CN104493178B - A kind of processing method of the silver zinc oxide electrical contact material containing additive - Google Patents
A kind of processing method of the silver zinc oxide electrical contact material containing additive Download PDFInfo
- Publication number
- CN104493178B CN104493178B CN201410844384.5A CN201410844384A CN104493178B CN 104493178 B CN104493178 B CN 104493178B CN 201410844384 A CN201410844384 A CN 201410844384A CN 104493178 B CN104493178 B CN 104493178B
- Authority
- CN
- China
- Prior art keywords
- silver
- zinc
- oxide
- powder
- electrical contact
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Powder Metallurgy (AREA)
- Contacts (AREA)
- Manufacture Of Switches (AREA)
Abstract
The processing method that the invention discloses a kind of silver zinc oxide electrical contact material containing additive, particularly as follows: the consumption of metallic zinc, metallic additions and the silver needed for calculating according to the material mixture ratio of the silver zinc oxide electrical contact of required preparation, a part makes silver Zinc alloy powder with the form of argent with metallic zinc and metallic additions together melting, atomization；Another part silver reacts with sodium hydroxide after mixing with the silver-colored Zinc alloy powder prepared with the form of silver nitrate again and obtains silver oxide and the composite powder of silver kirsite；Gained composite powder is washed to neutrality, and dry, pulverizing is placed in oxygen-containing atmosphere oxidation, obtains the Ag-ZnO composite powder containing additive；This composite powder is processed into band or wire rod through hot extrusion, is machined through isostatic pressing, sintering, gained Ag-ZnO billet, to obtain final product.Contact metallographic structure obtained by this method is more uniformly distributed, and processing characteristics is more preferable.
Description
Technical field
The processing method that the present invention relates to a kind of silver zinc oxide electrical contact material containing additive, belongs to metal
Based composites field.
Background technology
Silver zinc oxide contact material has excellent interrupting performance, resistance fusion welding and a resistance to arc erosion, but its
There is the shortcomings such as contact resistance is big, temperature rise is high, have a strong impact on the electric property of electrical equipment.
Discovery is studied, one or more oxidations being added with in bismuth oxide, copper oxide and Indium sesquioxide. through forefathers
The silver zinc oxide electrical contact material of thing not only has good interrupting performance, resistance fusion welding and resistance to arc erosion
Property, and contact resistance and the temperature rise of contact material can also be reduced, improve the electrical resistance of electrical equipment well
Energy.As a rule, the preparation technology of the silver zinc oxide electrical contact containing additive mainly has two kinds: powder mixing method
And internal oxidation.Powder mixing method is by mechanical mixture mode, argentum powder, oxide powder and zinc and additive powder body to be mixed
Be combined, then mixed powder is carried out isostatic pressed, sinter, a series of processing such as extruding, finally obtain
Silver zinc oxide electrical contact containing additive.This method preparation technology is simple, the process-cycle is short, but easily
The problem that additive is assembled occurs.Internal oxidation refers to the silver-colored kirsite containing addition element by oxidation system
The Ag-ZnO material of additive must be contained, then carry out isostatic pressed, sinter, a series of processing such as extruding,
Finally obtain the silver zinc oxide electrical contact containing additive.The deficiency of this kind of method is easily in material structure
Lean oxide region occurs, affects the electrical property of material.
The CN103710608A patent of invention of application before the applicant, discloses a kind of silver oxygen Han additive
Changing the preparation method of zinc electrical contact material, first the method is by the salt compounds solution containing addition element
Join in argentum powder or oxide powder and zinc and make slurry, be baked to, crush, sieve after with oxide powder and zinc or
Argentum powder mixes, and obtains Ag-ZnO mixed powder, pass it through afterwards isostatic pressed, sinter, extruding etc.
It is processed into electrical contact.The method preferably improves the phenomenon of tradition blending processes of powders additive segregation, makes to add
Adding agent is no longer simple mechanical mixture, but is combined together with matrix well by cladding, makes gained
Ag-ZnO material there is more excellent performance.But composite mortar likely can be because of in drying course
The speed that evaporates is uneven causes the addition element phenomenon separating out generation segregation on silver matrix, it addition,
Argentum powder (or the oxide powder and zinc containing additive) containing additive is close with oxide powder and zinc (or argentum powder)
Degree difference is relatively big, and two kinds of powder body also there will be zinc oxide in mixed process and unite the phenomenon assembled.
