CN101145419A - Method for ferrite coated with glass material - Google Patents
Method for ferrite coated with glass material Download PDFInfo
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- CN101145419A CN101145419A CNA2006101274447A CN200610127444A CN101145419A CN 101145419 A CN101145419 A CN 101145419A CN A2006101274447 A CNA2006101274447 A CN A2006101274447A CN 200610127444 A CN200610127444 A CN 200610127444A CN 101145419 A CN101145419 A CN 101145419A
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- Prior art keywords
- ferrite
- silver
- powder
- crystallization
- coated
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Links
- 229910000859 α-Fe Inorganic materials 0.000 title claims abstract description 78
- 239000000463 material Substances 0.000 title claims abstract description 36
- 239000011521 glass Substances 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims abstract description 20
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims abstract description 30
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 29
- 238000005245 sintering Methods 0.000 claims abstract description 20
- 239000011248 coating agent Substances 0.000 claims abstract description 19
- 238000000576 coating method Methods 0.000 claims abstract description 19
- 238000009713 electroplating Methods 0.000 claims abstract description 10
- 238000007747 plating Methods 0.000 claims abstract description 10
- 238000003466 welding Methods 0.000 claims abstract description 7
- 238000002425 crystallisation Methods 0.000 claims description 27
- 230000008025 crystallization Effects 0.000 claims description 27
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 21
- 229910052709 silver Inorganic materials 0.000 claims description 18
- 239000004332 silver Substances 0.000 claims description 18
- 239000000843 powder Substances 0.000 claims description 14
- QELJHCBNGDEXLD-UHFFFAOYSA-N nickel zinc Chemical compound [Ni].[Zn] QELJHCBNGDEXLD-UHFFFAOYSA-N 0.000 claims description 11
- 208000021760 high fever Diseases 0.000 claims description 10
- 238000005516 engineering process Methods 0.000 claims description 9
- 238000005469 granulation Methods 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 4
- 230000003179 granulation Effects 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 4
- 238000002360 preparation method Methods 0.000 claims description 4
- 239000007921 spray Substances 0.000 claims description 4
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 3
- 238000002844 melting Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 3
- 239000002002 slurry Substances 0.000 claims description 3
- 230000018044 dehydration Effects 0.000 claims description 2
- 238000006297 dehydration reaction Methods 0.000 claims description 2
- 238000007598 dipping method Methods 0.000 claims description 2
- 239000002270 dispersing agent Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 claims description 2
- 239000008187 granular material Substances 0.000 claims description 2
- 239000012535 impurity Substances 0.000 claims description 2
- 229920005989 resin Polymers 0.000 claims description 2
- 239000011347 resin Substances 0.000 claims description 2
- 238000009792 diffusion process Methods 0.000 abstract description 4
- 230000005611 electricity Effects 0.000 abstract description 3
- 238000004017 vitrification Methods 0.000 abstract 4
- 238000005260 corrosion Methods 0.000 abstract 1
- 230000007797 corrosion Effects 0.000 abstract 1
- 238000002203 pretreatment Methods 0.000 abstract 1
- 230000003068 static effect Effects 0.000 abstract 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 18
- 239000004593 Epoxy Substances 0.000 description 15
- 229920003002 synthetic resin Polymers 0.000 description 13
- 239000000057 synthetic resin Substances 0.000 description 13
- 238000009413 insulation Methods 0.000 description 8
- 229910052759 nickel Inorganic materials 0.000 description 8
- 238000005507 spraying Methods 0.000 description 8
- 239000002184 metal Substances 0.000 description 7
- 229910052751 metal Inorganic materials 0.000 description 7
- 229920006334 epoxy coating Polymers 0.000 description 6
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000009977 dual effect Effects 0.000 description 4
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 229910052725 zinc Inorganic materials 0.000 description 3
- 239000011701 zinc Substances 0.000 description 3
- 208000034189 Sclerosis Diseases 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 238000003672 processing method Methods 0.000 description 2
- 150000003378 silver Chemical class 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010835 comparative analysis Methods 0.000 description 1
- 210000000981 epithelium Anatomy 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 150000002815 nickel Chemical class 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000011536 re-plating Methods 0.000 description 1
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Abstract
The invention relates to a method for coating a glass material with ferrite, which mainly comprises the following steps: pre-treatment step: providing a crystalline ferrite work piece; coating step: coating a vitrification agent on the surface of the whole crystalline ferrite work piece; sintering step: integrally sintering the vitrification agent and the crystalline ferrite work piece in a sintering furnace; silver-plating step: adhering a silver powder containing the vitrification agent to the specified surface of the crystalline ferrite work piece; silver-sintering step: integrally sintering the silver powder containing the vitrification agent and the crystalline ferrite in a silver-sintering furnace; electroplating step: delivering the ferrite core obtained in the silver-sintering step to an electroplating bath where a welding region is formed for the next welding process. The inventive method can protect the work piece against static electricity, acid-base corrosion and electroplating diffusion and ensure the work piece to have a good appearance.
