CN107598176A - A kind of preparation technology of siluer metal oxide contact material - Google Patents
A kind of preparation technology of siluer metal oxide contact material Download PDFInfo
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- CN107598176A CN107598176A CN201710649464.9A CN201710649464A CN107598176A CN 107598176 A CN107598176 A CN 107598176A CN 201710649464 A CN201710649464 A CN 201710649464A CN 107598176 A CN107598176 A CN 107598176A
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- alloy
- spheroid
- metal oxide
- internal oxidition
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Abstract
The invention discloses a kind of preparation technology of siluer metal oxide contact material, comprise the following steps：（1）Silver, metal component additive and other additives are melted and to form alloy molten solution；（2）Alloy spheroid is molded into using alloy molten solution system；（3）Alloy spheroid is dried；（4）Filter out a diameter of 0.5~5mm alloy spheroid；（5）Alloy spheroid is often increased into 0.5mm according to diameter to be classified；（6）Alloy spheroid after the classification internal oxidition at the temperature, pressure, time conditions of setting；（7）Alloy spheroid after oxidation, which merges, is pressed into spindle；（8）Thicker siluer metal oxide wire rod is squeezed into after spindle is sintered；（9）Siluer metal oxide wire drawing is to trimmed size.The advantages of technique be stock utilization is high, process is few, it is with short production cycle, in the absence of poor oxide region.
Description
Technical field
The invention belongs to contact material field, specifically a kind of preparation technology of siluer metal oxide contact material.
Background technology
In electrical contact field, siluer metal oxide material is due to excellent anti electric arc corrosion, resistance fusion welding and low
And the comprehensive electrochemical properties such as stable contact resistance, occupied an important position in whole electrical contact material system.Silver metal aoxidizes
The most common preparation technology of thing wire rod has three kinds, respectively internal oxidation process, pre-oxidation process and powder metallurgical technique.
Traditional internal oxidation process flow is as follows：
--- --- --- --- internal oxidition --- thrusts --- briquetting --- burning to wire drawing to alloy melting for extruding for spindle turning
Knot --- extruding --- wire drawing --- finished product.Its production process is briefly described as follows：By silver, metal and additive fusing shape
Into alloy, billet is cast into, turning removes spindle surface scale and impurity, thicker alloy is squeezed into after spindle preheating uniformly
Wire rod, thinner alloy wire is drawn to, then internal oxidition forms siluer metal oxide wire rod under certain temperature and pressure,
Wire rod after internal oxidition thrusts into a certain degree of line segment, is pressed into billet, after oversintering secondary extrusion into thicker wire rod,
Then required diameter is drawn to, siluer metal oxide finished wire rod is made.Internal oxidation process can obtain thicker oxide
Particle, the excellent siluer metal oxide wire rod of processing characteristics can be obtained after secondary extrusion.In actual production process, due to
The difference of custom is produced, the producer of different contact materials can carry out some fine settings, example in traditional internal oxidation process flow
As thrust first after silk material drawing, the material section thrust carries out internal oxidition, and then briquetting sintering carries out secondary extrusion again.It is this
The shortcomings that production technology is that production process is more, cycle length, poor oxide region be present.
Patent CN102154572B discloses a kind of gradient internal oxidation and prepares silver-tin oxide or indium oxide contact material
Process, its processing step are：--- --- --- drawing --- thrusts --- rank to extruding wire rod to alloy melting for spindle turning
Terraced internal oxidition --- briquetting --- sintering --- extruding --- drawing --- finished product；Or alloy melting --- spindle turning ---
Extrusion plate --- rolling --- it is broken --- ladder internal oxidition --- briquetting --- sintering --- extruding --- drawing --- into
Product.The purpose is to surface during traditional silver-tin oxide or indium oxide material internal oxidition is eliminated by ladder internal oxidation process to separate out
Fine silver layer.
Patent CN101950696B discloses a kind of preparation method of sliver oxidized tin contactor materials, and its processing step is：Close
--- --- --- --- internal oxidition --- broken --- squeeze by briquetting --- sintering --- for cold rolling for hot rolling for spindle turning for golden melting
Press --- drawing --- finished product.But be the increase in hot-rolled process without by extruding after ingot casting turning in production process, hot rolling and
The effect of extruding is identical, is all that spindle is used to larger deflection rapid translating after heating for less specification.
