CN103489665B - The preparation method of high breaking low-voltage electrical apparatus contact material, the preparation method of high breaking low-voltage electrical apparatus composite contact material - Google Patents
The preparation method of high breaking low-voltage electrical apparatus contact material, the preparation method of high breaking low-voltage electrical apparatus composite contact material Download PDFInfo
- Publication number
- CN103489665B CN103489665B CN201310460645.9A CN201310460645A CN103489665B CN 103489665 B CN103489665 B CN 103489665B CN 201310460645 A CN201310460645 A CN 201310460645A CN 103489665 B CN103489665 B CN 103489665B
- Authority
- CN
- China
- Prior art keywords
- contact material
- electrical apparatus
- voltage electrical
- low
- high breaking
- 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
Abstract
The preparation method of high breaking low-voltage electrical apparatus contact material, the preparation method of high breaking low-voltage electrical apparatus composite contact material, belong to the electric contact material technical field of low voltage electrical apparatus industry and white goods industry.The invention solves existing copper base contact and cannot meet the requirement of low-voltage electrical apparatus to ultimate short-circuit breaking capacity (Icu) and specified running and positioning (Ics).High breaking low-voltage electrical apparatus contact material is made up of the pure copper powder of diamond dust, copper alloy powder, anti-melting welding wild phase and surplus, adopts metallurgical method to make.Composite contact material is that silver-base alloy powder is composited by brush coating process and high breaking low-voltage electrical apparatus contact material sheet material.High breaking low-voltage electrical apparatus contact material has high ultimate short-circuit breaking capacity and specified running and positioning, and the present invention is used for the electric contact material of low voltage electrical apparatus industry and white goods industry.
Description
Technical field
The invention belongs to the electric contact material technical field of low voltage electrical apparatus industry and white goods industry, be exactly a kind of high breaking low-voltage electrical apparatus contact material and preparation method thereof specifically, and the high breaking adopting high breaking low-voltage electrical apparatus contact material to be composited as matrix and silver-base alloy, high-performance, joint silver environment-friendly type low-voltage electrical apparatus composite contact material, and the preparation method of composite contact material.
Background technology
At present in disclosed patent family and the contact material applied, a class take silver as the Ag-based electrical contact material of principal component, and another kind of is take copper as the copper-based electrical contact material of principal component.
Be that the Ag-based electrical contact material of principal component has good conductivity, thermal conductivity with silver, there is the characteristics such as contact resistance is little, oxidation resistance is strong, be widely used in low voltage electrical apparatus industry and be used as electric contact material, as contact materials such as siller tin oxide, Ag-ZnO, silver-colored nickel, silver-colored rare earths.But along with the development of national economy, low-voltage electrical apparatus is on the increase, silver consumption increases year by year, China and global silver shortage of resources and expensive, constrains the development of money base low-voltage electrical apparatus contact material.
Be that the copper-based electrical contact material of principal component has been successfully applied to low voltage electrical apparatus industry at present with copper, " copper base low voltage electric contact material " as described in the patent No. 94102452.0 applies nearly ten years on miniature circuit breaker, breaker of plastic casing, achieves good economic and social benefit.This contact to some extent solves anti-welding problems, but in prolonged application process, have also discovered its ultimate short-circuit breaking capacity (Icu) only have 25KA, limit and apply in the low-voltage electrical apparatus of ask for something high breaking capacity, application particularly in Novel plastic shell formula circuit breaker and small-sized high score circuit breaker, these novel circuit breaker volumes are less, and breaking capacity but increases substantially.
In addition, in order to save silver consuming amount and keep the electric property of contact, silver-copper composite contactor material also occurs thereupon.The common practice is compound on no-oxygen copper plate by the mode such as method hot rolling, blast by the silver based contact material of routine.Although this composite material decreases the consumption of silver, but there is a fatal defect, namely matrix no-oxygen copper plate does not possess anti-melting welding ability, the requirement of low-voltage electrical apparatus to ultimate short-circuit breaking capacity (Icu) and specified running and positioning (Ics) cannot be met, there is great potential safety hazard.
Summary of the invention
The object of the present invention is to provide high breaking low-voltage electrical apparatus contact material and preparation method, high breaking low-voltage electrical apparatus composite contact material and preparation method.High breaking low-voltage electrical apparatus contact material possesses high ultimate short-circuit breaking capacity (Icu) and specified running and positioning (Ics), this material not only can use as low-voltage electrical apparatus contact material separately, solve the weakness that current copper base contact breaking capacity is not high, meet the requirement of higher level low-voltage electrical apparatus.High breaking low-voltage electrical apparatus contact material and silver based contact material carry out compound to be prepared and has high breaking, high performance compound contact material, take into account the multiple requesting of excellent electrical properties, high breaking capacity and joint silver, to meet high-end electrical equipment and to save the requirement of silver-colored environmental protection.
