CN103352136A - Copper-based contact material and manufacturing process thereof - Google Patents
Copper-based contact material and manufacturing process thereof Download PDFInfo
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- CN103352136A CN103352136A CN2013103050525A CN201310305052A CN103352136A CN 103352136 A CN103352136 A CN 103352136A CN 2013103050525 A CN2013103050525 A CN 2013103050525A CN 201310305052 A CN201310305052 A CN 201310305052A CN 103352136 A CN103352136 A CN 103352136A
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Abstract
The invention relates to a copper-based contact material and a manufacturing process thereof. The copper-based contact material comprises the following components in percentage by weight: 0.002-0.1 percent of yttrium, 0.002-0.08 percent of bismuth, 0.001-0.5 percent of titanium, 0.001-0.5 percent of molybdenum, 0.001-0.1 percent of tellurium, 0.003-0.5 percent of lanthanum, 0.03-1.0 percent of graphite, 0.01-0.2 percent of aluminum and the balancing percent being copper. With the adoption of rare earth powder metallurgy, the contact material has an obvious strengthening effect on a copper base on the premise of maintaining good electrical conductivity and thermal conductivity as well as low resistivity, improves the electric corrosion resistance and adhesion resistance of a contact, enables the breaking capability of the contact to be strong, and enables the contact to be suitable for higher current breaking; the manufacturing process adopts mixed rolling, pressing, sintering, re-pressing, re-sintering, squeezing and cold rolling, is conducive to the rearrangement and displacement of powder particles, can improve the compactness, moreover, can improve the distribution of the copper base in the contact material components, and improve the corrosion resistance of the contact material.
Description
Technical field
The present invention relates to a kind of copper-base contact material and manufacture craft.
Background technology
All the time, in the highest flight, and silver is a kind of scarce resource as precious metal to silver in Models of Contact Materials Used in Switches, once so that the cost of electrical contact can be in any more.In recent years, exploitation replaced silver with copper base alloy, and the contact material that can meet the electrical contact performance is to need to be resolved hurrily in the industry and perfect problem.
The electric property of copper-base contact material depends primarily on its composition and manufacture craft, because powder metallurgy process is easy to control material composition and quality, has obtained applying greatly in process of factory production.At present, the main bugbear of the manufacture craft of copper-base contact material has two broad aspect: one, the composition of Optimization of Copper base contact material how reaches the comprehensive raising of electric property; Two, the manufacture craft of Optimization of Copper base contact material is avoided because of the impact of powder metallurgy process at the inner pore that produces of contact material and defective antagonism arc erosion.
Summary of the invention
The object of the invention is to overcome the defective of prior art, the copper-base contact material that provides a kind of composition and performance optimization to cooperate, and the manufacture craft that can avoid the copper-base contact material that powder metallurgy process has a negative impact to the electrical contact performance.
For achieving the above object, the present invention adopts a kind of copper-base contact material, comprise following composition, the yttrium of 0.002～0.1% (weight), the bismuth of 0.002～0.08% (weight), the titanium of～0.5% 0.001 (weight), the molybdenum of～0.5% 0.001 (weight), the tellurium of 0.001～0.1% (weight), the lanthanum of 0.003～0.5% (weight), the graphite of～1.0% 0.03 (weight), the aluminium of 0.01～0.2% (weight) and the copper of surplus.
Proportioning below copper-base contact material of the present invention adopts is optimal effectiveness: the weight percent of described yttrium is 0.002%, the weight percent of described bismuth is 0.003%, the weight percent of described titanium is 0.001%, the weight percent of described molybdenum is 0.002%, the weight percent of described tellurium is 0.02%, the weight percent of described lanthanum is 0.005%, and the weight percent of described graphite is 0.05%, and the weight percent of described aluminium is 0.02%.
The manufacture craft of the copper-base contact material that the present invention adopts:
The first step by weight percentage, will contain yttrium 0.002～0.1%, bismuth 0.002～0.08%, titanium 0.001～0.5%, molybdenum 0.001～0.5%, tellurium 0.001～0.1%, lanthanum 0.003～0.5%, graphite 0.03～1.0%, the copper powder of aluminium 0.01～0.2% and surplus carries out abundant mix and blend;
Second step is put into pressing die with the powdered material that mixes, and is pressed into the round shape that splits with press, put into vacuum high temperature furnace again and carry out sintering, sintering temperature is 700～800 ℃, and the time is 1 hour, carry out the normal temperature cooling behind the sintering, answer the repoussage type with described press again after coming out of the stove;
The 3rd step, the object behind the multiple repoussage type is put into the High Temperature Furnaces Heating Apparatus sintering again, sintering temperature is 800～850 ℃, the time is 2 hours, after the taking-up, puts into mould and is squeezed into sheet material;
The 4th step, described sheet material is carried out cold rolling, annealing, at surface recombination one deck scolder, cold rolling leveling is made contact with the lathe punching press at last, then carries out surface finish and processes.