Description
Technical field
The present invention relates to the machining manufacture of ferrite (Ferrite) inductor iron core, be specifically related to a kind of on ferrite coated with glass material, make the method for the preferable insulation impedance of its tool.
Background technology
General coating is a kind of sticky liquid, has flowability, is coated on the material surface; under normal temperature or heating, can make its dry sclerosis; and,, give attractive in appearance simultaneously or other specific function so as to reaching the protection object to the tough continuous epithelium of body surface set formation one deck.
In the processing and manufacturing of ferrite (Ferrite) inductor iron core of prior art nickel zinc (Ni-Zn) class, can make dual in-line package (Dualin-line package simultaneously; DIP) and surperficial cemented assembly (Surface mountdevice; SMD), made its brightness of surface unshakable in one's determination of the crystallization ferrite workpiece of any glass material of not coating is comparatively dim, the cemented assembly in this surface (Surface mount device; The silver powder of the weld part coating unshakable in one's determination of assembly SMD) containing metal material after silver burns the stove high temperature sintering, should be inserted plating one soldering-tin layer in the electroplating bath by the iron core weld part again, and form a weld part for the welding use.And the processing and manufacturing of MnZn (Mn-Zn) class ferrite (Ferrite) inductor iron core also can be made dual in-line package (Dualin-line package simultaneously; DIP) and surperficial cemented assembly (Surface mount device; SMD), yet, the made iron core of this MnZn (Mn-Zn) class ferrite (Ferrite), surface impedance is low and be tending towards short circuit phenomenon, often utilize epoxy synthetic resin spraying (EpoxyCoating) technology, coating one epoxy synthetic resin diaphragm sees also shown in the figure one in this iron core surface, this epoxy synthetic resin spraying (Epoxy Coating) technology is this MnZn (Mn-Zn) class ferrite workpiece 10 to be seen through surperficial hydro-peening earlier handle 11: remove oil rust, greasy dirt, make smooth surface simultaneously; Epoxy synthetic resin spraying 12: see through flush coater and spray this epoxy synthetic resin and adhere to form and film in this iron core surface; Drying 13: with 120～130 ℃ of temperature approximately the time 1 hour dry and facilitate and filming rapidly and to sclerosis fully; Treat cold 14: detect thickness and the detecting pore of filming;
As mentioned above, the iron core after this epoxy synthetic resin spraying (Epoxy Coating), surperficial coating one insulating barrier makes the preferable insulation impedance of its tool (IR), but only limits to make genus dual in-line package (Dual in-linepackage; DIP) assembly unshakable in one's determination of class, and can't directly use this spraying technology (Epoxy Coating) in the cemented assembly in this surface (Surface mount device; SMD) assembly unshakable in one's determination of class, its main cause are the cemented assembly of metal surface (Surface mount device; SMD) assembly unshakable in one's determination, can't directly hold the technology after the silver-colored step, be attributed in the technology after this end silver step, this silver burns the high-temperature sintering process of stove, the fat viscosity of the epoxy synthetic resin that its high fever temperature greater than this iron core adhering on surface, heavy damage should surface cemented assembly (Surfacemount device; SMD) coated film of the epoxy synthetic resin (Epoxy) that sprayed of class component unshakable in one's determination surface makes this iron core return back to again and does not spray the preceding crystallization ferrite of epoxy synthetic resin (Epoxy);
Therefore, provide a kind of ferrite of coated with glass material just can address the above problem, how a kind of processing method of ferrite coated with glass material is provided, with reach a kind of can the nickeliferous zinc of fast and convenient manufacturing (Ni-Zn), MnZn (Mn-Zn) class ferrite inductance and tool microminiaturization, low clearance SMD inductance be purpose, and effectively control its stabilised quality, and then reach preferable outward appearance and insulation impedance (IR), be the technological difficulties place that institute of the present invention desire solves.
