CN104493178A - Processing method of silver zinc oxide electric contact material containing additive - Google Patents
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Abstract
The invention discloses a processing method of a silver zinc oxide electric contact material containing an additive. The preparation method comprises the following steps: calculating the amount of required metal zinc, a metal additive and silver according to a material ratio of a required to-be-prepared silver zinc oxide electric contact; smelting a part in the form of metal silver with the metal zinc and the metal additive, and atomizing to prepare silver-zinc alloy powder; mixing the other part in the form of silver nitrate with the prepared silver-zinc alloy powder, and then reacting with sodium hydroxide to obtain composite powder of silver oxide and silver-zinc alloy; washing the obtained composite powder by water until the composite powder is neutral; drying, crushing and arranging the neutral composite powder in an oxygen-containing atmosphere for oxidation to obtain silver zinc oxide composite powder containing the additive; isostatically molding and sintering the composite powder, thermally extruding and machining an obtained silver zinc oxide billet into a strip material or wire material, and then machining the strip material or wire material to obtain the silver zinc oxide electric contact material. The contact prepared by the method is more uniform in gold phase tissue and better in machinability.
Description
Technical field
The present invention relates to a kind of processing method of the silver zinc oxide electrical contact material containing additive, belong to field of metal matrix composite.
Background technology
Silver zinc oxide contact material has excellent interrupting performance, resistance fusion welding and resistance to arc erosion, but it exists the shortcomings such as contact resistance is large, temperature rise is high, has had a strong impact on the electric property of electrical equipment.
Discovery is studied through forefathers, the silver zinc oxide electrical contact material being added with one or more oxides in bismuth oxide, cupric oxide and indium oxide not only has good interrupting performance, resistance fusion welding and resistance to arc erosion, and contact resistance and the temperature rise of contact material can also be reduced, improve the electric property of electrical equipment well.As a rule, the preparation technology containing the silver zinc oxide electrical contact of additive mainly contains two kinds: powder mixing method and internal oxidation.Powder mixing method by mechanical mixture mode, silver powder, oxide powder and zinc and additive powder is mixed, and then mixed powder carried out a series of processing such as isostatic pressed, sintering, extruding, finally obtains the silver zinc oxide electrical contact containing additive.This method preparation technology is simple, the process-cycle is short, but easily occurs the problem that additive is assembled.Internal oxidation refers to the silver-colored kirsite containing Addition ofelements is obtained the Ag-ZnO material containing additive by oxidation, then carries out a series of processing such as isostatic pressed, sintering, extruding, finally obtains the silver zinc oxide electrical contact containing additive.The deficiency of this kind of method easily in material structure, occurs poor oxide region, affects the electrical property of material.
The CN103710608A patent of invention of applying for before the applicant, disclose a kind of preparation method containing additive silver zinc oxide electrical contact material, first the method is joined in silver powder or oxide powder and zinc by the salt compounds solution containing Addition ofelements to make slurry, dried, broken, sieve after mix with oxide powder and zinc or silver powder, obtain Ag-ZnO mixed powder, afterwards it is processed into electrical contact through isostatic pressed, sintering, extruding etc.The method improves the phenomenon of traditional blending processes of powders additive segregation preferably, makes additive be no longer simple mechanical mixture, but is combined together with matrix well by coated, makes the Ag-ZnO material of gained have more outstanding performance.But composite mortar likely can cause the precipitation of Addition ofelements on silver matrix to produce the phenomenon of segregation in drying course because the speed that evaporates is uneven, in addition, silver powder containing additive (or the oxide powder and zinc containing additive) is comparatively large with the density difference of oxide powder and zinc (or silver powder), and two kinds of powders also there will be zinc oxide and to unite the phenomenon of assembling in mixed process.
Summary of the invention
The technical problem to be solved in the present invention is to provide the processing method of the silver zinc oxide electrical contact material containing additive that a kind of technique is simple, additive is evenly distributed in matrix material, silver zinc oxide electrical contact metallographic structure obtained by this method evenly, there is excellent processing characteristics.
