CN103305831A - Special cobalt-based cermet alloy powder for laser cladding of surface of bushing - Google Patents
Special cobalt-based cermet alloy powder for laser cladding of surface of bushing Download PDFInfo
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- CN103305831A CN103305831A CN2013102417062A CN201310241706A CN103305831A CN 103305831 A CN103305831 A CN 103305831A CN 2013102417062 A CN2013102417062 A CN 2013102417062A CN 201310241706 A CN201310241706 A CN 201310241706A CN 103305831 A CN103305831 A CN 103305831A
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- cobalt
- based cermet
- bushing
- axle sleeve
- alloy powder
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Abstract
The invention discloses special cobalt-based cermet alloy powder for the laser cladding of the surface of a bushing. The cobalt-based cermet alloy powder contains the following ingredients in percentage by weight: 11-13% of wolfram carbide, 0.2-0.3% of carbon, 5-8% of calcium fluoride, 3-5% of silicon nitride, 3-5% of boron, 3-5% of silicon, 5-8% of ferrum, 17-20% of molybdenum, 0.7-1% of manganese and the balance of cobalt. The cobalt-based cermet alloy powder is special for the laser cladding of the bushing and is used for improving the compactness of the metal structure of the surface of the bushing, so that the hardness, strength and wear resistance of the bushing are improved.
Description
Technical field
The present invention relates to a kind of powdered alloy, refer to especially a kind of cobalt-based cermet powder that is exclusively used in the axle sleeve surface laser cladding.
Background technology
Laser has high brightness, high directivity, high monochromaticity, high coherency's characteristics, is just used by increasing field now, and laser melting coating is exactly a kind of in the process for treating surface.That summarizes says, the principle of laser melting coating is utilized high energy laser beam irradiation metal material surface exactly, substrate surface is melted rapidly, liquid metal forms a small-scale molten bath, fill in simultaneously new powdered material, in this molten bath, metallic substance originally mixes mutually with the powder that is added, and forms the new liquid-metal layer of one deck.Treat after the laser beam process, liquid-metal layer rapidly cooling forms the solid-state cladding layer of one deck thus in the metallic surface.The Main Function of axle sleeve is to reduce the wearing and tearing of axle and the number of times of changing axle.In During Process of Long-term Operation, the effect of power and composite machine power because axle sleeve is squeezed will cause wearing and tearing or the tension set of axle, and the cost of repairing or change axle is too high.Therefore make the axle sleeve at present other axle sleeve general all ubiquity difference of hardness, intensity shortcoming low, easy to wear except the expensive material of employing.
Summary of the invention
Technical problem to be solved by this invention is: a kind of cobalt-based cermet powder that is exclusively used in the axle sleeve surface laser cladding is provided, this cobalt-based cermet powder is exclusively used in the laser melting coating of axle sleeve, improve axle sleeve surface metal dense structure property, thereby improve hardness, intensity and the wear resistance of axle sleeve.
For solving the problems of the technologies described above, technical scheme of the present invention is: be exclusively used in the cobalt-based cermet powder of axle sleeve surface laser cladding, by weight percentage, comprise the 11-13% wolfram varbide, 0.2-0.3% carbon, 5-8% Calcium Fluoride (Fluorspan), 3-5% silicon nitride, 3-5% boron, 3-5% silicon, 5-8% iron, 17-20% molybdenum, 0.7-1% manganese, surplus are cobalt.
Wherein, the screening formulation that is exclusively used in the cobalt-based cermet powder of axle sleeve surface laser cladding comprises 12% wolfram varbide, 0.2% carbon, and 5% Calcium Fluoride (Fluorspan), 3% silicon nitride, 5% boron, 3% silicon, 8% iron, 17% molybdenum, 0.7% manganese, surplus is cobalt.
The effect of each composition is as follows in the cobalt-based cermet powder among the present invention:
Wolfram varbide (WC): in laser cladding process, do not melt, cobalt-based cermet powder evenly sprays from the powder injection hole of laser head to the axle sleeve laser melting coating time, WC is evenly distributed in the molten bath, is present in the cladding layer as strengthening particulate, has greatly strengthened the hardness of cladding layer.
Carbon (C): belong to non-metallic element, carbon content is higher, hardness is just higher, wear resisting property is just better, yield-point and tensile strength raise, but its toughness, plasticity, impact and corrosion resistance can reduce along with the increase of carbon content, so when the selection of C content guarantees that axle sleeve satisfies wear resistance in this cermet powder, take into account as much as possible toughness and erosion resistance.
