CN104195548A - Zinc-corrosion-resistant coating cobalt-based alloy powder for laser cladding - Google Patents
Zinc-corrosion-resistant coating cobalt-based alloy powder for laser cladding Download PDFInfo
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- CN104195548A CN104195548A CN201410460532.3A CN201410460532A CN104195548A CN 104195548 A CN104195548 A CN 104195548A CN 201410460532 A CN201410460532 A CN 201410460532A CN 104195548 A CN104195548 A CN 104195548A
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Abstract
The invention belongs to the technical field of chemistry and metallurgy and particularly relates to a zinc-corrosion-resistant coating cobalt-based alloy powder for laser cladding. The powder comprises the following components in percentages by mass: 24-30% of Cr, 3-8% of Mo, 0.8-2% of W, 1.5-4% of Ni, 1-2.5% of V, 0.3-1% of Fe, 0.5-1% of Si, and is characterized by further comprising 0.1-0.3% of Y2O3, 0.1-0.3% of Hf and the balance of Co. According to the powder disclosed by the invention, the crack resistance, the formability, the stability of process and the uniformity of the components of the cobalt-based alloy powder in the laser cladding layer are improved and the requirements of a processing part on comprehensive performances, such as zinc corrosion resistance, wear resistance, fatigue resistance and moderate hardness of the cladding layer are met.
Description
Technical field
The invention belongs to chemistry, metallurgical technology field, relate to a kind of cobalt-based alloy powder powder material that is suitable for laser melting coating, particularly relate to a kind of laser melting coating Zinc-corrosion resistant coating Co-based alloy powder.
Background technology
At present, Zinc-corrosion resistant coating both domestic and external adopts the traditional technologys such as spraying, surfacing to make more, the problem that the Zinc-corrosion resistant coating that these traditional technologys make has some to be difficult to overcome.Such as: Zinc-corrosion resistant layer actual work ergosphere is very thin; Manufacture the defect such as easily produce pore in coating procedure, be mingled with; Coating and mother metal bonding surface are non-metallurgical binding, and coating is prone to the problem such as come off.Adopt laser melting and coating technique to manufacture Zinc-corrosion resistant coating and can effectively overcome the above problems, and greatly reduce the processing condition requirement of manufacturing Zinc-corrosion resistant coating, reduced cost simultaneously.
Laser melting coating, as a kind of advanced person's Metal Surface Modification Technique, along with improving constantly of laser power and stability, has obtained rapid popularization and widespread use.Laser melting coating is to obtain and the firm metallurgical binding of matrix in metallic surface, and the advanced process for modifying surface of the high-performance surface coating of pore-free, defects i.e.cracks, it can be by dystectic alloy material cladding the substrate surface in low melting point, also can on low-cost substrates, prepare high performance top coat, to replace senior, high performance integral material in a large number, save noble metal, reduce component cost.Laser melting coating has solved many ordinary methods and has been difficult to the problem that processing maybe cannot be processed, for surface of workpiece modification provides a kind of technology uniqueness, advanced effective means.
Co-based alloy powder has its special advantage in Zinc-corrosion resistant field.But the special Co-based alloy powder of laser melting coating is actually rare in the market, and the Co-based alloy powder that the traditional technologys such as surfacing, spraying are used is allocated by different ratios, and is prepared required Co-based alloy powder with the form of powder mixing machine.
These mix Co-based alloy powders exist inhomogeneous such as mixing, granularity difference is large, fusing point is different, the equal problem of composition deviation, the coefficient of expansion, cause in actual cladding uncontrollable crackle, pore, segregation, performance shakiness, be difficult for the defects such as machine adds.
Though these Co-based alloy powders for laser melting coating can be obtained certain technique effect on the specific equipment unit of reparation, but owing to thering is self technology characteristics, can't meet and be applicable to the processing requirement of other specific base material laser melting coating, particularly can not meet the requirement that also will meet the Zinc-corrosion resistant performance to cladding layer in splitting resistance, formability, technology stability and the homogeneity of ingredients of Co-based alloy powder in laser cladding layer.