Summary of the invention
The method that the purpose of this invention is to provide a kind of ferrite coated with glass material.
The invention provides a kind of method of ferrite coated with glass material, mainly comprise following steps:
Preposition step: crystallization ferrite workpiece is provided;
The coating step: the coated glass agent is on whole crystallization ferrite workpiece surface;
High fever step: see through sintering furnace with this vitrifying agent and the ferrite sintered one that is of crystallization;
Hold silver-colored step: the cemented silver powder of vitrifying agent that contains is in this crystallization ferrite workpiece fixed point surface;
Silver burns step: see through silver and burn silver powder and the ferrite sintered one that is of this crystallization that stove will contain vitrifying agent;
Plating step: the ferrite after silver burns step is delivered in the electroplating bath and is electroplated, and forms weld part and uses for welding;
The used vitrifying agent of the present invention can be low-melting glass slurry (B
2O
3+ SiO
2); And can containing 60% silver powder, the silver powder that contains vitrifying agent adds 30% vitrifying agent and 10% adhesive agent.
Thus; processing method by ferrite coated with glass material; with reach a kind of can the nickeliferous zinc of fast and convenient manufacturing (Ni-Zn), MnZn (Mn-Zn) class ferrite inductance and tool microminiaturization, low clearance SMD inductance be purpose; and effectively control its stabilised quality; obtain preferable outward appearance and insulation impedance (IR), so reach this workpiece of protection, meet antistatic, acid-alkali-corrosive-resisting, the purpose of attractive in appearance and anti-plate diffusion.
Description of drawings
Fig. 1 is prior art epoxy synthetic resin spraying (Epoxy Coating) work flow schematic diagram.
Fig. 2 is a ferrite coated with glass material processing step block schematic diagram of the present invention.
Fig. 3 is a crystallization ferrite workpiece preparation process block schematic diagram of the present invention.
Drawing reference numeral explanation: 10-MnZn (Mn-Zn) class ferrite workpiece; 11-surface hydro-peening is handled; The spraying of 12-epoxy synthetic resin; The 13-drying; 14-treats cold; The preposition step of 30-; 31-coating step; 32-high fever step; 33-holds silver-colored step; 34-silver burns step; The 35-plating step; 300-gets the raw materials ready; 301-is false to be burnt; The 302-granulation; The 303-model; The 304-sintering.
Embodiment
For making convenient simple and direct understanding further feature content of the present invention and advantage, the present invention cooperates Fig. 2, shown in Figure 3, is described in detail as follows:
The invention provides a kind of method of ferrite coated with glass material, mainly comprise following steps:
One, preposition step 30: a crystallization ferrite workpiece is provided, and preposition step wherein is as follows;
Get the raw materials ready 300: prepare the material powder of required specification, this powder can be MnZn (Mn-Zn) ferrite and/or nickel zinc (Ni-Zn) ferrite;
False burning 301: evenly mix through the powder of bobbing machine with this material preparation step, again this powder is poured in the saggar, and insert in the high temp tunnel stove, hold 850～950 ℃ of high fevers of temperature approximately the time 2～3 hours, burn the back natural cooling, its main purpose is to remove the impurity in this powder and make this powder structure be preliminary crystallization;
Granulation 302: this powder is inserted in the mixer, be added into resin, dispersant modulation and become a granular material, again this material is seen through drying machine approximately the time 5～10 minutes hold 170～190 ℃ of dried of temperature, and form the material of a dehydration, and see through mesh and cross and sift out suitable particle diameter material, use for next technology, the material particle size after this mesh is sieved is about 150 μ m;
Model 303:, see through the model machine this material is struck out an iron core with the material after the granulation 312;
Sintering 304: with the iron core behind the model 303, be placed in the high temperature sintering furnace, last warm 1000～1100 ℃ of high fevers of 3～4 hours hold, burn the back natural cooling, allow this iron core form a crystallization ferrite, see through unhairing machine again the burr on surface are removed;