High breaking low-voltage electrical apparatus contact material of the present invention by weight percentage by 0.01% ~ 10.0% diamond dust, 40% ~ 60% copper alloy powder, 0.05% ~ 15% anti-melting welding wild phase and surplus pure copper powder make.
Described copper alloy powder adopts water atomization process by 0.01% ~ 20% alloyed powder and 80% ~ 99.9% cathode copper by weight percentage, and (hydraulic atomized is alloyed powder and cathode copper are melted in a furnace, golden liquid after fusing must be overheated about 50 degree, then injects tundish.Start to start high-pressure hydraulic pump before golden liquid injects, allow high-pressure water mist gasifying device start workpiece.Golden liquid in tundish, through line, enters atomizer by leting slip a remark of the end of bag.Under the effect of the water under high pressure from atomizer, golden liquid is constantly broken into tiny drop, falls into the cooling fluid of device, and fast liquid is frozen into alloy powder.) make, alloyed powder is by a kind of or wherein several combination in silver, lanthanum, cerium, dysprosium, samarium, yttrium, ytterbium, zirconium, aluminium, chromium, tin, zinc, tellurium, nickel; When alloyed powder is composition, be mixed by any ratio between each component.Copper alloy powder forms high breaking and saves silver-colored environment-friendly type low-voltage electrical apparatus contact material third phase constituent element, substitute the cadmium element forbidden by RoHS Directive, play and improve electrical contact surface liquid phase and solid phase adhesive force, reduce the formation and spreading of contact surface and contact body crackle, finally reach the effect reducing electric arc etch.
High breaking low-voltage electrical apparatus contact material main conductive material is copper, and be the core constituent element of contact material, copper has good electric conductivity and thermal conductivity, is applicable to the matrix being applied to contact material.
Described anti-melting welding wild phase is a kind of or wherein several combination in lanthanum sesquioxide, cerium sesquioxide, Dysprosium trioxide, samarium sesquioxide, yttria, yttria, zinc oxide, cupric oxide, tin oxide, cadmium oxide, indium oxide, tungsten, molybdenum, vanadium, graphite, boron carbide, tungsten carbide, carborundum, when anti-melting welding wild phase is composition, be mixed by any ratio between each component.Save silver-colored environment-friendly type low-voltage electrical apparatus contact material the 4th phase constituent element as high breaking, play the ability significantly improving contact resistance fusion welding, increase electrical contact endurance.
The purity of described diamond dust is greater than 99% (quality), particle diameter 0.1 μm ~ 5 μm.
The granularity of described copper alloy powder is less than 200 orders.
The preparation method of high breaking low-voltage electrical apparatus contact material carries out in the steps below:
Step one, by the pure copper powder of the diamond dust of 0.01% ~ 10.0%, 40% ~ 60% copper alloy powder, 0.05% ~ 15% anti-melting welding wild phase and surplus mix, be placed at ball milling 6h ~ 12h in the high energy ball mill under argon shield, obtain mixed powder;
Bulky grain copper alloy powder and pure copper powder are pulverized by ball milling, make bortz powder and pure copper powder, copper alloy powder and anti-melting welding wild phase particle diameter close to and mix, thus overcome the resistance fusion welding difference that composition skewness causes.
Step 2, mixed powder cold isostatic pressing process step one obtained make cylindric stock, and isostatic cool pressing system is: pressure is 100 ~ 280MPa, pressurize 5 ~ 10min;
Step 3, stock carry out sintering processes under vacuo, sintering temperature 700 ~ 1300 DEG C, temperature retention time 30 ~ 120min;
Stock hot extrusion molding at 700 ~ 1200 DEG C after step 4, sintering, then be rolled or drawing processing, be then machined into required contact shape, namely obtain high breaking low-voltage electrical apparatus contact material.
It is copper that high breaking saves silver-colored environment-friendly type low-voltage electrical apparatus contact material main conductive material, and be the core constituent element of contact material, copper has good electric conductivity and thermal conductivity, is applicable to the matrix being applied to contact material.
Second-phase constituent element is diamond.Diamond is the material that occurring in nature thermal conductivity is the highest, and thermal conductivity reaches 138.16Wm
-1k
-1, there is the characteristic of fusing point high (3700 DEG C), high rigidity simultaneously.The present invention is added by second-phase constituent element bortz powder, except playing the effect of arc resistant etch and anti-contact melting welding, also plays dispersion-strengtherning skeleton, makes contact material under electrical contact and arcing, still have higher hardness and higher fusing point.Further research shows, diamond is a kind of desirable reducing agent, no matter being the diamond of elemental stage or the carbon monoxide of conversion after arcing burning is all stronger reducing agent, the copper oxide reduction that electrical contact surface generates can be become cuprous oxide or metal simple-substance copper, ensure that the conductivity that contact material is good.Meanwhile, accelerate the heat conduction that produced by electric arc to crane span structure because adamantine thermal conductive resin serves, reduce the effect of contact surface temperature, meet the requirement of electrical equipment type approval test temperature rise.
