造有限公司 | A kind of method that spheroidal graphite cast-iron and its Cast Iron Surface laser melting coating produce coating |
| CN108161275B (en) * | 2018-01-08 | 2021-02-02 | 河北工业大学 | Nickel-based alloy weld structure grain refinement method and application thereof |
| CN109536950A (en) * | 2018-12-12 | 2019-03-29 | 江苏大学 | A kind of composite powder improving aluminum alloy heat fatigue behaviour by Laser Cladding Treatment |
| CN110331397A (en) * | 2019-07-08 | 2019-10-15 | 扬州安泰威合金硬面科技有限公司 | A kind of laser melting coating high temperature oxidation resisting coating Co-based alloy powder |
| CN110238383A (en) * | 2019-07-29 | 2019-09-17 | 常山县双明轴承有限公司 | Mould steel laser melting coating is remanufactured with alloy powder and preparation method thereof |
| CN112011713B (en) * | 2020-08-30 | 2021-11-23 | 中南大学 | Method for eliminating cracks of 3D printing nickel-based superalloy |
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2007
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