Summary of the invention
The technical problem to be solved in the present invention is to provide that a kind of technique is simple, additive is in matrix material point
Cloth contains the processing method of the silver zinc oxide electrical contact material of additive, silver oxygen obtained by this method uniformly
Change zinc electrical contact metallographic structure is uniform, have excellent processing characteristics.
The processing method of the silver zinc oxide electrical contact material containing additive of the present invention, it is characterised in that
Comprise the following steps:
1) metallic zinc needed for calculating according to the material mixture ratio of the silver zinc oxide electrical contact of required preparation, gold
Belonging to additive and the consumption of silver, required silver is divided into two parts, a part is with the form of argent and gold
Genus zinc and metallic additions are smelted into uniform alloy molten solution, then through mist in being together placed in mid-frequency melting furnace
Change and make silver Zinc alloy powder；Another part weighs standby with the form of silver nitrate, and according to the use of silver nitrate
Amount calculates the consumption of the sodium hydroxide needed for silver nitrate and sodium hydroxide reaction generation silver oxide, weighs standby；
Take silver nitrate water dissolution and be made into the silver nitrate solution of 20～40w/w%, by molten to silver Zinc alloy powder and silver nitrate
Liquid is placed in reactor, stirs, and obtains silver nitrate and the suspension of silver Zinc alloy powder；Described gold
Belonging to additive is one or more the combination in bismuth, copper and indium；
2) take sodium hydroxide water dissolution and be made into the sodium hydroxide solution of 10～30w/w%, join step 1)
Stirring reaction in the suspension of gained, has precipitation to generate, filters, and obtains silver oxide and silver the answering of kirsite
Close powder；
3) by the silver oxide of gained and silver kirsite composite powder be washed to neutrality, be dried, pulverize rearmounted
Aoxidize in oxygen-containing atmosphere, then pulverize, obtain the Ag-ZnO composite powder containing additive；
4) by the Ag-ZnO composite powder isostatic pressing containing additive of gained, it is placed in oxygenous the most again
Atmosphere sinters, obtains 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 draw
Pull out, more stamped processing or rivet driver are processed, and i.e. obtain lamellar or the rivet type Ag-ZnO containing additive
Electrical contact material.
Required silver is divided into two parts by the present invention, and a part is with the form of argent and metallic zinc and metal
Additive is smelted into uniform alloy molten solution in being together placed in mid-frequency melting furnace, then make containing adding through atomization
Add the silver-colored Zinc alloy powder of thing；Another part silver closes with the silver-colored zinc containing additive prepared with the form of silver nitrate
React with sodium hydroxide again after bronze mixing and obtain silver oxide and the composite powder of silver kirsite, due to silver zinc
Density (about 8.5～the 9.6g/cm of alloyed powder3) and the silver oxide (7.143g/cm of reaction generation3) close
Degree relatively, thus can make silver oxide and silver Zinc alloy powder mix evenly so that silver oxide
Grain is more uniformly distributed in silver Zinc alloy powder, effectively improves oxide powder and zinc in prior art and unites poly-
The phenomenon of collection, so that gained silver zinc oxide electrical contact material has uniform metallographic structure；The opposing party
Face, the oxygen that silver Zinc alloy powder is produced by silver oxide decomposes in oxidizing process occurs with silver kirsite
Reaction in-situ, decreases the zinc element diffusion to granule top layer, accelerates the oxidation of silver Zinc alloy powder；With
Time, owing to silver zinc alloy granules plays the work of reaction intermediary in the silver nitrate course of reaction with sodium hydroxide
With so that a part of silver oxide that reaction generates can cover the surface at silver zinc alloy granules, improves
Adhesion between second phase (i.e. zinc oxide phase), it is to avoid brittlement phase (i.e. oxygen present in prior art
Change zinc phase) between directly contact so that contact material has more preferable processing characteristics.
The step 1 of said method) in, in the described silver zinc oxide electrical contact material needing preparation, zinc oxide
Content is 8～18wt%, and the content of metallic additions is 0.1～2.5wt%, and surplus is silver；Preferred
Being chosen as zinc oxide content is 10～12wt%, and the content of metallic additions is 0.5～1wt%, and surplus is silver.
