CN109637785A - Network transformer and its method for laser welding - Google Patents
Network transformer and its method for laser welding Download PDFInfo
- Publication number
- CN109637785A CN109637785A CN201910019378.9A CN201910019378A CN109637785A CN 109637785 A CN109637785 A CN 109637785A CN 201910019378 A CN201910019378 A CN 201910019378A CN 109637785 A CN109637785 A CN 109637785A
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- China
- Prior art keywords
- laser
- ceramic
- ceramic skeleton
- skeleton
- network transformer
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/30—Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
- H01F27/306—Fastening or mounting coils or windings on core, casing or other support
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B37/00—Joining burned ceramic articles with other burned ceramic articles or other articles by heating
- C04B37/001—Joining burned ceramic articles with other burned ceramic articles or other articles by heating directly with other burned ceramic articles
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
- C04B2237/50—Processing aspects relating to ceramic laminates or to the joining of ceramic articles with other articles by heating
- C04B2237/52—Pre-treatment of the joining surfaces, e.g. cleaning, machining
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Laser Beam Processing (AREA)
Abstract
The present invention discloses a kind of network transformer and its method for laser welding, the network transformer include be linear type earthenware slab and ceramic skeleton made of oxide system ceramic matric composite, the bonding position of the two forms one using laser welding.Its laser step includes S1, in the region sanding and polishing that earthenware slab and ceramic skeleton will be combined, wears into smooth weldering crystal face；S2, earthenware slab and ceramic skeleton are located in laser beam irradiation area, the laser impulse hunting mode big using output power peak value, first bond area is radiated at non-focusing laser beam to be preheated, the focusing laser irradiation for recycling high-energy density makes the bond area of earthenware slab and ceramic skeleton that fusion welding occur；S3, natural cooling form one.It is welded using the high temperature melting of laser, so that there is no the problems that falls off for the skeleton permanent bond of transformer, and exempt additional increase structural member, simplifies structure.
Description
Technical field
The present invention relates to field transformer technology, a kind of network transformer and its method for laser welding are referred in particular to.
Background technique
Ceramic material have fusing point is high, elevated temperature strength is high, hardness is high, high-temerature creep is small, it is anti-oxidant, corrosion-resistant, wear-resistant,
The advanced configuration of elasticity modulus height and thermal expansion coefficient small equal excellent performances and feature, has in industrial application and widely answers
Use prospect.
Transformer preferably uses ceramic material.From structure, transformer generally has I-shaped skeleton and linear type bone
Frame, coil winding fit closely after I-shaped skeleton, then by "-" type skeleton and I-shaped skeleton.Present mainstream is bonded work
There are two types of skills, first is that using gluing knot.Second is that being compressed with other structural member, such as agrafe.However both the above combination is equal
There are drawbacks: one, gluing knot product, the colloid for bonding is easy to aging, and colloidality weakens after long-time service, causes to fall off.Two, it uses
Although the mode that agrafe compresses can guarantee product, long-time service is not fallen off, and needs to increase additional knot component, structural member
Assembly meeting occupied space, so that product is difficult to be made smaller；In addition, structural member needs additional production and processing and assembly, cause
The cost of product is high.
Summary of the invention
In view of this, in view of the deficiencies of the prior art, the present invention aims to provide a kind of network transformers
And its method for laser welding is integrally formed, permanently using the bound fraction of ceramics above and below the high temperature melting of laser after cooling
In conjunction with the problem that falls off, and the additional increase structural member of release is not present, simplify structure.
To achieve the above object, the present invention is using following technical solution:
A kind of network transformer, including linear type earthenware slab and ceramic skeleton, coiling coil, the ceramics on the ceramic skeleton
Plate and ceramic skeleton are oxide system ceramic matric composites, and the bonding position use of the earthenware slab and ceramic skeleton swashs
Photocoagulation forms one.
As a preferred embodiment, the ceramic skeleton is multistage I-shaped skeleton, has three-level coiling section, ceramic bone
The both ends of frame are head plate and tailgate, and intermediate two panels is partition, and the core of ellipse is passed sequentially through between the head plate, two partitions and tailgate
Column connection.
As a preferred embodiment, the two sides of the head plate, tailgate and two partitions are recessed with crossed beam trunking.
As a preferred embodiment, the ceramic skeleton is integral structure.
As a preferred embodiment, oxide system ceramic matric composite is oxide ceramics basis material or non-
Oxide ceramics basis material and oxidation iron/zinc/nickel mixture.
A kind of method of laser welding network transformer, includes the following steps
S1 wears into smooth weldering crystal face in the region sanding and polishing that earthenware slab and ceramic skeleton will be combined；
Earthenware slab and ceramic skeleton are located in laser beam irradiation area by S2, and laser is using output power peak value big
Impulse hunting mode is first radiated at bond area with non-focusing laser beam and is preheated, recycles the focusing of high-energy density
Laser irradiation makes the bond area of earthenware slab and ceramic skeleton that fusion welding occur；
S3, natural cooling form one.
