CN102299016B - A kind of method of straight forming silver-base alloy contact - Google Patents
A kind of method of straight forming silver-base alloy contact Download PDFInfo
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Abstract
A kind of method of straight forming silver-base alloy contact, the first proportioning components according to money base contact is by material powder Homogeneous phase mixing, then mixed-powder is inputted the powder feed system of cold spraying system, adopt normal temperature or spray through the gas of heating, material powder is under the effect of gases at high pressure, collision Copper substrate generation plastic deformation, and then be deposited on copper base-plates surface formation ag-based contact material, finally the ag-based contact material of formation is directly used or use after 30-60 minute 850-950 DEG C of annealing, the present invention saves ag material, overcome the high temperature deformation of copper pedestal, improve the fail safe of the course of work, be suitable for on-line machining, save spraying cost.
Description
Technical field
The present invention relates to low-tension switch electric appliance slider material technical field, be specifically related to a kind of method of straight forming silver-base alloy contact.
Background technology
Contact material is a kind of basic industrial component had a large capacity and a wide range, and the task of burden on-off electrical control circuit and load circuit current, its material determines the connecting-disconnecting function of switch and the reliability of electrical contact.At present, in low-tension switch electric appliance, the important slider material of a class is silver-base alloy contact material, specifically comprises silver-colored nickel, silver-colored tungsten, silver-colored tungsten carbide, silver-colored graphite etc.Silver is a kind of rare precious metal, reaches joint silver have important economic implications and scientific value for silver-based electric contact material in manufacturing process.
At present, the production of silver-base alloy contact material mainly contains high temperature sintering and infiltration method.Wherein, high-temperature sintering process is mixed by several metal (comprising carbon or carbide constituent element), afterwards high-temperature heating densification in reduction or vacuum atmosphere.Infiltration method be by other constituent element in addition to silver through or shaping without high temperature sintering, then silver is melted, in the skeleton making silver-colored liquation infiltrate other constituent element under high pressure or vacuum or powder, after coagulation form alloy contact material.But these two kinds of processes all will at high temperature long-time heating, causes the volatilization loss of silver, sometimes also through follow-up pressing process as extruding, rolling, wire drawing and riveter follow closely operation, will cause a large amount of clout.The money base contact completed also will adopt money base solder just can be welded on copper pedestal, and these processes consume a large amount of noble silver.
Summary of the invention
In order to overcome the shortcoming of above-mentioned prior art, the object of the present invention is to provide a kind of method of straight forming silver-base alloy contact, saving ag material, overcome the high temperature deformation of copper pedestal, improve the fail safe of the course of work, be suitable for on-line machining, save spraying cost.
In order to achieve the above object, the technical scheme that the present invention takes is:
A method for straight forming silver-base alloy contact, comprises the following steps:
The first step, according to the proportioning components of money base contact by material powder Homogeneous phase mixing, the composition of ag-based contact material comprises silver, the carbon of 0-20%, the nickel of 0-50%, the iron of 0-40%, the tungsten of 0-60%, the tungsten carbide of 0-60% that mass percent is 40-95%, the existence form of carbon is graphite, carbon black, carbon pipe or their mixture, the granularity of material powder is 0.1-150 μm
Second step, mixed-powder is inputted the powder feed system of cold spraying system, adopt normal temperature or spray through the gas of heating, the gas temperature of heating is 100 ~ 600 DEG C, material powder, under the effect of 1.5 ~ 3.5Mpa gases at high pressure, collides Copper substrate generation plastic deformation, and then is deposited on copper base-plates surface formation ag-based contact material, gas is air, industrial nitrogen or technical pure argon gas
Described cold spraying system comprises high-pressure air source, gas heater, high pressure powder feed device, gas regulation control system and spray gun, high-pressure air source is communicated with the input of gas regulation control system, first of gas regulation control system exports and is communicated with the rear portion mixing chamber of spray gun through gas heater, second of body regulation and control system exports and is communicated with the rear portion mixing chamber of spray gun through high pressure powder feed device, spray gun adopts scaling type Lavalle spray gun
3rd step, directly uses the ag-based contact material of formation or uses after 30-60 minute 850-950 DEG C of annealing.