Third phase constituent element is some metallic elements.These metallic elements and Copper substrate form alloy, effect in contact material mainly plays surface tension and wetting action at electrical contact surface, reach the object reducing electric arc etch, and play from electrical contact surface by the liquid metal pool formed electric arc energy, regulate the distribution of each constituent element in contact material and flowing and compound form to control, reach the object reducing contact melting welding.
4th phase constituent element is oxide, refractory metal or carbide.The key effect added of these oxides, refractory metal or carbide is the weld strength of melting welding under reduction contact arcing, greatly improves the resistance fusion welding of contact material.Have in addition and increase the viscosity of electrical contact surface by the liquid state of molten pool metal formed under electric arc energy, reduce liquid metal and splash thus the effect increasing electric life.Although when contact repeatedly break-make, oxide or carbide can be deposited on contact surface and cause resistance to raise, but the gas burnt under arcing due to the diamond particles of contact electric interface can remove contact surface deposit, thus ensure that contact material clean surface and good conductivity.4th phase constituent element is the key significantly improving contact material breaking capacity.
Three, the 4th phase constituent element add the breaking capacity drastically increasing material of the present invention, and overcome the pollution of cadmium to environment.High breaking low-voltage electrical apparatus contact material ultimate short-circuit breaking capacity is more than 70KA.
Each phase constituent element acting in conjunction increases substantially contact resistance fusion welding, namely improves breaking capacity.
In the present invention high breaking low-voltage electrical apparatus composite contact material be by by weight percentage by 0.01% ~ 10.0% diamond dust, 40% ~ 60% copper alloy powder, 0.05% ~ 15% anti-melting welding wild phase and surplus pure copper powder be processed into sheet material by powder metallurgy process, then silver-base alloy powder is composited by brush coating process and sheet material; Described copper alloy powder adopts water atomization process to make by 0.01% ~ 20% alloyed powder and 80% ~ 99.9% cathode copper by weight percentage, alloyed powder is by a kind of or wherein several combination in silver, lanthanum, cerium, dysprosium, samarium, yttrium, ytterbium, zirconium, aluminium, chromium, tin, zinc, tellurium, nickel, when alloyed powder is composition, be mixed by any ratio between each component; Described anti-melting welding wild phase is a kind of or wherein several combination in lanthanum sesquioxide, cerium sesquioxide, Dysprosium trioxide, samarium sesquioxide, yttria, yttria, zinc oxide, cupric oxide, tin oxide, cadmium oxide, indium oxide, tungsten, molybdenum, vanadium, graphite, boron carbide, tungsten carbide, carborundum, when anti-melting welding wild phase is composition, be mixed by any ratio between each component.
Described silver-base alloy powder is made up of 0.05% ~ 15% additive and 85% ~ 99.95% fine silver powder by weight percentage; Additive is a kind of or wherein several combination in tungsten, molybdenum, niobium, copper, nickel, tellurium, lanthanum, cerium, dysprosium, samarium, yttrium, ytterbium, zirconium, lanthanum sesquioxide, cerium sesquioxide, Dysprosium trioxide, samarium sesquioxide, yttria, yttria, zinc oxide, tin oxide, indium oxide, cupric oxide, tungsten carbide, boron carbide, carborundum, diamond, graphite.When additive is composition, be mixed by any ratio between each component.
Described high breaking low-voltage electrical apparatus composite contact material preparation method carries out in the steps below:
One, by the diamond dust of 0.01% ~ 10.0%, 40% ~ 60% copper alloy powder, the pure copper powder mixing of 0.05% ~ 15% anti-melting welding wild phase and surplus, be placed at ball milling 6h ~ 12h in the high energy ball mill under argon shield, cylindric stock is made by cold isostatic pressing process, isostatic cool pressing system is: pressure is 100 ~ 280MPa, pressurize 5 ~ 10min, stock carries out sintering processes under vacuo, sintering temperature 700 ~ 1300 DEG C, temperature retention time 30 ~ 120min, stock after sintering is hot extrusion molding at 700 ~ 1200 DEG C, be rolled into sheet material again, then blasting treatment plate surface,
Two, silver-base alloy powder absolute ethyl alcohol or distilled water are modulated into pulpous state and obtain silver alloy slurry, then be coated on treated plate surface, be placed in argon gas or nitrogen atmosphere and carry out just sintering, first sintering temperature is 700 DEG C ~ 960 DEG C, and just the temperature retention time of sintering is 5 ~ 30min;
Three, continue after cooling to brush silver alloy slurry in the one side of brushing silver alloy, and carry out at 500 DEG C ~ 800 DEG C the knot 5 ~ 30min that reburns, repeat to brush and sintering process again, until reach contact material silver alloy thickness requirement;
Four, then cold rolling or under argon gas or nitrogen atmosphere hot rolling, make it to reach specific thickness;
Five, the material after rolling is placed in argon gas or nitrogen atmosphere carries out whole sintering, and whole sintering temperature is 350 DEG C ~ 500 DEG C, and temperature retention time is 15 ~ 30min; Namely high breaking low-voltage electrical apparatus composite contact material is obtained.
