CN103805938A - Electromagnetic stirring molten pool device capable of improving laser nitridation effect - Google Patents
Electromagnetic stirring molten pool device capable of improving laser nitridation effect Download PDFInfo
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- CN103805938A CN103805938A CN201410065558.8A CN201410065558A CN103805938A CN 103805938 A CN103805938 A CN 103805938A CN 201410065558 A CN201410065558 A CN 201410065558A CN 103805938 A CN103805938 A CN 103805938A
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Abstract
The invention discloses an electromagnetic stirring molten pool device capable of improving a laser nitridation effect. The electromagnetic stirring molten pool device comprises a gas inlet, a gas outlet, a gas one-way valve, an airtight glass chamber, a plane machining workbench, a cylindrical electromagnetic stirring device and a variable-frequency power source, wherein the cylindrical electromagnetic stirring device comprises an iron core, a magnet exciting coil, a cylinder and an iron core support fixed in the cylinder; the magnet exciting coil is fixed at the inner side of the wall of the cylinder and is helical; the iron core is fixed at the center of the wall of the cylinder through the support; the cylindrical electromagnetic stirring device is in threaded connection with the lower surface of the upper end of the airtight glass chamber; the magnet exciting coil is connected to the variable-frequency power source through an electric wire, so that electromagnetic force is generated.
Description
Technical field
The present invention relates to a kind of device that improves nitride laser effect, refer to especially a kind of induction stirring molten bath device that improves nitride laser effect.
Background technology
Nitride laser refers to and utilizes superlaser in high pure nitrogen, metallic surface to be melted, make its surface form one deck nitride layer, nitride laser process heats up very fast, the heat input of superlaser line causes the very large thermograde of generation between molten metal layer and base material, along with laser beam stream leaves behind deposite metal, there is rapid condensation in molten bath, when condensation, thermograde causes generation tensile stress in laser melting layer, in the time that tensile stress is greater than at this temperature the strength of materials limit, there is crackle in consolidation layer metal.After superlaser warp, substrate surface temperature reduces rapidly, causes bubble to overflow completely.
In traditional nitride laser process, general direct use superlaser carries out nitriding treatment under high pure nitrogen environment, causes nitride layer to have the defects such as bubble, often can not meet industrial requirement.
Summary of the invention
Technical problem to be solved by this invention is: a kind of nitride laser induction stirring molten bath device is provided, this device is by being fixed on magnet coil cylinder barrel inner side, in the shape of a spiral, by support, iron core is fixed on to cylinder barrel central authorities, calutron and airtight glass chamber upper end lower surface are threaded connection.Magnet coil is connected by electrical wiring to variable-frequency power sources, produces electromagnetic force.
In order to address the above problem, technical scheme provided by the invention is: a kind of induction stirring molten bath device that improves nitride laser effect, this device comprises inlet mouth, air outlet, cooling gas check valve, airtight glass chamber, plane machining worktable, column electromagnetic mixing apparatus, variable-frequency power sources.Above-mentioned column electromagnetic mixing apparatus comprises iron core, magnet coil, the airtight interior secured core support of cylindrical drum, cylinder in one end.Magnet coil is fixed on to cylindrical drum inner side, in the shape of a spiral, by support, iron core is fixed on to cylinder barrel central authorities.Airtight glass chamber upper surface is opened to four equally distributed holes in 3mm left and right, also open four equally distributed holes in 3mm left and right in the airtight one end of cylindrical drum, corresponding one by one with airtight glass chamber hole, by nuts and bolt, it is closely connected.
Above-mentioned magnet coil is connected by electrical wiring to variable-frequency power sources.
Above-mentioned inlet mouth, the both sides that air outlet is positioned at airtight glass chamber, there is the hole of 10mm glass chamber both sides, connect by pipeline.
Above-mentioned check valve comprises that the first cooling gas check valve and the second cooling gas check valve are arranged on respectively on inlet mouth and air outlet pipeline.
This above-mentioned column electromagnetic mixing apparatus is by variable-frequency power sources to magnet coil energising generation work magnetic field, and magnetic field and Interaction Law of Electric Current, produce electromagnetic force and drive iron core to rotate.In airtight glass chamber by passing into high pure nitrogen, by Bas Discharged, form a nitrogen chamber, base material lies on plane machining work top, and in the time that superlaser is irradiated to substrate surface through glass, substrate surface melts rapidly, molten bath is subject to the impact of electromagnetic force direction, produce the power identical with electromagnetic force direction, form and stir, finally its surface forms one deck nitride layer again.