In this step, preferably silver nitrate is configured to the silver nitrate solution of 30～40w/w%, more preferably preparation
Becoming the silver nitrate solution of 30～35w/w%, the metallographic structure that so can make gained electrical contact material is the most equal
Even.In this step, the consumption of sodium hydroxide is usually the 4/17～5/17 of silver nitrate consumption, more preferably
4.4/17.When two or more combination during metallic additions is bismuth, copper and indium, add meeting metal
Add the total addition of thing account for silver zinc oxide electrical contact material gross mass 0.1～2.5wt% in the range of time, they
Between proportioning can be any proportioning.
The step 1 of said method) in, described together put with metallic zinc and metallic additions with argent form
In mid-frequency melting furnace, the argent of melting accounts for the ratio of the total consumption of silver and is usually 10～80wt%.
The step 2 of said method) in, the addition speed of described sodium hydroxide solution be preferably 0.1～
1L/min；The concentration of described sodium hydroxide solution is preferably 15～25w/w%, and gained electricity so can be made to touch
The metallographic structure of head material is more uniformly distributed.In this step, stirring reaction is generally carried out under normal temperature condition,
The time of stirring reaction is usually 0.3～1h.
The step 3 of said method) in, the operation being dried and pulverizing is same as the prior art, in the application,
Preferably it is dried under the conditions of 100～150 DEG C until the composite powder of silver oxide and silver kirsite is dried i.e.
Can, it usually needs the time of 12～18h；Be typically dried silver oxide and silver kirsite is compound
Powder crosses 100～200 eye mesh screens after pulverizing, and extracting screen underflow enters next process.Described oxidation is preferred
Be oxygen pressure be 0.1～1.0MPa, temperature be 400～800 DEG C under the conditions of carry out, the time of oxidation be 6～
12h。
The step 4 of said method) in, described isostatic pressing and sintering operation and existing routine operation phase
With, specifically, the briquetting pressure of isostatic pressing is usually 100～150MPa；It is typically isostatic pressed
Pressed compact after molding is placed in oxygen-containing atmosphere under 880～920 DEG C of temperature conditionss sintering 4～8h, to obtain
Ag-ZnO billet.
The step 5 of said method) in, described hot extrusion etc. operates all identical with existing routine operation, tool
Body ground, the temperature of hot extrusion is usually 750～900 DEG C, and extrusion ratio is 10～200.When by Ag-ZnO
When band is processed in billet hot extrusion, gained band through repeatedly Rolling compund, be annealed to required size after warp
Punch press punching press, obtains the silver zinc oxide electrical contact material containing additive of lamellar.When by Ag-ZnO billet
When wire rod is processed in hot extrusion, gained wire rod adds through rivet driver after repeatedly drawing and annealing to required size
Work, obtains the silver zinc oxide electrical contact material containing additive of rivet type.
Compared with prior art, present invention is characterized in that
1, required silver is divided into two parts by the present invention, and a part is with the form of argent and metallic zinc and gold
Belong in additive is together placed in mid-frequency melting furnace and be smelted into uniform alloy molten solution, then make through atomization and contain
The silver-colored Zinc alloy powder of additive；Another part silver is with the form of silver nitrate and the silver-colored zinc containing additive prepared
React with sodium hydroxide again after alloyed powder mixing and obtain silver oxide and the composite powder of silver kirsite, due to silver
Density (about 8.5～the 9.6g/cm of Zinc alloy powder3) and the silver oxide (7.143g/cm of reaction generation3)
Density relatively, thus can make silver oxide and silver Zinc alloy powder mix evenly so that silver oxide
Granule is more uniformly distributed in silver Zinc alloy powder, effectively improves oxide powder and zinc in prior art and unites
The phenomenon assembled, so that gained silver zinc oxide electrical contact material has uniform metallographic structure；Another
Aspect, the oxygen that silver Zinc alloy powder is produced by silver oxide decomposes in oxidizing process is sent out with silver kirsite
Raw reaction in-situ, decreases the zinc element diffusion to granule top layer, accelerates the oxidation of silver Zinc alloy powder；
Simultaneously as silver zinc alloy granules plays reaction intermediary in the silver nitrate course of reaction with sodium hydroxide
Effect so that a part of silver oxide that reaction generates can cover the surface at silver zinc alloy granules, improves
Adhesion between second phase (i.e. zinc oxide phase), it is to avoid present in prior art, brittlement phase is (i.e.