Silver powder in the mixed-powder slurry that each brushing adopts can be different from additive ratio.Time different, graded composite contact material can be made, thus adapt to demand in particular cases.
High breaking is adopted to save silver-colored environment-friendly type low-voltage electrical apparatus contact material as matrix by the certain thickness silver-base alloy layer of spread coating compound, formation high breaking saves, high-performance silver environment-friendly type low-voltage electrical apparatus composite contact material, its advantage is thoroughly to overcome the specified running and positioning of conventional silver cuprum composite contact material and the low shortcoming of ultimate short-circuit breaking capacity, prepared contact in normal conditions of use electrical property is equal to silver-based contact, specified running and positioning and ultimate short-circuit breaking capacity are then equal to high breaking and save silver-colored environment-friendly type low-voltage electrical apparatus contact material, when low-voltage electrical apparatus in normal working conditions, what work is silver-base alloy layer, so this material has the performance identical with silver-based contact under this operating mode, and time under specified operation short circuit and limit short circuiting work condition, ag alloy layer will be consumed, no longer cut any ice, what at this moment play breaking capacity is then matrix, namely high breaking saves silver-colored environment-friendly type low-voltage electrical apparatus contact material, therefore composite material possesses with this understanding and saves the identical specified running and positioning of silver-colored environment-friendly type low-voltage electrical apparatus contact material and ultimate short-circuit breaking capacity with high breaking, thus really achieves the object of joint silver and environmental protection under the prerequisite not reducing electrical property.Composite contact ultimate short-circuit breaking capacity is more than 70KA.
Embodiment
Below in conjunction with embodiment, the present invention is described in detail again.
Embodiment one: in present embodiment, high breaking joint low-voltage electrical apparatus contact material is obtained by following step:
Step one, by 37.7kg electrolytic copper powder, 60kg copper alloy powder (copper alloy powder adopts water atomization process to make by 0.80% lanthanum, 0.35% zirconium, 0.65% aluminium and surplus cathode copper), tungsten powder 1.0kg, with 1.3kg bortz powder under argon shield on high energy ball mill ball milling 8 hours, obtain mixed powder;
Step 2, obtained mixed-powder is put into rubber mold makes diameter 100mm cylindric stock by the method for isostatic cool pressing; Isostatic cool pressing system is: pressure: 280MPa, the dwell time: 10min;
Step 3, stock carry out sintering processes under vacuum, sintering temperature 1220 DEG C, temperature retention time 180min;
Stock hot extrusion molding at 900 DEG C after step 4, sintering, obtains the extrudate that thickness is 4mm;
Step 5, by extrudate after being rolled down to given size, carry out punching press by product size, obtain contact finished product.
The performance of the high breaking joint low-voltage electrical apparatus contact of present embodiment: density 8.61g/cm
3, resistivity 2.24 μ Ω cm, hardness 900Mpa, ultimate short-circuit breaking capacity is 70kA, and specified running and positioning is 52.5kA.
Embodiment two: in present embodiment, high breaking joint low-voltage electrical apparatus contact material is obtained by following step:
Step one, by 37.7kg electrolytic copper powder, 60kg copper alloy powder (copper alloy powder adopts water atomization process to make by the copper of 0.80% lanthanum, 0.50% aluminium and surplus), 0.8kg samarium sesquioxide and 1.5kg bortz powder under argon shield on high energy ball mill ball milling 10 hours, obtain mixed powder;
Step 2, obtained mixed-powder is put into rubber mold makes diameter 100mm cylindric stock by the method for isostatic cool pressing, isostatic cool pressing system is: pressure is 250MPa, pressurize 10min;
Step 3, stock carry out sintering processes under vacuum, sintering temperature 1150 DEG C, temperature retention time 210min;
Stock hot extrusion molding at 950 DEG C after step 4, sintering, obtains the extrudate that thickness is 4mm;
Step 5, extrudate is rolled down to given size after, carry out punch process by product size, obtain contact finished product.
The performance of the high breaking joint low-voltage electrical apparatus contact of present embodiment: density 8.53g/cm
3, resistivity 2.28 μ Ω cm, hardness 890Mpa, ultimate short-circuit breaking capacity is 75kA, and specified running and positioning is 56kA.