The processing method of the silver zinc oxide electrical contact material containing additive of the present invention, is characterized in that comprising the following steps:
1) calculate according to the material mixture ratio of the silver zinc oxide electrical contact of required preparation needed for the consumption of metallic zinc, metallic additions and silver, required silver is divided into two parts, a part is together placed in mid-frequency melting furnace with the form of argent and metallic zinc and metallic additions and is smelted into uniform alloy molten solution, then makes silver-colored Zinc alloy powder through being atomized; Another part takes for subsequent use with the form of silver nitrate, and generates the consumption of the NaOH needed for silver oxide according to the Dosage calculation silver nitrate of silver nitrate and NaOH reaction, takes for subsequent use; Get silver nitrate is made into 20 ~ 40w/w% liquor argenti nitratis ophthalmicus by water-soluble solution, silver-colored Zinc alloy powder and liquor argenti nitratis ophthalmicus are placed in reactor, stir, obtain the suspension of silver nitrate and silver-colored Zinc alloy powder; Described metallic additions is one or more the combination be selected from bismuth, copper and indium;
2) get NaOH is made into 10 ~ 30w/w% sodium hydroxide solution by water-soluble solution, join step 1) stirring reaction in the suspension of gained, there is precipitation to generate, filter, obtain the composite powder of silver oxide and silver-colored kirsite;
3) composite powder of the silver oxide of gained and silver-colored kirsite is washed to neutrality, dry, pulverizing is placed in oxygen-containing atmosphere and is oxidized, and then pulverizes, and obtains the Ag-ZnO composite powder containing additive;
4) by gained containing the Ag-ZnO composite powder isostatic compaction of additive, and then be placed in oxygen-containing atmosphere and sinter, obtain the Ag-ZnO billet containing additive;
5) gained Ag-ZnO billet through hot extrusion be processed into band or wire rod, after through Rolling compund or drawing, then through punch process or rivet driver processing, namely obtain sheet or the rivet type silver zinc oxide electrical contact material containing additive.
Required silver is divided into two parts by the present invention, and a part is together placed in mid-frequency melting furnace with the form of argent and metallic zinc and metallic additions and is smelted into uniform alloy molten solution, then through silver-colored Zinc alloy powder that atomization is made containing additive; Another part silver is obtained by reacting the composite powder of silver oxide and silver-colored kirsite again with NaOH after mixing with the obtained silver-colored Zinc alloy powder containing additive with the form of silver nitrate, because the density of silver-colored Zinc alloy powder (is about 8.5 ~ 9.6g/cm
3) and react the silver oxide (7.143g/cm generated
3) density relatively, thus silver oxide and silver-colored Zinc alloy powder can be made to be mixed to get evenly, silver oxide particle is made more to be evenly distributed in silver-colored Zinc alloy powder, effectively improve oxide powder and zinc in prior art to unite the phenomenon of assembling, thus make gained silver zinc oxide electrical contact material have uniform metallographic structure; On the other hand, the oxygen that silver-colored Zinc alloy powder is produced by silver oxide decomposes in oxidizing process and silver-colored kirsite generation reaction in-situ, decrease the diffusion of Zn-ef ficiency to particle top layer, accelerate the oxidation of silver-colored Zinc alloy powder; Simultaneously, because silver-colored zinc alloy granules plays the effect of reacting intermediary in the course of reaction of silver nitrate and NaOH, make to react the surface that a part of silver oxide generated can cover silver-colored zinc alloy granules, improve the adhesion between second-phase (i.e. zinc oxide phase), avoid the direct contact between the brittlement phase (i.e. zinc oxide phase) that exists in prior art, thus make contact material have better processing characteristics.