Compared with the prior art, beneficial effect of the present invention is embodied in: owing to adopt the environmental protection electric contact material of rare earth powder metallurgy, under the prerequisite that has kept good electroconductibility and thermal conductivity and low-resistivity, also the copper matrix there is obvious strengthening effect, anti-electrocorrosion and the resistance to blocking of contact have been improved, the breaking capacity of contact is strong, applicable to the disjunction of high current.
Especially, in the described the first step, the material that mixes is put into mixed the rolling that high energy mixing drum machine carried out 3 hours.By 3 hours mixed rolling, be conducive to rearrangement and the displacement of powder particle, compactness improves, the sealed porosity that elimination may form.
Especially, described press is 300～350 tons oil press.
Especially, described mould is the mould of 650 tons of extrusion machines.By extrusion process, further improve the distribution of contact material composition in the copper matrix, improve the erosion resistance of contact material.
Especially, in described the 4th step, adopt the hot high pressure spraying machine to spray one deck silver phosphorus braze at described material surface.
Embodiment
Below in conjunction with embodiment the present invention is done detailed description again.
Embodiment one
A kind of copper-base contact material, comprise following composition, the yttrium of 0.002% (weight), the bismuth of 0.003% (weight), the titanium of 0.001% (weight), the molybdenum of 0.002% (weight), the tellurium of 0.02% (weight), the lanthanum of 0.005% (weight), the graphite of 0.05% (weight), the aluminium of 0.02% (weight) and the copper of surplus.
A kind of manufacture craft of copper-base contact material,
The first step, by weight percentage, with the yttrium of 0.002% (weight), the bismuth of 0.003% (weight), the titanium of 0.001% (weight), the molybdenum of 0.002% (weight), the tellurium of 0.02% (weight), the lanthanum of 0.005% (weight), the graphite of 0.05% (weight), the aluminium of 0.02% (weight) and the copper of surplus carry out abundant mix and blend, and the material that mixes is put into mixed the rolling that high energy mixing drum machine carried out 3 hours.
Second step is put into pressing die with the powdered material that mixes, and is pressed into the round shape that splits with 300 tons oil presses, put into vacuum high temperature furnace again and carry out sintering, sintering temperature is 800 ℃, and the time is 1 hour, carry out normal temperature cooling behind the sintering, after coming out of the stove again the oil press with 350 tons answer the repoussage type;
The 3rd step, the object behind the multiple repoussage type is put into the High Temperature Furnaces Heating Apparatus sintering again, sintering temperature is 850 ℃, the time is 2 hours, after the taking-up, puts into 650 tons of moulds on the extrusion machine and is squeezed into into sheet material;
The 4th step, sheet material is carried out cold rolling, annealing, adopt the hot high pressure spraying machine to spray one deck silver phosphorus braze at material surface, cold rolling leveling is made contact with the lathe punching press at last, then carries out surface finish and processes.
After testing, gained contact material resistivity is 2.4～2.8 μ Ω .cm, and hardness is 40～60HB, and density is 8.30～8.40g/cm
3
Embodiment two
A kind of copper-base contact material, comprise following composition, the yttrium of 0.005% (weight), the bismuth of 0.005% (weight), the titanium of 0.008% (weight), the molybdenum of 0.002% (weight), the tellurium of 0.04% (weight), the lanthanum of 0.008% (weight), the graphite of 0.05% (weight), the aluminium of 0.03% (weight) and the copper of surplus.
A kind of manufacture craft of copper-base contact material,
The first step, by weight percentage, with the yttrium of 0.005% (weight), the bismuth of 0.005% (weight), the titanium of 0.008% (weight), the molybdenum of 0.002% (weight), the tellurium of 0.04% (weight), the lanthanum of 0.008% (weight), the graphite of 0.05% (weight), the aluminium of 0.03% (weight) and the copper of surplus carry out abundant mix and blend, and the material that mixes is put into mixed the rolling that high energy mixing drum machine carried out 3 hours.