Know-why of the present invention is:
The gases at high pressure that high-pressure air source produces enter high pressure powder feed device and gas heater respectively after gas regulation control system, air-flow subsequently after silver-based powder grain flow and preheating enters the rear portion mixing chamber of spray gun, scaling type Lavalle spray gun is entered through conduit after mixing, working gas drives particle to produce medium at a high speed, 100 ~ 600 DEG C are preheating to by heater before entering jet pipe, through the convergent-divergent of spray gun, carrier gas temperature sharply reduces, pressure expand into normal pressure from 1.5 ~ 3.5Mpa, and form a kind of supersonic airstream drag interaction is produced to particle, Silver-based particles speed is finally made to reach critical speed 500 ~ 1000m/s required for cold spraying coating, clash into base material and strong plastic deformation occur and forms money base contact at Copper substrate surface deposition.
Because the present invention adopts cold spraying, there is following characteristics:
(1) cold spray process does not have high temperature, greatly reduces the volatilization of silver, and does not need packing pressure to process and welding process, reaches the object of joint silver.
(2) do not have too much heat to be delivered to the surface of Copper substrate, decrease thermal stress, thus overcome the high temperature deformation of copper pedestal.
(3) spraying process does not need high temperature heat source, greatly reduces the equipment cost of cold spraying, improves the fail safe of the course of work, is suitable for on-line machining.
(4) can reclaim in spraying process and again utilize coated powder, greatly having saved spraying cost.
Embodiment
Below in conjunction with embodiment, the present invention is described in detail.
Embodiment 1
A method for straight forming silver-base alloy contact, comprises the following steps:
The first step, according to the proportioning components of money base contact by material powder Homogeneous phase mixing, it is the silver of 40-70%, the tungsten of 30-60% that the composition of ag-based contact material comprises mass percent, and the granularity of tungsten powder is 1-20 μm, and the granularity of silver powder is 10-150 μm,
Second step, mixed-powder is inputted the powder feed system of cold spraying system, adopt normal temperature or spray through the gas of heating, the gas temperature of heating is 500 ~ 550 DEG C, material powder, under the effect of 1.5 ~ 2.0Mpa gases at high pressure, collides Copper substrate generation plastic deformation, and then is deposited on copper base-plates surface formation ag-based contact material, gas is industrial nitrogen
Described cold spraying system comprises high-pressure air source, gas heater, high pressure powder feed device, gas regulation control system and spray gun, high-pressure air source is communicated with the input of gas regulation control system, first of gas regulation control system exports and is communicated with the rear portion mixing chamber of spray gun through gas heater, second of body regulation and control system exports and is communicated with the rear portion mixing chamber of spray gun through high pressure powder feed device, spray gun adopts scaling type Lavalle spray gun
3rd step, directly uses the ag-based contact material of formation or uses after 30-60 minute 900-920 DEG C of annealing.
Embodiment 2
A method for straight forming silver-base alloy contact, comprises the following steps:
The first step, according to the proportioning components of money base contact by material powder Homogeneous phase mixing, it is the silver of 40-70%, the tungsten carbide of 30-60% that the composition of ag-based contact material comprises mass percent, and the granularity of tungsten-carbide powder is 1-20 μm, and the granularity of silver powder is 10-150 μm,
Second step, mixed-powder is inputted the powder feed system of cold spraying system, adopt normal temperature or spray through the gas of heating, the gas temperature of heating is 500 ~ 550 DEG C, material powder, under the effect of 1.5 ~ 3.5Mpa gases at high pressure, collides Copper substrate generation plastic deformation, and then is deposited on copper base-plates surface formation ag-based contact material, gas is industrial nitrogen
Described cold spraying system comprises high-pressure air source, gas heater, high pressure powder feed device, gas regulation control system and spray gun, high-pressure air source is communicated with the input of gas regulation control system, first of gas regulation control system exports and is communicated with the rear portion mixing chamber of spray gun through gas heater, second of body regulation and control system exports and is communicated with the rear portion mixing chamber of spray gun through high pressure powder feed device, spray gun adopts scaling type Lavalle spray gun
3rd step, directly uses the ag-based contact material of formation or uses after 30-60 minute 900-920 DEG C of annealing.
