CN103302286A - Cobalt-based metal ceramic alloy powder exclusively used in laser cladding of turning tool - Google Patents
Cobalt-based metal ceramic alloy powder exclusively used in laser cladding of turning tool Download PDFInfo
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- CN103302286A CN103302286A CN2013102417772A CN201310241777A CN103302286A CN 103302286 A CN103302286 A CN 103302286A CN 2013102417772 A CN2013102417772 A CN 2013102417772A CN 201310241777 A CN201310241777 A CN 201310241777A CN 103302286 A CN103302286 A CN 103302286A
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Abstract
The invention discloses cobalt-based metal ceramic alloy powder exclusively used in laser cladding of a turning tool. The cobalt-based metal ceramic alloy powder is composed of the following ingredients in percentage by weight: 11-14% of silicon carbide, 0.1-0.3% of carbon, 5-7% of calcium fluoride, 18-28% of chromium, 2-4% of boron, 0.2-0.4% of vanadium, 5-8% of iron, 4-6% of silicon, 13-16% of molybdenum, and the balance of cobalt. The cobalt-based metal ceramic alloy powder is exclusively used in laser cladding of the turning tool, improves the metal structure density of the turning tool, reduces the defects such as gas pores, cracks and shrinkage cavities of the cladding layer, and improves the wearing resistance, rigidity, heat resistance and strength of the turning tool, and meanwhile, the cost is reduced.
Description
Technical field
The present invention relates to a kind of alloy powder, refer to especially a kind of cobalt-based cermet powder that is exclusively used in the lathe tool laser melting coating.
Background technology
Laser has high brightness, high directivity, high monochromaticity, high coherence'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 dusty material, in this molten bath, metal material 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 metal surface.Lathe tool is for turning processing, have the cutter of a cutting tip.Contact the turning meeting during work between lathe tool and the workpiece and produce a large amount of heats.Therefore, lathe tool is had relatively high expectations to self material, and is specific as follows: 1) the high rigidity wearability of becoming reconciled: 2) good heat resistance: 3) high strength.Yet the lathe tool integral material all is to adopt the material that satisfies above-mentioned mechanical performance to make at present, cost is very high, if the metal alloy powders that is specifically designed to the lathe tool laser melting coating can be provided, can utilize so laser melting coating when the lathe tool mechanical performance is provided, also can reduce the cost of lathe tool.
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 lathe tool laser melting coating is provided, this cobalt-based cermet powder is exclusively used in the laser melting coating of lathe tool, improve lathe tool metal structure compactness, reduce pore, crackle and the shrinkage cavity defect of cladding layer, in the wearability that improves lathe tool, hardness in the time of heat resistance, intensity, has reduced cost.
For solving the problems of the technologies described above, technical scheme of the present invention is: a kind of cobalt-based cermet powder that is exclusively used in the lathe tool laser melting coating, by weight percentage, comprise 11-14% carborundum, 0.1-0.3% carbon, 5-7% calcirm-fluoride, 18-23% chromium, 2-4% boron, the 0.2-0.4% vanadium, 5-8% iron, 4-6% silicon, 13-16% molybdenum, surplus are cobalt.
Wherein, the cobalt-based cermet powder optimum ratio that is exclusively used in the lathe tool laser melting coating comprises 13% carborundum, 0.2% carbon, and 6% calcirm-fluoride, 21% chromium, 3% boron, 0.3% vanadium, 7% iron, 5% silicon, 15% molybdenum, surplus is cobalt.
The effect of each composition is as follows in the cobalt-based cermet powder among the present invention:
Cobalt (Co): as cermet substrate, thorough melting during cladding together forms laser molten pool with the lathe tool surface substrate of molten condition, for other elements or compound in the molten bath evenly the distribution after coagulation become cladding layer, to increase cladding layer hardness.
Carborundum (SiC) particle: in laser cladding process, do not melt, cobalt-based cermet powder evenly sprays from printhead to the lathe tool laser melting coating time, carborundum is evenly distributed in the molten bath, be present in the cladding layer as strengthening particulate, greatly strengthen hardness and the intensity of cladding layer, can reduce the sensitiveness of cladding layer cracking.
