CN104715881B - A kind of alternating magnetic field generating means - Google Patents
A kind of alternating magnetic field generating means Download PDFInfo
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- CN104715881B CN104715881B CN201510020269.0A CN201510020269A CN104715881B CN 104715881 B CN104715881 B CN 104715881B CN 201510020269 A CN201510020269 A CN 201510020269A CN 104715881 B CN104715881 B CN 104715881B
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- permanent magnet
- magnetic field
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- alternating magnetic
- transverse axis
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Abstract
A kind of alternating magnetic field generating means, it includes frame, two pieces of permanent magnets, adjustable speed motor, reduction gearing, synchronous belt drive mechanism and regulating wheel, wherein, frame is made up of base, guide rail, trapezoidal plate and crossbeam, guide rail is fixed on base both sides, four trapezoidal plates two one group are located on guide rail accordingly, and the bottom between each group of trapezoidal plate is connected by two crossbeams；The middle part of two pieces of permanent magnet both sides is respectively equipped with transverse axis, transverse axis is each passed through the through hole on trapezoidal plate top and is connected with frame, the plane at two pieces of permanent magnet places is parallel to each other or intersects, the spacing of described transverse axis is 2～5 times of permanent magnet width, two drives equipped with the synchronous drive mechanism of regulating wheel are separately mounted on two permanent magnet transverse axis outside the trapezoidal plate of frame side, adjustable speed motor is located at the opposite side of frame, on the permanent magnet transverse axis outside a reduction gearing trapezoidal plate installed therein.The present invention has the advantage that simple in construction, energy-conserving and environment-protective, practicality and stability are strong.
Description
Technical field
The invention belongs to technical field of laser processing, particularly to a kind of alternating magnetic field generating means.
Background technology
Laser melting coating is the new technique that a kind of economic benefit is the highest, and it can be prepared on cheap metal base material
High performance alloy surface, reduces cost, saves valuable Rare Metals Materials.There is rate of cooling fast, be coated with
Layer dilution rate is low, and heat input and distortion are less, and technical process such as easily is automated at advantage, the laser melting coating
Technology is widely used.But cladding layer may produce number of drawbacks, mainly include pore, split
Stricture of vagina, deformation and surface irregularity so that it is industrialization is the most not yet fully achieved.
Additional alternating magnetic field laser melting and coating technique, owing to having, attachment device is simple, input cost is low, benefit
High, few feature that consumes energy and receive much concern.Additional alternating magnetic field can produce a certain degree of electricity in molten bath
Magnetic stirs, and makes liquid metal periodically stirring movement occur, change the mass transfer in molten pool metal crystallization process and
Heat transfer, thus change the crystallization direction of crystal grain, thinning microstructure, reduces segregation, reduces solidification cracking and pore
Sensitivity.
Existing alternating magnetic field generating means is many according to electromagnetic theory, the copper coil being passed through alternating current produce, system
Making high with use cost, running hours heating is serious, is not suitable for commercial production.
Summary of the invention
It is an object of the invention to provide the friendship that a kind of simple in construction, energy-conserving and environment-protective, practicality and stability are strong
Varying magnetic field generating means.
The present invention includes frame, two pieces of permanent magnets, adjustable speed motor, reduction gearing, synchronous belt drive mechanisms
And regulating wheel, wherein, frame is made up of base, guide rail, trapezoidal plate and crossbeam, and guide rail is fixed on base two
Side, four trapezoidal plates two group are located on guide rail accordingly, can be at slide on rails, and each group relative
Trapezoidal plate between bottom connected by two crossbeams；The middle part of the both sides of two pieces of permanent magnets is respectively equipped with horizontal stroke
Axle, transverse axis is each passed through the through hole on each trapezoidal plate top and is connected with frame, the plane phase at two pieces of permanent magnet places
The most parallel or crossing, the spacing of two pieces of permanent magnet transverse axis is 2～5 times of permanent magnet width, can by guide rail
Adjusting the distance between permanent magnet, two drives equipped with the synchronous drive mechanism of regulating wheel are separately mounted to
On two permanent magnet transverse axis outside the trapezoidal plate of frame side, adjustable speed motor is located at the opposite side of frame, subtracts
On permanent magnet transverse axis outside a speed gear trapezoidal plate installed therein, adjustable speed motor passes through reduction gearing
It is connected with permanent magnet, makes the relative position synchronous rotary that two pieces of permanent magnets holdings are certain.