Zinc oxide phase) between directly contact so that contact material has more preferable processing characteristics.
2, the method for the invention technique is simple, little to human body and environmental pollution, is suitable 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 prepares；
Fig. 2 is the metallographic structure figure of the contact material that the embodiment of the present invention 2 prepares；
Fig. 3 is the metallographic structure figure of the contact material that the embodiment of the present invention 3 prepares；
Fig. 4 is the metallographic structure figure of the contact material that the embodiment of the present invention 4 prepares.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is described in further detail, to be more fully understood that the present invention's
Content, but the present invention is not limited to following example.
Embodiment 1
1) it is first according to prepare 10kg Ag-ZnO (11)-In2O3(1.5) material mixture ratio calculate required indium metal,
Silver, the consumption of zinc, weigh pure indium block 0.124kg, pure spelter 0.884kg standby, the total amount of silver is divided
Becoming two parts, a portion is the fine silver block of 3.411kg, and another part is the silver nitrate of 8.404kg,
Weigh standby, further according to consumption weighing sodium hydroxide 2.175kg of silver nitrate, standby；
2) uniform conjunction it is smelted in the pure indium block weighed, pure spelter and fine silver block being placed in mid-frequency melting furnace
Gold liquation, is then atomized through hydraulic atomized equipment, is dried by the powder slurries obtained, crosses 200
Mesh sieve, obtains silver zinc indium alloy powder；
3) take silver nitrate water dissolution and be made into the silver nitrate solution of 40w/w%, by the silver-colored zinc indium alloy powder of gained
End and silver nitrate solution are placed in reactor, stir, and obtain the outstanding of silver nitrate and silver zinc indium alloy powder
Supernatant liquid；
4) take sodium hydroxide water and be made into the sodium hydroxide solution of 10w/w%, under stirring condition, to above-mentioned institute
Obtain the sodium hydroxide solution (drop rate is 0.5L/min) adding 10w/w% in suspension, react 1h,
Silver oxide and the composite powder of silver zinc indium alloy is obtained after filtration；
5) during the silver oxide above-mentioned reaction obtained and silver zinc indium alloy composite powder deionized water clean extremely
Property, dry 15h with 120 DEG C of temperature the most in an oven, then by the silver oxide dried and silver zinc indium alloy
Composite powder is placed in bipyramid blender broken (rotating speed 25r/min, time 1h)；Gained powder is placed in oxygen
Atmospheric pressure be 0.5MPa oxygen atmosphere under the conditions of 700 DEG C aoxidize 10h, cross 200 mesh sieves, obtain
Ag-ZnO Indium sesquioxide. composite powder；
6) gained composite powder molding on isostatic pressing machine (briquetting pressure is 150MPa), and by the pressure after molding
Base is placed in air with 880 DEG C of temperature sintering 4h, obtains Ag-ZnO Indium sesquioxide. billet；
7) wire rod is processed in the billet hot extrusion of gained Ag-ZnO Indium sesquioxide., and extrusion temperature is 850 DEG C,
Mold preheating temperature is 150 DEG C, and extrusion ratio is 190；Gained wire rod again through repeatedly drawing and annealing to required
It is processed into the Ag-ZnO Indium sesquioxide. of rivet type with rivet driver after the size wanted
(Ag-ZnO(11)-In2O3(1.5)) electrical contact.
Gained contact material is carried out metallographic structure analysis, as it is shown in figure 1, present techniques as seen from the figure
The metallographic structure of contact product prepared by scheme is uniform, and tiny zinc oxide and indium oxide particles divide equably
Cloth is in silver matrix.