The electrical property of " the copper base low voltage electric contact material " of contrast prepared by the patent No. 94102452.0, with diamond 1.3%, cadmium 1.5%, the composition of copper surplus consists of example, and its performance is density: 8.56g/cm
3, resistivity: 2.24 μ Ω cm, hardness: 860Mpa, ultimate short-circuit breaking capacity is 25kA, and specified running and positioning is 18kA.And the contact material performance prepared by the embodiment of the present invention 2 is: density: 8.53g/cm
3, resistivity: 2.28 μ Ω cm, hardness: 930Mpa, ultimate short-circuit breaking capacity is 75kA, and specified running and positioning is 56kA.The breaking capacity of contact material of the present invention is far above " copper base low voltage electric contact material " described in the patent No. 94102452.0 as can be seen here, maintains lower resistance and higher hardness simultaneously, and meets the requirement of European Union RoHs instruction.Can be applied in the low-voltage electrical apparatus that breaking capacity is had higher requirements.
Embodiment three: in present embodiment, high breaking joint low-voltage electrical apparatus contact material is obtained by following step:
Step one, by 38.7kg electrolytic copper powder, 60kg copper alloy powder (copper alloy powder adopts water atomization process to make by the copper of 0.40% lanthanum, 0.80% tellurium and surplus), 0.3kg Dysprosium trioxide, 0.5kg tungsten powder and 0.5kg bortz powder under argon shield on high energy ball mill ball milling 12 hours, obtain mixed powder;
Step 2, obtained mixed-powder is put into rubber mold makes diameter 100mm cylindric stock by the method for isostatic cool pressing, isostatic cool pressing system is: pressure is 280MPa, pressurize 10min;
Step 3, stock carry out sintering processes under vacuo, sintering temperature 1250 DEG C, temperature retention time 120min;
Stock hot extrusion molding at 950 DEG C after step 4, sintering, obtains the extrudate that thickness is 4mm;
Step 5, by extrudate rolling or drawing processing after, carry out machining by product size.
The performance of the high breaking joint low-voltage electrical apparatus contact of present embodiment: density 8.55g/cm
3, resistivity 2.26 μ Ω cm, hardness 850Mpa, ultimate short-circuit breaking capacity is 72kA, and specified running and positioning is 54kA.
Embodiment four: in present embodiment, high breaking joint low-voltage electrical apparatus contact material is obtained by following step:
Step one, by 38.9kg electrolytic copper powder, 60kg copper alloy powder (copper alloy powder is 0.4% lanthanum, the copper of 0.4% zirconium and surplus adopt water atomization process to make), 0.3kg Dysprosium trioxide, 0.5kg boron carbide and 0.3kg bortz powder under argon shield on high energy ball mill ball milling 12 hours, obtain mixed powder;
Step 2, obtained mixed-powder is put into rubber mold makes diameter 100mm cylindric stock by the method for isostatic cool pressing, isostatic cool pressing system is: pressure is 280MPa, pressurize 5min;
Step 3, stock carry out sintering processes under vacuo, sintering temperature 1250 DEG C, temperature retention time 120min;
Stock hot extrusion molding at 930 DEG C after step 4, sintering, obtains the extrusion plate that specific thickness is 4mm;
Step 5, by extrudate rolling or drawing processing after, carry out machining by product size.
The performance of the high breaking joint low-voltage electrical apparatus contact of present embodiment: density 8.58g/cm
3, resistivity 2.25 μ Ω cm, hardness 880Mpa, ultimate short-circuit breaking capacity is 75kA, and specified running and positioning is 56kA.
Embodiment five: in present embodiment, high breaking is saved silver-colored environment-friendly type low-voltage electrical apparatus composite contact material and obtained by following step:
Step one, be 1 ~ 1.5 μm of silver powder by the average grain diameter of 9.0kg, the 1.0kg tin oxide of same particle diameter mixes, add 10L distilled water and stir and in ultrasonic disperser, disperse 5min clock, make silver-tin alloy slurry.
After step 2, surface high breaking prepared by embodiment two being saved silver-colored environment-friendly type low-voltage electrical apparatus contact material sheet material carry out blasting treatment, brush uniform for silver-tin alloy slurry thereon, brushing thickness is 10 ~ 15 μm, dries at 105 DEG C.
Step 3, by the sheet material after drying, be placed on special shelf, put into sintering furnace and carry out just sintering under argon shield.First sintering temperature is 850 DEG C, and temperature retention time is 10min.
Continue after the band cooling of step 4, just sintering to brush uniform for silver-tin alloy slurry on the surface of brushing silver alloy, brushing thickness is 10 ~ 15 μm, dries at 105 DEG C.
Step 5, by dry after sheet material, be placed on special shelf, put into sintering furnace and sinter again under argon shield.Sintering temperature is 750 DEG C again, and temperature retention time is 10min.
Step 6, repetition step 4 and step 5, make silver close layer thickness and account for 20% of gross thickness.
Step 7, composite board is cold rolling, be rolled down to required thickness.
Step 8, after cold rolling, will carry out whole sintering by composite material, whole sintering temperature is 450 DEG C, and temperature retention time is 30min.
Composite material after step 9, eventually sintering can be the shape of customer requirement with punch press stamping-out.