The step 1 of said method) in, in the silver zinc oxide electrical contact material of described needs preparation, zinc oxide content is 8 ~ 18wt%, and the content of metallic additions is 0.1 ~ 2.5wt%, and surplus is silver; The preferred zinc oxide content that is chosen as is 10 ~ 12wt%, and the content of metallic additions is 0.5 ~ 1wt%, and surplus is silver.In this step, preferably silver nitrate is mixed with the liquor argenti nitratis ophthalmicus of 30 ~ 40w/w%, is more preferably the liquor argenti nitratis ophthalmicus being mixed with 30 ~ 35w/w%, the metallographic structure of gained electrical contact material can be made so more even.In this step, the consumption of NaOH is generally 4/17 ~ 5/17 of silver nitrate consumption, is more preferably 4.4/17.When metallic additions is the two or more combination in bismuth, copper and indium, when meeting the total addition of metallic additions and accounting within the scope of 0.1 ~ 2.5wt% of silver zinc oxide electrical contact material gross mass, the proportioning between them can be any proportioning.
The step 1 of said method) in, be describedly together placed in argent form and metallic zinc and metallic additions the ratio that the argent of melting in mid-frequency melting furnace accounts for the total consumption of silver and be generally 10 ~ 80wt%.
The step 2 of said method) in, the speed that adds of described sodium hydroxide solution is preferably 0.1 ~ 1L/min; The concentration of described sodium hydroxide solution is preferably 15 ~ 25w/w%, and the metallographic structure of gained electrical contact material can be made so more even.In this step, stirring reaction carries out usually under normal temperature condition, and the time of stirring reaction is generally 0.3 ~ 1h.
The step 3 of said method) in, operation that is dry and that pulverize is same as the prior art, and in the application, preferably drying is until dry the composite powder of silver oxide and silver-colored kirsite under 100 ~ 150 DEG C of conditions, usually needs the time of 12 ~ 18h; Normally the composite powder pulverizing of dried silver oxide and silver-colored kirsite is crossed 100 ~ 200 eye mesh screens afterwards, extracting screen underflow enters next process.Described oxidation preferably oxygen pressure be 0.1 ~ 1.0MPa, temperature carries out under being 400 ~ 800 DEG C of conditions, the time of oxidation is 6 ~ 12h.
The step 4 of said method) in, described isostatic compaction is identical with existing routine operation with sintering operation, and particularly, the briquetting pressure of isostatic compaction is generally 100 ~ 150MPa; Normally the pressed compact after isostatic compaction is placed in oxygen-containing atmosphere and under 880 ~ 920 DEG C of temperature conditions, sinters 4 ~ 8h, to obtain Ag-ZnO billet.
The step 5 of said method) in, the operation such as described hot extrusion is all identical with existing routine operation, and particularly, the temperature of hot extrusion is generally 750 ~ 900 DEG C, and extrusion ratio is 10 ~ 200.When band is processed in the hot extrusion of Ag-ZnO billet, gained band through repeatedly Rolling compund, to be annealed to after required size through punch ram, obtain the silver zinc oxide electrical contact material containing additive of sheet.When wire rod is processed in the hot extrusion of Ag-ZnO billet, gained wire rod through repeatedly drawing, to be annealed to after required size through rivet driver processing, obtain the silver zinc oxide electrical contact material containing additive of rivet type.
Compared with prior art, feature of the present invention is:
1, required silver is divided into two parts by the present invention, and a part is together placed in mid-frequency melting furnace with the form of argent and metallic zinc and metallic additions and is smelted into uniform alloy molten solution, then through silver-colored Zinc alloy powder that atomization is made containing additive; Another part silver is obtained by reacting the composite powder of silver oxide and silver-colored kirsite again with NaOH after mixing with the obtained silver-colored Zinc alloy powder containing additive with the form of silver nitrate, because the density of silver-colored Zinc alloy powder (is about 8.5 ~ 9.6g/cm
3) and react the silver oxide (7.143g/cm generated
3) density relatively, thus silver oxide and silver-colored Zinc alloy powder can be made to be mixed to get evenly, silver oxide particle is made more to be evenly distributed in silver-colored Zinc alloy powder, effectively improve oxide powder and zinc in prior art to unite the phenomenon of assembling, thus make gained silver zinc oxide electrical contact material have uniform metallographic structure; On the other hand, the oxygen that silver-colored Zinc alloy powder is produced by silver oxide decomposes in oxidizing process and silver-colored kirsite generation reaction in-situ, decrease the diffusion of Zn-ef ficiency to particle top layer, accelerate the oxidation of silver-colored Zinc alloy powder; Simultaneously, because silver-colored zinc alloy granules plays the effect of reacting intermediary in the course of reaction of silver nitrate and NaOH, make to react the surface that a part of silver oxide generated can cover silver-colored zinc alloy granules, improve the adhesion between second-phase (i.e. zinc oxide phase), avoid the direct contact between the brittlement phase (i.e. zinc oxide phase) that exists in prior art, thus make contact material have better processing characteristics.