Embodiment 2
1) it is first according to prepare 10kg Ag-ZnO (11)-Bi2O3(1.5)-CuO (1.0) material mixture ratio calculates institute
Need the consumption of bismuth metal, copper, silver, zinc, weigh pure bismuth block 0.135kg, fine copper block 0.08kg, pure zinc
Block 0.884kg is standby, and the total amount of silver is divided into two parts, and a portion is the fine silver block of 3.321kg,
Another part is the silver nitrate of 8.388kg, weighs standby, and the consumption further according to silver nitrate weighs hydroxide
Sodium 2.171kg, standby；
2) it is smelted in the bismuth block weighed, fine copper block, pure spelter and fine silver block being placed in mid-frequency melting furnace all
Even alloy molten solution, is then atomized through hydraulic atomized equipment, is dried by the powder slurries obtained,
Cross 200 mesh sieves, obtain silver zinc bismuth copper alloy powder；
3) take silver nitrate water dissolution and be made into the silver nitrate solution of 25w/w%, by the silver-colored zinc bismuth copper alloy of gained
Powder and silver nitrate solution are placed in reactor, stir, and obtain silver nitrate and silver zinc bismuth copper alloy powder
Suspension；
4) take sodium hydroxide water and be made into the sodium hydroxide solution of 30w/w%, under stirring condition, to above-mentioned institute
Obtain the sodium hydroxide solution (drop rate is 1L/min) adding 30w/w% in suspension, react 0.8h,
Silver oxide and the composite powder of silver zinc bismuth copper is obtained after filtration；
5) silver oxide above-mentioned reaction obtained and silver zinc bismuth copper alloy composite powder deionized water clean extremely
Neutrality, dries 18h with 100 DEG C of temperature, the most in an oven then by the silver oxide dried and silver zinc bismuth copper
Alloy composite powder is placed in bipyramid blender broken (rotating speed 25r/min, time 1h)；Gained powder is put
In the oxygen atmosphere that oxygen pressure is 0.2MPa, under the conditions of 700 DEG C, aoxidize 6h, cross 200 mesh sieves,
To Ag-ZnO bismuth oxide copper oxide composite powder；
6) gained composite powder molding on isostatic pressing machine (briquetting pressure is 120MPa), and by the pressure after molding
Base is placed in air with 900 DEG C of temperature sintering 6h, obtains Ag-ZnO bismuth oxide copper oxide billet；
7) band is processed in the billet hot extrusion of gained Ag-ZnO bismuth oxide copper oxide, and extrusion temperature is 850
DEG C, mold preheating temperature is 150 DEG C, and extrusion ratio is 150；Again by band through repeatedly Rolling compund, move back
Fire is to the Ag-ZnO bismuth oxide copper oxide being processed into lamellar after required size with punch press
(Ag-ZnO(11)-Bi2O3(1.5)-CuO (1.0)) electrical contact.
Gained contact material is carried out metallographic structure analysis, as in figure 2 it is shown, present techniques as seen from the figure
The metallographic structure of contact product prepared by scheme is uniform, tiny zinc oxide, bismuth oxide and copper oxide particle
It is evenly distributed in silver matrix.
Embodiment 3
1) be first according to prepare 10kg Ag-ZnO (18)-CuO (0.1) material mixture ratio calculate required metallic copper,
Silver, the consumption of zinc, weigh fine copper block 0.008kg, pure spelter 1.446kg standby, the total amount of silver is divided
Becoming two parts, a portion is the fine silver block of 5.777kg, and another part is the silver nitrate of 3.799kg,
Weigh standby, further according to consumption weighing sodium hydroxide 0.983kg of silver nitrate, standby；
2) uniform conjunction it is smelted in the fine copper block weighed, pure spelter and fine silver block being placed in mid-frequency melting furnace
Gold liquation, is then atomized through hydraulic atomized equipment, is dried by the powder slurries obtained, crosses 200
Mesh sieve, obtains silver zinc copper alloy powder；
3) take silver nitrate water dissolution and be made into the silver nitrate solution of 25w/w%, by the silver zinc copper alloyed powder of gained
End and silver nitrate solution are placed in reactor, stir, and obtain the outstanding of silver nitrate and silver zinc copper alloyed powder
Supernatant liquid；
4) take sodium hydroxide water and be made into the sodium hydroxide solution of 20w/w%, under stirring condition, to above-mentioned institute
Obtain the sodium hydroxide solution (drop rate is 1L/min) adding 20w/w% in suspension, react 0.5h,
The composite powder of silver oxide and silver zinc copper is obtained after filtration；
5) during the silver oxide above-mentioned reaction obtained and silver zinc copper alloy composite powder deionized water clean extremely
Property, dry 18h with 100 DEG C of temperature the most in an oven, then by the silver oxide dried and silver zinc copper alloy
Composite powder is placed in bipyramid blender broken (rotating speed 25r/min, time 1h)；Gained powder is placed in oxygen
Atmospheric pressure be 0.8MPa oxygen atmosphere under the conditions of 700 DEG C aoxidize 10h, cross 200 mesh sieves, obtain
Ag-ZnO copper oxide composite powder；
6) gained composite powder molding on isostatic pressing machine (briquetting pressure is 150MPa), and by the pressure after molding
Base is placed in air with 920 DEG C of temperature sintering 6h, obtains Ag-ZnO copper oxide billet；
7) band is processed in the billet hot extrusion of gained Ag-ZnO copper oxide, and extrusion temperature is 850 DEG C,
Mold preheating temperature is 150 DEG C, and extrusion ratio is 150；Again by band through repeatedly Rolling compund, be annealed to
It is processed into the Ag-ZnO copper oxide (Ag-ZnO (18)-CuO (0.1)) of lamellar with punch press after required size
Electrical contact.