The performance of the high breaking joint low-voltage electrical apparatus composite contact of present embodiment: global density 8.87g/cm
3, resistivity 2.06 μ Ω cm, hardness 700Mpa; The electrical performance indexes such as electric life, temperature rise is equal to and siller tin oxide 10 contact, and ultimate short-circuit breaking capacity is 75kA, and specified running and positioning is 56kA, is applicable to alternative siller tin oxide 10 contact material.
Embodiment six: in present embodiment, high breaking is saved silver-colored environment-friendly type low-voltage electrical apparatus composite contact material and obtained by following step:
Step one, high breaking prepared by embodiment three saved silver-colored environment-friendly type low-voltage electrical apparatus contact material plate rolling and become thickness to be the sheet material of 1.0mm, selected one side carries out sandblasting and clean as composite surface.
Step 2, be that 1 ~ 1.5 μm of silver powder mixes with 0.2kg, 0.3kg, 0.4kg, 0.5kg, 0.6kg nickel powder of same particle diameter respectively by 1.8kg, 1.7kg, 1.6kg, 1.5kg, 1.4kg average grain diameter, make the silver-nickel powder that 5 parts of nickel content are respectively 10%, 15%, 20%, 25%, 30%, add 200mL absolute ethyl alcohol and stirring respectively and disperse 5 minutes in ultrasonic wave separating apparatus, making 5 parts of silver-nickel slurries.
Step 3, be first that uniform brushing of 10% silver-nickel slurry is saved on silver-colored to be composite of environment-friendly type low-voltage electrical apparatus contact material at the high breaking of embodiment three after surface sand-blasting process by nickel content, brushing thickness is 10 ~ 15 μm, dries at 105 DEG C.
Step 4, by the sheet material after drying, be placed on special shelf, put into sintering furnace and carry out just sintering under argon shield.First sintering temperature is 800 DEG C, and temperature retention time is 15 minutes.
Be that 15% silver-nickel slurry is brushed on sheet material composite surface uniformly by nickel content after step 5, cooling, brushing thickness is 10 ~ 15 μm, dries at 105 DEG C.
Step 6, by dry after sheet material, be placed on special shelf, put into sintering furnace and sinter again under argon shield.Sintering temperature is 750 DEG C again, and temperature retention time is 10 minutes.
Step 7, repetition step 5 and step 6, the silver-nickel slurry being 20%, 25%, 30% respectively by nickel content by nickel content order is from low to high brushed on composite surface.Thus form the gradient composites that in silver-nickel layer, nickel content raises successively from composite surface, be equivalent to be formed from composite bed silver-colored nickel 10, silver-colored nickel 15, silver-colored nickel 20, silver-colored nickel 25, silver-colored nickel 30 composition five layer thicknesses be respectively 10 ~ 15 μm of gradient ag alloy layers.
Step 8, composite board is cold rolling, thickness required for rolling.
Step 9, after cold rolling, will carry out whole sintering by composite material, whole sintering temperature is 420 DEG C, and temperature retention time is 30 minutes.
The performance of the high breaking joint low-voltage electrical apparatus composite contact of present embodiment: global density 8.75g/cm
3, resistivity 2.16 μ Ω cm, hardness 720Mpa, ultimate short-circuit breaking capacity is 72kA, and specified running and positioning is 54kA.
Claims (2)
1. the preparation method of high breaking low-voltage electrical apparatus contact material, is characterized in that the preparation method of high breaking low-voltage electrical apparatus contact material carries out in the steps below:
Step one, by the pure copper powder of the diamond dust of 0.01% ~ 10.0%, 40% ~ 60% copper alloy powder, 0.05% ~ 15% anti-melting welding wild phase and surplus mix, be placed at ball milling 6h ~ 12h in the high energy ball mill under argon shield, obtain mixed powder;
Step 2, mixed powder cold isostatic pressing process step one obtained make cylindric stock, and isostatic cool pressing system is: pressure is 100 ~ 280MPa, pressurize 5 ~ 10min;
Step 3, stock carry out sintering processes under vacuo, sintering temperature 700 ~ 1300 DEG C, temperature retention time 30 ~ 120min;
Stock hot extrusion molding at 700 ~ 1200 DEG C after step 4, sintering, then be rolled or drawing processing, be then machined into required contact shape, namely obtain high breaking low-voltage electrical apparatus contact material.