Carbon (C): belong to nonmetalloid, carbon content is higher, hardness is just higher, anti-wear performance 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 lathe tool satisfies wearability in this cermet powder, take into account as much as possible toughness and corrosion resistance, this C content can increase cold brittleness and the aging sensitivity of steel in addition.
Calcirm-fluoride (CaF2): as adding material, the internal stress when solidifying for the minimizing cladding layer defectives such as fire check, shrinkage cavity and porosity occur after preventing from solidifying, and improves the compactness of metal inside tissue.
Chromium (Cr): have stronger solution strengthening ability, improve the intensity of cladding layer, can strongly improve the quenching degree of steel, and has good corrosion resistance, can increase the quenching degree of steel and the deformability after the quenching, can increase again simultaneously hardness, elasticity, coercive force and the anti-brute force of steel, increase corrosion resistance and the heat resistance of steel.
Boron (B): have the intercrystalline strengthening effect, can improve the hardness of cladding layer, intensity can improve the quenching degree of steel, the normalizing attitude tissue that impels steel by pearlite to bainite transformation.
Vanadium (V): have the refined crystalline strengthening effect, can improve the quenching degree of resistance to tempering and material, also can form carbide with carbon.
Silicon (Si): in Self-fusing powder, rise from slag making and protective effect, 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 wettability of liquid metal.Ferrite there is larger admittedly molten invigoration effect, silicon energy refine pearlite tissue, but too high silicon is unfavorable to the weldability of steel.
Iron (Fe): identical with the material of lathe tool matrix, increase the compatibility 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 lathe tool.
Molybdenum (Mo): as a kind of rare earth element additive, promote grain refinement, improve the structural homogenity of cladding layer, thereby improve the polishing machine of cladding layer.
After having adopted technique scheme, effect of the present invention is: this cobalt-based cermet powder is specifically designed to the laser melting coating on lathe tool surface, can fully merge with the lathe tool base material, each homogeneous chemical composition is distributed in the cladding layer, adopt the ultrahigh hardness ceramic particle to improve the hardness of lathe tool, select again in addition some trace elements to improve lathe tool wearability, intensity and heat resistance, like this, utilize this cermet powder that lathe tool is carried out having reduced when laser melting coating can improve lathe tool surface mechanical performance cost.
The specific embodiment
The present invention is described in further detail below by specific embodiment.
Embodiment 1
With 110g carborundum, 1g carbon, 50g calcirm-fluoride, 180g chromium, 20g boron, 2g vanadium, 50g iron, 40g silicon, 130g molybdenum, 417g cobalt mix fully, obtain 100-200 purpose cobalt-based cermet powder.
Embodiment 2
With 140g carborundum, 3g carbon, 70g calcirm-fluoride, 230g chromium, 40g boron, 4g vanadium, 80g iron, 60g silicon, 160g molybdenum, 213g cobalt mix fully, obtain 100-200 purpose cobalt-based cermet powder.
Embodiment 3
With 130g carborundum, 2g carbon, 60g calcirm-fluoride, 210g chromium, 30g boron, 3g vanadium, 70g iron, 50g silicon, 150g molybdenum, 295g cobalt mix fully, obtain 100-200 purpose cobalt-based cermet powder.
With the metal alloy powders that mixes among this embodiment 3 by the powder injection hole of laser head evenly spray, powder feeding direction and the laser beams coaxial of cermet powder, the optical maser wavelength of laser are 1.06um, and power output is 4000W, the speed of service is 2m/min, and the single track width is 2mm.The lathe tool 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 technical staff 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 lathe tool laser melting coating, by weight percentage, comprise 11-14% carborundum, 0.1-0.3% carbon, 5-7% calcirm-fluoride, 18-23% chromium, 2-4% boron, the 0.2-0.4% vanadium, 5-8% iron, 4-6% silicon, the 13-16% molybdenum, surplus is cobalt.
