CN105063413A - Copper-based electric contact material and manufacturing technology thereof - Google Patents
Copper-based electric contact material and manufacturing technology thereof Download PDFInfo
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- CN105063413A CN105063413A CN201510481097.7A CN201510481097A CN105063413A CN 105063413 A CN105063413 A CN 105063413A CN 201510481097 A CN201510481097 A CN 201510481097A CN 105063413 A CN105063413 A CN 105063413A
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Abstract
The invention relates to a copper-based electric contact material and a manufacturing technology thereof. The copper-based electric contact material comprises the following components including, by weight, 0.2% to 0.6% of magnesium, 0.05% to 0.3% of antimony, 0.05% to 0.4% of bismuth, 0.05% to 0.3% of tin, 0.05% to 0.3% of chromium, 0.005% to 0.05% of boron, 0.02% to 0.1% of lanthanum, 0.2% to 0.5% of graphite and the balanced copper. A proper amount of boron, tin and antimony powder is added, and while the good electrical conductivity is ensured, the strength and wear resistance of an electric contact finished product are improved, and the service life of the electric contact is prolonged; and in addition, due to adding of magnesium, in the machining process of the electric contact material, the material can be easily formed and machined.
Description
Technical field
The present invention relates to a kind of copper-based electrical contact material and preparation technology thereof, especially a kind of there is high breaking capacity, be suitable for alternating current contactor, isolating switch and air switch contact material used and preparation technology thereof.
Background technology
When high current load and large contact pressure, along with the opening and closing of contact, contact material can be caused to be out of shape and mechanical wear the surging force that contact produces, therefore contact material is needed to have suitable hardness and intensity, in addition, owing to contact will be processed into various specific shape, also specially require contact material and there is good processing characteristics.Therefore, when utilizing powder metallurgy to make contact material, in one-tenth component selections, should contribute to, while guarantee electroconductibility, strengthening hardness and the workability of made contact material.
Summary of the invention
The object of the invention is to the defect overcoming prior art, provide that a kind of electroconductibility is good, fastness to rubbing is high, the life-span is long and be easy to processing, the copper-based electrical contact material that plasticity is good and preparation technology thereof.
For achieving the above object, the present invention adopts a kind of copper-based electrical contact material, comprise following composition, the magnesium of 0.2 ~ 0.6% (weight), the antimony of 0.05 ~ 0.3% (weight), the bismuth of 0.05 ~ 0.4% (weight), the tin of 0.05 ~ 0.3% (weight), the chromium of 0.05 ~ 0.3% (weight), the boron of 0.005 ~ 0.05% (weight), the lanthanum of 0.02 ~ 0.1% (weight), the graphite of 0.2 ~ 0.5% (weight) and the copper of surplus.
Especially, the weight percent of described magnesium is 0.5%, the weight percent of described antimony is 0.1%, the weight percent of described bismuth is 0.2%, the weight percent of described tin is 0.1%, and the weight percent of described chromium is 0.1%, and the weight percent of described boron is 0.03%, the weight percent of described lanthanum is 0.1%, and the weight percent of described graphite is 0.3%.
The preparation technology of the copper-based electrical contact material that the present invention adopts:
The first step, by weight percentage, will containing magnesium 0.2 ~ 0.6%, antimony 0.05 ~ 0.3%, bismuth 0.05 ~ 0.4%, tin 0.05 ~ 0.3%, chromium 0.05 ~ 0.3%, boron 0.005 ~ 0.05%, lanthanum 0.02 ~ 0.1%, the copper powder of graphite 0.2 ~ 0.5% and surplus is put into mixed that mixed powder machine at a high speed carries out 2 hours and is rolled;
Second step, pours the powdered material mixed into compacting tool set, makes billet through colding pressing;
3rd step, puts into vacuum high temperature furnace by billet, adopts 700 ~ 800 DEG C of sintered heat insulatings to come out of the stove after 2 hours, again carries out colding pressing shaping after cooling;
4th step, puts into vacuum high temperature furnace again by the object after integer of again colding pressing, and adopts 700 DEG C of sintered heat insulatings 2 hours, after taking-up, directly puts on 650 tons of extrusion machines and is squeezed into sheet material;
5th step, adopts 750 DEG C to anneal insulation after 1.5 hours, cooling;
6th step, by the material work in-process of specification needed for the cold rolling one-tenth of sheet material of the 5th step gained, then adopts thermospray compound one weld layer on the half-finished surface of material.
