CN204022940U - The collaborative laser cladding apparatus of a kind of electricity-magnetic Composite Field - Google Patents
The collaborative laser cladding apparatus of a kind of electricity-magnetic Composite Field Download PDFInfo
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- CN204022940U CN204022940U CN201420450911.XU CN201420450911U CN204022940U CN 204022940 U CN204022940 U CN 204022940U CN 201420450911 U CN201420450911 U CN 201420450911U CN 204022940 U CN204022940 U CN 204022940U
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Abstract
The utility model discloses the collaborative laser cladding apparatus of a kind of electricity-magnetic Composite Field, comprise laser apparatus, Laser Transmission passage, powder-feeding head, treat cladding matrix and field generator for magnetic, treat that cladding matrix two ends are provided with work holder, two work holders are connected with low-voltage high-current power source by wire respectively.This programme is carrying out in laser cladding process, extra electric field and externally-applied magnetic field are coupling in workpiece simultaneously, make the conductive fluid in region, molten bath be subject to the synergy of electricity-magnetic Composite Field, produce controlled Lorentz force, with the heat and mass behavior in regulation and control laser cladding process, can realize the taxis control of molten bath convection current, reach regulation and control solidified structure, optimize workpiece mechanical property, adjust solute element or additional hard phase and distribute, improve the objects such as cladding layer surface topography.Realize the electricity-magnetic Composite Field Collaborative Control to molten bath due to laser, there is the features such as ability of regulation and control is strong, regulation and control type is flexible, applied widely.
Description
Technical field
The utility model belongs to laser fabrication technology field, is specifically related to the device of the collaborative laser melting coating of a kind of electricity-magnetic Composite Field.
Background technology
Laser melting and coating technique refers to adopt different solute elements or the addition means of hard phase, add cladding material at matrix surface, after laser irradiation, cladding material and matrix surface are melted simultaneously and produce molten bath, form low dilution rate and be the surface coating of metallurgical binding with matrix through rapid solidification.Laser melting and coating technique is also the basis that laser in combination increases material manufacture and laser 3D printing technique simultaneously.The principal feature that laser melting coating has is: heat input and workpiece deformation are less; Cladding layer and matrix are metallurgical binding; Cladding material consumption is few, has good cost performance; Cladding process is easily realized the advantages such as automatization.But also there are some common problems simultaneously in laser melting coating:
(1) adjusting of laser technical parameters can only change the external heat transfer border in cladding layer molten bath, and therefore the direction of motion of uncontrollable molten bath internal flow be difficult to control the taxis of solidification layer tissue and performance by simple adjusting laser technical parameters;
(2) under the rapid solidification condition of laser melting coating, cladding layer very easily forms form, the different inhomogeneous solidified structure of size and Orientation, and the pore in cladding layer and the microdefect such as be mingled with and be often difficult to discharge in time and remain in cladding tissue, has had a strong impact on the quality of cladding layer;
(3), under the effect of irradiation of laser high energy beam, cladding layer molten bath occurs to stir consumingly, causes solute element or hard phase chaotic distribution, is difficult to realize its layering or gradient control in individual layer laser cladding process.
For the problems referred to above, Chinese scholars is attempting utilizing externally-applied magnetic field to regulate and control laser welding and cladding process.The scholar's research such as M.Bachmann the steady magnetic field that permanent magnet provides and the impact of the alternating magnetic field providing with electro-magnet on aluminium alloy deep penetration welding process be provided.Result of study shows that steady magnetic field can suppress the convection current in molten bath, and then improves cross section and the surface topography of weld seam, suppresses the splash phenomena in welding process, and alternating magnetic field has affected the pressure distribution of weld seam molten bath upper and lower surface, can optimize weldquality.The people such as domestic Liu Hong happiness adopt the method for additional rotatingfield to obtain crystal grain compared with the cladding layer of refinement, and have studied the mechanism that under rotatingfield condition, cladding layer columnar dendrite transforms to equiax crystal.