Embodiment 3
A method for straight forming silver-base alloy contact, comprises the following steps:
The first step, according to the proportioning components of money base contact by material powder Homogeneous phase mixing, it is the silver of 60-90%, the iron of 10-40% that the composition of ag-based contact material comprises mass percent, and the granularity of iron powder is 40-100 μm, and the granularity of silver powder is 10-150 μm,
Second step, mixed-powder is inputted the powder feed system of cold spraying system, adopt normal temperature or spray through the gas of heating, the gas temperature of heating is 500 ~ 520 DEG C, material powder, under the effect of 1.5 ~ 2.0Mpa gases at high pressure, collides Copper substrate generation plastic deformation, and then is deposited on copper base-plates surface formation ag-based contact material, gas is technical pure argon gas
Described cold spraying system comprises high-pressure air source, gas heater, high pressure powder feed device, gas regulation control system and spray gun, high-pressure air source is communicated with the input of gas regulation control system, first of gas regulation control system exports and is communicated with the rear portion mixing chamber of spray gun through gas heater, second of body regulation and control system exports and is communicated with the rear portion mixing chamber of spray gun through high pressure powder feed device, spray gun adopts scaling type Lavalle spray gun
3rd step, directly uses the ag-based contact material of formation or uses after 40-60 minute 880-900 DEG C of annealing.
Embodiment 4
A method for straight forming silver-base alloy contact, comprises the following steps:
The first step, according to the proportioning components of money base contact by material powder Homogeneous phase mixing, it is the silver of 60-90%, the nickel of 10-40% that the composition of ag-based contact material comprises mass percent, and the granularity of nickel powder is 40-100 μm, and the granularity of silver powder is 10-150 μm,
Second step, mixed-powder is inputted the powder feed system of cold spraying system, adopt normal temperature or spray through the gas of heating, the gas temperature of heating is 500 ~ 550 DEG C, material powder, under the effect of 1.5 ~ 2.0Mpa gases at high pressure, collides Copper substrate generation plastic deformation, and then is deposited on copper base-plates surface formation ag-based contact material, gas is technical pure argon gas
Described cold spraying system comprises high-pressure air source, gas heater, high pressure powder feed device, gas regulation control system and spray gun, high-pressure air source is communicated with the input of gas regulation control system, first of gas regulation control system exports and is communicated with the rear portion mixing chamber of spray gun through gas heater, second of body regulation and control system exports and is communicated with the rear portion mixing chamber of spray gun through high pressure powder feed device, spray gun adopts scaling type Lavalle spray gun
3rd step, directly uses the ag-based contact material of formation.
Embodiment 5
A method for straight forming silver-base alloy contact, comprises the following steps:
The first step, according to the proportioning components of money base contact by material powder Homogeneous phase mixing, it is the silver of 80-95%, the carbon of 5-20% that the composition of ag-based contact material comprises mass percent, the existence form of carbon is graphite, the granularity of graphite powder is 0.01-5 μm, and the granularity of silver powder is 10-150 μm
Second step, by mixed-powder or the powder feed system inputting cold spraying system through the powder of granulation, the gas through heating is adopted to spray, the gas temperature of heating is 500 ~ 550 DEG C, material powder, under the effect of 2.5 ~ 3.5Mpa gases at high pressure, collides Copper substrate generation plastic deformation, and then is deposited on copper base-plates surface formation ag-based contact material, gas is air
Described cold spraying system comprises high-pressure air source, gas heater, high pressure powder feed device, gas regulation control system and spray gun, high-pressure air source is communicated with the input of gas regulation control system, first of gas regulation control system exports and is communicated with the rear portion mixing chamber of spray gun through gas heater, second of body regulation and control system exports and is communicated with the rear portion mixing chamber of spray gun through high pressure powder feed device, spray gun adopts scaling type Lavalle spray gun
3rd step, directly uses the ag-based contact material of formation or uses after 20-30 minute 900-920 DEG C of annealing.