Two, coating step 31: the coated glass agent is on whole crystallization ferrite workpiece surface, and this vitrifying agent can be low-melting glass slurry (B
2O
3+ SiO
2), its softening point can be about 550 ℃ by plasticization temperature, and this vitrifying agent can or spray the effect that reaches coating by dipping;
Three, high fever step 32: see through a sintering furnace with this vitrifying agent and the ferrite sintered one that is of crystallization, the warm processing temperature of holding of this sintering furnace is controlled at least more than 800 ℃, in the time of approximately 10～15 minutes, only need import general oxygen-containing gas in this nickel zinc (Ni-Zn) class crystallization ferrite and its sintering furnace of MnZn (Mn-Zn) class crystallization ferrite;
Four, the silver-colored step 33 of end: the crystallization ferrite that above-mentioned high fever step 32 is produced, cemented one silver powder that contains vitrifying agent is in the surface of this crystallization ferrite workpiece weld part, and this silver powder that contains vitrifying agent can contain 60% silver powder and add 30% vitrifying agent and 10% adhesive agent;
Five, silver burns step 34: see through silver burning stove this cemented crystallization ferrite workpiece sintering that contains vitrifying agent silver powder is one, this silver burns the warm processing temperature control of holding of stove at least more than 600 ℃, in the time of approximately 5～10 minutes, make the medium of this crystallization ferrite, this silver metal and this crystallization ferrite are combined into one by this vitrifying agent;
Six, plating step 35: the ferrite core after silver burns step 34 is delivered in the electroplating bath and is electroplated, forming a weld part uses for welding, an one nickel plating solution container and a tin bath solution container are set in this electroplating bath, ferrite core after the silver burning is placed in this nickel (Ni) electroplating solution container, a nickel (Ni) metal level is established in plating, again the ferrite core of this tool nickel plating (Ni) composition metal is placed in another tin (Sn) electroplating solution container, re-plating coats a metallic tin (Sn) layer, and form a weld part, ferrite (Ferrite) iron core of this nickeliferous zinc (Ni-Zn) class, made surface transparent light unshakable in one's determination, when its insulation impedance (IR) is better than this vitrifying agent of not coating, and through plating step the electricity tin, the nickel metal easily combines with this silver metal non-weld part tin does not take place, the diffusion of nickel metal, this surface cemented assembly (SMD) contain MnZn (Mn-Zn) class ferrite (Ferrite) weld part unshakable in one's determination easily electricity stanniferous, nickel metal and make things convenient for welding processing, this surface cemented assembly (SMD) contains MnZn (Mn-Zn) class ferrite (Ferrite) iron core, have the surface transparent light simultaneously concurrently, the good characteristic of insulation impedance (IR).
For making the present invention more show its progressive and practicality, to do a comparative analysis as follows: prior art with prior art hereby:
1. art methods is to utilize epoxy synthetic resin spraying (Epoxy Coating) technology, this coating epoxy The synthetic resin iron core can't be applied to high-temperature work environment.
2. should contain MnZn (Mn-Zn) class ferrite (Ferrite) though processing unshakable in one's determination can in surface cemented assembly (SMD) Reach the requirement of outward appearance and insulation impedance (IR), but can't go the end silver process processing.
Advantage of the present invention:
1. the made iron core of this vitrifying agent of coating, high temperature resistant and outward appearance and insulation impedance (IR) are good, easily reach Antistatic, acid-alkali-corrosive-resisting, attractive in appearance and anti-plate diffusion.
2. should contain MnZn (Mn-Zn) class ferrite (Ferrite) iron core in surface cemented assembly (SMD), can see through Criticize and cover the method that contains vitrifying agent, hold the processing of silver process, make this end silver process make things convenient for Yi Yuxi, nickel metal In conjunction with forming a weld part.