Under simple steady magnetic field effect, because lorentz's force direction is contrary with molten bath flow direction all the time, therefore simple steady magnetic field can only be to the molten bath restraining effect that flowed, and the directivity of being moved in molten bath is without obvious effect.The alternation lorentz's force that rotatingfield forms in molten bath cannot form unidirectional body force in inside, molten bath, cannot flow and produce taxis impact molten bath, can only play the effect of homogenizing tissue.Therefore, existing simple magnetic field is single and ability of regulation and control is limited to the regulation and control form of laser cladding process, and proposition of the present utility model will effectively address the above problem.
Summary of the invention
In order to solve above-mentioned technical problem, the purpose of this utility model is to provide the collaborative laser cladding apparatus of a kind of electricity-magnetic Composite Field, by changing intensity, direction and the frequency of applied magnetic and electric fields, formed lorentz's force is control effectively, to realize the effective control to the behavior of cladding layer Bath Heat-Transfer mass transfer, reach regulation and control solidified structure, optimize workpiece mechanical property, adjust solute element or additional hard phase and distribute, improve the objects such as cladding layer surface topography.
To achieve the above object, the utility model has adopted following technical scheme:
The collaborative laser cladding apparatus of a kind of electricity-magnetic Composite Field, comprise laser apparatus, Laser Transmission passage, powder-feeding head, treat cladding matrix and field generator for magnetic, describedly treat that cladding matrix two ends are provided with work holder, two work holders are connected with low-voltage high-current power source by wire respectively.
As preferably, described field generator for magnetic is permanent magnet, and permanent magnet is arranged in treats cladding matrix both sides or bottom.
As preferably, described field generator for magnetic is excitation unit, and excitation unit and Laser Transmission passage coaxially assemble, powder-feeding head and Laser Transmission passage coaxial combination.
The utility model, owing to having adopted above technical scheme, has following advantage:
(1) overcome under single the action of a magnetic field, the defect of uncontrollable molten bath convection current taxis, by regulating the different cooperative modes of electricity-magnetic Composite Field, coordinate suitable laser technical parameters, can realize the constituency customization strengthening of microstructure of surface cladding layer, solute element, hard phase and performance;
(2), due to the introducing of extra electric field, greatly improved reactive force and the functioning efficiency of simple magnetic field to molten bath due to laser;
(3) the required large electric current of additional electric field obtain with control relative high-intensity magnetic field want much easy and cheap, and the flexible regulation and control of collaborative direction, size and the frequency that can realize lorentz's force of electricity-magnetic Composite Field.
Brief description of the drawings
Fig. 1 is the apparatus structure schematic diagram of embodiment 1;
Fig. 2 is the apparatus structure schematic diagram of embodiment 2.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is made a detailed explanation.
Embodiment 1:
As shown in Figure 1 a kind of utilizes the device of the collaborative laser melting coating of electricity-magnetic Composite Field that excitation unit provides vertical direction steady magnetic field, comprise laser apparatus 1, Laser Transmission passage 2, powder-feeding head 3, excitation unit, work holder 5, wire 7, low-voltage, high-current electricity 8, wherein laser apparatus 1 can be connected by flexible optical fibre or flight light path with Laser Transmission passage 2, powder-feeding head 3, Laser Transmission passage 2 and excitation unit coaxial cooperation, work holder 6 is arranged in workpiece (treating cladding matrix) 5 both sides as requested, work holder 6 is connected with low-voltage high-current power source 8 by wire 7.
Embodiment 2:
As the permanent magnet that utilizes of Fig. 2 provides the device of the collaborative laser melting coating of electricity-magnetic Composite Field of horizontal direction steady magnetic field, comprise laser apparatus 1, Laser Transmission passage 2, powder-feeding head 3, permanent magnet 9, work holder 6, wire 7, low-voltage high-current power source 8, wherein laser apparatus 1 can be connected by flexible optical fibre or flight light path with Laser Transmission passage 2, powder-feeding head 3 and Laser Transmission passage 2 coaxial cooperation, permanent magnet 9 is arranged in workpiece (treating cladding matrix) 5 both sides, work holder 6 is arranged in workpiece 5 two ends, work holder 6 is connected with low-voltage high-current power source 8 by wire 7.