The using method of the present invention:
1, two pieces of permanent-magnet synchronous of driven by motor rotate, and produce alternating magnetic field between two pieces of permanent magnets.
When 2, changing the angle of two pieces of permanent magnets, the functional image type of produced alternating magnetic field changes accordingly.
3, the frequency of produced alternating magnetic field is regulated: the rotating speed of regulation motor, permanent magnet rotary speed changes therewith
Become, thus the frequency respective change of alternating magnetic field.
4, the amplitude of produced alternating magnetic field is regulated: mobile two pieces of permanent magnets change its spacing on guide rail, come
Adjust the amplitude of produced alternating magnetic field.
The present invention compared with prior art has the advantage that simple in construction, energy-conserving and environment-protective, can produce multiple
The alternating magnetic field of Changing Pattern, practicality and stability are strong.
Accompanying drawing explanation
Fig. 1 is the structural representation sketch of the present invention.
Fig. 2 is two pieces of permanent magnets of present invention magnetic field intensities at symmetrical centre when being parastate synchronous rotary one week
Change curve.
Fig. 3 is two pieces of permanent magnets of present invention magnetic field intensities at symmetrical centre when being 60 degree of angle synchronous rotaries one week
Change curve.
Fig. 4 is the functional arrangement under two kinds of different motor speeds of the present invention in one cycle of alternating magnetic field.
Fig. 5 is the functional arrangement under the different permanent magnet spacing of the present invention two kinds in one cycle of alternating magnetic field.
Detailed description of the invention
In a kind of alternating magnetic field generating means schematic diagram shown in Fig. 1, frame is by base 1, guide rail 2, ladder
Shape plate 3 and crossbeam 4 form, and guide rail is fixed on base both sides, and four trapezoidal plates two group set accordingly
On guide rail, can be at slide on rails, the bottom between each group of relative trapezoidal plate is by two crossbeams even
Connect；The middle part of the both sides of two pieces of permanent magnets 5 is respectively equipped with transverse axis, and transverse axis is each passed through each trapezoidal plate top
Through hole is connected with frame, and the plane at two pieces of permanent magnet places is parallel to each other or intersects, two pieces of permanent magnet transverse axis
Spacing is 2～5 times of permanent magnet width, equipped with two drives 7 points of the synchronous drive mechanism of regulating wheel 6
Not being arranged on two permanent magnet transverse axis outside the trapezoidal plate of frame side, adjustable speed motor 9 is located at frame
Opposite side, on the permanent magnet transverse axis outside reduction gearing 8 trapezoidal plate installed therein.
The using method of the present invention:
1, two pieces of permanent-magnet synchronous of driven by motor rotate, and produce friendship as shown in Figure 2 between two pieces of permanent magnets
Varying magnetic field, the angle that in wherein X-axis represents a cycle, two pieces of permanent-magnet synchronous turn over, Y-axis represents two pieces
Magnetic field intensity at permanent magnet symmetrical centre.
When 2, changing the angle of two pieces of permanent magnets, the functional image type of produced alternating magnetic field is different from Fig. 2,
Such as two pieces permanent magnets are 60 degree of angle synchronous rotaries, and magnetic field in the cycle is as it is shown on figure 3, wherein X
Axle represents the angle that two pieces of permanent-magnet synchronous turn over, and Y-axis represents that the magnetic field at two pieces of permanent magnet symmetrical centre is strong
Degree.
3, the frequency of produced alternating magnetic field is regulated: the rotating speed of regulation motor, permanent magnet rotary speed changes therewith
Become, thus the frequency respective change of alternating magnetic field, as shown in Figure 4, wherein X-axis represents that two pieces of permanent magnets are same
The angle that step turns over, Y-axis represents the magnetic field intensity at two pieces of permanent magnet symmetrical centre, curve 1 and curve 2 table
Show the functional image of alternating magnetic field under two kinds of different motor speeds.
