CN102013368A - Fuse with built-in thermal-protective coating and manufacture process thereof - Google Patents
Fuse with built-in thermal-protective coating and manufacture process thereof Download PDFInfo
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- CN102013368A CN102013368A CN2010102991852A CN201010299185A CN102013368A CN 102013368 A CN102013368 A CN 102013368A CN 2010102991852 A CN2010102991852 A CN 2010102991852A CN 201010299185 A CN201010299185 A CN 201010299185A CN 102013368 A CN102013368 A CN 102013368A
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Abstract
The invention relates to a fuse and a production process thereof, wherein the fuse comprises a glass-ceramic substrate, a fusible metallic conductor built in the glass-ceramic substrate, a thermal-protective coating arranged on at least one face of the fusible metallic conductor, and a terminal electrode arranged on the glass-ceramic substrate, and the thermal-protective coating is made of a porous glass-ceramic composite material. In the manufacture process, an ultraviolet curing technology is utilized, and the fuse is produced through low temperature cofiring after UV (ultraviolet) curing. The thermal-protective coating has low heat conductivity, so that the radiating of the metallic conductor is effectively reduced, and the required resistance is much smaller at the fuse demand of certain current intensity. The manufacture process provided by the invention is simple, each coating of the fuse is combined compactly, and the fuse has outstanding arc extinction performance and higher stability. The surface- mounted fuse in the structure not only has high reliable fusing property, but also has the characteristics of low resistance and low power consumption, therefore the energy consumption in the circuit can be reduced, energy sources are saved, and the fuse can be widely used in the circuit protection of mini portable electronic products.
Description
Technical field
The present invention relates to a kind of fuse and manufacture craft thereof of built-in thermal insulation layer, more particularly, the present invention relates to a kind of monolithic type fuse of surface attaching type of built-in thermal insulation layer, this fuse belongs to circuit brake, is used for the overcurrent protection of electrical equipment.
Background technology
Fuse is a kind of device that generally is used for the circuit overcurrent protection.Fuse is installed in the circuit, during the circuit operate as normal, only is equivalent to a lead, conducting electric current that can be for a long time stable; When current fluctuation taking place, also should be able to bear the overload of certain limit owing to power supply or external disturbance; The operation of assurance circuit safety.Have only when circuit breaks down or be unusual, be accompanied by electric current and constantly raise, the electric current of rising might damage other devices in the circuit, and in the time of also might burning electrical equipment even cause fire, fuse will cut off electric current, thereby plays the effect of protection electrical equipment.
Adopt wire, sheet metal or metal film as fuse element in the fuse of many overcurrent protections, these metal materials mainly are made up of copper, aluminium or silver etc.Can flow through these conductors and the maximum possible current strength of its fusing is determined by the geometry and the cross section of conductor; when the electric current of the fuse element of flowing through surpasses the value of regulation; the heat that electric current produces will melt fuse element; cut off the influence that the downstream electronic assembly is subjected to overload current, thus the protection electronic building brick.
Heat balance equation inner in the fuse course of work is expressed:
Q＝I
2Rt
Wherein Q is a caloric value, and I is an electric current, and R is a resistance, and t is the time.The fuse of specific protective current has certain regulation to electric current I and fusing time t.The fusing heat Qr that needs equals caloric value and deducts heat dissipation capacity.
The Qr=Q-heat dissipation capacity
The fusing heat Qr that needs is determined by the rerum natura of material.When heat dissipation capacity is big more, caloric value Q also wants corresponding increase, just can keep enough fusing heat Qr.When Q was big more, resistance R was just big more.The fuse that resistance is bigger can consume bigger electric energy in circuit.In adopting battery powered electrical equipment, use the bigger fuse of resistance also can make battery minimizing service time.Therefore scattering and disappearing of heat need be reduced by the thermal conductivity that reduces material, thereby the resistance of fuse can be reduced accordingly.
