CN103602858B - Be exclusively used in the cobalt-based cermet powder of continous way optical-fiber laser cladding - Google Patents
Be exclusively used in the cobalt-based cermet powder of continous way optical-fiber laser cladding Download PDFInfo
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- CN103602858B CN103602858B CN201310589365.8A CN201310589365A CN103602858B CN 103602858 B CN103602858 B CN 103602858B CN 201310589365 A CN201310589365 A CN 201310589365A CN 103602858 B CN103602858 B CN 103602858B
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Abstract
The invention discloses a kind of cobalt-based cermet powder being exclusively used in the cladding of continous way optical-fiber laser, by weight percentage, comprise 15-18% aluminium sesquioxide, 13-19% silicon carbide, 11-13% titanium dioxide, 4-8% Calcium Fluoride (Fluorspan), 2-5% cerium oxide, surplus is cobalt-based.This cobalt-based cermet powder is in the process of continous way optical-fiber laser cladding, greatly can not only improve the specific absorption of metalwork to laser, and it is fine and close to form one deck internal organizational structure on its surface, the defect cladding layers such as flawless, shrinkage cavity, bubble, in the work-ing life of the metalwork greatly increased, reduce production cost.
Description
Technical field
The invention discloses cermet powder, particularly a kind of cobalt-based cermet powder being exclusively used in the cladding of continous way optical-fiber laser.
Background technology
Laser has the feature of high brightness, high directivity, high monochromaticity, high coherency, now just use by increasing field, wherein laser melting coating is exactly the one in process for treating surface.Generally, the principle of laser melting coating utilizes high energy laser beam to expose to metal material surface exactly, substrate surface is melted rapidly, liquid metal forms a small-scale molten bath, fill in new powdered material simultaneously, in this molten bath, metallic substance originally mixes mutually with the powder be added, and forms the liquid-metal layer that one deck is new.After treating laser beam scanning, liquid-metal layer cools rapidly and forms the solid-state cladding layer of one deck in metallic surface thus.
But domestic market does not almost have the metal-powder that the cladding of continous way optical-fiber laser is special, usual used powdered alloy is mostly thermospray self-fluxing alloy powder used.Due to the difference such as heat transfer type, processing condition of two kinds of technology, after thermospray self-fluxing alloy powder used is directly used in the cladding of continous way optical-fiber laser, laser absorption rate is lower, generally at about 30-40%.Easily there is the defects such as crackle, shrinkage porosite, shrinkage cavity, pore in cladding layer, and the hardness, intensity etc. of cladding layer often can not reach explained hereafter requirement.Such as, in most self-fluxing alloy powder, the content of boron and silicon is higher, some making in laser cladding process are mingled with as borosilicate cannot smoothly from emersion in the molten bath of rapid solidification, cause laser cladding layer cracking sensitivity large, during laser cladding layer hardness height, cracking phenomena is particularly evident.Therefore, a kind of cermet powder being specifically designed to the cladding of continous way optical-fiber laser is developed very urgent.
Summary of the invention
Technical problem to be solved by this invention is: the invention provides a kind of cobalt-based cermet powder being exclusively used in the cladding of continous way optical-fiber laser, this cobalt-based cermet powder is in the process of continous way optical-fiber laser cladding, greatly can not only improve the specific absorption of metalwork to laser, and it is fine and close to form one deck internal organizational structure on its surface, the defect cladding layers such as flawless, shrinkage cavity, bubble, in the work-ing life of the metalwork greatly increased, reduce production cost.
For solving the problems of the technologies described above, technical scheme of the present invention is: the cobalt-based cermet powder being exclusively used in the cladding of continous way optical-fiber laser, by weight percentage, comprise 15-18% aluminium sesquioxide, 13-19% silicon carbide, 11-13% titanium dioxide, 4-8% Calcium Fluoride (Fluorspan), 2-5% cerium oxide, surplus is cobalt-based.