2, the method for the invention technique is simple, to human body and environmental pollution little, be applicable to suitability for industrialized production.
Accompanying drawing explanation
Fig. 1 is the metallographic structure figure of the contact material that the embodiment of the present invention 1 obtains;
Fig. 2 is the metallographic structure figure of the contact material that the embodiment of the present invention 2 obtains;
Fig. 3 is the metallographic structure figure of the contact material that the embodiment of the present invention 3 obtains;
Fig. 4 is the metallographic structure figure of the contact material that the embodiment of the present invention 4 obtains.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is described in further detail, and to understand content of the present invention better, but the present invention is not limited to following examples.
Embodiment 1
1) first according to preparation 10kg Ag-ZnO (11)-In
2o
3(1.5) material mixture ratio calculates the consumption of required indium metal, silver, zinc, take pure indium block 0.124kg, pure spelter 0.884kg for subsequent use, the total amount of silver is divided into two parts, wherein a part is the fine silver block of 3.411kg, another part is the silver nitrate of 8.404kg, take for subsequent use, then according to the consumption weighing sodium hydroxide 2.175kg of silver nitrate, for subsequent use;
2) the pure indium block taken, pure spelter and fine silver block are placed in mid-frequency melting furnace are smelted into uniform alloy molten solution, be then atomized through hydraulic atomized equipment, the powder slurries obtained is dried, crosses 200 mesh sieves, obtain silver-colored zinc indium alloy powder;
3) get silver nitrate is made into 40w/w% liquor argenti nitratis ophthalmicus by water-soluble solution, the silver-colored zinc indium alloy powder of gained and liquor argenti nitratis ophthalmicus are placed in reactor, stir, obtain the suspension of silver nitrate and silver-colored zinc indium alloy powder;
4) sodium hydroxide solution that NaOH water is made into 10w/w% is got, under stirring condition, in above-mentioned gained suspension, add the sodium hydroxide solution (drop rate is 0.5L/min) of 10w/w%, reaction 1h, obtains the composite powder of silver oxide and silver-colored zinc indium alloy after filtration;
5) by the above-mentioned silver oxide that is obtained by reacting and silver-colored zinc indium alloy composite powder washed with de-ionized water to neutral, 15h is dried in an oven subsequently with 120 DEG C of temperature, then the silver oxide of oven dry and silver-colored zinc indium alloy composite powder are placed in bipyramid blender broken (rotating speed 25r/min, time 1h); It is that the oxygen atmosphere of 0.5MPa is oxidized 10h under 700 DEG C of conditions that gained powder is placed in oxygen pressure, crosses 200 mesh sieves, obtains Ag-ZnO indium oxide composite powder;
6) gained composite powder shaping on isostatic pressing machine (briquetting pressure is 150MPa), and the pressed compact after shaping is placed in air with 880 DEG C of temperature sintering 4h, obtain Ag-ZnO indium oxide billet;
7) wire rod is processed in the hot extrusion of gained Ag-ZnO indium oxide billet, and extrusion temperature is 850 DEG C, and mold preheating temperature is 150 DEG C, and extrusion ratio is 190; Gained wire rod again through repeatedly drawing, be annealed to required size after to be processed into Ag-ZnO indium oxide (Ag-ZnO (the 11)-In of rivet type with rivet driver
2o
3(1.5)) electrical contact.
Carry out metallographic structure analysis to gained contact material, as shown in Figure 1, the metallographic structure of contact product prepared of technical scheme is even as seen from the figure, and tiny zinc oxide and indium oxide particles are evenly distributed in silver matrix.