Patent CN101777438B discloses a kind of high-performance silver cadmium oxide material and preparation method thereof, its processing step
For：--- --- --- --- internal oxidition --- thrusting briquetting --- burns wire drawing extruding wire rod alloy melting for spindle turning
Knot --- extruding --- wire drawing --- finished product.Production process employs traditional production procedure, is added in material system
Lucium improves the uniformity of oxide distribution.
Patent CN103700544B discloses a kind of tin-oxygen-silver electric contact material preparation method of even tissue, its technique
Step is：Alloy melting --- spindle turning --- extruding wire rod --- wire drawing --- thrusting briquetting --- oxygen in spindle
Change --- multiple pressure --- spindle turning --- extruding --- wire drawing --- finished product.Exist with traditional production procedure difference
In after alloy wire drawing is thrust, being pressed into alloy pig and then carry out internal oxidition, the spindle after internal oxidition is after turning again
It is squeezed into siluer metal oxide wire rod.
Patent CN106048289A discloses a kind of large or fine granule collocation internal oxidation silver cadmium oxide material manufacture craft, its
Processing step is：--- --- --- wire drawing --- is thrust --- internal oxidition --- extruding wire rod alloy melting for spindle turning
Briquetting --- sintering --- extruding --- wire drawing --- finished product.Production process employs traditional production procedure, in interior oxygen
First low-temperature oxidation and then the special oxidation technology of high-temperature oxydation are employed during change, obtains the collocation of oxide particle thickness
Silver cadmium oxide material.
Technological process used by above-mentioned patent, and traditional internal oxidation process flow, all exist process it is more, production
Cycle is longer, the weak point of poor oxide region be present, and how to shorten the production cycle of siluer metal oxide wire rod, reduces life
Process is produced, influence of the poor oxide region to product electrical property in traditional internal oxidation process is eliminated, is the problem of the industry, therefore
It is necessary to be improved.
The content of the invention
The invention aims to overcome traditional internal oxidation process to exist during preparing siluer metal oxide wire rod
Stock utilization it is low, the production cycle is long, process is various, the shortcomings that poor oxide region be present, and provide a kind of oxidation of silver metal
The preparation technology of thing contact material.The process materials utilization rate is high, process is few, it is with short production cycle, in the absence of poor oxide region,
Manufacturing cost is reduced, improves reliability and uniformity in internal oxidation siluer metal oxide wire rod application process.
To achieve the above object, the technical scheme is that comprising the following steps：
（1）Silver, metal component additive and other additives are melted and to form alloy molten solution；
（2）Alloy spheroid is molded into using alloy molten solution system；
（3）Alloy spheroid is dried；
（4）Filter out a diameter of 0.5~5mm alloy spheroid；
（5）Alloy spheroid is often increased into a diameter value added according to diameter to be classified；
（6）Alloy spheroid after the classification internal oxidition under the conditions of defined temperature and pressure；
（7）Alloy spheroid after oxidation, which merges, is pressed into spindle；
（8）Thicker siluer metal oxide wire rod is squeezed into after spindle is sintered；
（9）Siluer metal oxide wire drawing is to trimmed size.
It is described step further to set（2）Will by metal bead scattering machine, metal ball body forming machine or metal comminutor
Alloy molten solution system is molded into alloy spheroid.
It is step further to set（1）In metal component additive include Cd, Sn, In, Zn, Cu in it is a kind of or several
Kind, other additives include the one or more in Bi, Ni, Al, Sb, Te, Co.
It is step further to set（5）Middle alloy spheroid grade scale is that the diameter value added that diameter often increases 0.5mm is
One class, alloy spheroid of the diameter in the range of 0.5~5mm is divided into 9 class.
It is the step further to set（6）The internal oxidition time according to rank with reference to following table.
It is the step further to set（6）The temperature and pressure condition of the internal oxidition is：550 DEG C~780 DEG C of temperature, pressure
0.3MPa~1.5MPa.