2. the cobalt-based cermet powder that is exclusively used in the lathe tool laser melting coating as claimed in claim 1 is characterized in that: comprise 13% carborundum, and 0.2% carbon, 6% calcirm-fluoride, 21% chromium, 3% boron, 0.3% vanadium, 7% iron, 5% silicon, 15% molybdenum, surplus is cobalt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2013102417772A CN103302286A (en) | 2013-06-18 | 2013-06-18 | Cobalt-based metal ceramic alloy powder exclusively used in laser cladding of turning tool |
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| CN2013102417772A CN103302286A (en) | 2013-06-18 | 2013-06-18 | Cobalt-based metal ceramic alloy powder exclusively used in laser cladding of turning tool |
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| CN103302286A true CN103302286A (en) | 2013-09-18 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103525507A (en) * | 2013-10-11 | 2014-01-22 | 程志林 | Metal surface alloying agent and preparation method thereof |
| CN103600067A (en) * | 2013-11-20 | 2014-02-26 | 樊宇 | Cobalt-base metal alloy powder special for continuous fiber laser cladding |
| CN103614721A (en) * | 2013-11-20 | 2014-03-05 | 刘晓东 | Special powdered alloy for cladding process of continuous wave optical fiber laser |
| CN103624250A (en) * | 2013-11-20 | 2014-03-12 | 柳岸敏 | Nickel metal ceramal powder dedicated for continuous fiber laser cladding |
| CN103639403A (en) * | 2013-11-20 | 2014-03-19 | 徐立云 | Special cobalt-based alloy powder for continuous wave fiber laser cladding |
| CN110747384A (en) * | 2019-11-21 | 2020-02-04 | 江苏威拉里新材料科技有限公司 | Cobalt-based metal powder |
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| US20040142196A1 (en) * | 2003-01-17 | 2004-07-22 | Karel Hajmrle | Thermal spray composition and method of deposition for abradable seals |
| CN102168210A (en) * | 2011-04-07 | 2011-08-31 | 杭州博华激光技术有限公司 | Laser cladding technological method and alloy material for laser cladding |
| CN102634747A (en) * | 2012-04-26 | 2012-08-15 | 华北电力大学 | Powdered material used for preparing high-temperature abrasion-proof anticorrosion cladding layer and preparation method |
| 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 |
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US4532191A (en) * | 1982-09-22 | 1985-07-30 | Exxon Research And Engineering Co. | MCrAlY cladding layers and method for making same |
| JPS60200975A (en) * | 1984-03-23 | 1985-10-11 | Hitachi Cable Ltd | Treatment of inside of tubular metallic material |
| US20040142196A1 (en) * | 2003-01-17 | 2004-07-22 | Karel Hajmrle | Thermal spray composition and method of deposition for abradable seals |
| CN102168210A (en) * | 2011-04-07 | 2011-08-31 | 杭州博华激光技术有限公司 | Laser cladding technological method and alloy material for laser cladding |
| CN102634747A (en) * | 2012-04-26 | 2012-08-15 | 华北电力大学 | Powdered material used for preparing high-temperature abrasion-proof anticorrosion cladding layer and preparation method |
| 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 |
|---|---|---|---|---|
| CN103525507A (en) * | 2013-10-11 | 2014-01-22 | 程志林 | Metal surface alloying agent and preparation method thereof |
| CN103525507B (en) * | 2013-10-11 | 2015-04-29 | 程志林 | Metal surface alloying agent and preparation method thereof |
| CN103600067A (en) * | 2013-11-20 | 2014-02-26 | 樊宇 | Cobalt-base metal alloy powder special for continuous fiber laser cladding |
| CN103614721A (en) * | 2013-11-20 | 2014-03-05 | 刘晓东 | Special powdered alloy for cladding process of continuous wave optical fiber laser |
| CN103624250A (en) * | 2013-11-20 | 2014-03-12 | 柳岸敏 | Nickel metal ceramal powder dedicated for continuous fiber laser cladding |
| CN103639403A (en) * | 2013-11-20 | 2014-03-19 | 徐立云 | Special cobalt-based alloy powder for continuous wave fiber laser cladding |
| CN103639403B (en) * | 2013-11-20 | 2015-09-30 | 徐立云 | Be exclusively used in the Co-based alloy powder of continuous wave optical-fiber laser cladding |
| CN110747384A (en) * | 2019-11-21 | 2020-02-04 | 江苏威拉里新材料科技有限公司 | Cobalt-based metal powder |
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Application publication date: 20130918 |