Above-mentioned superlaser is pulse laser or continuous wave laser.
Above-mentioned column electromagnetic mixing apparatus can be 2 or 3.
Adopt after such scheme, the invention has the beneficial effects as follows:
A. due to the existence of electromagnetic force, molten bath is subject to the impact of electromagnetic force, produces and stirs, and in the nitridation process making, bubble can flow out fast, reduces tissue defects.
B. effective crystallization control rate of growth, makes crystallization stretch toward the direction of specifying, and increases the performances such as wear resistance.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is induction stirring molten bath device fundamental diagram;
Fig. 2 is calutron and airtight glass chamber upper surface interface chart;
Fig. 3 is that calutron is connected vertical view with airtight glass chamber upper surface;
In accompanying drawing: 11. second cooling gas check valves; 12. first cooling gas check valves; 13. plane machining worktable; 14. workpieces; 15. airtight glass chambers; 16. variable-frequency power sourcess; 17. superlasers; 18. column electromagnetic mixing apparatus; 19. electric wires; 111. inlet mouth; 112 air inlet duct; 113. air outlet pipelines; 114. air outlet; 21. airtight glass chamber upper surfaces; 22. nuts and bolts connect; 23 1 sections of airtight cylindrical barrels; 24. magnet coils; 31. secured core supports; 32. iron cores.
Concrete real mode
Below by specific embodiment, the present invention is described in further detail.
As shown in Figure 2 and Figure 3, magnet coil 24 is fixed on to one section of airtight cylindrical drum 23 inner side, in the shape of a spiral, by secured core support 31, iron core 32 is fixed on to cylinder barrel central authorities, form a column electromagnetic mixing apparatus 18.As shown in Figure 1, by variable-frequency power sources 16, to magnet coil energising generation work magnetic field, magnetic field and Interaction Law of Electric Current, produce electromagnetic force and drive iron core to rotate.High pure nitrogen enters airtight glass chamber 15 by air inlet duct 112, the first cooling gas check valve 12, inlet mouth 111, flow out from air outlet 114, the second cooling gas check valve 11, air outlet pipeline 113, by the Bas Discharged in airtight glass chamber 15, make airtight glass chamber form a nitrogen chamber.Open four equally distributed holes in 3mm left and right at airtight glass chamber upper surface, open four holes corresponding with airtight glass chamber upper surface in airtight cylindrical drum one side of column electromagnetic mixing apparatus, make this column electromagnetic mixing apparatus to connect 22 by nuts and bolt.Workpiece 14 is lain on 13 of plane machining worktable, in the time that superlaser 17 is irradiated to workpiece 14 surface through glass, melt rapidly on workpiece 14 surfaces, magnet coil 24 is connected to variable-frequency power sources 16 by electric wire 19, molten bath is subject to the impact of electromagnetic force direction, produce the power identical with electromagnetic force direction, form and stir, finally its surface forms one deck nitride layer again.Carry out metallurgical analysis by the nitride layer that this device nitride laser is crossed, find without bubble, defects i.e.cracks, by the growing direction of electromagnetic force crystallization control, increase nitride layer wear resisting property.
Above-described embodiment is only preferred version of the present invention, is not limited to the present invention, and to those of ordinary skill in the art, the present invention, on above-mentioned said basis, can have various modifications and variations.Cannot enumerate all embodiments at this.All within principle of the present invention, or within the apparent variation of being amplified out by spirit of the present invention all should be included in protection scope of the present invention.
Claims (7)
1. an induction stirring molten bath device that improves nitride laser effect, this device comprises inlet mouth, air outlet, cooling gas check valve, airtight glass chamber, plane machining worktable, column electromagnetic mixing apparatus, variable-frequency power sources.It is characterized in that: described column electromagnetic mixing apparatus comprises iron core, magnet coil, the airtight interior secured core support of cylindrical drum, cylinder in one end.Magnet coil is fixed on to cylindrical drum inner side, in the shape of a spiral, by support, iron core is fixed on to cylinder barrel central authorities.Airtight glass chamber upper surface is opened to four equally distributed holes in 3mm left and right, also open four equally distributed holes in 3mm left and right in the airtight one end of cylindrical drum, corresponding one by one with airtight glass chamber hole, by nuts and bolt, it is closely connected.