Embodiment 2
1) first according to preparation 10kg Ag-ZnO (11)-Bi
2o
3(1.5)-CuO (1.0) material mixture ratio calculates the consumption of required bismuth metal, copper, silver, zinc, take pure bismuth block 0.135kg, fine copper block 0.08kg, pure spelter 0.884kg is for subsequent use, the total amount of silver is divided into two parts, wherein a part is the fine silver block of 3.321kg, another part is the silver nitrate of 8.388kg, take for subsequent use, then according to the consumption weighing sodium hydroxide 2.171kg of silver nitrate, for subsequent use;
2) the bismuth block taken, fine copper block, pure spelter and fine silver block are placed in mid-frequency melting furnace are smelted into uniform alloy molten solution, then be atomized through hydraulic atomized equipment, the powder slurries obtained is dried, crosses 200 mesh sieves, obtain silver-colored zinc bismuth copper alloy powder;
3) get silver nitrate is made into 25w/w% liquor argenti nitratis ophthalmicus by water-soluble solution, the silver-colored zinc bismuth copper alloy powder of gained and liquor argenti nitratis ophthalmicus are placed in reactor, stir, obtain the suspension of silver nitrate and silver-colored zinc bismuth copper alloy powder;
4) sodium hydroxide solution that NaOH water is made into 30w/w% is got, under stirring condition, in above-mentioned gained suspension, add the sodium hydroxide solution (drop rate is 1L/min) of 30w/w%, reaction 0.8h, obtains the composite powder of silver oxide and silver-colored zinc bismuth copper after filtration;
5) by the above-mentioned silver oxide that is obtained by reacting and silver-colored zinc bismuth copper alloy composite powder washed with de-ionized water to neutral, 18h is dried in an oven subsequently with 100 DEG C of temperature, then the silver oxide of oven dry and silver-colored zinc bismuth copper alloy composite powder are placed in bipyramid blender broken (rotating speed 25r/min, time 1h); It is that the oxygen atmosphere of 0.2MPa is oxidized 6h under 700 DEG C of conditions that gained powder is placed in oxygen pressure, crosses 200 mesh sieves, obtains Ag-ZnO bismuth oxide cupric oxide composite powder;
6) gained composite powder shaping on isostatic pressing machine (briquetting pressure is 120MPa), and the pressed compact after shaping is placed in air with 900 DEG C of temperature sintering 6h, obtain Ag-ZnO bismuth oxide cupric oxide billet;
7) band is processed in the hot extrusion of gained Ag-ZnO bismuth oxide cupric oxide billet, and extrusion temperature is 850 DEG C, and mold preheating temperature is 150 DEG C, and extrusion ratio is 150; Again by band through repeatedly Rolling compund, be annealed to required size after to be processed into Ag-ZnO bismuth oxide cupric oxide (Ag-ZnO (the 11)-Bi of sheet with punch press
2o
3(1.5)-CuO (1.0)) electrical contact.
Carry out metallographic structure analysis to gained contact material, as shown in Figure 2, the metallographic structure of contact product prepared of technical scheme is even as seen from the figure, and tiny zinc oxide, bismuth oxide and copper oxide particle are evenly distributed in silver matrix.