Claims (5)
1. a kind of method of ferrite coated with glass material is provided, it is characterized in that, mainly may further comprise the steps:
Preposition step: crystallization ferrite workpiece is provided;
The coating step: the coated glass agent is on whole crystallization ferrite workpiece surface;
High fever step: see through sintering furnace with this vitrifying agent and the ferrite sintered one that is of crystallization;
Hold silver-colored step: the cemented silver powder of vitrifying agent that contains is in this crystallization ferrite workpiece fixed point surface;
Silver burns step: see through silver and burn that stove will contain the silver powder of vitrifying agent and this crystallization is ferrite sintered is integral;
Plating step: the ferrite after silver burns step is delivered in the electroplating bath and is electroplated, and forms a weld part and uses for welding.
2. the method for a kind of ferrite coated with glass material as claimed in claim 1 is characterized in that, this preposition step comprises following processing:
Get the raw materials ready: the material powder of preparing required specification;
The false burning: evenly mix through the powder of bobbing machine with this material preparation step, again this powder is poured in the saggar, and insert in the high temp tunnel stove, hold 850～950 ℃ of high fevers of temperature approximately the time 2～3 hours, burn the back natural cooling, its main purpose is to remove the impurity of this powder and make this powder structure be preliminary crystallization;
Granulation: this powder is inserted in the mixer, be added into resin, dispersant modulation and become granular material, again this material is seen through drying machine approximately the time 5～10 minutes hold 170～190 ℃ of dried of temperature, and form the material of a dehydration, and see through mesh and cross and sift out suitable particle diameter material, use for next technology, the material particle size after this mesh is sieved is about 150 μ m;
Model:, see through the model machine this material is struck out iron core with the material after the granulation step;
Sintering: with the iron core after the model step, be placed in the high temperature sintering furnace, last warm 1000～1100 ℃ of high fevers of 3～4 hours hold, burn the back natural cooling, allow this iron core form a crystallization ferrite, see through unhairing machine again the burr on surface are removed.
3. the method for a kind of ferrite coated with glass material as claimed in claim 2 is characterized in that, the required powder of this material preparation step can be MnZn (Mn-Zn) ferrite and/or nickel zinc (Ni-Zn) ferrite.
4. the method for a kind of ferrite coated with glass material as claimed in claim 1 is characterized in that, the vitrifying agent material that this coating step is coated with can be low-melting glass slurry (B
2O
3+ SiO
2).
5. the method for a kind of ferrite coated with glass material as claimed in claim 1 is characterized in that, the vitrifying agent that this coating step is coated with can or spray the effect that reaches its coating by dipping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101274447A CN101145419A (en) | 2006-09-15 | 2006-09-15 | Method for ferrite coated with glass material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101274447A CN101145419A (en) | 2006-09-15 | 2006-09-15 | Method for ferrite coated with glass material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101145419A true CN101145419A (en) | 2008-03-19 |
Family
ID=39207863
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006101274447A Pending CN101145419A (en) | 2006-09-15 | 2006-09-15 | Method for ferrite coated with glass material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101145419A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102610359A (en) * | 2010-12-20 | 2012-07-25 | Svm舒兹特管理顾问股份有限公司 | Electromagnet with a connection area |
| CN102610359B (en) * | 2010-12-20 | 2016-12-14 | Svm舒兹特管理顾问股份有限公司 | There is the electric magnet of connecting portion |
| CN113372141A (en) * | 2021-07-08 | 2021-09-10 | 广东泛瑞新材料有限公司 | Water-plating metallization method of manganese-zinc ferrite magnetic core |
-
2006
- 2006-09-15 CN CNA2006101274447A patent/CN101145419A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102610359A (en) * | 2010-12-20 | 2012-07-25 | Svm舒兹特管理顾问股份有限公司 | Electromagnet with a connection area |
| CN102610359B (en) * | 2010-12-20 | 2016-12-14 | Svm舒兹特管理顾问股份有限公司 | There is the electric magnet of connecting portion |
| CN113372141A (en) * | 2021-07-08 | 2021-09-10 | 广东泛瑞新材料有限公司 | Water-plating metallization method of manganese-zinc ferrite magnetic core |
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