Therefore, what research and development made new advances has laser melting coating Zinc-corrosion resistant ability, stable performance Zinc-corrosion resistant coating Co-based alloy powder, is the key subjects in described technical field.
Summary of the invention
In order to solve the problem in background technology, the invention provides a kind of laser melting coating Zinc-corrosion resistant ability, stable performance Zinc-corrosion resistant coating Co-based alloy powder that has.
Concrete technical scheme of the present invention is:
Zinc-corrosion resistant coating Co-based alloy powder for a kind of laser melting coating, includes Cr, Mo, Ni, W, Mo, Si, V, Fe, Co, it is characterized in that: also comprise Y
2o
3, Hf, wherein the mass percent of each component is:
Cr:24～30%; Mo:3～8%; W:0.8～2%; Ni:1.5～4%; V:1～2.5%; Fe:0.3～1%; Si:0.5～1%; Y
2o
3: 0.1～0.3%; Hf:0.1～0.3%; Co: surplus.
Zinc-corrosion resistant coating Co-based alloy powder for above-mentioned laser melting coating, is characterized in that: the preferred version of the mass percent of each component is:
Cr:24%; Mo:3%; W:0.8%; Ni:1.5%; V:1%; Fe:1%; Si:0.5%; Y
2o
3: 0.1%; Hf:0.1%; Co: surplus.
Zinc-corrosion resistant coating Co-based alloy powder for above-mentioned laser melting coating, is characterized in that: another preferred version of the mass percent of each component is:
Cr:30%; Mo:8%; W:2%; Ni:4%; V:2.5%; Fe:0.3%; Si:1%; Y
2o
3: 0.3%; Hf:0.3%; Co: surplus.
Main improvement of the present invention is: added two kinds of materials of yttrium oxide and hafnium, the vital effect that existing self the characteristic in conjunction with above two kinds of materials plays is in the present invention briefly described:
Yttrium oxide chemical formula is Y
2o
3, rare earth, ceramic additive; In the process forming at ceramic phase, play the effect of crystal grain thinning, can effectively suppress grain growing thick and grain-boundary crack and the defect brought; Y simultaneously
2o
3have good high-temperature behavior, can adapt to laser processing time, the high temperature at approximately 2200 DEG C, hot spot place, can not decompose or volatilize; Without substitute.
Hafnium, chemical formula is Hf, transition metal is very similar to the character of zirconium, after oxidation, can form form compact and stable oxide film, has high corrosion-resistant, resistance to elevated temperatures; Compared with zirconium, high-temperature behavior and the resistance to cleavage of Hf are better, and while more adapting to laser processing, the high temperature at 2200 DEG C, hot spot place, can not volatilize.
What the present invention provided has laser melting coating Zinc-corrosion resistant coating Co-based alloy powder antiseptic power, stable performance by the preparation meticulously of the operations such as vacuum melting, vacuum aerosolization, screening, and granularity is-100+270 order.
What the present invention provided has laser melting coating corrosion protection coating Co-based alloy powder antiseptic power, stable performance, in actual cladding operation, adopt 1000～3000W continuous semiconductor laser apparatus, on the component of the materials such as carbon steel, structure iron, quenched and tempered steel and stainless steel, the melting and coating process parameter of applying described powdered material is: power: 1200～2800W, focal length: 220～350mm, spot size: 2 × 2mm～5 × 5mm, sweep velocity: 240～720mm/min, puts powder thickness: 0.5～1.5mm.
The present invention has laser melting coating Zinc-corrosion resistant ability, stable performance Zinc-corrosion resistant coating cobalt-based alloy powder powder material, is mainly used in the laser melting coating Zinc-corrosion resistant coating of the workpiece such as galvanizing line sinking roller, axle sleeve, conveying roller.
The invention has the beneficial effects as follows:
1, on existing cobalt wipla basis, alloy substrate strengthening element, the Y such as W, Mo, V, Si have been added
2o
3as grain-boundary strengthening element and dispersoid particle material, and adjust the degree of each element with Hf.By multiple strengthening means, reinforced alloys matrix, has improved again crystal boundary quality, makes alloy obtain good over-all properties.Thereby realize alloy in thering is moderate hardness and intensity, reduced again alloy melting point, increased Zinc-corrosion resistant, wear resisting property.Fundamentally solve and improved splitting resistance, formability, technology stability and the homogeneity of ingredients of Co-based alloy powder in laser cladding layer, having met the over-all properties requirement of processing component to cladding layer Zinc-corrosion resistant, wear-resisting, antifatigue and moderate hardness etc.