Embodiment 3
1) consumption of required metallic copper, silver, zinc is first calculated according to preparation 10kg Ag-ZnO (18)-CuO (0.1) material mixture ratio, take fine copper block 0.008kg, pure spelter 1.446kg is for subsequent use, the total amount of silver is divided into two parts, wherein a part is the fine silver block of 5.777kg, another part is the silver nitrate of 3.799kg, take for subsequent use, then according to the consumption weighing sodium hydroxide 0.983kg of silver nitrate, for subsequent use;
2) the fine copper block taken, pure spelter and fine silver block are placed in mid-frequency melting furnace are smelted into uniform alloy molten solution, be then atomized through hydraulic atomized equipment, the powder slurries obtained is dried, crosses 200 mesh sieves, obtain silver zinc copper alloy powder;
3) get silver nitrate is made into 25w/w% liquor argenti nitratis ophthalmicus by water-soluble solution, the silver zinc copper alloy powder of gained and liquor argenti nitratis ophthalmicus are placed in reactor, stir, obtain the suspension of silver nitrate and silver zinc copper alloyed powder;
4) sodium hydroxide solution that NaOH water is made into 20w/w% is got, under stirring condition, in above-mentioned gained suspension, add the sodium hydroxide solution (drop rate is 1L/min) of 20w/w%, reaction 0.5h, obtains the composite powder of silver oxide and silver zinc copper after filtration;
5) by the above-mentioned silver oxide that is obtained by reacting and silver zinc copper alloy composite powder washed with de-ionized water to neutral, 18h is dried in an oven subsequently with 100 DEG C of temperature, then the silver oxide of oven dry and silver zinc copper alloy composite powder are placed in bipyramid blender broken (rotating speed 25r/min, time 1h); It is that the oxygen atmosphere of 0.8MPa is oxidized 10h under 700 DEG C of conditions that gained powder is placed in oxygen pressure, crosses 200 mesh sieves, obtains Ag-ZnO cupric oxide composite powder;
6) gained composite powder shaping on isostatic pressing machine (briquetting pressure is 150MPa), and the pressed compact after shaping is placed in air with 920 DEG C of temperature sintering 6h, obtain Ag-ZnO cupric oxide billet;
7) band is processed in the hot extrusion of gained Ag-ZnO cupric oxide billet, and extrusion temperature is 850 DEG C, and mold preheating temperature is 150 DEG C, and extrusion ratio is 150; Again by band through repeatedly Rolling compund, be annealed to required size after to be processed into Ag-ZnO cupric oxide (Ag-ZnO (18)-CuO (the 0.1)) electrical contact of sheet with punch press.
Carry out metallographic structure analysis to gained contact material, as shown in Figure 3, the metallographic structure of contact product prepared of technical scheme is even as seen from the figure, and tiny zinc oxide and copper oxide particle are evenly distributed in silver matrix.
Embodiment 4
1) first according to preparation 10kg Ag-ZnO (12)-In
2o
3(0.5)-Bi
2o
3(0.5)-CuO (0.5) material mixture ratio calculates the consumption of required indium metal, bismuth, copper, silver, zinc, take fine copper block 0.04kg, pure bismuth block 0.045kg, pure indium block 0.041kg, pure spelter 0.964kg are for subsequent use, the total amount of silver is divided into two parts, wherein a part is the fine silver block of 3.731kg, another part is the silver nitrate of 7.743kg, take for subsequent use, then according to the consumption weighing sodium hydroxide 2.004kg of silver nitrate, for subsequent use;
2) the pure indium block taken, pure bismuth block, fine copper block, pure spelter and fine silver block are placed in mid-frequency melting furnace are smelted into uniform alloy molten solution, then be atomized through hydraulic atomized equipment, the powder slurries obtained is dried, crosses 200 mesh sieves, obtain silver-colored zinc indium bismuth copper alloy powder;
3) get silver nitrate is made into 30w/w% liquor argenti nitratis ophthalmicus by water-soluble solution, the silver-colored zinc indium bismuth copper alloy powder of gained and liquor argenti nitratis ophthalmicus are placed in reactor, stir, obtain the suspension of silver nitrate and silver-colored zinc indium bismuth copper alloy powder;
4) sodium hydroxide solution that NaOH water is made into 25w/w% is got, under stirring condition, in above-mentioned gained suspension, add the sodium hydroxide solution (drop rate is 1L/min) of 25w/w%, reaction 0.5h, obtains the composite powder of silver oxide and silver-colored zinc indium bismuth copper after filtration;
5) by the above-mentioned silver oxide that is obtained by reacting and silver-colored zinc indium bismuth copper alloy composite powder washed with de-ionized water to neutral, 18h is dried in an oven subsequently with 100 DEG C of temperature, then the silver oxide of oven dry and silver-colored zinc indium bismuth copper alloy composite powder are placed in bipyramid blender broken (rotating speed 25r/min, time 1h); It is that the oxygen atmosphere of 0.1MPa is oxidized 8h under 680 DEG C of conditions that gained powder is placed in oxygen pressure, crosses 200 mesh sieves, obtains Ag-ZnO indium oxide bismuth oxide cupric oxide composite powder;
6) gained composite powder shaping on isostatic pressing machine (briquetting pressure is 150MPa), and the pressed compact after shaping is placed in air with 920 DEG C of temperature sintering 6h, obtain Ag-ZnO indium oxide bismuth oxide cupric oxide billet;
7) band is processed in the hot extrusion of gained Ag-ZnO indium oxide bismuth oxide cupric oxide billet, and extrusion temperature is 850 DEG C, and mold preheating temperature is 150 DEG C, and extrusion ratio is 150; Again by band through repeatedly Rolling compund, be annealed to required size after to be processed into Ag-ZnO indium oxide bismuth oxide cupric oxide (Ag-ZnO (the 12)-In of sheet with punch press
2o
3(0.5)-Bi
2o
3(0.5)-CuO (0.5)) electrical contact.