Embodiment 6
A method for straight forming silver-base alloy contact, comprises the following steps:
The first step, according to the proportioning components of money base contact by material powder Homogeneous phase mixing, it is the silver of 80-95%, the carbon of 5-20% that the composition of ag-based contact material comprises mass percent, the existence form of carbon is carbon pipe, carbon pipe is single-wall carbon tube or many walls carbon pipe, longitudinal size is 0.05-5 μm, and the granularity of silver powder is 10-150 μm
Second step, by mixed-powder or the powder feed system inputting cold spraying system through the powder of granulation, the gas through heating is adopted to spray, the temperature of heating is 500 ~ 550 DEG C, material powder, under the effect of 2.5 ~ 3.5Mpa gases at high pressure, collides Copper substrate generation plastic deformation, and then is deposited on copper base-plates surface formation ag-based contact material, gas is air
Described cold spraying system comprises high-pressure air source, gas heater, high pressure powder feed device, gas regulation control system and spray gun, high-pressure air source is communicated with the input of gas regulation control system, first of gas regulation control system exports and is communicated with the rear portion mixing chamber of spray gun through gas heater, second of body regulation and control system exports and is communicated with the rear portion mixing chamber of spray gun through high pressure powder feed device, spray gun adopts scaling type Lavalle spray gun
3rd step, directly uses the ag-based contact material of formation or uses after 20-30 minute 900-920 DEG C of annealing.
Embodiment 7
A method for straight forming silver-base alloy contact, comprises the following steps:
The first step, according to the proportioning components of money base contact by material powder Homogeneous phase mixing, the composition of ag-based contact material comprises silver, the carbon of 0-10%, the tungsten of 0-60%, the tungsten carbide of 0-60% that mass percent is 40-90%, the existence form of carbon is graphite, the granularity of silver powder is 10-150 μm, and the granularity of tungsten powder is 1-20 μm, and the granularity of tungsten-carbide powder is 1-20 μm, the granularity of graphite powder is 0.05-5 μm
Second step, by mixed-powder or the powder feed system inputting cold spraying system through the powder of granulation, the gas through heating is adopted to spray, the gas temperature of heating is 500 ~ 550 DEG C, material powder, under the effect of 2.5 ~ 3.5Mpa gases at high pressure, collides Copper substrate generation plastic deformation, and then is deposited on copper base-plates surface formation ag-based contact material, gas is air
Described cold spraying system comprises high-pressure air source, gas heater, high pressure powder feed device, gas regulation control system and spray gun, high-pressure air source is communicated with the input of gas regulation control system, first of gas regulation control system exports and is communicated with the rear portion mixing chamber of spray gun through gas heater, second of body regulation and control system exports and is communicated with the rear portion mixing chamber of spray gun through high pressure powder feed device, spray gun adopts scaling type Lavalle spray gun
3rd step, directly uses the ag-based contact material of formation or uses after 30-60 minute 900-920 DEG C of annealing.
Embodiment 8
A method for straight forming silver-base alloy contact, comprises the following steps:
The first step, according to the proportioning components of money base contact by material powder Homogeneous phase mixing, the composition of ag-based contact material comprises silver, the carbon of 0-7%, the tungsten of 0-60%, the tungsten carbide of 0-60% that mass percent is 40-90%, the existence form of carbon is the mixture of carbon black and carbon pipe, the mass ratio of carbon black and carbon pipe is 5: 2, carbon pipe is single-wall carbon tube or many walls carbon pipe, longitudinal size is 0.05-5 μm, the granularity of carbon black is 0.005-1 μm, the granularity of silver powder is 10-150 μm, the granularity of tungsten powder is 1-20 μm, and the granularity of tungsten-carbide powder is 1-20 μm
Second step, by mixed-powder or the powder feed system inputting cold spraying system through the powder of granulation, the gas through heating is adopted to spray, the temperature of heating is 500 ~ 550 DEG C, material powder, under the effect of 2.5 ~ 3.5Mpa gases at high pressure, collides Copper substrate generation plastic deformation, and then is deposited on copper base-plates surface formation ag-based contact material, gas is air
Described cold spraying system comprises high-pressure air source, gas heater, high pressure powder feed device, gas regulation control system and spray gun, high-pressure air source is communicated with the input of gas regulation control system, first of gas regulation control system exports and is communicated with the rear portion mixing chamber of spray gun through gas heater, second of body regulation and control system exports and is communicated with the rear portion mixing chamber of spray gun through high pressure powder feed device, spray gun adopts scaling type Lavalle spray gun
3rd step, directly uses the ag-based contact material of formation or uses after 20-60 minute 900-920 DEG C of annealing.
Claims (9)
1. a method for straight forming silver-base alloy contact, is characterized in that, comprises the following steps:
The first step, according to the proportioning components of money base contact by material powder Homogeneous phase mixing, the composition of ag-based contact material comprises silver, the carbon of 0-20%, the nickel of 0-50%, the iron of 0-40%, the tungsten of 0-60%, the tungsten carbide of 0-60% that mass percent is 40-95%, the existence form of carbon is graphite, carbon black, carbon pipe or their mixture, the granularity of material powder is 0.1-150 μm
Second step, mixed-powder is inputted the powder feed system of cold spraying system, adopt normal temperature or spray through the gas of heating, the gas temperature of heating is 100 ~ 600 DEG C, material powder, under the effect of 1.5 ~ 3.5Mpa gases at high pressure, collides Copper substrate generation plastic deformation, and then is deposited on copper base-plates surface formation ag-based contact material, gas is air, industrial nitrogen or technical pure argon gas
Described cold spraying system comprises high-pressure air source, gas heater, high pressure powder feed device, gas regulation control system and spray gun, high-pressure air source is communicated with the input of gas regulation control system, first of gas regulation control system exports and is communicated with the rear portion mixing chamber of spray gun after gas heater, second of gas regulation control system exports and is communicated with the rear portion mixing chamber of spray gun after high pressure powder feed device, spray gun adopts scaling type Lavalle spray gun
3rd step, directly uses the ag-based contact material of formation or uses after 30-60 minute 850-950 DEG C of annealing.
2. the method for a kind of straight forming silver-base alloy contact according to claim 1, is characterized in that, comprise the following steps:
The first step, according to the proportioning components of money base contact by material powder Homogeneous phase mixing, it is the silver of 40-70%, the tungsten of 30-60% that the composition of ag-based contact material comprises mass percent, and the granularity of tungsten powder is 1-20 μm, and the granularity of silver powder is 10-150 μm,
Second step, mixed-powder is inputted the powder feed system of cold spraying system, adopt normal temperature or spray through the gas of heating, the gas temperature of heating is 500 ~ 550 DEG C, material powder, under the effect of 1.5 ~ 2.0Mpa gases at high pressure, collides Copper substrate generation plastic deformation, and then is deposited on copper base-plates surface formation ag-based contact material, gas is industrial nitrogen
Described cold spraying system comprises high-pressure air source, gas heater, high pressure powder feed device, gas regulation control system and spray gun, high-pressure air source is communicated with the input of gas regulation control system, first of gas regulation control system exports and is communicated with the rear portion mixing chamber of spray gun after gas heater, second of gas regulation control system exports and is communicated with the rear portion mixing chamber of spray gun after high pressure powder feed device, spray gun adopts scaling type Lavalle spray gun
3rd step, directly uses the ag-based contact material of formation or uses after 30-60 minute 900-920 DEG C of annealing.
3. the method for a kind of straight forming silver-base alloy contact according to claim 1, is characterized in that, comprise the following steps:
The first step, according to the proportioning components of money base contact by material powder Homogeneous phase mixing, it is the silver of 40-70%, the tungsten carbide of 30-60% that the composition of ag-based contact material comprises mass percent, and the granularity of tungsten-carbide powder is 1-20 μm, and the granularity of silver powder is 10-150 μm,
Second step, mixed-powder is inputted the powder feed system of cold spraying system, adopt normal temperature or spray through the gas of heating, the gas temperature of heating is 500 ~ 550 DEG C, material powder, under the effect of 1.5 ~ 3.5Mpa gases at high pressure, collides Copper substrate generation plastic deformation, and then is deposited on copper base-plates surface formation ag-based contact material, gas is industrial nitrogen
Described cold spraying system comprises high-pressure air source, gas heater, high pressure powder feed device, gas regulation control system and spray gun, high-pressure air source is communicated with the input of gas regulation control system, first of gas regulation control system exports and is communicated with the rear portion mixing chamber of spray gun after gas heater, second of gas regulation control system exports and is communicated with the rear portion mixing chamber of spray gun after high pressure powder feed device, spray gun adopts scaling type Lavalle spray gun
3rd step, directly uses the ag-based contact material of formation or uses after 30-60 minute 900-920 DEG C of annealing.
4. the method for a kind of straight forming silver-base alloy contact according to claim 1, is characterized in that, comprise the following steps:
The first step, according to the proportioning components of money base contact by material powder Homogeneous phase mixing, it is the silver of 60-90%, the iron of 10-40% that the composition of ag-based contact material comprises mass percent, and the granularity of iron powder is 40-100 μm, and the granularity of silver powder is 10-150 μm,
Second step, mixed-powder is inputted the powder feed system of cold spraying system, adopt normal temperature or spray through the gas of heating, the gas temperature of heating is 500 ~ 520 DEG C, material powder, under the effect of 1.5 ~ 2.0Mpa gases at high pressure, collides Copper substrate generation plastic deformation, and then is deposited on copper base-plates surface formation ag-based contact material, gas is technical pure argon gas
Described cold spraying system comprises high-pressure air source, gas heater, high pressure powder feed device, gas regulation control system and spray gun, high-pressure air source is communicated with the input of gas regulation control system, first of gas regulation control system exports and is communicated with the rear portion mixing chamber of spray gun after gas heater, second of gas regulation control system exports and is communicated with the rear portion mixing chamber of spray gun after high pressure powder feed device, spray gun adopts scaling type Lavalle spray gun
3rd step, directly uses the ag-based contact material of formation or uses after 40-60 minute 880-900 DEG C of annealing.
5. the method for a kind of straight forming silver-base alloy contact according to claim 1, is characterized in that, comprise the following steps:
The first step, according to the proportioning components of money base contact by material powder Homogeneous phase mixing, it is the silver of 60-90%, the nickel of 10-40% that the composition of ag-based contact material comprises mass percent, and the granularity of nickel powder is 40-100 μm, and the granularity of silver powder is 10-150 μm,
Second step, mixed-powder is inputted the powder feed system of cold spraying system, adopt normal temperature or spray through the gas of heating, the gas temperature of heating is 500 ~ 550 DEG C, material powder, under the effect of 1.5 ~ 2.0Mpa gases at high pressure, collides Copper substrate generation plastic deformation, and then is deposited on copper base-plates surface formation ag-based contact material, gas is technical pure argon gas
Described cold spraying system comprises high-pressure air source, gas heater, high pressure powder feed device, gas regulation control system and spray gun, high-pressure air source is communicated with the input of gas regulation control system, first of gas regulation control system exports and is communicated with the rear portion mixing chamber of spray gun after gas heater, second of gas regulation control system exports and is communicated with the rear portion mixing chamber of spray gun after high pressure powder feed device, spray gun adopts scaling type Lavalle spray gun
3rd step, directly uses the ag-based contact material of formation.
6. the method for a kind of straight forming silver-base alloy contact according to claim 1, is characterized in that, comprise the following steps:
The first step, according to the proportioning components of money base contact by material powder Homogeneous phase mixing, it is the silver of 80-95%, the carbon of 5-20% that the composition of ag-based contact material comprises mass percent, the existence form of carbon is graphite, the granularity of graphite powder is 0.01-5 μm, and the granularity of silver powder is 10-150 μm
Second step, by mixed-powder or the powder feed system inputting cold spraying system through the powder of granulation, the gas through heating is adopted to spray, the gas temperature of heating is 500 ~ 550 DEG C, material powder, under the effect of 2.5 ~ 3.5Mpa gases at high pressure, collides Copper substrate generation plastic deformation, and then is deposited on copper base-plates surface formation ag-based contact material, gas is air
Described cold spraying system comprises high-pressure air source, gas heater, high pressure powder feed device, gas regulation control system and spray gun, high-pressure air source is communicated with the input of gas regulation control system, first of gas regulation control system exports and is communicated with the rear portion mixing chamber of spray gun after gas heater, second of gas regulation control system exports and is communicated with the rear portion mixing chamber of spray gun after high pressure powder feed device, spray gun adopts scaling type Lavalle spray gun
3rd step, directly uses the ag-based contact material of formation or uses after 20-30 minute 900-920 DEG C of annealing.
7. the method for a kind of straight forming silver-base alloy contact according to claim 1, is characterized in that, comprise the following steps:
The first step, according to the proportioning components of money base contact by material powder Homogeneous phase mixing, it is the silver of 80-95%, the carbon of 5-20% that the composition of ag-based contact material comprises mass percent, the existence form of carbon is carbon pipe, carbon pipe is single-wall carbon tube or many walls carbon pipe, longitudinal size is 0.05-5 μm, and the granularity of silver powder is 10-150 μm
Second step, by mixed-powder or the powder feed system inputting cold spraying system through the powder of granulation, the gas through heating is adopted to spray, the gas temperature of heating is 500 ~ 550 DEG C, material powder, under the effect of 2.5 ~ 3.5Mpa gases at high pressure, collides Copper substrate generation plastic deformation, and then is deposited on copper base-plates surface formation ag-based contact material, gas is air
Described cold spraying system comprises high-pressure air source, gas heater, high pressure powder feed device, gas regulation control system and spray gun, high-pressure air source is communicated with the input of gas regulation control system, first of gas regulation control system exports and is communicated with the rear portion mixing chamber of spray gun after gas heater, second of gas regulation control system exports and is communicated with the rear portion mixing chamber of spray gun after high pressure powder feed device, spray gun adopts scaling type Lavalle spray gun
3rd step, directly uses the ag-based contact material of formation or uses after 20-30 minute 900-920 DEG C of annealing.