2, the formula scope of application of this powdered material provided by the invention is larger, and the component of the materials such as carbon steel, structure iron, quenched and tempered steel, stainless steel and tool steel, all can adopt this powder to carry out laser cladding coating, and application prospect is extremely wide.
Embodiment
Contriver is in order to verify the advantage of powder of the present invention with respect to existing powder, to having gone out following simultaneous test:
First be to provide existing powder according to two tests that formula carries out of different ratios;
Test 1: the mother metal of selecting is the galvanizing line sinking roller body of roll.Tube wall surface is processed with grinding machine, and surface roughness Ra=0.5 μ m cleans up with acetone before cladding.The chemical composition of the Co-based alloy powder adopting is Cr:27%; Mo:5.5%; C:0.25%; Ni:2.8%; Fe:1.5%; Si:1%; Co: surplus.
Adopt semiconductor laser, selected laser cladding technological parameter is: power: 1200～2800W, and focal length: 220～350mm, spot size: 2 × 2mm～5 × 5mm, sweep velocity: 240～720mm/min, puts powder thickness: 0.5～1.5mm.
Through laser melting coating, the Zinc-corrosion resistant layer thickness obtaining is in 1mm left and right, and Zinc-corrosion resistant layer surface irregularity, has the defects such as obvious crackle, pore.
Test 2: the mother metal of selecting is the galvanizing line conveying roller body of roll.Workpiece surface is processed with grinding machine, and surface roughness Ra=0.5 μ m cleans up with acetone before cladding.The chemical composition of the Co-based alloy powder adopting is Cr:28.5%; C:1.1%; W:4.4%; Ni:1.5%; Fe:1.5%; Si:1%; Co: surplus.
Adopt semiconductor laser, selected laser cladding technological parameter is: power: 1200～2800W, and focal length: 220～350mm, spot size: 2 × 2mm～5 × 5mm, sweep velocity: 240～720mm/min, puts powder thickness: 0.5～1.5mm.
Through laser melting coating, the Zinc-corrosion resistant layer thickness obtaining is in 1mm left and right, and Zinc-corrosion resistant layer surface irregularity, has the defects such as obvious crackle, pore.
Test is found: existing powder is in welding and surface treatment, under the considerably less process environments of the fast heat of this rapid cooling of the process environments of open local heating, especially laser processing, heat affecting, and the non-constant of adaptability, very easily cracking or produce other defect.
Following list is seven groups of embodiment that this case contriver makes for the power formulations of the present invention's proposition:
| ? | One | Two | Three | Four | Five | Six | Seven |
| Cr | 24 | 25 | 26 | 27 | 28 | 29 | 30 |
| Mo | 3 | 4 | 5 | 5.5 | 6 | 7 | 8 |
| W | 0.8 | 1 | 1.2 | 1.5 | 1.7 | 2 | 2 |
| Ni | 1.5 | 2 | 2.5 | 3 | 3.5 | 3.8 | 4 |
| V | 1 | 1.2 | 1.5 | 1.8 | 2 | 2.3 | 2.5 |
| Fe | 1 | 0.8 | 0.6 | 0.5 | 0.4 | 0.3 | 0.3 |
| Si | 0.5 | 0.5 | 0.6 | 0.7 | 0.8 | 0.9 | 1 |
| Y 2O 3 | 0.1 | 0.1 | 0.2 | 0.2 | 0.2 | 0.3 | 0.3 |
| Hf | 0.1 | 0.1 | 0.2 | 0.2 | 0.2 | 0.3 | 0.3 |
Above-mentioned each embodiment, the surplus in powder is Co.
Example 1:
The mother metal that present embodiment is selected is the galvanizing line sinking roller body of roll.Tube wall surface is processed with grinding machine, and surface roughness Ra=0.5 μ m cleans up with acetone before cladding.The chemical composition of the Co-based alloy powder adopting is: Cr:24%; Mo:3%; W:0.8%; Ni:1.5%; V:1%; Fe:1%; Si:0.5%; Y
2o
3: 0.1%; Hf:0.1%; Co: surplus.Adopt semiconductor laser, selected laser cladding technological parameter is: power: 1200～2800W, and focal length: 220～350mm, spot size: 2 × 2mm～5 × 5mm, sweep velocity: 240～720mm/min, puts powder thickness: 0.5～1.5mm.
Through laser melting coating, the Zinc-corrosion resistant layer thickness obtaining is in about 1mm, the surfacing of Zinc-corrosion resistant layer, and the defects such as flawless, pore, Zinc-corrosion resistant layer and mother metal are combined into metallurgical binding, and Zinc-corrosion resistant, wear resisting property are good.
Example 2:
The mother metal that present embodiment is selected is the galvanizing line sinking roller body of roll.Tube wall surface is processed with grinding machine, and surface roughness Ra=0.5 μ m cleans up with acetone before cladding.The chemical composition of the Co-based alloy powder adopting is: Cr:25%; Mo:4%; W:1%; Ni:2%; V:1.2%; Fe:0.8%; Si:0.5%; Y
2o
3: 0.1%; Hf:0.1%; Co: surplus.Adopt semiconductor laser, selected laser cladding technological parameter is: power: 1200～2800W, and focal length: 220～350mm, spot size: 2 × 2mm～5 × 5mm, sweep velocity: 240～720mm/min, puts powder thickness: 0.5～1.5mm.
Through laser melting coating, the Zinc-corrosion resistant layer thickness obtaining is in about 1mm, the surfacing of Zinc-corrosion resistant layer, and the defects such as flawless, pore, Zinc-corrosion resistant layer and mother metal are combined into metallurgical binding, and Zinc-corrosion resistant, wear resisting property are good.
Example 3:
The mother metal that present embodiment is selected is the galvanizing line sinking roller body of roll.Tube wall surface is processed with grinding machine, and surface roughness Ra=0.5 μ m cleans up with acetone before cladding.The chemical composition of the Co-based alloy powder adopting is: Cr:26%; Mo:5%; W:1.2%; Ni:2.5%; V:1.5%; Fe:0.6%; Si:0.6%; Y
2o
3: 0.2%; Hf:0.2%; Co: surplus.Adopt semiconductor laser, selected laser cladding technological parameter is: power: 1200～2800W, and focal length: 220～350mm, spot size: 2 × 2mm～5 × 5mm, sweep velocity: 240～720mm/min, puts powder thickness: 0.5～1.5mm.
Through laser melting coating, the Zinc-corrosion resistant layer thickness obtaining is in about 1mm, the surfacing of Zinc-corrosion resistant layer, and the defects such as flawless, pore, Zinc-corrosion resistant layer and mother metal are combined into metallurgical binding, and Zinc-corrosion resistant, wear resisting property are good.
Example 4:
The mother metal that present embodiment is selected is the galvanizing line sinking roller body of roll.Tube wall surface is processed with grinding machine, and surface roughness Ra=0.5 μ m cleans up with acetone before cladding.The chemical composition of the Co-based alloy powder adopting is: Cr:27%; Mo:5.5%; W:1.5%; Ni:3%; V:1.8%; Fe:0.5%; Si:0.7%; Y
2o
3: 0.2%; Hf:0.2%; Co: surplus.Adopt semiconductor laser, selected laser cladding technological parameter is: power: 1200～2800W, and focal length: 220～350mm, spot size: 2 × 2mm～5 × 5mm, sweep velocity: 240～720mm/min, puts powder thickness: 0.5～1.5mm.
Through laser melting coating, the Zinc-corrosion resistant layer thickness obtaining is in about 1mm, the surfacing of Zinc-corrosion resistant layer, and the defects such as flawless, pore, Zinc-corrosion resistant layer and mother metal are combined into metallurgical binding, and Zinc-corrosion resistant, wear resisting property are good.
Example 5:
The mother metal that present embodiment is selected is the galvanizing line conveying roller body of roll.Workpiece surface is processed with grinding machine, and surface roughness Ra=0.5 μ m cleans up with acetone before cladding.The chemical composition of the Co-based alloy powder adopting is: Cr:28%; Mo:6%; W:1.7%; Ni:3.5%; V:2%; Fe:0.4%; Si:0.8%; Y
2o
3: 0.2%; Hf:0.2%; Co: surplus.Adopt semiconductor laser, selected laser cladding technological parameter is: power: 1200～2800W, and focal length: 220～350mm, spot size: 2 × 2mm～5 × 5mm, sweep velocity: 240～720mm/min, puts powder thickness: 0.5～1.5mm.
Through laser melting coating, the Zinc-corrosion resistant layer thickness obtaining is in about 1mm, the surfacing of Zinc-corrosion resistant layer, and the defects such as flawless, pore, Zinc-corrosion resistant layer and mother metal are metallurgical binding, Zinc-corrosion resistant, wear resisting property are good.
Example 6:
The mother metal that present embodiment is selected is the galvanizing line conveying roller body of roll.Workpiece surface is processed with grinding machine, and surface roughness Ra=0.5 μ m cleans up with acetone before cladding.The chemical composition of the Co-based alloy powder adopting is: Cr:29%; Mo:7%; W:2%; Ni:3.8%; V:2.3%; Fe:0.3%; Si:0.9%; Y
2o
3: 0.3%; Hf:0.3%; Co: surplus.Adopt semiconductor laser, selected laser cladding technological parameter is: power: 1200～2800W, and focal length: 220～350mm, spot size: 2 × 2mm～5 × 5mm, sweep velocity: 240～720mm/min, puts powder thickness: 0.5～1.5mm.
Through laser melting coating, the Zinc-corrosion resistant layer thickness obtaining is in about 1mm, the surfacing of Zinc-corrosion resistant layer, and the defects such as flawless, pore, Zinc-corrosion resistant layer and mother metal are metallurgical binding, Zinc-corrosion resistant, wear resisting property are good.
Example 7:
The mother metal that present embodiment is selected is the galvanizing line conveying roller body of roll.Workpiece surface is processed with grinding machine, and surface roughness Ra=0.5 μ m cleans up with acetone before cladding.The chemical composition of the Co-based alloy powder adopting is: Cr:30%; Mo:8%; W:2%; Ni:4%; V:2.5%; Fe:0.3%; Si:1%; Y
2o
3: 0.3%; Hf:0.3%; Co: surplus.Adopt semiconductor laser, selected laser cladding technological parameter is: power: 1200～2800W, and focal length: 220～350mm, spot size: 2 × 2mm～5 × 5mm, sweep velocity: 240～720mm/min, puts powder thickness: 0.5～1.5mm.
Through laser melting coating, the Zinc-corrosion resistant layer thickness obtaining is in about 1mm, the surfacing of Zinc-corrosion resistant layer, and the defects such as flawless, pore, Zinc-corrosion resistant layer and mother metal are metallurgical binding, Zinc-corrosion resistant, wear resisting property are good.
The test-results of the powder proposing in conjunction with above-mentioned test-results to existing powder and the present invention, can find out that powder of the present invention meets service requirements more than existing powder.
Claims (3)
1. a Zinc-corrosion resistant coating Co-based alloy powder for laser melting coating, includes Cr, Mo, Ni, W, Mo, Si, V, Fe, Co, it is characterized in that: also comprise Y
2o
3, Hf, wherein the mass percent of each component is:
Cr:24～30%; Mo:3～8%; W:0.8～2%; Ni:1.5～4%; V:1～2.5%; Fe:0.3～1%; Si:0.5～1%; Y
2o
3: 0.1～0.3%; Hf:0.1～0.3%; Co: surplus.
2. Zinc-corrosion resistant coating Co-based alloy powder for laser melting coating according to claim 1, is characterized in that: the mass percent of each component is:
Cr:24%; Mo:3%; W:0.8%; Ni:1.5%; V:1%; Fe:1%; Si:0.5%; Y
2o
3: 0.1%; Hf:0.1%; Co: surplus.
3. anticorrosive coating nickel-based alloy powder for laser cladding according to claim 1, is characterized in that: the mass percent of each component is:
Cr:30%; Mo:8%; W:2%; Ni:4%; V:2.5%; Fe:0.3%; Si:1%; Y
2o
3: 0.3%; Hf:0.3%; Co: surplus.
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Cited By (8)
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|---|---|---|---|---|
| CN105349995A (en) * | 2015-12-14 | 2016-02-24 | 西安文理学院 | Laser-cladding cobalt-base alloy powder and repairing method for repairing damaged expander blade |
| CN106757003A (en) * | 2016-12-26 | 2017-05-31 | 重庆派馨特机电有限公司 | A kind of stirring-head surface treatment alloyed powder |
| CN107740093A (en) * | 2017-09-18 | 2018-02-27 | 苏州大学 | Laser melting coating high-entropy alloy powder of high temperature seal coating and preparation method thereof |
| CN107740094A (en) * | 2017-09-18 | 2018-02-27 | 苏州大学 | A kind of high temperature seal coating on machine lock and preparation method thereof |
| CN107849700A (en) * | 2015-12-01 | 2018-03-27 | 株式会社Ihi | Possess the slide unit of abrasion performance envelope and the forming method of abrasion performance envelope |
| CN109321785A (en) * | 2018-12-12 | 2019-02-12 | 常州大学 | A method of cobalt-based coating is prepared on cobalt-base alloys surface |
| CN113699415A (en) * | 2021-07-29 | 2021-11-26 | 南昌大学 | Novel Co-based high-temperature alloy coating resistant to corrosion and high-temperature oxidation and preparation method thereof |
| CN115449789A (en) * | 2022-09-30 | 2022-12-09 | 沈阳大陆激光工程技术有限公司 | High-wear-resistance cobalt-based alloy material applied to hot continuous rolling line side guide plate and manufactured by laser |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107849700A (en) * | 2015-12-01 | 2018-03-27 | 株式会社Ihi | Possess the slide unit of abrasion performance envelope and the forming method of abrasion performance envelope |
| CN105349995A (en) * | 2015-12-14 | 2016-02-24 | 西安文理学院 | Laser-cladding cobalt-base alloy powder and repairing method for repairing damaged expander blade |
| CN105349995B (en) * | 2015-12-14 | 2017-05-10 | 西安文理学院 | Laser-cladding cobalt-base alloy powder and repairing method for repairing damaged expander blade |
| CN106757003A (en) * | 2016-12-26 | 2017-05-31 | 重庆派馨特机电有限公司 | A kind of stirring-head surface treatment alloyed powder |
| CN107740093A (en) * | 2017-09-18 | 2018-02-27 | 苏州大学 | Laser melting coating high-entropy alloy powder of high temperature seal coating and preparation method thereof |
| CN107740094A (en) * | 2017-09-18 | 2018-02-27 | 苏州大学 | A kind of high temperature seal coating on machine lock and preparation method thereof |
| CN107740093B (en) * | 2017-09-18 | 2019-09-24 | 苏州大学 | The high-entropy alloy powder and preparation method thereof of laser melting coating high temperature seal coating |
| CN107740094B (en) * | 2017-09-18 | 2019-12-06 | 苏州大学 | High-temperature sealing coating for machine brake and preparation method thereof |
| CN109321785A (en) * | 2018-12-12 | 2019-02-12 | 常州大学 | A method of cobalt-based coating is prepared on cobalt-base alloys surface |
| CN113699415A (en) * | 2021-07-29 | 2021-11-26 | 南昌大学 | Novel Co-based high-temperature alloy coating resistant to corrosion and high-temperature oxidation and preparation method thereof |
| CN113699415B (en) * | 2021-07-29 | 2022-09-16 | 南昌大学 | Corrosion-resistant and high-temperature oxidation-resistant Co-based high-temperature alloy coating and preparation method thereof |
| CN115449789A (en) * | 2022-09-30 | 2022-12-09 | 沈阳大陆激光工程技术有限公司 | High-wear-resistance cobalt-based alloy material applied to hot continuous rolling line side guide plate and manufactured by laser |
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