As a preferred embodiment, in step S2, preheating time 0.5mS, temperature 1300K.
As a preferred embodiment, in step S2, laser welding pulsewidth is 1 ~ 3ms, welding energy 400W or more, and solder joint is straight
Diameter size is 0.2+/- 0.05mm, and the solder joint of each bond area is one-point or multi-point.
The present invention has obvious advantages and beneficial effects compared with the existing technology, specifically, by above-mentioned technical proposal
It is found that directly the linear type earthenware slab and ceramic skeleton of ceramic material are combined due to by the way of laser welding
Come, forms an entirety, product quality is preferable, and reliability is higher, and there is no the problems of falling off, and does not need additional structural member
It is fixed, so that skeleton remains original size.And setting different pulsewidth and laser energy by laser welding can
To modulate required engaging force and inductance value.
In order to explain the structural features and functions of the invention more clearly, come with reference to the accompanying drawing with specific embodiment to this hair
It is bright to be described in detail.
Detailed description of the invention
Fig. 1 is the schematic perspective view of embodiments of the present invention.
Fig. 2 is the main view of embodiments of the present invention.
Fig. 3 is the left view of embodiments of the present invention.
Description of drawing identification:
10, earthenware slab 20, ceramic skeleton
21, head plate 22, tailgate
23, partition 24, stem
25, crossed beam trunking 31, bond area
32, solder joint.
Specific embodiment
It please refers to shown in Fig. 1 to Fig. 3, it to be a kind of network that show the specific structures of the preferred embodiments of the invention
Transformer, including linear type earthenware slab 10 and ceramic skeleton 20, coiling coil, the earthenware slab 10 on the ceramic skeleton 20
One is formed using laser welding with the bonding position of ceramic skeleton 20.
Wherein, the earthenware slab 10 and ceramic skeleton 20 are oxide system ceramic matric composites.In the present embodiment, institute
State oxide system ceramic matric composite be oxide ceramics basis material or non-oxide ceramics basis material and iron oxide/
Zinc/nickel mixture.Wherein, oxide ceramics basis material refers to MgO, Al2O3、SiO2、ZrO2Or mullite etc..It is described
Non-oxide ceramics basis material refers to Si3N4, SiC etc..
The ceramic skeleton 20 is multistage I-shaped skeleton, has three-level coiling section, and the both ends of ceramic skeleton 20 are head
Plate 21 and tailgate 22, intermediate two panels are partitions 23, and the core of ellipse is passed sequentially through between the head plate 21, two partitions 23 and tailgate 22
Column 24 connects.The ceramic skeleton 20 is integral structure, and the two sides of the head plate 21, tailgate 22 and two partitions 23 are recessed with
Crossed beam trunking 25.
Based on the structure of above-mentioned network transformer, the present invention also for a kind of method of laser welding network transformer,
Include the following steps
S1 wears into smooth weldering crystal face in the region sanding and polishing that earthenware slab 10 and ceramic skeleton 20 will be combined.
Earthenware slab 10 and ceramic skeleton 20 are located in laser beam irradiation area by S2, and laser uses output power
The big impulse hunting mode of peak value is first radiated at bond area 31 with non-focusing laser beam and is preheated, and recycles high-energy
The focusing laser irradiation of density makes the bond area 31 of earthenware slab 10 and ceramic skeleton 20 that fusion welding occur.
S3, natural cooling form one.
In step S2, preheating time 0.5mS, temperature 1300K.Laser welding pulsewidth is 1 ~ 3ms, welding energy 400W
More than, 32 diameter of solder joint is 0.2+/-0.05Mm, the solder joint 32 of each bond area 31 are one-point or multi-point.
Method for laser welding of the invention passes through many experiments and verifying, has counted following experimental data table:
Laser welding data statistic:
Binding test process and upper table test data, it can be deduced that following several conclusions:
(1) under the premise of remaining welding condition is constant, when the welding energy of laser is lower, binding force is smaller, postwelding electricity
Inductance value is bigger.
(2) under the premise of remaining welding condition is constant, reduce the pulsewidth of laser, postwelding inductance value will increase.
(3) binding force of product can be increased by increasing by 32 quantity of solder joint when Laser Welding, and be influenced on its postwelding inductance value little.
(4) preheating 0.5mS welds 1 ~ 3ms of pulsewidth, welding energy 400W or more, and 32 diameter of solder joint is 0.2+/-0.05mm
Several places of multiple spot welding as far as possible when end face is welded.3 ~ 5 kilogram of weldment pressure.