8. the method for a kind of straight forming silver-base alloy contact according to claim 1, is characterized in that, comprise the following steps:
The first step, according to the proportioning components of money base contact by material powder Homogeneous phase mixing, the composition of ag-based contact material comprises silver, the carbon of 0-10%, the tungsten of 0-60%, the tungsten carbide of 0-60% that mass percent is 40-90%, the existence form of carbon is graphite, the granularity of silver powder is 10-150 μm, and the granularity of tungsten powder is 1-20 μm, and the granularity of tungsten-carbide powder is 1-20 μm, the granularity of graphite powder is 0.05-5 μm
Second step, by mixed-powder or the powder feed system inputting cold spraying system through the powder of granulation, the gas through heating is adopted to spray, the gas temperature of heating is 500 ~ 550 DEG C, material powder, under the effect of 2.5 ~ 3.5Mpa gases at high pressure, collides Copper substrate generation plastic deformation, and then is deposited on copper base-plates surface formation ag-based contact material, gas is air
Described cold spraying system comprises high-pressure air source, gas heater, high pressure powder feed device, gas regulation control system and spray gun, high-pressure air source is communicated with the input of gas regulation control system, first of gas regulation control system exports and is communicated with the rear portion mixing chamber of spray gun after gas heater, second of gas regulation control system exports and is communicated with the rear portion mixing chamber of spray gun after high pressure powder feed device, spray gun adopts scaling type Lavalle spray gun
3rd step, directly uses the ag-based contact material of formation or uses after 30-60 minute 900-920 DEG C of annealing.
9. the method for a kind of straight forming silver-base alloy contact according to claim 1, is characterized in that, comprise the following steps:
The first step, according to the proportioning components of money base contact by material powder Homogeneous phase mixing, the composition of ag-based contact material comprises silver, the carbon of 0-7%, the tungsten of 0-60%, the tungsten carbide of 0-60% that mass percent is 40-90%, the existence form of carbon is the mixture of carbon black and carbon pipe, the mass ratio of carbon black and carbon pipe is 5:2, carbon pipe is single-wall carbon tube or many walls carbon pipe, longitudinal size is 0.05-5 μm, the granularity of carbon black is 0.005-1 μm, the granularity of silver powder is 10-150 μm, the granularity of tungsten powder is 1-20 μm, and the granularity of tungsten-carbide powder is 1-20 μm
Second step, by mixed-powder or the powder feed system inputting cold spraying system through the powder of granulation, the gas through heating is adopted to spray, the temperature of heating is 500 ~ 550 DEG C, material powder, under the effect of 2.5 ~ 3.5Mpa gases at high pressure, collides Copper substrate generation plastic deformation, and then is deposited on copper base-plates surface formation ag-based contact material, gas is air
Described cold spraying system comprises high-pressure air source, gas heater, high pressure powder feed device, gas regulation control system and spray gun, high-pressure air source is communicated with the input of gas regulation control system, first of gas regulation control system exports and is communicated with the rear portion mixing chamber of spray gun after gas heater, second of gas regulation control system exports and is communicated with the rear portion mixing chamber of spray gun after high pressure powder feed device, spray gun adopts scaling type Lavalle spray gun
3rd step, directly uses the ag-based contact material of formation or uses after 20-60 minute 900-920 DEG C of annealing.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110207457.6A CN102299016B (en) | 2011-07-22 | 2011-07-22 | A kind of method of straight forming silver-base alloy contact |
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| CN201110207457.6A CN102299016B (en) | 2011-07-22 | 2011-07-22 | A kind of method of straight forming silver-base alloy contact |
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| CN102299016A CN102299016A (en) | 2011-12-28 |
| CN102299016B true CN102299016B (en) | 2015-09-23 |
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| CN102899551B (en) * | 2012-11-07 | 2014-12-10 | 福达合金材料股份有限公司 | Silver-saving silver tungsten carbide graphite electrical contact material for high-performance low-voltage circuit breaker |
| CN103017171A (en) * | 2012-11-30 | 2013-04-03 | 北京科技大学 | Method for obtaining high-temperature and high-pressure gas |
| CN106694872A (en) * | 2016-11-18 | 2017-05-24 | 华中科技大学 | Compound additional material manufacturing method applicable to parts and dies |
| CN111029179A (en) * | 2019-12-11 | 2020-04-17 | 哈尔滨东大高新材料股份有限公司 | Contact material for low-voltage electrical apparatus and copper compounding method |
| CN111979536A (en) * | 2020-09-18 | 2020-11-24 | 武汉大学 | Hydrophobic rare earth doped copper-silver alloy-carbon nano composite coating material for electrical contact and preparation method thereof |
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