CN103352136B - Copper-base contact material and manufacture craft - Google Patents
Copper-base contact material and manufacture craft Download PDFInfo
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- CN103352136B CN103352136B CN201310305052.5A CN201310305052A CN103352136B CN 103352136 B CN103352136 B CN 103352136B CN 201310305052 A CN201310305052 A CN 201310305052A CN 103352136 B CN103352136 B CN 103352136B
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Abstract
The present invention relates to a kind of copper-base contact material and manufacture craft, copper-base contact material comprises following composition, the yttrium of 0.002 ~ 0.1% (weight), the bismuth of 0.002 ~ 0.08% (weight), the titanium of 0.001 ~ 0.5% (weight), the molybdenum of 0.001 ~ 0.5% (weight), the tellurium of 0.001 ~ 0.1% (weight), the lanthanum of 0.003 ~ 0.5% (weight), the graphite of 0.03 ~ 1.0% (weight), the aluminium of 0.01 ~ 0.2% (weight) and the copper of surplus.Owing to adopting the environmental protection electric contact material of rare earth powder metallurgy, under the prerequisite maintaining good electroconductibility and thermal conductivity and low-resistivity, also there is obvious strengthening effect to Copper substrate, improve anti-electrocorrosion and the resistance to blocking of contact, the breaking capacity of contact is strong, is applicable to the disjunction of high current; Manufacture craft of the present invention adopt mixedly to roll, suppress, sinter, multiple pressure, sintering, extruding and cold rolling, be conducive to rearrangement and the displacement of powder particle, improve compactness, separately, also improve the distribution of contact material composition in Copper substrate, improve the erosion resistance of 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 Models of Contact Materials Used in Switches in the highest flight, and silver is a kind of scarce resource as precious metal to silver, is once making the cost of electrical contact can not be in any more.In recent years, exploitation copper base alloy replaced silver, and the contact material that can meet electrical contact performance is problem urgently to be resolved hurrily and perfect in the industry.
The electric property of copper-base contact material depends primarily on its composition and manufacture craft, due to, powder metallurgy process is easy to control material composition and quality, obtains and apply 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 how Optimization of Copper base contact material, reaches the comprehensive raising of electric property; Two, the manufacture craft of Optimization of Copper base contact material, avoids the pore because powder metallurgy process produces in contact material inside and defect to resist the impact of arc erosion.
Summary of the invention
The object of the invention is to the defect overcoming prior art, the copper-base contact material that a kind of composition and performance optimization coordinate is provided, and powder metallurgy process can be avoided the manufacture craft of the copper-base contact material that electrical contact performance has a negative impact.
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 0.001 ~ 0.5% (weight), the molybdenum of 0.001 ~ 0.5% (weight), the tellurium of 0.001 ~ 0.1% (weight), the lanthanum of 0.003 ~ 0.5% (weight), the graphite of 0.03 ~ 1.0% (weight), the aluminium of 0.01 ~ 0.2% (weight) and the copper of surplus.
Copper-base contact material of the present invention adopts proportioning to be below 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 preparation technology of the copper-base contact material that the present invention adopts:
The first step, by weight percentage, will containing 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, puts into pressing die by the powdered material mixed, and is pressed into billet shape with press, put into vacuum high temperature furnace again to sinter, sintering temperature is 700 ~ 800 DEG C, and the time is 1 hour, normal temperature cooling is carried out, again by the multiple repoussage type of described press after coming out of the stove after sintering;
3rd step, again puts into High Temperature Furnaces Heating Apparatus by the object after multiple repoussage type and sinters, and sintering temperature is 800 ~ 850 DEG C, and the time is 2 hours, after taking-up, puts into mould and is squeezed into sheet material;
4th step, described sheet material is carried out cold rolling, annealing, at surface recombination one deck solder, cold rolling leveling, finally makes contact with lathe punching press, then carries out surface finish process.
Compared with the prior art, beneficial effect of the present invention is embodied in: owing to adopting the environmental protection electric contact material of rare earth powder metallurgy, under the prerequisite maintaining good electroconductibility and thermal conductivity and low-resistivity, also there is obvious strengthening effect to Copper substrate, improve anti-electrocorrosion and the resistance to blocking of contact, the breaking capacity of contact is strong, is applicable to the disjunction of high current.
Especially, in the described the first step, the mode of described mix and blend the material mixed is put into mixed that high energy mixing drum machine carries out 3 hours to roll.Rolled by 3 hours mixed, be conducive to rearrangement and the displacement of powder particle, compactness improves, and eliminates the sealed porosity that may be formed.
Especially, described press is the oil press of 300 ~ 350 tons.
Especially, described mould is the mould of 650 tons of extrusion machines.By extrusion process, improve the distribution of contact material composition in Copper substrate further, improve the erosion resistance of contact material.
Especially, in the 4th described step, described solder is silver-colored phosphorus braze, and the equipment complex of described solder is hot high pressure spraying machine.
Embodiment
Below in conjunction with embodiment, the present invention is described in detail 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), graphite, the aluminium of 0.02% (weight) and the copper of surplus of (weight) of 0.05%.
A preparation technology for copper-base contact material,
The first step, by weight percentage, by 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 (weight) of 0.05%, the aluminium of 0.02% (weight) and the copper of surplus carry out abundant mix and blend, the material mixed are put into mixed that high energy mixing drum machine carries out 3 hours and roll.