Second step is put into pressing die with the powdered material that mixes, and is pressed into the round shape that splits with 300 tons oil presses, put into vacuum high temperature furnace again and carry out sintering, sintering temperature is 700 ℃, and the time is 1 hour, carry out normal temperature cooling behind the sintering, after coming out of the stove again the oil press with 350 tons answer the repoussage type;
The 3rd step, the object behind the multiple repoussage type is put into the High Temperature Furnaces Heating Apparatus sintering again, sintering temperature is 800 ℃, the time is 2 hours, after the taking-up, puts into 650 tons of moulds on the extrusion machine and is squeezed into into sheet material;
The 4th step, sheet material is carried out cold rolling, annealing, adopt the hot high pressure spraying machine to spray one deck silver phosphorus braze at material surface, cold rolling leveling is made contact with the lathe punching press at last, then carries out surface finish and processes.
After testing, gained contact material resistivity is 2.4～2.8 μ Ω .cm, and hardness is 40～60HB, and density is 8.30～8.40g/cm
3
Embodiment three
A kind of copper-base contact material, comprise following composition, the yttrium of 0.008% (weight), the bismuth of 0.002% (weight), the titanium of 0.006% (weight), the molybdenum of 0.004% (weight), the tellurium of 0.05% (weight), the lanthanum of 0.003% (weight), the graphite of 0.04% (weight), the aluminium of 0.02% (weight) and the copper of surplus.
A kind of manufacture craft of copper-base contact material,
The first step, by weight percentage, with the yttrium of 0.008% (weight), the bismuth of 0.002% (weight), the titanium of 0.006% (weight), the molybdenum of 0.004% (weight), the tellurium of 0.05% (weight), the lanthanum of 0.003% (weight), the graphite of 0.04% (weight), the aluminium of 0.02% (weight) and the copper of surplus carry out abundant mix and blend, and the material that mixes is put into mixed the rolling that high energy mixing drum machine carried out 3 hours.
Second step is put into pressing die with the powdered material that mixes, and is pressed into the round shape that splits with 300 tons oil presses, put into vacuum high temperature furnace again and carry out sintering, sintering temperature is 750 ℃, and the time is 1 hour, carry out normal temperature cooling behind the sintering, after coming out of the stove again the oil press with 350 tons answer the repoussage type;
The 3rd step, the object behind the multiple repoussage type is put into the High Temperature Furnaces Heating Apparatus sintering again, sintering temperature is 850 ℃, the time is 2 hours, after the taking-up, puts into 650 tons of moulds on the extrusion machine and is squeezed into into sheet material;
The 4th step, sheet material is carried out cold rolling, annealing, adopt the hot high pressure spraying machine to spray one deck silver phosphorus braze at material surface, cold rolling leveling is made contact with the lathe punching press at last, then carries out surface finish and processes.
After testing, gained contact material resistivity is 2.4～2.8 μ Ω .cm, and hardness is 40～60HB, and density is 8.30～8.40g/cm
3
Claims (8)
1. copper-base contact material, it is characterized in that: comprise following composition, the yttrium of～0.1% 0.002 (weight), the bismuth of～0.08% 0.002 (weight), the titanium of 0.001～0.5% (weight), the molybdenum of 0.001～0.5% (weight), the tellurium of～0.1% 0.001 (weight), the lanthanum of～0.5% 0.003 (weight), the graphite of 0.03～1.0% (weight), the aluminium of 0.01～0.2% (weight) and the copper of surplus.
2. copper-base contact material according to claim 1, it is characterized in that: the weight percent of described yttrium is 0.002%, the weight percent of described bismuth is 0.003%, the weight percent of described titanium is 0.001%, the weight percent of described molybdenum is 0.002%, and the weight percent of described tellurium is 0.02%, and the weight percent of described lanthanum is 0.005%, the weight percent of described graphite is 0.05%, and the weight percent of described aluminium is 0.02%.
3. the manufacture craft of a copper-base contact material is characterized in that:
The first step by weight percentage, will contain yttrium 0.002～0.1%, bismuth 0.002～0.08%, titanium 0.001～0.5%, molybdenum 0.001～0.5%, tellurium 0.001～0.1%, lanthanum 0.003～0.5%, graphite 0.03～1.0%, the copper powder of aluminium 0.01～0.2% and surplus carries out abundant mix and blend;
Second step is put into pressing die with the powdered material that mixes, and is pressed into the round shape that splits with press, put into vacuum high temperature furnace again and carry out sintering, sintering temperature is 700～800 ℃, and the time is 1 hour, carry out the normal temperature cooling behind the sintering, answer the repoussage type with described press again after coming out of the stove;
The 3rd step, the object behind the multiple repoussage type is put into the High Temperature Furnaces Heating Apparatus sintering again, sintering temperature is 800～850 ℃, the time is 2 hours, after the taking-up, puts into mould and is squeezed into sheet material;
The 4th step, described sheet material is carried out cold rolling, annealing, at surface recombination one deck scolder, cold rolling leveling is made contact with the lathe punching press at last, then carries out surface finish and processes.