In conclusion design focal point of the invention is, due to by the way of laser welding, directly by ceramic material
Linear type earthenware slab 10 and ceramic skeleton 20 combine, form an entirety, product quality is preferable, and reliability is higher,
There is no the problems of falling off, and do not need additional structural member and be fixed, so that skeleton remains original size.And lead to
Required engaging force and inductance value can be modulated by crossing laser welding and setting different pulsewidth and laser energy.
The above described is only a preferred embodiment of the present invention, be not intended to limit the scope of the present invention,
Therefore any subtle modifications, equivalent variations and modifications to the above embodiments according to the technical essence of the invention, still
Belong in the range of technical solution of the present invention.
Claims (8)
1. a kind of network transformer, it is characterised in that: including linear type earthenware slab and ceramic skeleton, coiling on the ceramic skeleton
Coil, the earthenware slab and ceramic skeleton are oxide system ceramic matric composites, the earthenware slab and ceramic skeleton
Bonding position forms one using laser welding.
2. network transformer according to claim 1, it is characterised in that: the ceramic skeleton is multistage I-shaped skeleton,
With three-level coiling section, the both ends of ceramic skeleton are head plate and tailgate, and intermediate two panels is partition, the head plate, two partitions and tail
The stem connection of ellipse is passed sequentially through between plate.
3. network transformer according to claim 2, it is characterised in that: the two sides of the head plate, tailgate and two partitions are equal
It is recessed with crossed beam trunking.
4. network transformer according to claim 1, it is characterised in that: the ceramic skeleton is integral structure.
5. network transformer according to claim 1, it is characterised in that: oxide system ceramic matric composite is oxygen
Compound ceramic matrix material or non-oxide ceramics basis material and oxidation iron/zinc/nickel mixture.
6. a kind of method of any one of laser welding claim 1-5 network transformer, it is characterised in that: include the following steps
S1 wears into smooth weldering crystal face in the region sanding and polishing that earthenware slab and ceramic skeleton will be combined；
Earthenware slab and ceramic skeleton are located in laser beam irradiation area by S2, and laser is using output power peak value big
Impulse hunting mode is first radiated at bond area with non-focusing laser beam and is preheated, recycles the focusing of high-energy density
Laser irradiation makes the bond area of earthenware slab and ceramic skeleton that fusion welding occur；
S3, natural cooling form one.
7. the method for laser welding network transformer according to claim 6, it is characterised in that: in step S2, when preheating
Between be 0.5mS, temperature 1300K.
8. the method for laser welding network transformer according to claim 6, it is characterised in that: in step S2, Laser Welding
Connecing pulsewidth is 1 ~ 3ms, and welding energy 400W or more, spot size size is 0.2+/- 0.05mm, the solder joint of each bond area
For one-point or multi-point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910019378.9A CN109637785A (en) | 2019-01-09 | 2019-01-09 | Network transformer and its method for laser welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910019378.9A CN109637785A (en) | 2019-01-09 | 2019-01-09 | Network transformer and its method for laser welding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109637785A true CN109637785A (en) | 2019-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910019378.9A Pending CN109637785A (en) | 2019-01-09 | 2019-01-09 | Network transformer and its method for laser welding |
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| CN (1) | CN109637785A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021021687A1 (en) * | 2019-07-26 | 2021-02-04 | The Regents Of The University Of California | Ultrafast laser welding of ceramics |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020021201A1 (en) * | 2000-07-21 | 2002-02-21 | Takaaki Ol | Choke coil |
| CN101327549B (en) * | 2008-07-31 | 2010-10-27 | 华南理工大学 | Non-solder laser welding method and device of network transformator |
| CN203338948U (en) * | 2013-07-26 | 2013-12-11 | 慈溪市思诺电子有限公司 | Framework structure of horizontal transformer |
| CN104671819A (en) * | 2015-02-12 | 2015-06-03 | 华中科技大学 | Laser connection method for ceramics |
-
2019
- 2019-01-09 CN CN201910019378.9A patent/CN109637785A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020021201A1 (en) * | 2000-07-21 | 2002-02-21 | Takaaki Ol | Choke coil |
| CN101327549B (en) * | 2008-07-31 | 2010-10-27 | 华南理工大学 | Non-solder laser welding method and device of network transformator |
| CN203338948U (en) * | 2013-07-26 | 2013-12-11 | 慈溪市思诺电子有限公司 | Framework structure of horizontal transformer |
| CN104671819A (en) * | 2015-02-12 | 2015-06-03 | 华中科技大学 | Laser connection method for ceramics |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021021687A1 (en) * | 2019-07-26 | 2021-02-04 | The Regents Of The University Of California | Ultrafast laser welding of ceramics |
| US20220281774A1 (en) * | 2019-07-26 | 2022-09-08 | The Regents Of The University Of California | Ultrafast laser welding of ceramics |
| EP4003938A4 (en) * | 2019-07-26 | 2023-08-30 | The Regents of The University of California | Ultrafast laser welding of ceramics |
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Application publication date: 20190416 |