Its preparation method of fuse of having introduced lower thermal conductivity in the at present relevant patent has two kinds, first kind is to adopt the pottery of high-alumina ratio to make substrate to add the intermediate layer between itself and conductor, the intermediate layer is generally vitreum, its structure is roughly the fusing fuse structure of mentioning in prestige rising sun BC element Bei Shila leather company state's application for a patent for invention therein 200580029173.5, its carrier substrates is the aluminium oxide ceramics of high heat conductance, arranged the intermediate layer with lower thermal conductivity between carrier substrates and fusible metal conductor, wherein the intermediate layer is formed or is formed by the organic intermediate layer that applies with island formula printing by the low melting point unorganic glass paste that applies with method for printing screen.JP08/102244A has introduced and adopted the glass glaze layer of lower thermal conductivity is the intermediate layer, and the used material in intermediate layer is lead silicate glass (PbOZnOB
2O
3SiO
2).This kind preparation method shortcoming mainly is that the unorganic glass that adopts wants obviously high as its thermal conductivity of thermal insulation layer than high molecular polymer, and heat-insulating property is relatively poor relatively.Second kind of preparation method is that to adopt the low substrate of alumina content of lower thermal conductivity be substrate, safety fuse and cover layer that JP2003/173728A has described metallic conductor are arranged on the substrate, substrate has lower thermal conductivity, therefore scattering and disappearing of the heat that the minimizing electric current causes help the fusing of electric conductor.DE69512519T2 discloses surface-pasted safeties, and wherein thin layer fusing conductor arrangement is on substrate and substrate preferably FR-4 epoxides and polyamide.The shortcoming of this preparation method mainly is that cost is higher, and heat resisting temperature is lower, and arc extinction performance is not high.
Summary of the invention
Technical problem to be solved by this invention is to overcome the deficiencies in the prior art, and a kind of fuse of improved built-in thermal insulation layer is provided, and its resistance is little, dispels the heat little and cost is lower, and preparation technology is simple.
The present invention also provides a kind of manufacture craft of fuse, and its technology is simple, and combination is tight between each layer of gained fuse, arc extinction performance, resistance to elevated temperatures and good stability.
For solving above technical problem, a kind of technical scheme that the present invention takes is: a kind of fuse, comprise glass-ceramic substrate, be embedded in fusible metal conductor in the glass-ceramic substrate, be arranged on the thermal insulation layer on the one side at least of fusible metal conductor and be arranged on termination electrode on the described glass-ceramic substrate, described thermal insulation layer is made by the porous ceramic glass composite material, and this porous ceramic glass composite material prepares as follows:
A, to carry out wet grinding to granule size be 0.1～10 μ m by weight 1.5～9: 1 with glass powder with low melting point with the porous ceramic powder, oven dry sieve mixed powder; Described porous ceramic powder porosity is 40%～90%, and thermal conductivity is 0.1W/m*K～0.002W/m*K; Described glass powder with low melting point is that fusing point is at the glass dust below 600 ℃;
B, step a gained mixed powder is put into Muffle furnace, in 500 ℃～800 ℃ following pre-burnings 8～16 hours;
C, to the mixed powder through step b carry out wet grinding to granularity smaller or equal to 5 μ m, oven dry is sieved and is promptly got the porous ceramic glass composite material.
According to the present invention, described glass-ceramic substrate is known, is mainly fine and close aluminium oxide ceramics, and its thermal conductivity is between 1.3W/m*K～3.5W/m*K.The porosity of porous ceramic glass composite material of the present invention is between 50%～80%, and thermal conductivity is smaller or equal to 1W/m*K.
Among the present invention, glass powder with low melting point is meant that fusing point is at the glass dust below 600 ℃, include but not limited to sodium monoxide, calcium oxide, silicon dioxide, bismuth oxide, magnesian one or more mixture, representational glass dust has for example soda-lime glass powder, silicate glass powder.
Among the present invention, the porous ceramic powder can be one or more the mixture in aluminium oxide, diboron trioxide, silicon dioxide, zinc oxide, the barium monoxide, and representational porous ceramic powder has for example superfine silica gel powder.Described porous ceramic powder porosity is between 40%～90%, and thermal conductivity is between 0.002W/m*K～0.1W/m*K.
According to a preferred version of the present invention, the porous ceramic glass composite material is made up of superfine silica gel powder and soda-lime glass powder, and the two proportioning is 6: 4, and 8: 2 or 9: 1, preferred 9: 1.
According to another preferred version of the present invention, the porous ceramic glass composite material is made up of superfine silica gel powder and silicate glass powder, and the two proportioning is 6: 4, and 8: 2 or 9: 1, preferred 9: 1.
Fuse concrete aspect according to the present invention, fusible metal conductor top and below be equipped with thermal insulation layer.