Calcium Fluoride (Fluorspan) (CaF
2): as adding material, the internal stress when solidifying for the minimizing cladding layer defectives such as thermal crack, shrinkage cavity and porosity occur after preventing from solidifying, and improves the compactness of metal inside tissue.
Silicon nitride (SiN
4): exist as the second ceramic particle except tungsten carbide wc, in cladding process, do not melt, but large to the thermal absorptivity of laser, can accelerate heat dispersing, and as the mitigation of soft metallic element and ultrahigh hardness ceramic particle, strengthen creep resistance, oxidation-resistance improves erosion resistance.
Boron (B): have the grain-boundary strengthening effect, can improve the hardness of cladding layer, intensity can improve the hardening capacity of steel, the normalizing attitude tissue that impels steel by perlite to bainite transformation.
Silicon (Si): in Self-fusing powder, rise from slag making and provide protection, can preferentially form silicate with the oxygen element that enters the molten bath, be covered in weld pool surface, prevent liquid metal transition oxidation, improve the wetting ability of liquid metal.Ferrite there is larger admittedly molten strengthening effect, silicon energy refine pearlite tissue, still, too high Si is unfavorable to the weldability of steel.
Iron (Fe): identical with the material of axle sleeve matrix, increase the affinity of liquid metal and matrix, improve the intensity of cladding layer metallurgical binding, make this cermet powder with the surperficial full and uniform fusion of axle sleeve.
Molybdenum (Mo): as a kind of rare earth element additive, promote grain refining, improve the homogeneity of structure of cladding layer, thereby improve the polishing machine of cladding layer.
Manganese (Mn): the hardening capacity that strongly improves steel, all can play larger solution strengthening effect to ferrite and austenite, so that steel possess high intensity and hardness, the too high meeting of Mn is so that steel have obvious temper brittleness, Mn impels austenite to grow up, and makes steel to overheated responsive.
Cobalt (Co): as cermet substrate, thorough melting during cladding together forms laser molten pool with the base material of molten state, for other elements or compound in the molten bath evenly the distribution after coagulation become cladding layer, to increase cladding layer hardness.
After having adopted technique scheme, conclusion of the present invention is: this cobalt-based cermet powder is specifically designed to the laser melting coating on axle sleeve surface, can fully merge with the axle sleeve base material, and each homogeneous chemical composition is distributed in the cladding layer.For the abominable situation of axle sleeve Working environment, adopt the ultrahigh hardness ceramic particle to improve the hardness on axle sleeve surface, select again in addition some trace elements to improve wear resistance and the intensity of axle sleeve, prolonged the work-ing life of axle sleeve.
Embodiment
The present invention is described in further detail below by specific embodiment.
Embodiment 1
With the 110g wolfram varbide, 3g carbon, 80g Calcium Fluoride (Fluorspan), the 50g silicon nitride, 30g boron, 50g silicon, 50g iron, the 200g molybdenum, 10g manganese, the 417g cobalt fully mixes, and obtains 100-200 purpose cobalt-based cermet powder.
Embodiment 2
With the 130g wolfram varbide, 3g carbon, 50g Calcium Fluoride (Fluorspan), the 40g silicon nitride, 40g boron, 40g silicon, 60g iron, the 180g molybdenum, 8g manganese, the 449g cobalt fully mixes, and obtains 100-200 purpose cobalt-based cermet powder.
Embodiment 3
With the 120g wolfram varbide, 2g carbon, 50g Calcium Fluoride (Fluorspan), the 30g silicon nitride, 50g boron, 30g silicon, 80g iron, the 170g molybdenum, 7g manganese, the 461g cobalt fully mixes, and obtains 100-200 purpose cobalt-based cermet powder.
The metal alloy powders that mixes among this embodiment 3 powder injection hole by laser head is evenly sprayed, powder feeding direction and the laser beams coaxial of cermet powder, the optical maser wavelength of laser are 1.06 μ m, and output rating is 4000W, travelling speed is 2m/min, and the single track width is 2mm.The axle sleeve that obtains through laser melting coating carries out mechanical detection and obtains following data: (distance in the following table be lowest surface take cladding layer as base plane, base plane is above for just, base plane is following for bearing)
Any technician is equal to the technical scheme of replacing or changing according to technical scheme of the present invention and inventive concept and should be fallen within protection scope of the present invention within the technical scope that the present invention discloses.
Claims (2)
1. be exclusively used in the cobalt-based cermet powder of axle sleeve surface laser cladding, by weight percentage, comprise the 11-13% wolfram varbide, 0.2-0.3% carbon, 5-8% Calcium Fluoride (Fluorspan), 3-5% silicon nitride, 3-5% boron, 3-5% silicon, 5-8% iron, the 17-20% molybdenum, 0.7-1% manganese, surplus is cobalt.