2. high breaking low-voltage electrical apparatus composite contact material preparation method, is characterized in that described high breaking low-voltage electrical apparatus composite contact material preparation method carries out in the steps below:
One, by the diamond dust of 0.01% ~ 10.0%, 40% ~ 60% copper alloy powder, the pure copper powder mixing of 0.05% ~ 15% anti-melting welding wild phase and surplus, be placed at ball milling 6h ~ 12h in the high energy ball mill under argon shield, cylindric stock is made by cold isostatic pressing process, isostatic cool pressing system is: pressure is 100 ~ 280MPa, pressurize 5 ~ 10min, stock carries out sintering processes under vacuo, sintering temperature 700 ~ 1300 DEG C, temperature retention time 30 ~ 120min, stock after sintering is hot extrusion molding at 700 ~ 1200 DEG C, be rolled into sheet material again, then blasting treatment plate surface,
Two, silver-base alloy powder absolute ethyl alcohol or distilled water are modulated into pulpous state and obtain silver alloy slurry, then be coated on treated plate surface, be placed in argon gas or nitrogen atmosphere and carry out just sintering, first sintering temperature is 700 DEG C ~ 960 DEG C, and just the temperature retention time of sintering is 5 ~ 30min;
Three, continue after cooling to brush silver alloy slurry in the one side of brushing silver alloy, and carry out at 500 DEG C ~ 800 DEG C the knot 5 ~ 30min that reburns, repeat to brush and sintering process again, until reach contact material silver alloy thickness requirement;
Four, then cold rolling or under argon gas or nitrogen atmosphere hot rolling, make it to reach specific thickness;
Five, the material after rolling is placed in argon gas or nitrogen atmosphere carries out whole sintering, and whole sintering temperature is 350 DEG C ~ 500 DEG C, and temperature retention time is 15 ~ 30min; Namely high breaking low-voltage electrical apparatus composite contact material is obtained.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310460645.9A CN103489665B (en) | 2013-10-08 | 2013-10-08 | The preparation method of high breaking low-voltage electrical apparatus contact material, the preparation method of high breaking low-voltage electrical apparatus composite contact material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310460645.9A CN103489665B (en) | 2013-10-08 | 2013-10-08 | The preparation method of high breaking low-voltage electrical apparatus contact material, the preparation method of high breaking low-voltage electrical apparatus composite contact material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103489665A CN103489665A (en) | 2014-01-01 |
| CN103489665B true CN103489665B (en) | 2016-04-27 |
Family
ID=49829817
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310460645.9A Active CN103489665B (en) | 2013-10-08 | 2013-10-08 | The preparation method of high breaking low-voltage electrical apparatus contact material, the preparation method of high breaking low-voltage electrical apparatus composite contact material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103489665B (en) |
Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104051053B (en) * | 2014-06-13 | 2016-06-01 | 江阴电工合金股份有限公司 | high-strength and high-conductivity copper tin alloy contact line and its preparation method |
| CN104064253A (en) * | 2014-06-20 | 2014-09-24 | 哈尔滨东大高新材料股份有限公司 | Copper-based contact material applied to lower-voltage apparatus and preparation method of copper-based contact material |
| CN104128601B (en) * | 2014-08-18 | 2016-09-07 | 黑龙江中勋机电科技发展有限公司 | Prealloy method produces copper-based electric contact material |
| CN104439260B (en) * | 2014-11-28 | 2016-06-29 | 鞍钢实业微细铝粉有限公司 | A kind of manufacture method of two-nozzle atomization composite granule |
| CN105018768B (en) * | 2015-07-31 | 2017-05-03 | 陕西斯瑞新材料股份有限公司 | High-performance copper chromium contactor material and preparing method thereof |
| CN105938763A (en) * | 2016-06-21 | 2016-09-14 | 哈尔滨东大高新材料股份有限公司 | Dispersion-strengthened copper-based contact material added with La2O3-MoSi2, and preparation method of material |
| CN106057527A (en) * | 2016-06-27 | 2016-10-26 | 温州中希电工合金有限公司 | Laminated silver-copper-brazing-filler-metal composite electrical contact material prepared by coating method and preparation method thereof |
| CN106057526A (en) * | 2016-06-27 | 2016-10-26 | 温州中希电工合金有限公司 | Laminated silver-copper-brazing-filler-metal three-composite electrical contact material manufactured by coating and sleeving method and manufacturing method thereof |
| CN106067391B (en) * | 2016-06-27 | 2019-12-20 | 温州中希电工合金有限公司 | Laminar silver-copper-brazing three-composite electrical contact material prepared by atomization method |
| CN106449190A (en) * | 2016-06-27 | 2017-02-22 | 温州中希电工合金有限公司 | Layered silver-copper brazing three-composite electrical contact material and preparation method thereof |
| CN106683914B (en) * | 2017-02-25 | 2018-10-19 | 河北工业大学 | A kind of low-voltage electrical apparatus copper-based electrical contact material and preparation method thereof |
| CN110144506B (en) * | 2019-07-04 | 2021-01-08 | 广西大学 | Preparation method of diamond copper-based composite material |