Compared with traditional internal oxidation process, the present invention has the advantage that and good effect：
1st, stock utilization is high, with short production cycle.The present invention directly prepares alloy spheroid and then internal oxidition using alloy molten solution
Technique, the technique after internal oxidition is identical with traditional handicraft, and the maximum difference of the technique and traditional handicraft before internal oxidition is
Eliminate spindle turning, extruding etc. and have a strong impact on stock utilization and the process of production cycle, develop a kind of faster, material
The higher mode of production of utilization rate；
2nd, make siluer metal oxide contact material electrical property that there is more preferable uniformity and reliability.Traditional internal oxidation process uses
Wire rod internal oxidition, line segment internal oxidition, other patents fragment internal oxidition referred to, spindle internal oxidition etc., in interior oxidizing process
The poor oxide region of wire or planar can be formed, although the shadow of poor oxide region can be substantially eliminated after secondary extrusion
Ring, but in a small range due to the presence of poor oxide region, cause siluer metal oxide material electrical property uniformity and can
Reduced by property.The present invention uses the technique of metal ball body internal oxidition, due to all directions oxidation rate phase in spheroid oxidizing process
Together, the poor oxide region ultimately formed is focused only in the central point of spheroid.With the oxygen deprivation of wire in traditional handicraft or planar
Compound area compares, and the poor oxide region of point-like greatly reduces the ratio of poor oxide region and normal structure, improves material
Uniformity, and then improve the uniformity and reliability of material.
3rd, the process route that the present invention designs is simple, has lower manufacturing cost compared with conventional internal oxidation process, fits
Close and produce in enormous quantities.
The present invention is described further with reference to specification drawings and specific embodiments.
Brief description of the drawings
The process chart of Fig. 1 present invention.
Embodiment
The present invention is specifically described below by embodiment, is served only for that the present invention is further described, no
It is understood that for limiting the scope of the present invention, the technician in the field can be according to the content of foregoing invention to the present invention
Make some nonessential modifications and adaptations.
Embodiment one：
A) 22.200kg Ag, 2.750kg Cd, 0.050kg Ni are melted and forms alloy molten solution；
B) AgCd alloys spherical particles are prepared using metal bead scattering machine and dried；
C) 0.5~5mm of AgCd alloys spheroid screening size range；
D) alloy spheroid grade scale is that often to increase 0.5mm be a class to diameter, by conjunction of the diameter in the range of 0.5~5mm
Gold goal body is divided into 9 class；
E) 600 DEG C of alloy spheroid oxidizing temperature, oxidative pressure 0.60MPa, oxidization time is according to gradation with reference to following table：
F) the siluer metal oxide spheroid after aoxidizing merges briquetting and sintered；
G) spindle extruding specification Φ 6mm wire rod, is then drawn to trimmed size.
Embodiment two：
A) 22.500kgAg, 1.575kgSn, 0.825kgIn, 0.050kg Bi, 0.025kg Te, 0.025kgCo are melted into shape
Into alloy molten solution；
B) for AgSnIn alloys spherical particles and dried using metal ball body shaping mechanism；
C) 0.5~5mm of AgSnIn alloys spheroid screening size range；
D) alloy spheroid grade scale is that often to increase 0.5mm be a class to diameter, by conjunction of the diameter in the range of 0.5~5mm
Gold goal body is divided into 9 class；
E) 550 DEG C of alloy spheroid oxidizing temperature, oxidative pressure 1.50MPa, oxidization time is according to gradation with reference to following table：
F) the siluer metal oxide spheroid after aoxidizing merges briquetting and sintered；
G) spindle extrudes the wire rod of thicker specification, is then drawn to trimmed size.
Embodiment three：
A) 21.912kgAg, 3.000kgCu, 0.025kgSb, 0.013kgAl, 0.050kgNi are melted to form alloy molten solution；
B) AgCu alloys spherical particles are prepared using metal comminutor and dried；
C) 0.5~5mm of AgCu alloys spheroid screening size range；
D) alloy spheroid grade scale is that often to increase 0.5mm be a class to diameter, by conjunction of the diameter in the range of 0.5~5mm
Gold goal body is divided into 9 class
E) 780 DEG C of alloy spheroid oxidizing temperature, oxidative pressure 0.30MPa, oxidization time is according to gradation with reference to following table：
F) the siluer metal oxide spheroid after aoxidizing merges briquetting and sintered；
G) spindle extrudes the wire rod of thicker specification, is then drawn to trimmed size.
Example IV：
A) 22.775kgAg, 2.075kgZn, 0.125kgCu, 0.025kgNi are melted to form alloy molten solution；
B) for AgZn alloys spherical particles and dried using metal ball body shaping mechanism；
C) 0.5~5mm of AgZn alloys spheroid screening size range；
D) alloy spheroid grade scale is that often to increase 0.5mm be a class to diameter, by conjunction of the diameter in the range of 0.5~5mm
Gold goal body is divided into 9 class
E) 700 DEG C of alloy spheroid oxidizing temperature, oxidative pressure 0.90MPa, oxidization time is according to gradation with reference to following table：
F) the siluer metal oxide spheroid after aoxidizing merges briquetting and sintered；
G) spindle extrudes the wire rod of thicker specification, is then drawn to trimmed size.