Carry out metallographic structure analysis to gained contact material, as shown in Figure 4, the metallographic structure of contact product prepared of technical scheme is even as seen from the figure, and tiny zinc oxide, indium oxide, bismuth oxide and copper oxide particle are evenly distributed in silver matrix.
The contact material that embodiment 1 is obtained carries out Performance Detection, and compares with the contact product that existing routine mixes the Ag-ZnO of the interpolation indium oxide that powder-extrusion obtains, result as described in Table 1:
Table 1: embodiment 1 and existing routine mix wire product performance prepared by powder-extrusion
As shown in Table 1, the performance of silver zinc oxide contact material that prepared by technical scheme is better than existing routine and mixes powder-extrusion silver zinc oxide contact material performance.
Claims (6)
1., containing a processing method for the silver zinc oxide electrical contact material of additive, it is characterized in that comprising the following steps:
1) calculate according to the material mixture ratio of the silver zinc oxide electrical contact of required preparation needed for the consumption of metallic zinc, metallic additions and silver, required silver is divided into two parts, a part is together placed in mid-frequency melting furnace with the form of argent and metallic zinc and metallic additions and is smelted into uniform alloy molten solution, then makes silver-colored Zinc alloy powder through being atomized; Another part takes for subsequent use with the form of silver nitrate, and generates the consumption of the NaOH needed for silver oxide according to the Dosage calculation silver nitrate of silver nitrate and NaOH reaction, takes for subsequent use; Get silver nitrate is made into 20 ~ 40w/w% liquor argenti nitratis ophthalmicus by water-soluble solution, silver-colored Zinc alloy powder and liquor argenti nitratis ophthalmicus are placed in reactor, stir, obtain the suspension of silver nitrate and silver-colored Zinc alloy powder; Described metallic additions is one or more the combination be selected from bismuth, copper and indium;
2) get NaOH is made into 10 ~ 30w/w% sodium hydroxide solution by water-soluble solution, join step 1) stirring reaction in the suspension of gained, there is precipitation to generate, filter, obtain the composite powder of silver oxide and silver-colored kirsite;
3) composite powder of the silver oxide of gained and silver-colored kirsite is washed to neutrality, dry, pulverizing is placed in oxygen-containing atmosphere and is oxidized, and then pulverizes, and obtains the Ag-ZnO composite powder containing additive;
4) by gained containing the Ag-ZnO composite powder isostatic compaction of additive, and then be placed in oxygen-containing atmosphere and sinter, obtain the Ag-ZnO billet containing additive;
5) gained Ag-ZnO billet through hot extrusion be processed into band or wire rod, after through Rolling compund or drawing, then through punch process or rivet driver processing, namely obtain sheet or the rivet type silver zinc oxide electrical contact material containing additive.
2. processing method according to claim 1, is characterized in that: step 1) in, need in the silver zinc oxide electrical contact material of preparation, zinc oxide content is 8 ~ 18wt%, and the content of metallic additions is 0.1 ~ 2.5wt%, and surplus is silver.