| CN110444414B (en) * | 2019-07-22 | 2021-11-02 | 国网内蒙古东部电力有限公司电力科学研究院 | Copper-based chromium niobium electrical contact material, preparation method thereof, copper-based electrical contact and air type high-voltage isolating switch |
| CN110976887B (en) * | 2019-12-17 | 2022-02-11 | 哈尔滨东大高新材料股份有限公司 | AgWC (T)/CuC (X) contact material and preparation method thereof |
| CN111575527A (en) * | 2020-05-29 | 2020-08-25 | 河北工业大学 | Preparation method of composite contact material for high-breaking low-voltage electric appliance |
| CN112281011A (en) * | 2020-10-29 | 2021-01-29 | 桂林金格电工电子材料科技有限公司 | CuAl for high-voltage direct-current relay2O3Method for preparing composite material |
| CN115491537A (en) * | 2022-09-23 | 2022-12-20 | 河南工业大学 | High-thermal-conductivity diamond/copper composite material and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1279298A (en) * | 1999-07-03 | 2001-01-10 | 秦惠保 | Cu-base powder alloy as electric contact material |
| CN101054654A (en) * | 2006-04-11 | 2007-10-17 | 中国科学院金属研究所 | High-strength high-conductivity oxidation-resisting low-silver copper-base alloy and preparation thereof |
| CN101885060A (en) * | 2010-06-22 | 2010-11-17 | 上海中希合金有限公司 | High-performance copper-diamond electrical contact material and preparation process thereof |
| CN102294485A (en) * | 2011-08-25 | 2011-12-28 | 哈尔滨东大高新材料股份有限公司 | composite electric contact material and preparation method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1055732C (en) * | 1996-03-12 | 2000-08-23 | 阚洁清 | Copper-base powder alloy material for electric contact |
-
2013
- 2013-10-08 CN CN201310460645.9A patent/CN103489665B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1279298A (en) * | 1999-07-03 | 2001-01-10 | 秦惠保 | Cu-base powder alloy as electric contact material |
| CN101054654A (en) * | 2006-04-11 | 2007-10-17 | 中国科学院金属研究所 | High-strength high-conductivity oxidation-resisting low-silver copper-base alloy and preparation thereof |
| CN101885060A (en) * | 2010-06-22 | 2010-11-17 | 上海中希合金有限公司 | High-performance copper-diamond electrical contact material and preparation process thereof |
| CN102294485A (en) * | 2011-08-25 | 2011-12-28 | 哈尔滨东大高新材料股份有限公司 | composite electric contact material and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103489665A (en) | 2014-01-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103489665B (en) | The preparation method of high breaking low-voltage electrical apparatus contact material, the preparation method of high breaking low-voltage electrical apparatus composite contact material | |
| CN101834077B (en) | Method for manufacturing pure copper/copper chromium alloy composite contact material | |
| CN101649401B (en) | Ag-Ni-oxide electrical contact material and preparation method thereof | |
| CN101345142B (en) | Electrical contact material with Ti3SiC2 multi-layer compound structure and preparation technique | |
| CN102290261B (en) | Silver copper based metal oxide electrical contact material containing adding elements and preparation method thereof | |
| CN102294485B (en) | Composite electric contact material and preparation method thereof | |
| CN102747239B (en) | Manufacturing method for copper-tungsten alloy of a tungsten framework | |
| CN112658243B (en) | Preparation method of CuW/CuCr integral contact | |
| CN106057526A (en) | Laminated silver-copper-brazing-filler-metal three-composite electrical contact material manufactured by coating and sleeving method and manufacturing method thereof | |
| CN102268583A (en) | Method for preparing silver tin oxide electrical contact material | |
| CN101127253B (en) | Silver nickel electricity-conductive ceramic electrical contact material and its production method | |
| CN112620640B (en) | Preparation method of AgNi electrical contact material based on recycling of AgC scrap | |
| CN106067391B (en) | Laminar silver-copper-brazing three-composite electrical contact material prepared by atomization method | |
| CN101345141A (en) | Electrical contact material with Ti3SiC2 three-layer compound structure and preparation technique | |
| CN105483598A (en) | Silver-copper base composite contact material and preparing technology | |
| CN103589897A (en) | Preparation method of compound electric contact material containing silver, metal oxide and tungsten and product thereof | |
| CN111468719B (en) | Silver tin oxide sheet-shaped electrical contact and preparation method thereof | |
| CN106449190A (en) | Layered silver-copper brazing three-composite electrical contact material and preparation method thereof | |
| CN103045895A (en) | Electric contact material and preparation method thereof | |
| CN113122745B (en) | Preparation method of silver tin oxide composite electric contact material | |
| CN102044347A (en) | Preparation method and products of silver-copper-nickel-ceramic alloy contact material with high welding resistance | |
| CN102031409B (en) | Silver-boron nitride-cerium switch apparatus contact material and preparation method thereof | |
| CN103589898B (en) | Preparation method of compound electric contact material containing silver, metal oxide and tungsten carbide and product thereof | |
| CN100487839C (en) | Silver-economizing low-voltage electrical-appliance contact materials | |
| CN1124353C (en) | Copper-tungsten carbide contact material |
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 |