7th step, the 6th step resulting materials is carried out leveling of colding pressing, and contact is made in punching press, then polished finish, oven dry.
Compared with the prior art, beneficial effect of the present invention is embodied in: by adding appropriate boron, tin, antimony powder end, can while ensureing good electroconductibility, improve intensity and the wear resistance of making electrical contact, extend the work-ing life of electrical contact, in addition, the interpolation of magnesium, also make electrical contact material in the preparation course of processing, be easy to formed machining.
Especially, in described second step, the equipment of colding pressing is 350 tons of oil presses.
Especially, in the 5th described step, cooled for annealing sheet material is carried out anneal again.By anneal again, eliminate the internal stress of electrical contact material widely, make it have more snappiness.
Embodiment
A kind of copper-based electrical contact material, comprise following composition, the magnesium of 0.6% (weight), the antimony of 0.05% (weight), the bismuth of 0.05 ~ 0.4% (weight), the tin of 0.05 ~ 0.3% (weight), the chromium of 0.05 ~ 0.3% (weight), the boron of 0.005 ~ 0.05% (weight), the lanthanum of 0.02 ~ 0.1% (weight), the graphite of 0.2 ~ 0.5% (weight) and the copper of surplus.Wherein, when the weight percent of magnesium is 0.5%, the weight percent of antimony is 0.1%, the weight percent of bismuth is 0.2%, and the weight percent of tin is 0.1%, and the weight percent of chromium is 0.1%, the weight percent of boron is 0.03%, the weight percent of lanthanum is 0.1%, and the weight percent of graphite is 0.3%, and the over-all properties of electrical contact reaches best.
A preparation technology for copper-based electrical contact material,
The first step, by weight percentage, will containing magnesium 0.2 ~ 0.6%, antimony 0.05 ~ 0.3%, bismuth 0.05 ~ 0.4%, tin 0.05 ~ 0.3%, chromium 0.05 ~ 0.3%, boron 0.005 ~ 0.05%, lanthanum 0.02 ~ 0.1%, the copper powder of graphite 0.2 ~ 0.5% and surplus is put into mixed that mixed powder machine at a high speed carries out 2 hours and is rolled;
Second step, pours the powdered material mixed into compacting tool set, colds pressing make billet through 350 tons of oil presses;
3rd step, puts into vacuum high temperature furnace by billet, adopts 700 ~ 800 DEG C of sintered heat insulatings to come out of the stove after 2 hours, again carries out colding pressing shaping after cooling;
4th step, puts into vacuum high temperature furnace again by the object after integer of again colding pressing, and adopts 700 DEG C of sintered heat insulatings 2 hours, after taking-up, directly puts on 650 tons of extrusion machines and is squeezed into sheet material;
5th step, adopts 750 DEG C to anneal insulation after 1.5 hours, cooling.Here, in order to reach higher snappiness, eliminating the internal stress of electrical contact material further, can anneal again be carried out;
6th step, by the material work in-process of specification needed for the cold rolling one-tenth of sheet material of the 5th step gained, then adopts thermospray compound one weld layer on the half-finished surface of material.
7th step, the 6th step resulting materials is carried out leveling of colding pressing, and contact is made in punching press, then polished finish, oven dry.
After testing, gained electrical 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 (5)
1. a copper-based electrical contact material, it is characterized in that: comprise following composition, the magnesium of 0.2 ~ 0.6% (weight), the antimony of 0.05 ~ 0.3% (weight), the bismuth of 0.05 ~ 0.4% (weight), the tin of 0.05 ~ 0.3% (weight), the chromium of 0.05 ~ 0.3% (weight), the boron of 0.005 ~ 0.05% (weight), the lanthanum of 0.02 ~ 0.1% (weight), the graphite of 0.2 ~ 0.5% (weight) and the copper of surplus.
2. copper-based electrical contact material according to claim 1, it is characterized in that: the weight percent of described magnesium is 0.5%, the weight percent of described antimony is 0.1%, the weight percent of described bismuth is 0.2%, the weight percent of described tin is 0.1%, and the weight percent of described chromium is 0.1%, and the weight percent of described boron is 0.03%, the weight percent of described lanthanum is 0.1%, and the weight percent of described graphite is 0.3%.