Gained contact material is carried out metallographic structure analysis, as it is shown on figure 3, present techniques as seen from the figure
The metallographic structure of contact product prepared by scheme is uniform, and tiny zinc oxide and copper oxide particle divide equably
Cloth is in silver matrix.
Embodiment 4
1) it is first according to prepare 10kg Ag-ZnO (12)-In2O3(0.5)-Bi2O3(0.5)-CuO (0.5) material
Proportioning calculates required indium metal, bismuth, copper, silver, the consumption of zinc, weighs fine copper block 0.04kg, pure bismuth block
0.045kg, pure indium block 0.041kg, pure spelter 0.964kg are standby, and the total amount of silver is divided into two parts,
A portion is the fine silver block of 3.731kg, and another part is the silver nitrate of 7.743kg, weighs standby,
Further according to consumption weighing sodium hydroxide 2.004kg of silver nitrate, standby；
2) the pure indium block weighed, pure bismuth block, fine copper block, pure spelter and fine silver block are placed in mid-frequency melting furnace
Inside it is smelted into uniform alloy molten solution, is then atomized through hydraulic atomized equipment, the powder that will obtain
Slurry is dried, and crosses 200 mesh sieves, obtains silver zinc indium bismuth copper alloy powder；
3) take silver nitrate water dissolution and be made into the silver nitrate solution of 30w/w%, the silver-colored zinc indium bismuth copper of gained is closed
Bronze end and silver nitrate solution are placed in reactor, stir, and obtain silver nitrate and silver zinc indium bismuth copper closes
The suspension of bronze；
4) take sodium hydroxide water and be made into the sodium hydroxide solution of 25w/w%, under stirring condition, to above-mentioned institute
Obtain the sodium hydroxide solution (drop rate is 1L/min) adding 25w/w% in suspension, react 0.5h,
Silver oxide and the composite powder of silver zinc indium bismuth copper is obtained after filtration；
5) silver oxide above-mentioned reaction obtained and silver zinc indium bismuth copper alloy composite powder deionized water clean
To neutral, dry 18h with 100 DEG C of temperature the most in an oven, then by the silver oxide dried and silver zinc indium
Bismuth copper alloy composite powder is placed in bipyramid blender broken (rotating speed 25r/min, time 1h)；Gained powder
End is placed in the oxygen atmosphere that oxygen pressure is 0.1MPa and aoxidizes 8h under the conditions of 680 DEG C, crosses 200 mesh sieves,
Obtain Ag-ZnO Indium sesquioxide. bismuth oxide copper oxide composite powder；
6) gained composite powder molding on isostatic pressing machine (briquetting pressure is 150MPa), and by the pressure after molding
Base is placed in air with 920 DEG C of temperature sintering 6h, obtains Ag-ZnO Indium sesquioxide. bismuth oxide copper oxide billet；
7) band, hot extrusion temperature are processed in the billet hot extrusion of gained Ag-ZnO Indium sesquioxide. bismuth oxide copper oxide
Degree is 850 DEG C, and mold preheating temperature is 150 DEG C, and extrusion ratio is 150；Again by band through repeatedly rolling
Be combined, be annealed to required size after be processed into the Ag-ZnO Indium sesquioxide. bismuth oxide oxygen of lamellar with punch press
Change copper (Ag-ZnO (12)-In2O3(0.5)-Bi2O3(0.5)-CuO (0.5)) electrical contact.