Second step, puts into pressing die by the powdered material mixed, and is pressed into billet shape with the oil presses of 300 tons, put into vacuum high temperature furnace again to sinter, sintering temperature is 800 DEG C, and the time is 1 hour, normal temperature cooling is carried out, the multiple repoussage type of oil press again with 350 tons after coming out of the stove after sintering;
3rd step, again puts into High Temperature Furnaces Heating Apparatus by the object after multiple repoussage type and sinters, and sintering temperature is 850 DEG C, and the time is 2 hours, after taking-up, and the mould put on 650 tons of extrusion machines is squeezed into into sheet material;
4th step, carries out cold rolling, annealing by sheet material, adopt hot high pressure spraying machine to spray one deck silver phosphorus braze at material surface, cold rolling leveling, finally makes contact with lathe punching press, then carry out surface finish process.
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), graphite, the aluminium of 0.03% (weight) and the copper of surplus of (weight) of 0.05%.
A preparation technology for copper-base contact material,
The first step, by weight percentage, by 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 (weight) of 0.05%, the aluminium of 0.03% (weight) and the copper of surplus carry out abundant mix and blend, the material mixed are put into mixed that high energy mixing drum machine carries out 3 hours and roll.
Second step, puts into pressing die by the powdered material mixed, and is pressed into billet shape with the oil presses of 300 tons, put into vacuum high temperature furnace again to sinter, sintering temperature is 700 DEG C, and the time is 1 hour, normal temperature cooling is carried out, the multiple repoussage type of oil press again with 350 tons after coming out of the stove after sintering;
3rd step, again puts into High Temperature Furnaces Heating Apparatus by the object after multiple repoussage type and sinters, and sintering temperature is 800 DEG C, and the time is 2 hours, after taking-up, and the mould put on 650 tons of extrusion machines is squeezed into into sheet material;
4th step, carries out cold rolling, annealing by sheet material, adopt hot high pressure spraying machine to spray one deck silver phosphorus braze at material surface, cold rolling leveling, finally makes contact with lathe punching press, then carry out surface finish process.
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), graphite, the aluminium of 0.02% (weight) and the copper of surplus of (weight) of 0.04%.
A preparation technology for copper-base contact material,
The first step, by weight percentage, by 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 (weight) of 0.04%, the aluminium of 0.02% (weight) and the copper of surplus carry out abundant mix and blend, the material mixed are put into mixed that high energy mixing drum machine carries out 3 hours and roll.
Second step, puts into pressing die by the powdered material mixed, and is pressed into billet shape with the oil presses of 300 tons, put into vacuum high temperature furnace again to sinter, sintering temperature is 750 DEG C, and the time is 1 hour, normal temperature cooling is carried out, the multiple repoussage type of oil press again with 350 tons after coming out of the stove after sintering;
3rd step, again puts into High Temperature Furnaces Heating Apparatus by the object after multiple repoussage type and sinters, and sintering temperature is 850 DEG C, and the time is 2 hours, after taking-up, and the mould put on 650 tons of extrusion machines is squeezed into into sheet material;
4th step, carries out cold rolling, annealing by sheet material, adopt hot high pressure spraying machine to spray one deck silver phosphorus braze at material surface, cold rolling leveling, finally makes contact with lathe punching press, then carry out surface finish process.
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. a copper-base contact material, it is characterized in that: comprise following composition, the yttrium of 0.002 ~ 0.1% (weight), the bismuth of 0.002 ~ 0.08% (weight), the titanium of 0.001 ~ 0.5% (weight), the molybdenum of 0.001 ~ 0.5% (weight), the tellurium of 0.001 ~ 0.1% (weight), the lanthanum of 0.003 ~ 0.5% (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. a preparation technology for copper-base contact material, is characterized in that:
The first step, by weight percentage, will containing 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, puts into pressing die by the powdered material mixed, and is pressed into billet shape with press, put into vacuum high temperature furnace again to sinter, sintering temperature is 700 ~ 800 DEG C, and the time is 1 hour, normal temperature cooling is carried out, again by the multiple repoussage type of described press after coming out of the stove after sintering;
3rd step, again puts into High Temperature Furnaces Heating Apparatus by the object after multiple repoussage type and sinters, and sintering temperature is 800 ~ 850 DEG C, and the time is 2 hours, after taking-up, puts into mould and is squeezed into sheet material;
4th step, described sheet material is carried out cold rolling, annealing, at surface recombination one deck solder, cold rolling leveling, finally makes contact with lathe punching press, then carries out surface finish process.
4. the preparation technology of copper-base contact material according to claim 3, is characterized in that: in the described the first step, and the mode of described mix and blend the material mixed is put into mixed that high energy mixing drum machine carries out 3 hours to roll.
5. the preparation technology of the copper-base contact material according to claim 3 or 4, is characterized in that: described press is the oil press of 300 ~ 350 tons.
6. the preparation technology of the copper-base contact material according to claim 3 or 4, is characterized in that: described mould is the mould of 650 tons of extrusion machines.
7. the preparation technology of copper-base contact material according to claim 5, is characterized in that: described mould is the mould of 650 tons of extrusion machines.
8. the preparation technology of copper-base contact material according to claim 3, is characterized in that: in the 4th described step, and described solder is silver-colored phosphorus braze, and the equipment complex of described solder is hot high pressure spraying machine.
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| CN201310305052.5A CN103352136B (en) | 2013-07-07 | 2013-07-07 | Copper-base contact material and manufacture craft |
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| CN104480341B (en) * | 2014-11-28 | 2016-11-30 | 山东中佳新材料有限公司 | A kind of heat-proof corrosion-resistant polynary 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 |
| 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 |
| CN105551839B (en) * | 2016-02-26 | 2018-05-25 | 济南大学 | A kind of copper-plated graphite alkene/copper-based electrical contact material and preparation method thereof |
| 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 |
| 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 |
| 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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| EP0240513B1 (en) * | 1985-10-04 | 1991-01-30 | LONDON & SCANDINAVIAN METALLURGICAL CO LIMITED | Grain refining of copper-based alloys |
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