Claims (6)
1. a kind of preparation technology of siluer metal oxide contact material, it is characterised in that comprise the following steps：
（1）Silver, metal component additive and other additives are melted and to form alloy molten solution；
（2）Alloy spheroid is molded into using alloy molten solution system；
（3）Alloy spheroid is dried；
（4）Filter out a diameter of 0.5~5mm alloy spheroid；
（5）Alloy spheroid is often increased into a diameter value added according to diameter to be classified；
（6）Alloy spheroid after the classification internal oxidition under the conditions of certain temperature and pressure；
（7）Alloy spheroid after oxidation, which merges, is pressed into spindle；
（8）Thicker siluer metal oxide wire rod is squeezed into after spindle is sintered；
（9）Siluer metal oxide wire drawing is to trimmed size.
A kind of 2. preparation technology of siluer metal oxide contact material according to claim 1, it is characterised in that：It is described
The step of（2）Alloy molten solution system is molded into by alloy spheroid by metal bead scattering machine, metal ball body forming machine or metal comminutor.
A kind of 3. preparation technology of siluer metal oxide contact material according to claim 1, it is characterised in that：Step
（1）In metal component additive include Cd, Sn, In, Zn, Cu in one or several kinds, other additives include Bi, Ni,
One or more in Al, Sb, Te, Co.
A kind of 4. preparation technology of siluer metal oxide contact material according to claim 1, it is characterised in that：Step
（5）Middle alloy spheroid grade scale is that the diameter value added that diameter often increases 0.5mm is a class, by diameter in 0.5~5mm
In the range of alloy spheroid be divided into 9 class.
A kind of 5. preparation technology of siluer metal oxide contact material according to claim 4, it is characterised in that：It is described
Step（6）The internal oxidition time be correspondingly arranged according to the particle size a of alloy spheroid, be specially：
0.5mm≤a ＜ 1.0mm, then the internal oxidition time is 7~9h；
1mm≤a ＜ 1.5mm, then the internal oxidition time is 11~15h；
1.5mm≤a ＜ 2mm, then the internal oxidition time is 15~20h；
2.0mm≤a ＜ 2.5mm, then the internal oxidition time is 20~25 h；
2.5 mm≤the mm of a ＜ 3.0, then the internal oxidition time is 35~40 h；
3.0 mm≤the mm of a ＜ 3.5, then the internal oxidition time is 50~55 h；
3.5 mm≤the mm of a ＜ 4.0, then the internal oxidition time is 70~75 h；
4.0 mm≤the mm of a ＜ 4.5, then the internal oxidition time is 90~95 h；
4.5 mm≤the mm of a ＜ 5.0, then the internal oxidition time is 110~120 h.
A kind of 6. preparation technology of siluer metal oxide contact material according to claim 1 or 5, it is characterised in that：
The step（6）The temperature and pressure condition of the internal oxidition is：550 DEG C~780 DEG C of temperature, pressure 0.3MPa~1.5MPa.
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| CN108950257A (en) * | 2018-07-09 | 2018-12-07 | 福达合金材料股份有限公司 | A method of improving reinforced phase distributing homogeneity in siluer metal oxide contact material |
| CN110976801A (en) * | 2019-11-22 | 2020-04-10 | 桂林金格电工电子材料科技有限公司 | Method for preparing silver tin oxide indium oxide contact material by up-drawing continuous casting process |
| CN111020268A (en) * | 2019-11-22 | 2020-04-17 | 桂林金格电工电子材料科技有限公司 | Preparation method of silver tin oxide indium oxide contact material with uniform structure |
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Effective date of registration: 20220207 Address after: 325025 No. 308, Binhai fifth road, Wenzhou Economic and Technological Development Zone, Wenzhou City, Zhejiang Province Patentee after: Zhejiang Fuda alloy material technology Co.,Ltd. Address before: No. 518, Binhai 4th Road, Binhai Park, Wenzhou Economic and Technological Development Zone, Zhejiang Province, 325000 Patentee before: FUDA ALLOY MATERIALS Co.,Ltd. |