3. a preparation technology for copper-based electrical contact material, is characterized in that:
The first step, by weight percentage, will containing magnesium 0.2 ~ 0.6%, antimony 0.05 ~ 0.3%, bismuth 0.05 ~ 0.4%, tin 0.05 ~ 0.3%, chromium 0.05 ~ 0.3%, boron 0.005 ~ 0.05%, lanthanum 0.02 ~ 0.1%, the copper powder of graphite 0.2 ~ 0.5% and surplus is put into mixed that mixed powder machine at a high speed carries out 2 hours and is rolled;
Second step, pours the powdered material mixed into compacting tool set, makes billet through colding pressing;
3rd step, puts into vacuum high temperature furnace by billet, adopts 700 ~ 800 DEG C of sintered heat insulatings to come out of the stove after 2 hours, again carries out colding pressing shaping after cooling;
4th step, puts into vacuum high temperature furnace again by the object after integer of again colding pressing, and adopts 700 DEG C of sintered heat insulatings 2 hours, after taking-up, directly puts on 650 tons of extrusion machines and is squeezed into sheet material;
5th step, adopts 750 DEG C to anneal insulation after 1.5 hours, cooling;
6th step, by the material work in-process of specification needed for the cold rolling one-tenth of sheet material of the 5th step gained, then adopts thermospray compound one weld layer on the half-finished surface of material.
7th step, the 6th step resulting materials is carried out leveling of colding pressing, and contact is made in punching press, then polished finish, oven dry.
4. the preparation technology of copper-based electrical contact material according to claim 3, is characterized in that: in described second step, and the equipment of colding pressing is 350 tons of oil presses.
5. the preparation technology of the copper-based electrical contact material according to claim 3 or 4, is characterized in that: in the 5th described step, cooled for annealing sheet material is carried out anneal again.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107299246A (en) * | 2017-07-03 | 2017-10-27 | 江西理工大学 | A kind of high-strength highly-conductive Cu Cr Mg Sn Ce alloy wires and preparation method thereof |
Citations (5)
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| JPS63310930A (en) * | 1987-06-10 | 1988-12-19 | Furukawa Electric Co Ltd:The | Copper alloy for flexible print |
| CN102162045A (en) * | 2011-03-29 | 2011-08-24 | 温州银泰合金材料有限公司 | Electrical contact based on powdered copper and manufacturing process thereof |
| JP2012153938A (en) * | 2011-01-26 | 2012-08-16 | Kobe Steel Ltd | Cu-Ni-Si-BASED COPPER ALLOY EXCELLENT IN BENDABILITY AND STRESS RELAXATION RESISTANCE |
| CN102683713A (en) * | 2011-03-17 | 2012-09-19 | 日立电线株式会社 | Rolled copper foil for lithium ion secondary battery current collector |
| CN103352136A (en) * | 2013-07-07 | 2013-10-16 | 温州银泰合金材料有限公司 | Copper-based contact material and manufacturing process thereof |
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2015
- 2015-07-29 CN CN201510481097.7A patent/CN105063413A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63310930A (en) * | 1987-06-10 | 1988-12-19 | Furukawa Electric Co Ltd:The | Copper alloy for flexible print |
| JP2012153938A (en) * | 2011-01-26 | 2012-08-16 | Kobe Steel Ltd | Cu-Ni-Si-BASED COPPER ALLOY EXCELLENT IN BENDABILITY AND STRESS RELAXATION RESISTANCE |
| CN102683713A (en) * | 2011-03-17 | 2012-09-19 | 日立电线株式会社 | Rolled copper foil for lithium ion secondary battery current collector |
| CN102162045A (en) * | 2011-03-29 | 2011-08-24 | 温州银泰合金材料有限公司 | Electrical contact based on powdered copper and manufacturing process thereof |
| CN103352136A (en) * | 2013-07-07 | 2013-10-16 | 温州银泰合金材料有限公司 | Copper-based contact material and manufacturing process thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107299246A (en) * | 2017-07-03 | 2017-10-27 | 江西理工大学 | A kind of high-strength highly-conductive Cu Cr Mg Sn Ce alloy wires and preparation method thereof |
| CN107299246B (en) * | 2017-07-03 | 2018-10-12 | 江西理工大学 | A kind of high-strength highly-conductive Cu-Cr-Mg-Sn-Ce alloy wires and preparation method thereof |
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Application publication date: 20151118 |