Above-mentioned cobalt-based cermet powder comprises 17% aluminium sesquioxide, 16% silicon carbide, 12% titanium dioxide, 6% Calcium Fluoride (Fluorspan), 3% cerium oxide, and surplus is cobalt-based.
The cobalt-based cermet powder effect being exclusively used in the cladding of continous way optical-fiber laser of the present invention is as follows:
Cobalt (Co) element: as cermet substrate, thorough melting during cladding, together forms laser molten pool with the base material of molten state, is uniformly distributed after coagulation becomes cladding layer, to increase cladding layer hardness for other elements or compound in molten bath.
Aluminium sesquioxide (Al
2o
3): belong to metal ceramic powder, be present in cladding layer as strengthening particulate, cladding layer hardness and intensity can greatly be improved, the susceptibility of cladding layer cracking can be reduced, improve the specific absorption of laser.
Silicon carbide (SiC): also belong to metal ceramic powder, with aluminium sesquioxide (Al
2o
3) form complementation, the performances such as the hardness of cladding layer, intensity can be increased substantially.
Titanium dioxide (TiO
2): be conducive to improving cobalt-based metal alloy powder of the present invention to the specific absorption of laser, thus the power stage of laser apparatus can be reduced, improve the utilization ratio of the energy.
Calcium Fluoride (Fluorspan) (CaF
2): as adding material, for reducing internal stress when cladding layer solidifies, after preventing from solidifying, there is the defect such as thermal crack, shrinkage cavity and porosity, improving the compactness of metal inside tissue.
Cerium oxide (CeO
2): the specific absorption of metal alloy powders to laser can be improved, increase the utilization ratio of the energy.
The invention has the beneficial effects as follows:
1. cobalt-based cermet powder of the present invention, in the cladding of continous way optical-fiber laser, cobalt-based alloy powder foot couple laser has higher specific absorption, improves the utilization ratio of the energy, has saved production cost;
2. cobalt-based cermet powder of the present invention, employs two kinds of metal ceramic powder aluminium sesquioxides, silicon carbide, can increase substantially cladding layer hardness.
3. by estimation cermet powder of the present invention, the cladding layer dense internal organization of formation, the defects such as flawless, shrinkage porosite, pore, and there is the performances such as high rigidity, intensity, toughness and high corrosion resistance.
Specific embodiment
Below by specific embodiment, the present invention is described in further detail.
Embodiment 1
By 15% aluminium sesquioxide, 13% silicon carbide, 11% titanium dioxide, 4% Calcium Fluoride (Fluorspan), 2% cerium oxide, surplus is cobalt-based.It is fully mixed, obtains the 100-200 object cobalt-based cermet powder of 500g.
Embodiment 2
By 18% aluminium sesquioxide, 19% silicon carbide, 13% titanium dioxide, 8% Calcium Fluoride (Fluorspan), 5% cerium oxide, surplus is cobalt-based.It is fully mixed, obtains the 100-200 object nickel based metal ceramal powder of 500g.
Embodiment 3
By 17% aluminium sesquioxide, 16% silicon carbide, 12% titanium dioxide, 6% Calcium Fluoride (Fluorspan), 3% cerium oxide, surplus is cobalt-based.It is fully mixed, obtains the 100-200 object nickel based metal ceramal powder of 500g.
Embodiment 4
Get 500g, globule size is 100-200 object ordinary metallic alloys powder.