2. the cobalt-based cermet powder that is exclusively used in the axle sleeve surface laser cladding as claimed in claim 1 is characterized in that: comprise 12% wolfram varbide, and 0.2% carbon, 5% Calcium Fluoride (Fluorspan), 3% silicon nitride, 5% boron, 3% silicon, 8% iron, 17% molybdenum, 0.7% manganese, surplus is cobalt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102417062A CN103305831A (en) | 2013-06-18 | 2013-06-18 | Special cobalt-based cermet alloy powder for laser cladding of surface of bushing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102417062A CN103305831A (en) | 2013-06-18 | 2013-06-18 | Special cobalt-based cermet alloy powder for laser cladding of surface of bushing |
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| CN103305831A true CN103305831A (en) | 2013-09-18 |
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| CN2013102417062A Pending CN103305831A (en) | 2013-06-18 | 2013-06-18 | Special cobalt-based cermet alloy powder for laser cladding of surface of bushing |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103600067A (en) * | 2013-11-20 | 2014-02-26 | 樊宇 | Cobalt-base metal alloy powder special for continuous fiber laser cladding |
| CN103600066A (en) * | 2013-11-20 | 2014-02-26 | 毛桂林 | Cobalt-base alloy powder special for continuous-wave fiber laser cladding |
| CN105210552A (en) * | 2015-11-12 | 2016-01-06 | 张磊 | A kind of corn combine |
| CN105220018A (en) * | 2015-11-12 | 2016-01-06 | 张磊 | The automatic picking machine cutting blade of a kind of fruit |
| CN109207991A (en) * | 2018-08-13 | 2019-01-15 | 浙江翰德圣智能再制造技术有限公司 | A kind of renovation technique of axle sleeve |
| CN111441051A (en) * | 2020-05-11 | 2020-07-24 | 北京工业大学 | Laser-plasma composite energy field deposition method for cobalt-based gradient high-temperature wear-resistant antifriction coating |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH0336231A (en) * | 1989-07-03 | 1991-02-15 | Fujitsu Ltd | Lightweight wear-resistant member and its manufacture |
| CN101100746A (en) * | 2007-08-03 | 2008-01-09 | 中国人民解放军装甲兵工程学院 | Carburization-like overloading tooth component tooth surface laser cladding powder material and repairing method thereof |
| CN102650012A (en) * | 2012-05-05 | 2012-08-29 | 张家港市和昊激光科技有限公司 | Special cobalt-based metal ceramic alloy powder for optical fiber laser cladding |
-
2013
- 2013-06-18 CN CN2013102417062A patent/CN103305831A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0336231A (en) * | 1989-07-03 | 1991-02-15 | Fujitsu Ltd | Lightweight wear-resistant member and its manufacture |
| CN101100746A (en) * | 2007-08-03 | 2008-01-09 | 中国人民解放军装甲兵工程学院 | Carburization-like overloading tooth component tooth surface laser cladding powder material and repairing method thereof |
| CN102650012A (en) * | 2012-05-05 | 2012-08-29 | 张家港市和昊激光科技有限公司 | Special cobalt-based metal ceramic alloy powder for optical fiber laser cladding |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103600067A (en) * | 2013-11-20 | 2014-02-26 | 樊宇 | Cobalt-base metal alloy powder special for continuous fiber laser cladding |
| CN103600066A (en) * | 2013-11-20 | 2014-02-26 | 毛桂林 | Cobalt-base alloy powder special for continuous-wave fiber laser cladding |
| CN105210552A (en) * | 2015-11-12 | 2016-01-06 | 张磊 | A kind of corn combine |
| CN105220018A (en) * | 2015-11-12 | 2016-01-06 | 张磊 | The automatic picking machine cutting blade of a kind of fruit |
| CN109207991A (en) * | 2018-08-13 | 2019-01-15 | 浙江翰德圣智能再制造技术有限公司 | A kind of renovation technique of axle sleeve |
| CN109207991B (en) * | 2018-08-13 | 2020-10-02 | 浙江翰德圣智能再制造技术有限公司 | Shaft sleeve repairing process |
| CN111441051A (en) * | 2020-05-11 | 2020-07-24 | 北京工业大学 | Laser-plasma composite energy field deposition method for cobalt-based gradient high-temperature wear-resistant antifriction coating |
| CN111441051B (en) * | 2020-05-11 | 2021-12-24 | 北京工业大学 | Laser-plasma composite energy field deposition method for cobalt-based gradient high-temperature wear-resistant antifriction coating |
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Application publication date: 20130918 |