4. the manufacture craft of copper-base contact material according to claim 3 is characterized in that: in the described the first step, the material that mixes is put into mixed the rolling that high energy mixing drum machine carried out 3 hours.
5. according to claim 3 or the manufacture craft of 4 described copper-base contact materials, it is characterized in that: described press is 300～350 tons oil press.
6. according to claim 3 or the manufacture craft of 4 described copper-base contact materials, it is characterized in that: described mould is the mould of 650 tons of extrusion machines.
7. the manufacture craft of copper-base contact material according to claim 5, it is characterized in that: described mould is the mould of 650 tons of extrusion machines.
8. according to claim 3 or the manufacture craft of 4 described copper-base contact materials, it is characterized in that: in described the 4th step, adopt the hot high pressure spraying machine to spray one deck silver phosphorus braze at described material surface.
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104480341A (en) * | 2014-11-28 | 2015-04-01 | 山东中佳新材料有限公司 | Heat-resistant and corrosion-resistant polybasic copper alloy and preparation system thereof |
| CN105023774A (en) * | 2015-07-03 | 2015-11-04 | 济南大学 | Copper-based electric contact layered composite material and preparation method thereof |
| CN105063413A (en) * | 2015-07-29 | 2015-11-18 | 温州银泰合金材料有限公司 | Copper-based electric contact material and manufacturing technology thereof |
| CN105140057A (en) * | 2015-07-03 | 2015-12-09 | 济南大学 | Nitride enhanced copper-based electrical contact composite material |
| CN105551839A (en) * | 2016-02-26 | 2016-05-04 | 济南大学 | Copper-plated graphene/copper-based electrical contact material and preparation method thereof |
| CN106282643A (en) * | 2015-06-12 | 2017-01-04 | 济南大学 | A kind of cuprio electric contact composite material and vacuum hot-pressing process thereof |
| CN106356265A (en) * | 2016-11-15 | 2017-01-25 | 沈阳新同正复合材料有限公司 | Compound contact with higher welding resistance and high arc burning loss resistance |
| CN106783240A (en) * | 2016-11-15 | 2017-05-31 | 沈阳新同正复合材料有限公司 | Aftercurrent protection circuit breaker composite contact with fusion welding resisting ability high |
| CN106783241A (en) * | 2016-11-15 | 2017-05-31 | 沈阳新同正复合材料有限公司 | A kind of composite contact with electric life high breaking long |
| CN112820569A (en) * | 2021-01-07 | 2021-05-18 | 中国民用航空飞行学院 | Preparation process of copper-based powder contact and relay formed by contact prepared by preparation process |
| CN113161165A (en) * | 2021-03-05 | 2021-07-23 | 泰州泰锦合金材料有限公司 | Copper alloy material for movable contact spring of high-voltage relay contact |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104480341A (en) * | 2014-11-28 | 2015-04-01 | 山东中佳新材料有限公司 | Heat-resistant and corrosion-resistant polybasic copper alloy and preparation system thereof |
| CN106282643A (en) * | 2015-06-12 | 2017-01-04 | 济南大学 | A kind of cuprio electric contact composite material and vacuum hot-pressing process thereof |
| CN105023774A (en) * | 2015-07-03 | 2015-11-04 | 济南大学 | Copper-based electric contact layered composite material and preparation method thereof |
| CN105140057A (en) * | 2015-07-03 | 2015-12-09 | 济南大学 | Nitride enhanced copper-based electrical contact composite material |
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| CN106783240A (en) * | 2016-11-15 | 2017-05-31 | 沈阳新同正复合材料有限公司 | Aftercurrent protection circuit breaker composite contact with fusion welding resisting ability high |
| CN106783241A (en) * | 2016-11-15 | 2017-05-31 | 沈阳新同正复合材料有限公司 | A kind of composite contact with electric life high breaking long |
| CN112820569A (en) * | 2021-01-07 | 2021-05-18 | 中国民用航空飞行学院 | Preparation process of copper-based powder contact and relay formed by contact prepared by preparation process |
| CN112820569B (en) * | 2021-01-07 | 2022-10-14 | 中国民用航空飞行学院 | Preparation process of copper-based powder contact and relay composed of prepared contacts |
| CN113161165A (en) * | 2021-03-05 | 2021-07-23 | 泰州泰锦合金材料有限公司 | Copper alloy material for movable contact spring of high-voltage relay contact |
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