2. a kind of induction stirring molten bath device that improves nitride laser effect according to claim 1, is characterized in that: described magnet coil is connected by electrical wiring to variable-frequency power sources.
3. according to a kind of induction stirring molten bath device that improves nitride laser effect described in claim 1-2, it is characterized in that: described inlet mouth, the both sides that air outlet is positioned at airtight glass chamber, there is the hole of 10mm glass chamber both sides, connect by pipeline.
4. according to a kind of induction stirring molten bath device that improves nitride laser effect described in claim 1-3, it is characterized in that: described check valve comprises that the first cooling gas check valve and the second cooling gas check valve are arranged on respectively on inlet mouth and air outlet pipeline.
5. according to a kind of induction stirring molten bath device that improves nitride laser effect described in claim 1-4, it is characterized in that: this described column electromagnetic mixing apparatus by variable-frequency power sources to magnet coil energising generation work magnetic field, magnetic field and Interaction Law of Electric Current, produce electromagnetic force and drive iron core to rotate.In airtight glass chamber by passing into high pure nitrogen, by Bas Discharged, form a nitrogen chamber, base material lies on plane machining work top, and in the time that superlaser is irradiated to substrate surface through glass, substrate surface melts rapidly, molten bath is subject to the impact of electromagnetic force direction, produce the power identical with electromagnetic force direction, form and stir, finally its surface forms one deck nitride layer again.
6. according to a kind of induction stirring molten bath device that improves nitride laser effect described in claim 1-5, it is characterized in that: described superlaser is pulse laser or continuous wave laser.
7. according to a kind of induction stirring molten bath device that improves nitride laser effect described in claim 1-6, it is characterized in that: described column electromagnetic mixing apparatus can be 2 or 3.
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| CN201410065558.8A CN103805938B (en) | 2014-02-26 | 2014-02-26 | Electromagnetic stirring molten pool device capable of improving laser nitridation effect |
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| CN201410065558.8A CN103805938B (en) | 2014-02-26 | 2014-02-26 | Electromagnetic stirring molten pool device capable of improving laser nitridation effect |
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| CN103805938A true CN103805938A (en) | 2014-05-21 |
| CN103805938B CN103805938B (en) | 2017-04-12 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| PL423210A1 (en) * | 2017-10-19 | 2019-04-23 | Instytut Mech Precyzyjnej | Method for glow-discharge nitriding of inner surfaces of bushings, preferably barrels |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1072656A (en) * | 1996-08-30 | 1998-03-17 | Agency Of Ind Science & Technol | Method for hardening surface of titanium series material |
| CN101385953A (en) * | 2008-10-28 | 2009-03-18 | 中国长江航运集团电机厂 | Separate type electromagnetic agitator and use thereof |
| CN101509730A (en) * | 2008-08-08 | 2009-08-19 | 张森林 | Bottom assembling electromagnetic agitator for direct current excitation smelting furnace |
| CN202993889U (en) * | 2012-11-21 | 2013-06-12 | 沈阳航空航天大学 | Electromagnetic stirring device |
| CN103273201A (en) * | 2013-02-27 | 2013-09-04 | 沈阳航空航天大学 | Permanent-magnet electromagnetic stirring device for titanium alloy laser repair |
-
2014
- 2014-02-26 CN CN201410065558.8A patent/CN103805938B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1072656A (en) * | 1996-08-30 | 1998-03-17 | Agency Of Ind Science & Technol | Method for hardening surface of titanium series material |
| CN101509730A (en) * | 2008-08-08 | 2009-08-19 | 张森林 | Bottom assembling electromagnetic agitator for direct current excitation smelting furnace |
| CN101385953A (en) * | 2008-10-28 | 2009-03-18 | 中国长江航运集团电机厂 | Separate type electromagnetic agitator and use thereof |
| CN202993889U (en) * | 2012-11-21 | 2013-06-12 | 沈阳航空航天大学 | Electromagnetic stirring device |
| CN103273201A (en) * | 2013-02-27 | 2013-09-04 | 沈阳航空航天大学 | Permanent-magnet electromagnetic stirring device for titanium alloy laser repair |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| PL423210A1 (en) * | 2017-10-19 | 2019-04-23 | Instytut Mech Precyzyjnej | Method for glow-discharge nitriding of inner surfaces of bushings, preferably barrels |
| PL234237B1 (en) * | 2017-10-19 | 2020-01-31 | Instytut Mech Precyzyjnej | Method for glow-discharge nitriding of inner surfaces of bushings, preferably barrels |
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