3. processing method according to claim 1, is characterized in that: step 1) in, be describedly together placed in argent form and metallic zinc and metallic additions 10 ~ 80wt% that the argent of melting in mid-frequency melting furnace accounts for the total consumption of silver.
4. processing method according to claim 1, is characterized in that: step 1) in, step 1) in, get silver nitrate is made into 30 ~ 40w/w% liquor argenti nitratis ophthalmicus by water-soluble solution.
5. processing method according to claim 1, is characterized in that: step 1) in, the consumption of NaOH is 4/17 ~ 5/17 of silver nitrate consumption.
6. processing method according to claim 1, is characterized in that: step 2) in, the concentration of sodium hydroxide solution is 15 ~ 25w/w%.
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1524074A (en) * | 1976-07-12 | 1978-09-06 | Square D Co | Electrically conductive composite materials |
| CN101136287A (en) * | 2007-08-29 | 2008-03-05 | 桂林电器科学研究所 | High temperature resistant silver oxide contact tip material manufacturing method |
| CN101241804A (en) * | 2007-11-23 | 2008-08-13 | 中南大学 | A silver-ZnO electric contact and its making method |
| CN101415644A (en) * | 2006-03-31 | 2009-04-22 | 尤米科尔股份有限公司 | Process for manufacture of silver-based particles and electrical contact materials |
| CN101944441A (en) * | 2010-08-31 | 2011-01-12 | 扬州乐银合金科技有限公司 | Silver zinc oxide electric contact material and preparation method thereof |
| CN102031438A (en) * | 2010-12-31 | 2011-04-27 | 桂林电器科学研究院 | Sliver stannic oxide electrical contact material and preparation method thereof |
| CN102330008A (en) * | 2011-10-20 | 2012-01-25 | 福达合金材料股份有限公司 | Preparation method for silver zinc oxide electrical contact |
| CN102350502A (en) * | 2011-10-27 | 2012-02-15 | 福达合金材料股份有限公司 | Preparation method of silver-stannic oxide by using physical metallurgical coating method |
| CN103710608A (en) * | 2013-12-30 | 2014-04-09 | 桂林电器科学研究院有限公司 | Preparation method for silver-zinc-oxide electric contact material containing additive |
| CN103706795A (en) * | 2013-12-30 | 2014-04-09 | 桂林电器科学研究院有限公司 | Preparation method of atomized silver and zinc oxide electrical contact materials containing additives |
-
2014
- 2014-12-30 CN CN201410844384.5A patent/CN104493178B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1524074A (en) * | 1976-07-12 | 1978-09-06 | Square D Co | Electrically conductive composite materials |
| CN101415644A (en) * | 2006-03-31 | 2009-04-22 | 尤米科尔股份有限公司 | Process for manufacture of silver-based particles and electrical contact materials |
| CN101136287A (en) * | 2007-08-29 | 2008-03-05 | 桂林电器科学研究所 | High temperature resistant silver oxide contact tip material manufacturing method |
| CN101241804A (en) * | 2007-11-23 | 2008-08-13 | 中南大学 | A silver-ZnO electric contact and its making method |
| CN101944441A (en) * | 2010-08-31 | 2011-01-12 | 扬州乐银合金科技有限公司 | Silver zinc oxide electric contact material and preparation method thereof |
| CN102031438A (en) * | 2010-12-31 | 2011-04-27 | 桂林电器科学研究院 | Sliver stannic oxide electrical contact material and preparation method thereof |
| CN102330008A (en) * | 2011-10-20 | 2012-01-25 | 福达合金材料股份有限公司 | Preparation method for silver zinc oxide electrical contact |
| CN102350502A (en) * | 2011-10-27 | 2012-02-15 | 福达合金材料股份有限公司 | Preparation method of silver-stannic oxide by using physical metallurgical coating method |
| CN103710608A (en) * | 2013-12-30 | 2014-04-09 | 桂林电器科学研究院有限公司 | Preparation method for silver-zinc-oxide electric contact material containing additive |
| CN103706795A (en) * | 2013-12-30 | 2014-04-09 | 桂林电器科学研究院有限公司 | Preparation method of atomized silver and zinc oxide electrical contact materials containing additives |
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