4, the amplitude of produced alternating magnetic field is regulated: mobile two pieces of permanent magnets change its spacing on guide rail, come
Adjusting the amplitude of produced alternating magnetic field, the functional image of alternating magnetic field changes, as it is shown in figure 5, its
Middle X-axis represents the angle that two pieces of permanent-magnet synchronous turn over, and Y-axis represents the magnetic field at two pieces of permanent magnet symmetrical centre
Intensity, curve 1 and curve 2 represent the functional image of alternating magnetic field under two kinds of different permanent magnet spacing.
Claims (2)
1. an alternating magnetic field generating means, it is characterised in that: it includes frame, permanent magnet, adjustable speed electricity
Machine, reduction gearing, synchronous belt drive mechanism and regulating wheel, wherein, frame is by base, guide rail, trapezoidal plate
Forming with crossbeam, guide rail is fixed on base both sides, and four trapezoidal plates two group are located on guide rail accordingly,
Bottom between each group of relative trapezoidal plate is connected by two crossbeams；The middle part of the both sides of two pieces of permanent magnets
Being respectively equipped with transverse axis, transverse axis is each passed through the through hole on each trapezoidal plate top and is connected with frame, two pieces of permanent magnet institutes
Plane be parallel to each other or intersect, the spacing of two pieces of permanent magnet transverse axis is 2～5 times of permanent magnet width, dress
Two drives having the synchronous drive mechanism of regulating wheel are separately mounted to two outside the trapezoidal plate of frame side
On permanent magnet transverse axis, adjustable speed motor is located at the opposite side of frame, reduction gearing installed therein one trapezoidal
On permanent magnet transverse axis outside plate, adjustable speed motor is connected with permanent magnet by reduction gearing.
2. the using method of a kind of alternating magnetic field generating means described in claim 1, it is characterised in that: (1)
Two pieces of permanent-magnet synchronous of driven by motor rotate, and produce alternating magnetic field between two pieces of permanent magnets；(2) two pieces forever
When the angle of magnet changes, the functional image type of produced alternating magnetic field changes accordingly；(3) regulation is produced
The frequency of raw alternating magnetic field: the rotating speed of regulation motor, permanent magnet rotary speed changes therewith, thus alternation magnetic
The frequency respective change of field；(4) amplitude of produced alternating magnetic field is regulated: on guide rail, move two blocks of permanent magnetism
Structural reform becomes its spacing, adjusts the amplitude of produced alternating magnetic field.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510020269.0A CN104715881B (en) | 2015-01-15 | 2015-01-15 | A kind of alternating magnetic field generating means |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510020269.0A CN104715881B (en) | 2015-01-15 | 2015-01-15 | A kind of alternating magnetic field generating means |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104715881A CN104715881A (en) | 2015-06-17 |
| CN104715881B true CN104715881B (en) | 2016-10-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510020269.0A Expired - Fee Related CN104715881B (en) | 2015-01-15 | 2015-01-15 | A kind of alternating magnetic field generating means |
Country Status (1)
| Country | Link |
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| CN (1) | CN104715881B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107017071B (en) * | 2017-04-28 | 2018-01-26 | 华中科技大学 | A kind of alternating magnetic field generating means and alternating magnetic field production method |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86100458B (en) * | 1986-01-22 | 1988-03-23 | 鞍山钢铁公司 | Demagnetization device for pm |
| CN2803431Y (en) * | 2004-09-01 | 2006-08-09 | 北京威华特医疗科技开发公司 | Device for generating high strength non-uniform alternating magnetic field from roller type rotary permanent magenet |
| EP1929943B1 (en) * | 2005-09-30 | 2013-04-17 | Hitachi Metals, Ltd. | Magnetic field control method and magnetic field generation device |
| US7479859B2 (en) * | 2006-03-08 | 2009-01-20 | Jack Gerber | Apparatus and method for processing material in a magnetic vortex |
| WO2008007771A1 (en) * | 2006-07-13 | 2008-01-17 | Hitachi Metals, Ltd. | Magnetic field control method and magnetic field generator |
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- 2015-01-15 CN CN201510020269.0A patent/CN104715881B/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN104715881A (en) | 2015-06-17 |
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161019 Termination date: 20190115 |