It is emphasized that: be only preferred embodiment of the present utility model above, not the utility model is done to any pro forma restriction, any simple modification, equivalent variations and modification that every foundation technical spirit of the present utility model is done above embodiment, all still belong in the scope of technical solutions of the utility model.
Claims (3)
1. the collaborative laser cladding apparatus of electricity-magnetic Composite Field, comprise laser apparatus (1), Laser Transmission passage (2), powder-feeding head (3), treat cladding matrix (5) and field generator for magnetic, it is characterized in that, describedly treat that cladding matrix (5) two ends are provided with work holder (6), two work holders (6) are connected with low-voltage high-current power source (8) by wire (7) respectively.
2. the collaborative laser cladding apparatus of a kind of electricity-magnetic Composite Field according to claim 1, is characterized in that, described field generator for magnetic is permanent magnet (9), and permanent magnet (9) is arranged in treats cladding matrix (5) both sides or bottom.
3. the collaborative laser cladding apparatus of a kind of electricity-magnetic Composite Field according to claim 1, it is characterized in that, described field generator for magnetic is excitation unit, excitation unit and Laser Transmission passage (2) coaxially assemble, powder-feeding head (3) and Laser Transmission passage (2) coaxial combination.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420450911.XU CN204022940U (en) | 2014-08-11 | 2014-08-11 | The collaborative laser cladding apparatus of a kind of electricity-magnetic Composite Field |
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| CN201420450911.XU CN204022940U (en) | 2014-08-11 | 2014-08-11 | The collaborative laser cladding apparatus of a kind of electricity-magnetic Composite Field |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104195541A (en) * | 2014-08-11 | 2014-12-10 | 浙江工业大学 | Electric-magnetic compound field synergy laser-cladding method and device |
| CN106567072A (en) * | 2016-11-18 | 2017-04-19 | 浙江工业大学 | Electricity-magnetism compound field synergistic laser cladding device supplied with magnesium by permanent magnet |
| CN109972135A (en) * | 2019-05-17 | 2019-07-05 | 南阳师范学院 | A kind of laser cladding device and its laser head for laser cladding device |
| CN110117790A (en) * | 2019-06-27 | 2019-08-13 | 衢州学院 | Laser cladding apparatus |
| CN110527997A (en) * | 2018-05-24 | 2019-12-03 | 魏永强 | A kind of DC electric field-travelling-magnetic-field complex method improving quality of cladding layer |
| CN113584475A (en) * | 2021-07-29 | 2021-11-02 | 浙江工业大学 | Device and method for filling laser cladding lap joint depression by iron-based powder guided by magnetic field |
-
2014
- 2014-08-11 CN CN201420450911.XU patent/CN204022940U/en active Active
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104195541A (en) * | 2014-08-11 | 2014-12-10 | 浙江工业大学 | Electric-magnetic compound field synergy laser-cladding method and device |
| CN104195541B (en) * | 2014-08-11 | 2017-02-15 | 浙江工业大学 | Electric-magnetic compound field synergy laser-cladding method and device |
| CN106567072A (en) * | 2016-11-18 | 2017-04-19 | 浙江工业大学 | Electricity-magnetism compound field synergistic laser cladding device supplied with magnesium by permanent magnet |
| CN106567072B (en) * | 2016-11-18 | 2019-04-09 | 浙江工业大学 | A kind of permanent magnet cooperates with laser cladding apparatus for electricity-magnetic Composite Field of magnetic |
| CN110527997A (en) * | 2018-05-24 | 2019-12-03 | 魏永强 | A kind of DC electric field-travelling-magnetic-field complex method improving quality of cladding layer |
| CN109972135A (en) * | 2019-05-17 | 2019-07-05 | 南阳师范学院 | A kind of laser cladding device and its laser head for laser cladding device |
| CN110117790A (en) * | 2019-06-27 | 2019-08-13 | 衢州学院 | Laser cladding apparatus |
| CN110117790B (en) * | 2019-06-27 | 2024-01-30 | 衢州学院 | Laser cladding device |
| CN113584475A (en) * | 2021-07-29 | 2021-11-02 | 浙江工业大学 | Device and method for filling laser cladding lap joint depression by iron-based powder guided by magnetic field |
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