Gained contact material is carried out metallographic structure analysis, as shown in Figure 4, present techniques as seen from the figure
The metallographic structure of contact product prepared by scheme is uniform, tiny zinc oxide, Indium sesquioxide., bismuth oxide and oxygen
Change copper granule to be evenly distributed in silver matrix.
The contact material that embodiment 1 prepares is carried out performance detection, and mixes powder-extruding legal system with existing routine
The contact product of Ag-ZnO adding Indium sesquioxide. compare, result as described in Table 1:
Table 1: embodiment 1 and existing routine mix wire product performance prepared by powder-squeezing and pressing method
As shown in Table 1, the performance of silver zinc oxide contact material prepared by technical scheme is better than existing
Conventional mixed powder-squeezing and pressing method silver zinc oxide contact material performance.
Claims (6)
1. the processing method of the silver zinc oxide electrical contact material containing additive, it is characterised in that bag
Include following steps:
1) according to required preparation silver zinc oxide electrical contact material mixture ratio calculate needed for metallic zinc,
Metallic additions and the consumption of silver, be divided into two parts by required silver, and a part is with the form of argent
Uniform alloy molten solution it is smelted into, so in being together placed in mid-frequency melting furnace with metallic zinc and metallic additions
Silver Zinc alloy powder is made by atomization；Another part weighs standby with the form of silver nitrate, and according to nitre
The consumption of acid silver calculates the use of the sodium hydroxide needed for silver nitrate and sodium hydroxide reaction generation silver oxide
Amount, weighs standby；Take silver nitrate water dissolution and be made into the silver nitrate solution of 20～40w/w%, by silver zinc
Alloyed powder and silver nitrate solution are placed in reactor, stir, and obtain silver nitrate and silver Zinc alloy powder
Suspension；Described metallic additions is one or more the group in bismuth, copper and indium
Close；
2) take sodium hydroxide water dissolution and be made into the sodium hydroxide solution of 10～30w/w%, join step
Rapid 1) stirring reaction in the suspension of gained, has precipitation to generate, filters, and obtains silver oxide and silver zinc closes
The composite powder of gold；
3) by the silver oxide of gained and silver kirsite composite powder be washed to neutrality, be dried, pulverize after
It is placed in oxygen-containing atmosphere oxidation, then pulverizes, obtain the Ag-ZnO composite powder containing additive；
4) by the Ag-ZnO composite powder isostatic pressing containing additive of gained, it is placed in oxygen-containing the most again
Atmosphere sinters, obtains the Ag-ZnO billet containing additive；
5) gained Ag-ZnO billet after band or wire rod are processed in hot extrusion through Rolling compund or
Drawing, more stamped processing or rivet driver processing, i.e. obtain lamellar or the rivet type silver-colored oxygen containing additive
Change zinc electrical contact material.
Processing method the most according to claim 1, it is characterised in that: step 1) in, need
In the silver zinc oxide electrical contact material of preparation, zinc oxide content is 8～18wt%, containing of metallic additions
Amount is 0.1～2.5wt%, and surplus is silver.
Processing method the most according to claim 1, it is characterised in that: step 1) in, described
The metal of melting in mid-frequency melting furnace together it is placed in argent form and metallic zinc and metallic additions
Silver accounts for the 10～80wt% of the total consumption of silver.
Processing method the most according to claim 1, it is characterised in that: step 1) in, take nitre
Acid silver water dissolution is made into the silver nitrate solution of 30～40w/w%.
Processing method the most according to claim 1, it is characterised in that: step 1) in, hydrogen-oxygen
Change consumption is silver nitrate consumption 4/17～the 5/17 of sodium.