Use optical fiber laser, adopt the mode of coaxial powder-feeding, the metal alloy powders mixed in embodiment 1, embodiment 2 and embodiment 3 is carried out laser melting coating respectively on metalwork surface, evenly sprayed by the powder injection hole of laser melting coating head, adopt continous way optical-fiber laser, optical maser wavelength is 1.06um, and output rating is 3200W, travelling speed is 1.5m/min, and single track width is 1.8mm.Through laser melting coating, metalwork is carried out mechanical detection and obtain following data: (distance in following table is with the lowest surface of cladding layer for base plane, just more than base plane is, is negative below base plane).Base material hardness value is 42HRC, wearing and tearing weight 24mg.(test wear weight: the sample after base material and cladding is carried out wearing test, carries out 2 hours wearing tests at identical conditions)
Claims (1)
1. be exclusively used in the cobalt-based cermet powder of continous way optical-fiber laser cladding, by weight percentage, it is characterized in that: described cobalt-based cermet powder comprises 17% aluminium sesquioxide, 16% silicon carbide, 12% titanium dioxide, 6% Calcium Fluoride (Fluorspan), 3% cerium oxide, surplus is cobalt-based.
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| CN103602858B true CN103602858B (en) | 2015-11-18 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104399968B (en) * | 2014-11-10 | 2016-08-17 | 中国矿业大学 | A kind of cobalt-based metal alloy powder for continuous way optical-fiber laser surface alloying |
| CN111020299B (en) * | 2019-12-12 | 2021-04-13 | 西安航天新宇机电装备有限公司 | Co-Al-W-TiO2 alloy bar and preparation method thereof |
| CN110904361B (en) * | 2019-12-16 | 2020-10-30 | 北京君山表面技术工程有限公司 | Preparation method of nickel-based alloy composite powder and cladding coating for plasma spraying |
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| CN102990058A (en) * | 2012-12-18 | 2013-03-27 | 江苏新亚特钢锻造有限公司 | Oxide particle reinforced laser-clad high abrasion resistance cobalt-base alloy powder and preparation method thereof |
| CN102990059A (en) * | 2012-12-19 | 2013-03-27 | 江苏新亚特钢锻造有限公司 | Silicide particle reinforced laser-clad high abrasion resistance cobalt-base alloy powder and preparation method thereof |
| CN103042759A (en) * | 2012-09-27 | 2013-04-17 | 浙江工业大学 | Strengthened coating in sandwich-like structure on surface of precipitation hardening stainless steel |
| CN103331441A (en) * | 2013-06-18 | 2013-10-02 | 江苏和昊激光科技有限公司 | Cobalt-based metal ceramic alloy powder dedicated to laser cladding of stamping die |
| CN103334102A (en) * | 2013-06-18 | 2013-10-02 | 江苏和昊激光科技有限公司 | Special cobalt-base metal ceramic alloy powder for guillotine laser cladding |
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| RU2055940C1 (en) * | 1993-05-06 | 1996-03-10 | Институт физико-технических проблем Севера СО РАН | Powder material for laser alloying of metal surfaces |
| CN103042759A (en) * | 2012-09-27 | 2013-04-17 | 浙江工业大学 | Strengthened coating in sandwich-like structure on surface of precipitation hardening stainless steel |
| CN102990058A (en) * | 2012-12-18 | 2013-03-27 | 江苏新亚特钢锻造有限公司 | Oxide particle reinforced laser-clad high abrasion resistance cobalt-base alloy powder and preparation method thereof |
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Effective date of registration: 20160530 Address after: Wujin District of Jiangsu city in Changzhou province 213161 Chang Wu Road No. 801, Changzhou science and Technology City Tianhong building A block 8 Building Patentee after: Changzhou Tengen Industry Development Co., Ltd. Address before: 215336, Jiangsu, Zhangjiagang province Daxin Town, Daxin village, Zhangjiagang city and Suzhou Hao Laser Technology Co., Ltd. Patentee before: Zhang Lihao |
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Address after: Wujin District of Jiangsu city in Changzhou province 213161 Chang Wu Road No. 801, Changzhou science and Technology City Tianhong building A block 8 Building Patentee after: Changzhou Tianzheng industrial development Limited by Share Ltd Address before: Wujin District of Jiangsu city in Changzhou province 213161 Chang Wu Road No. 801, Changzhou science and Technology City Tianhong building A block 8 Building Patentee before: Changzhou Tengen Industry Development Co., Ltd. |