The another technical scheme that the present invention takes is: a kind of manufacture craft of fuse comprises (1), obtains the living embryo of fuse by the forming process of successively adding; (2), fuse is given birth to embryo and carry out binder removal and sintering processes successively; (3), the link electrode obtains fuse, wherein, the detailed process of step (1) is: make the glass ceramics coating that has binding agent respectively, have the slurry of fusible metal powder of binding agent and the slurry that has the porous ceramic glass composite material of binding agent, arranging according to each layer of fuse then, form ceramic matrix layer (1) by coating sizing-agent and cure pastes, form fusible metal conductor (2) and thermal insulation layer (3) by screen printing mode printing and cure pastes, the final glass-ceramic substrate (1) that obtains, the assembly of fusible metal conductor (2) and thermal insulation layer (3) is fuse and gives birth to embryo, described binding agent is the binding agent of UV curable, but the solvent-borne type binding agent of dry solidification or the combination of the two, the binding agent that different types of slurry adopted is identical or different.
Preferably, in the above-mentioned manufacture craft, the binding agent that is adopted is the binding agent of UV curable, and the slurry that has the binding agent of this UV curable can be realized solidifying by ultraviolet irradiation.Certainly, also can use solvent type binding agent, wherein solvent comprises organic solvent and the water of knowing in the industry, solidifies this moment to realize by dry.
In the step of above-mentioned manufacture craft (2), described binder removal detailed process is: assembly is positioned in the binder removal stove, is warmed up to 300 ℃～450 ℃, be incubated 1～5 hour; Described sintering is 600 ℃～1100 ℃ of temperature, carries out under preferred 600 ℃～900 ℃.
A concrete aspect according to above-mentioned manufacture craft, only on the one side of fusible metal conductor, be provided with thermal insulation layer, then 1. step can carry out as follows: at first be coated with the glass-ceramic layer that one deck has the binding agent of available ultraviolet light polymerization, this coating of ultra-violet curing forms first glass-ceramic substrate; Have the metal dust slurry of the binding agent of available ultraviolet light polymerization then on first glass-ceramic substrate by screen printing mode printing one deck, the described metal dust slurry of ultra-violet curing forms the fusible metal conductor; The slurry of porous ceramic glass composite material that will have a binding agent of available ultraviolet light polymerization by screen printing mode is printed on the fusible metal conductor again, and this layer of ultra-violet curing slurry obtains described thermal insulation layer; On described thermal insulation layer, be coated with the glass-ceramic layer that one deck has the binding agent of available ultraviolet light polymerization at last, this glass-ceramic layer of ultra-violet curing forms second glass-ceramic substrate, and described first glass-ceramic substrate and described second glass-ceramic substrate constitute glass-ceramic substrate jointly.
Another concrete aspect according to above-mentioned manufacture craft: on the fusible metal conductor and below be equipped with thermal insulation layer, then step (1) can be carried out as follows: at first be coated with the glass-ceramic layer that one deck has the binding agent of available ultraviolet light polymerization, this coating of ultra-violet curing forms first glass-ceramic substrate; The slurry of porous ceramic glass composite material that on first glass-ceramic substrate, has the binding agent of available ultraviolet light polymerization then by screen printing mode printing one deck, this slurry of ultra-violet curing forms thermal insulation layer, then at this metal dust slurry that has the binding agent of available ultraviolet light polymerization above thermal insulation layer by screen printing mode printing one deck, the described metal dust slurry of ultra-violet curing forms the fusible metal conductor; At this slurry of porous ceramic glass composite material that has the binding agent of available ultraviolet light polymerization above fusible metal conductor by screen printing mode printing one deck, this slurry of ultra-violet curing forms another thermal insulation layer again; At last, coating one deck has the glass ceramic coating of available ultraviolet light polymerization above the thermal insulation layer up, and this coating of ultra-violet curing forms second glass-ceramic substrate, the described ceramic matrix of the common formation of described first glass-ceramic substrate and second glass-ceramic substrate.
In addition, the another scheme of the manufacture craft of fuse of the present invention is: at first adopt the dry method lamination process of knowing in the industry to obtain fuse and give birth to embryo; Then the living embryo of fuse is carried out binder removal and sintering processes successively and obtain fuse.The dry method lamination process is about to conductive electrode and thermal insulation layer printing or is coated on drying or the glass ceramics of curing is given birth on the embryo sheet, and then electrode and thermal insulation layer will be arranged and do not have electrode and the livings embryo sheet of thermal insulation layer by certain combination, pass through hot-forming.
Because the employing of technique scheme, the present invention compared with prior art has the following advantages:
1, adopt porous ceramic glass composite material of the present invention as thermal insulation layer, can reduce the ceramic matrix of fuse and the heat conduction between the metallic conductor greatly, the resistance of the metallic conductor under can reduction respective electrical intensity of flow by a relatively large margin, thus heat radiation effectively reduced.
2, manufacture craft of the present invention is simple, cost is low, and adopt low temperature co-fired mode, can guarantee to be embedded in combine closely between the metallic conductor of ceramic matrix inside and thermal insulation layer and the matrix and the three between no obvious diffusion phenomena exist, thereby fuse has splendid arc extinction performance, has high temperature resistant and high stability simultaneously.
Description of drawings
Fig. 1 is the structural representation of the fuse of embodiment 1;
Fig. 2 is the structural representation of the fuse of embodiment 2;
Wherein: 1, glass-ceramic substrate; 10, first glass-ceramic substrate; 11, second glass-ceramic substrate; 2, fusible metal conductor; 3,3 ', 3 ", thermal insulation layer.
Embodiment
In following examples, insulating layer material adopts is that (main component is SiO for the superfine silica gel powder of 90wt%
2, thermal conductivity is 0.0023W/m*K) and the porous ceramic glass composite material of 10% glass dust preparation.Wherein, glass dust can be soda-lime glass (main component SiO
2+ 15%Na
2O+16%CaO, thermal conductivity is 0.81～0.93W/m*K), silicate glass (main component: SiO
2+ B
2O
3, thermal conductivity is 1W/m*K).
The main component of glass-ceramic substrate is Al
2O
3+ B
2O
3+ Na
2O, thermal conductivity is 1.3～3.5W/m*K.
The present invention will be further described in detail below in conjunction with specific embodiment.
As shown in Figure 1, fuse comprises glass-ceramic substrate 1, be embedded in fusible metal conductor 2 in the glass-ceramic substrate 1, be arranged on thermal insulation layer 3 and termination electrode (not shown) on the one side of fusible metal conductor 2, and wherein the material that adopts of thermal insulation layer 3 is the porous ceramic glass composite material.
The preparation method of porous ceramic glass composite material is as follows:
A, with superfine silica gel powder and glass powder with low melting point (fusing point is lower than 600 ℃) by weight 9: 1, carrying out wet grinding to granule size together is 2～3 μ m, oven dry evenly sieve mixed powder;
B, mixed powder is put into Muffle furnace, under 500 ℃～800 ℃, pre-burning 8～16 hours;
C, to mixed powder carry out wet grinding to granularity smaller or equal to 5 μ m promptly.
The manufacture craft of above-mentioned fuse comprises the steps:
(1), obtain fuse by the forming process of successively adding and give birth to embryo: at first be coated with the glass-ceramic layer of the binding agent that has available ultraviolet light polymerization of one deck certain thickness (being generally 16mil), this coating of ultra-violet curing forms first glass-ceramic substrate 10; Have the metal dust slurry of the binding agent of available ultraviolet light polymerization then on first glass-ceramic substrate 10 by screen printing mode printing one deck, this metal dust slurry of ultra-violet curing forms fusible metal conductor 2; The slurry of porous ceramic glass composite material that will have a binding agent of available ultraviolet light polymerization by screen printing mode is printed on the fusible metal conductor 2 again, and this layer of ultra-violet curing slurry obtains described thermal insulation layer 3; The last certain thickness glass-ceramic layer that has the binding agent of available ultraviolet light polymerization of one deck that above this thermal insulation layer 3, is coated with, this glass-ceramic layer of ultra-violet curing forms second glass-ceramic substrate 11, described first glass-ceramic substrate 10 and second glass-ceramic substrate, 11 common formation glass-ceramic substrates 1.By aforesaid operations, obtained the assembly of glass-ceramic substrate 1, fusible metal conductor 2 and thermal insulation layer 3.Wherein, it all is known that the coating formation of glass-ceramic layer and the silk screen printing of fusible metal conductor form, and for example can not describe in detail at this referring to the open CN101620954A of Chinese invention patent.The porous ceramic glass composite material is made into the slurry that satisfies the silk screen printing condition and also can takes routine techniques to carry out, but the open US 6602766 of reference example such as U.S.'s patent of invention will not describe in detail at this.
(2), assembly is carried out binder removal to remove binding agent composition wherein, specifically be that assembly is positioned in the binder removal stove, be warmed up to 300～450 ℃, be incubated 1～5 hour.
(3), the assembly behind the binder removal is placed 600 ℃～900 ℃ following densified sintering products of temperature, sintering time 60～180min.
(4), will the assembly behind the sintering connect the silver layer termination electrode through after the chamfering, and electroless nickel layer and tin layer promptly get fuse on silver layer.
Fuse to present embodiment carries out fusing time and reliability testing, and the result sees Table 1-1 and table 1-2 respectively.
The test data of fusing time under the identical overload current condition of table 1-1
Table 1-2 reliability testing data
Table 1-1 is the test data of fusing time under identical overload current and the same melt resistance condition, the fuse that adds thermal insulation layer above the metallic conductor its under identical overload current condition, the calorific requirement Q2 of institute is not only for adding 21.3%～35.4% of the thermal insulation layer sample fuse calorific requirement Q1 of institute, promptly under identical blowout current and identical time conditions, its theoretical resistance of fuse that adds thermal insulation layer only is 21.3%～35.4% of the resistive fuse value that do not add thermal insulation layer.Table 1-2 is the reliability testing data of the fuse of present embodiment, and as seen, under different test conditions, the resistance change of fuse is all very little from this table.
In addition, the porous ceramic glass composite material as insulating layer material still is a kind of splendid arc quenching material.This arc quenching material owing to the existence of a large amount of holes, can absorb the metallic vapour that fuse fusing/evaporation is produced in the fuse blows process, and cuts off the electric current by electric arc, extinguish arcs in the short period of time.
As shown in Figure 2, fuse comprises glass-ceramic substrate 1, be embedded in fusible metal conductor 2 in the glass-ceramic substrate 1, be arranged on the thermal insulation layer 3 ' on the top and bottom of fusible metal conductor 2; 3 " and termination electrode (not shown), wherein thermal insulation layer 3 ', 3 " material that adopts is the porous ceramic glass composite material.The porous ceramic glass composite material is with embodiment 1.
Manufacture craft according to the fuse of present embodiment comprises the steps:
(1), obtain fuse by the forming process of successively adding and give birth to embryo: at first be coated with the glass-ceramic layer that one deck has the binding agent of available ultraviolet light polymerization, this coating of ultra-violet curing forms first glass-ceramic substrate 10; The slurry of porous ceramic glass composite material that on first glass-ceramic substrate 10, has the binding agent of available ultraviolet light polymerization then by screen printing mode printing one deck, this slurry of ultra-violet curing forms thermal insulation layer 3 ', then have the metal dust slurry of the binding agent of available ultraviolet light polymerization by screen printing mode printing one deck in this thermal insulation layer 3 ' top, the described metal dust slurry of ultra-violet curing forms fusible metal conductor 2; At this slurry of porous ceramic glass composite material that has the binding agent of available ultraviolet light polymerization above fusible metal conductor 2 by screen printing mode printing one deck, this slurry of ultra-violet curing forms another thermal insulation layer 3 again "; At last, thermal insulation layer 3 up " coating one deck in top has the glass ceramic coating of available ultraviolet light polymerization; and this coating of ultra-violet curing forms second glass-ceramic substrate 11, and described first glass-ceramic substrate 10 and second glass-ceramic substrate 11 be common to constitute described ceramic matrix 1.Wherein, it all is known that the coating formation of glass-ceramic layer and the silk screen printing of fusible metal conductor form, and does not describe in detail at this.The porous ceramic glass composite material is made into the slurry that satisfies the silk screen printing condition and also can takes routine techniques to carry out, but the open US6602766 of reference example such as U.S.'s patent of invention will not describe in detail at this.
(2), assembly is carried out binder removal to remove binding agent composition wherein, specifically be that assembly is positioned in the binder removal stove, be warmed up to 300～450 ℃, be incubated 1～5 hour.
(3), the assembly behind the binder removal is placed 600 ℃～900 ℃ following densified sintering products of temperature, sintering time 60～180min.
(4), will the assembly behind the sintering connect the silver layer termination electrode through after the chamfering, and electroless nickel layer and tin layer promptly get fuse on silver layer.
Fuse to present embodiment has carried out fusing time and reliability testing, and the result sees Table 2-1 and table 2-2 respectively.
Fusing time test data under the identical overload current condition of table 2-1
Table 2-2 reliability testing data
Table 2-1 is the test data of fusing time under identical overload current and the same melt resistance condition, on the data as can be seen, under identical overload current condition, the calorific requirement Q3 of fuse institute of present embodiment is not only for adding 1.1%～2.0% of the thermal insulation layer sample fuse calorific requirement Q1 of institute, promptly under identical blowout current and identical time conditions, its theoretical resistance of fuse that adds thermal insulation layer only is 1.1%～2.0% of the resistive fuse value that do not add thermal insulation layer.Therefore it is better to add the fuse heat insulating effect of thermal insulation layer up and down at metallic conductor.
Table 2-2 is for adding the reliability testing data of the fuse of thermal insulation layer up and down at metallic conductor, under different test conditions, the resistance change of fuse is all very little.
According to the fuse of present embodiment, structure and manufacture craft are with embodiment 1, and difference is: the porous ceramic glass composite material that forms thermal insulation layer 3 prepares by the following method:
A, cenosphere (is mainly B
2O
3And Al
2O
3) be 2～3 μ m with glass powder with low melting point (fusing point is lower than 600 ℃) by weight carrying out wet grinding to granule size at 9: 1, oven dry evenly sieve mixed powder;
B, mixed powder is put into Muffle furnace, in 500 ℃～800 ℃, down, pre-burning 8～16 hours;
C, to mixed powder carry out wet grinding to granularity smaller or equal to 5 μ m promptly.
Fuse to present embodiment carries out fusing time and reliability testing, and the result sees Table 3-1 and table 3-2 respectively.
The test data of fusing time under the identical overload current condition of table 3-1
Table 3-2 reliability testing data
Table 3-1 is the test data of fusing time under identical overload current and the same melt resistance condition.Under identical overload current condition, the calorific requirement Q2 of fuse institute of present embodiment is not only for adding 52.3%～63.6% of the thermal insulation layer sample fuse calorific requirement Q1 of institute, promptly under identical blowout current and identical time conditions, its theoretical resistance of fuse that adds thermal insulation layer only is 52.3%～63.6% of the resistive fuse value that do not add thermal insulation layer.
Table 3-2 is the reliability testing data of the fuse of present embodiment, and under different test conditions, the resistance change of fuse is all very little.
To sum up, the present invention takes the ultra-violet curing forming technique, through the UV curing molding, the low temperature co-fired fuse that produces, the constituent material of fuse has only pottery and metal, without any epoxy resin or other polymeric material, is a kind of monolithic type fuse of surface attaching type.This resistive fuse is little, and it is little to dispel the heat, and uses this fuse, can effectively protect electronic building brick.
The foregoing description only is explanation technical conceive of the present invention and characteristics; its purpose is to allow the personage who is familiar with this technology can understand content of the present invention and enforcement according to this; can not limit protection scope of the present invention with this; all equivalences that spirit is done according to the present invention change or modify, and all should be encompassed within protection scope of the present invention.
Claims (12)
1. fuse, it comprises glass-ceramic substrate (1), be embedded in fusible metal conductor (2) in the described glass-ceramic substrate (1), be arranged on the thermal insulation layer (3 on the one side at least of described fusible metal conductor (2), 3 '; 3 ") and be arranged on termination electrode on the described glass-ceramic substrate (1), it is characterized in that: described thermal insulation layer (3,3 '; 3 ") make smaller or equal to the porous ceramic glass composite material of 1W/m*K by thermal conductivity, described porous ceramic glass composite material prepares as follows:
A, to carry out wet grinding to granule size be 0.1～10 μ m by weight 1.5～9: 1 with glass powder with low melting point with the porous ceramic powder, the oven dry sieve mixed powder, the porosity of wherein said porous ceramic powder is 40%～90%, thermal conductivity is 0.002W/m*K～0.1W/m*K, and described glass powder with low melting point is that fusing point is at the glass dust below 600 ℃;
B, step a gained mixed powder is put into Muffle furnace, in 500 ℃～800 ℃ following pre-burnings 8～16 hours;
C, to the mixed powder through step b carry out wet grinding to granularity smaller or equal to 5 μ m, oven dry is sieved and is promptly got described porous ceramic glass composite material.
2. fuse according to claim 1 is characterized in that: be equipped with described thermal insulation layer (3 ', 3 ") at the upper and lower surface of described fusible metal conductor (2).
3. fuse according to claim 1 is characterized in that: described porous ceramic powder is one or more the mixture that is selected from aluminium oxide, diboron trioxide, silicon dioxide, zinc oxide, the barium monoxide.
4. fuse according to claim 3 is characterized in that: described porous ceramic powder is a superfine silica gel powder.
5. according to claim 1 or 4 described fuses, it is characterized in that: described glass powder with low melting point is to be selected from sodium monoxide, calcium oxide, silicon dioxide, bismuth oxide, magnesian one or more mixture.
6. fuse according to claim 5 is characterized in that: described glass powder with low melting point is soda-lime glass powder or silicate glass powder.
7. fuse according to claim 1 is characterized in that: among the step a, it is 2～3 μ m that the porous ceramic powder is carried out wet grinding to granule size with glass powder with low melting point by weight 1.5～9: 1.
8. the manufacture craft of the described fuse of claim 1 comprises (1), obtains the living embryo of fuse by the forming process of successively adding; (2), fuse is given birth to embryo and carry out binder removal and sintering processes successively; (3), the link electrode obtains fuse, it is characterized in that: the detailed process of step (1) is: make the glass ceramics coating that has binding agent respectively, have the slurry of fusible metal powder of binding agent and the slurry that has the porous ceramic glass composite material of binding agent, arranging according to each layer of fuse then, form ceramic matrix layer (1) by coating sizing-agent and cure pastes, form fusible metal conductor (2) and thermal insulation layer (3) by screen printing mode printing and cure pastes, the final glass-ceramic substrate (1) that obtains, the assembly of fusible metal conductor (2) and thermal insulation layer (3) is fuse and gives birth to embryo, described binding agent is the binding agent of UV curable, but the solvent-borne type binding agent of dry solidification or the combination of the two, the binding agent that different types of slurry adopted is identical or different.
9. the manufacture craft of fuse according to claim 8, it is characterized in that: described binding agent is the binding agent of UV curable, the slurry that has the binding agent of this UV curable is realized solidifying by ultraviolet irradiation.
10. the manufacture craft of fuse according to claim 9, it is characterized in that: in the step (2), described binder removal detailed process is: assembly is positioned in the binder removal stove, is warmed up to 300 ℃～450 ℃, be incubated 1～5 hour; Described sintering carries out under 600 ℃～1100 ℃ of temperature.
11. the manufacture craft of fuse according to claim 10 is characterized in that: in the step (3), with assembly at 600 ℃～900 ℃ following sintering of temperature.
12. the manufacture craft of the described fuse of claim 1 is characterized in that: at first obtain fuse and give birth to embryo by the dry method lamination process; Then the living embryo of fuse is carried out binder removal and sintering processes successively and obtain fuse.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102991852A CN102013368B (en) | 2010-10-08 | 2010-10-08 | Fuse with built-in thermal-protective coating and manufacture process thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102991852A CN102013368B (en) | 2010-10-08 | 2010-10-08 | Fuse with built-in thermal-protective coating and manufacture process thereof |
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| CN102013368B CN102013368B (en) | 2012-11-21 |
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| CN102623273A (en) * | 2012-04-13 | 2012-08-01 | 苏州晶讯科技股份有限公司 | Miniature fuse |
| CN102800541A (en) * | 2012-08-06 | 2012-11-28 | 南京萨特科技发展有限公司 | Low-temperature co-fired ceramic stacking protective element and manufacturing method thereof |
| CN102891051A (en) * | 2011-07-22 | 2013-01-23 | 庄嘉明 | Side-by-side fuse component and battery array with same |
| CN103400730A (en) * | 2013-08-02 | 2013-11-20 | 东莞市贝特电子科技股份有限公司 | Protection device with over-temperature and over-current double-layer protection function |
| CN104201063A (en) * | 2012-03-13 | 2014-12-10 | 苏州晶讯科技股份有限公司 | Manufacturing process of fuse for electronic product |
| CN104201063B (en) * | 2012-03-13 | 2017-01-04 | 苏州晶讯科技股份有限公司 | The manufacturing process of use for electronic products fuse |
| CN106783449A (en) * | 2016-11-29 | 2017-05-31 | 苏州达方电子有限公司 | Surface-adhered fuse and its manufacture method with compacting arc structure |
| WO2020078313A1 (en) * | 2018-10-19 | 2020-04-23 | Aem科技(苏州)股份有限公司 | Fuse and production method therefor |
| CN112266272A (en) * | 2020-10-29 | 2021-01-26 | 苏州晶讯科技股份有限公司 | Surface-mounted fuse based on low-temperature co-fired ceramic technology and preparation method thereof |
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| CN102891051A (en) * | 2011-07-22 | 2013-01-23 | 庄嘉明 | Side-by-side fuse component and battery array with same |
| CN102891051B (en) * | 2011-07-22 | 2017-04-12 | 阿提瓦公司 | Side-by-side fuse component and battery array with same |
| CN104201063B (en) * | 2012-03-13 | 2017-01-04 | 苏州晶讯科技股份有限公司 | The manufacturing process of use for electronic products fuse |
| CN102610449B (en) * | 2012-03-13 | 2014-08-06 | 苏州晶讯科技股份有限公司 | Method for manufacturing arc extinguishing glass for miniature fuse |
| CN104201063A (en) * | 2012-03-13 | 2014-12-10 | 苏州晶讯科技股份有限公司 | Manufacturing process of fuse for electronic product |
| CN104201076A (en) * | 2012-03-13 | 2014-12-10 | 苏州晶讯科技股份有限公司 | Fuse with arc suppression function |
| CN102610449A (en) * | 2012-03-13 | 2012-07-25 | 苏州晶讯科技股份有限公司 | Method for manufacturing arc extinguishing glass for miniature fuse |
| CN104201076B (en) * | 2012-03-13 | 2016-05-18 | 苏州晶讯科技股份有限公司 | There is the fuse that suppresses electric arc function |
| CN102623273A (en) * | 2012-04-13 | 2012-08-01 | 苏州晶讯科技股份有限公司 | Miniature fuse |
| CN102623273B (en) * | 2012-04-13 | 2015-02-18 | 苏州晶讯科技股份有限公司 | Miniature fuse |
| CN102800541A (en) * | 2012-08-06 | 2012-11-28 | 南京萨特科技发展有限公司 | Low-temperature co-fired ceramic stacking protective element and manufacturing method thereof |
| CN102800541B (en) * | 2012-08-06 | 2014-12-10 | 南京萨特科技发展有限公司 | Low-temperature co-fired ceramic stacking protective element and manufacturing method thereof |
| CN103400730B (en) * | 2013-08-02 | 2016-04-06 | 东莞市贝特电子科技股份有限公司 | A kind of protective device with overtemperature and overcurrent double shielding |
| CN103400730A (en) * | 2013-08-02 | 2013-11-20 | 东莞市贝特电子科技股份有限公司 | Protection device with over-temperature and over-current double-layer protection function |
| CN106783449A (en) * | 2016-11-29 | 2017-05-31 | 苏州达方电子有限公司 | Surface-adhered fuse and its manufacture method with compacting arc structure |
| WO2020078313A1 (en) * | 2018-10-19 | 2020-04-23 | Aem科技(苏州)股份有限公司 | Fuse and production method therefor |
| US11482393B2 (en) | 2018-10-19 | 2022-10-25 | Aem Components (Suzhou) Co., Ltd. | Fuse and production method therefor |
| US11217415B2 (en) | 2019-09-25 | 2022-01-04 | Littelfuse, Inc. | High breaking capacity chip fuse |
| US11508542B2 (en) | 2019-09-25 | 2022-11-22 | Littelfuse, Inc. | High breaking capacity chip fuse |
| CN112266272A (en) * | 2020-10-29 | 2021-01-26 | 苏州晶讯科技股份有限公司 | Surface-mounted fuse based on low-temperature co-fired ceramic technology and preparation method thereof |
| CN112266272B (en) * | 2020-10-29 | 2022-04-12 | 苏州晶讯科技股份有限公司 | Surface-mounted fuse based on low-temperature co-fired ceramic technology and preparation method thereof |
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