Processing method the most according to claim 1, it is characterised in that: step 2) in, hydrogen-oxygen
The concentration changing sodium solution is 15～25w/w%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410844384.5A CN104493178B (en) | 2014-12-30 | 2014-12-30 | A kind of processing method of the silver zinc oxide electrical contact material containing additive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410844384.5A CN104493178B (en) | 2014-12-30 | 2014-12-30 | A kind of processing method of the silver zinc oxide electrical contact material containing additive |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104493178A CN104493178A (en) | 2015-04-08 |
| CN104493178B true CN104493178B (en) | 2016-09-14 |
Family
ID=52934678
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410844384.5A Active CN104493178B (en) | 2014-12-30 | 2014-12-30 | A kind of processing method of the silver zinc oxide electrical contact material containing additive |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104493178B (en) |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1524074A (en) * | 1976-07-12 | 1978-09-06 | Square D Co | Electrically conductive composite materials |
| US7842274B2 (en) * | 2006-03-31 | 2010-11-30 | Umicore, S.A. | Process for manufacture of silver-based particles and electrical contact materials |
| CN100562956C (en) * | 2007-08-29 | 2009-11-25 | 桂林电器科学研究所 | The manufacture method of high temperature resistant silver oxide contact tip material |
| CN101241804B (en) * | 2007-11-23 | 2010-04-21 | 中南大学 | A silver-ZnO electric contact and its making method |
| CN101944441B (en) * | 2010-08-31 | 2012-10-03 | 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 |
| CN102330008B (en) * | 2011-10-20 | 2013-02-27 | 福达合金材料股份有限公司 | Preparation method for silver zinc oxide electrical contact |
| CN102350502B (en) * | 2011-10-27 | 2013-01-09 | 福达合金材料股份有限公司 | Preparation method of silver-stannic oxide by using physical metallurgical coating method |
| 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 |
| 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 |
-
2014
- 2014-12-30 CN CN201410844384.5A patent/CN104493178B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN104493178A (en) | 2015-04-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103643074B (en) | A kind of preparation method of flaky AgSnO2 contact | |
| CN104498762B (en) | A kind of processing method of the siller tin oxide electric contact material containing additive | |
| CN101649399B (en) | Preparation method of tin-oxygen-silver electric contact material | |
| EP2538423B1 (en) | Method for preparing silver-based oxide electrical contact material with oriented particles | |
| CN105671401A (en) | Nanometer tungsten carbide silver contact material and manufacturing method | |
| CN103639232B (en) | A kind of preparation method of AgSnO2 wire | |
| CN105551859A (en) | Preparation method of flake silver graphite electrical contact material | |
| CN104593633B (en) | A kind of preparation method of the silver zinc oxide electrical contact material containing additive | |
| CN109500391A (en) | A kind of preparation method of high ductility silver zinc oxide contact material | |
| CN106636835A (en) | Preparation method for hard alloy containing intermetallic compound bonding phase | |
| CN103706795A (en) | Preparation method of atomized silver and zinc oxide electrical contact materials containing additives | |
| CN204842969U (en) | Silver - metal oxide electrical contact materials's preparation facilities and application | |
| CN109593981A (en) | A kind of preparation method for the sliver oxidized tin contactor materials improving ingot blank agglutinating property | |
| CN104493178B (en) | A kind of processing method of the silver zinc oxide electrical contact material containing additive | |
| CN103745842B (en) | A kind of Ag-based electrical contact material and preparation method thereof | |
| CN104493175B (en) | A kind of preparation method of the siller tin oxide electric contact material containing additive | |
| CN104525950A (en) | Method for preparing silver tin oxide electrical contact material | |
| CN105463240A (en) | Preparation method of copper-chromium electrical contact material | |
| CN109609794A (en) | A kind of preparation method of high ductility sliver oxidized tin contactor materials | |
| CN102031408A (en) | Method for preparing silver-based oxide electrical contact material with fibrous structure | |
| CN104493179A (en) | Preparation method of flakey or rivet-shaped silver and zinc oxide electrical contact material | |
| CN104498763B (en) | A kind of processing method of siller tin oxide oxide electrical contact material | |
| CN103194658A (en) | Preparation method of superfine SnO2 particle-reinforced electric contact material | |
| CN104493171A (en) | Preparation method of flakey silver and zinc oxide electrical contact material | |
| CN106498207A (en) | In-situ preparation contains Ni3The ceramic-metallic preparation method of the Binder Phase of Al |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |