CN107586979A - A kind of microalloying of rare earth high conductivity copper alloy and preparation method thereof - Google Patents
A kind of microalloying of rare earth high conductivity copper alloy and preparation method thereof Download PDFInfo
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- CN107586979A CN107586979A CN201710894243.8A CN201710894243A CN107586979A CN 107586979 A CN107586979 A CN 107586979A CN 201710894243 A CN201710894243 A CN 201710894243A CN 107586979 A CN107586979 A CN 107586979A
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Abstract
The invention discloses a kind of microalloying of rare earth high conductivity process for producing copper alloy, comprise the following steps：S01：Cathode copper, copper zinc intermediate alloy, copper manganese intermediate alloy and copper lanthanum intermediate alloy, which are compared, according to Mole percent carries out dispensing preparation melting；S02：The cathode copper prepared is placed in crucible；S03：After copper weld pool to be electrolysed is complete, copper zinc intermediate alloy and copper manganese intermediate alloy are added into liquid electrolyte copper, continues melting；S04：Copper zinc intermediate alloy and copper manganese intermediate alloy to be added and melting it is complete after, into liquid metal liquid add copper lanthanum intermediate alloy, continue melting；S05：Liquid metal is poured into mould after the abundant melting of above-mentioned alloy, cooling and demolding.The invention also discloses a kind of microalloying of rare earth high conductivity copper alloy, obtained by above-mentioned preparation method.A kind of microalloying of rare earth high conductivity copper alloy of the present invention, conductance height, good mechanical properties, production cost is low and has stable high-temperature performance.
Description
Technical field
The present invention is related to more particularly to a kind of microalloying of rare earth high conductivity copper alloy and preparation method thereof, belongs to high-performance
Copper alloy field.
Background technology
Fine copper is about 8.9g/cm as a kind of metal material for possessing excellent conductive thermal conductivity, its density3﹐ fusing points are high
Up to 1083 DEG C.It not only has excellent electrical and thermal conductivity in terms of physical property, and possesses good ductility, is changing
Learning aspect of performance also has preferable corrosion resistance.Formed using fine copper metal by matrix and after adding one or more of other elements
Alloy be copper alloy, its performance is more more excellent than fine copper, has higher electrical and thermal conductivity, more preferable ductility and anti-corrosion
Property [1].At present, copper alloy with high strength and high conductivity as a kind of by the Novel copper alloy of research and development emphatically, due to its high intensity,
The highly conductive and premium properties of high heat conduction, machinery production, electric and electronic engineering have been widely used in it, light industry produces and some
Among building trade.And with fast development economic in world wide, the consumption figure of copper is also being constantly increasing.
But also with the presence of the problem of some copper alloy intensity are not high, electric conductivity is relatively low and resistance to elevated temperatures is excessively poor.Such as
The alloy of copper chromium and this kind of precipitation strength type of copper zirconium and some cupro-nickel silicon, cupro-nickel zinc and copper-titanium alloy, although its intensity is enough,
Or there is the defects of electric conductivity is relatively low, resistance to elevated temperatures is excessively poor, its anti-softening temperature only has 400 DEG C or so.Industry at present
High intensity, the method for high-conductivity copper alloy are prepared in production all it is sacrifices a certain degree of conductance so as to improve copper alloy
Mechanical property, therefore how to become obstruction copper alloy retaining copper and improve its electric conductivity while copper alloy good characteristic
One obstacle of development.
The content of the invention
The technical problem to be solved in the present invention is that solve the deficiencies in the prior art, there is provided a kind of conductance is high, mechanical property
Well, production cost is low and the manufacture method of microalloying of rare earth high-conductivity copper alloy that has stable high-temperature performance, manufactures
Copper alloy disclosure satisfy that the requirement to conductive copper alloy electric conductivity and mechanical property in commercial Application.
In order to solve the above technical problems, the technical solution adopted by the present invention is：
A kind of microalloying of rare earth high conductivity process for producing copper alloy, comprises the following steps：
S01：Cathode copper, copper zinc intermediate alloy, copper manganese intermediate alloy and copper lanthanum intermediate alloy are compared according to Mole percent
Carry out dispensing and prepare melting；
S02：The cathode copper prepared is placed in crucible, reaches 1 × 10 using vacuum resistance furnace-2MPa to 1 × 10-3MPa
Low vacuum state, heating-up temperature be 1210~1280 DEG C at carry out melting；
S03：After copper weld pool to be electrolysed is complete, copper zinc intermediate alloy and copper manganese intermediate alloy are added into liquid electrolyte copper,
And keep 1 × 10-2MPa to 1 × 10-3MPa low vacuum state, temperature continue to melt under conditions of being 1250~1350 DEG C
Refining；
S04：Copper zinc intermediate alloy and copper manganese intermediate alloy to be added and melting it is complete after, add copper into liquid metal liquid
Lanthanum intermediate alloy, and keep 1 × 10-2MPa to 1 × 10-3MPa low vacuum state, temperature drop to 1180~1250 DEG C of condition
Under continue melting；
S05：Liquid metal is poured into mould after the abundant melting of above-mentioned alloy, cooling and demolding.
In S03, the molar fraction of zinc accounts for more than 50% in the copper zinc intermediate alloy, manganese in the copper manganese intermediate alloy
Molar fraction accounts for more than 40%.
In S04, the molar fraction of lanthanum accounts for more than 20% in the copper lanthanum intermediate alloy.
In S02, S03 and S04, the quality for the copper alloy that alloy melting time t is synthesized on demand is estimated, reduction formula
For：T=Km1/2, in formula, K represents the System modulus of copper-zinc-manganese-lanthanum, and span is 1000~1500s/ (kg1/2)；M is
Need the quality of copper alloy synthesized, unit kg.
A kind of microalloying of rare earth high conductivity copper alloy is high using a kind of any of the above one kind microalloying of rare earth
Conductance process for producing copper alloy is prepared.
Each composition and its atom percentage content are in the microalloying of rare earth high conductivity copper alloy being prepared：Carbon：
0.15~0.33；Zinc：18.8~27.4；Manganese：13.8~20.4；Lanthanum：4.2~9.7；Other it is inevitable it is miscellaneous≤0.035；Copper：
Its surplus.
Beneficial effects of the present invention：The present invention proposes a kind of microalloying of rare earth high-conductivity copper alloy, and the alloy is relative
For other conductive copper alloys, formed in grain boundaries and have highly conductive and good mechanical properties nano-scale Ternary copper zinc lanthanums concurrently
Interphase, the mechanical property of copper alloy is being kept to improve its electric conductivity simultaneously, it is simultaneous while making alloy that there is high conductivity
Have good mechanical property, greatly widened the use range of such alloy.
1st, cathode copper is chosen in melting, copper zinc intermediate alloy, copper manganese intermediate alloy and copper lanthanum intermediate alloy are raw material, melting
Method uses first melting cathode copper, adds copper zinc intermediate alloy and copper manganese intermediate alloy continues melting, be eventually adding in copper lanthanum
Between alloy melting obtain the preparation technology of final products.Copper-zinc-manganese-lanthanum element energy of the alloy in melting liquid metal at initial stage
Enough fully diffusions, are uniformly distributed so that metal ingredient is uniform after solidification, and raw material is added in the form of intermediate alloy, melting loss of elements
It is few.In process of setting, because copper alloy grain surface can constantly be expanded, and three zinc in alloy, manganese, lanthanum element accountings compared with
It is more, can not be solid-solution in completely in Copper substrate, can cause zinc, manganese, lanthanum alloy grain boundaries segregation and separate out thermodynamically stable
Ternary copper zinc lanthanum interphase, reduce the surface energy of crystal boundary.Meanwhile under the surface energy effect of crystal boundary, hinder Ternary copper zinc lanthanum
Growing up after interphase forming core, causes phase size to only reach Nano grade.
2nd, copper alloy of the invention forms in grain boundaries and has highly conductive and good mechanical properties nano-scale Ternary coppers concurrently
Zinc lanthanum interphase.Because phase size is Nano grade among copper zinc lanthanum, there is excellent mechanical property, it is present in grain boundaries energy
Enough mechanical properties to alloy play invigoration effect.On the other hand, copper zinc lanthanum interphase belongs to polyelectron layer phase, has more
Free electron, it is present in alloy grain boundaries and effect is greatly enhanced to the electric conductivity person of having of alloy.Therefore so that alloy is simultaneous
Have good mechanical property and electric conductivity.
3rd, stock utilization of the present invention is high, and power consumption is low, and with short production cycle, production cost is low, can realize automated production, change
Kind working condition.Process above process is to be combined to complete whole production process on a flow production line by some units, single
Robotic arm, conveyer belt transmit blank automatically between machine (process).Blank need not heat repeatedly, energy-saving and emission-reduction, realize green
Manufacture.
In summary, microalloying of rare earth high conductivity copper alloy of the invention and its manufacture method, from intermediate alloy
For raw material, and batch (-type) melting, formed in grain boundaries and have highly conductive and good mechanical properties nano-scale Ternary copper zinc lanthanums concurrently
Interphase, the mechanical property of copper alloy is being kept to improve its electric conductivity simultaneously, it is simultaneous while making alloy that there is high conductivity
Has good mechanical property, the copper alloy manufactured disclosure satisfy that in commercial Application to conductive copper alloy electric conductivity and mechanical property
The requirement of energy.
Brief description of the drawings
Fig. 1 is the copper alloy obtained using a kind of microalloying of rare earth high conductivity process for producing copper alloy of the present invention
SEM schemes.
Embodiment
The invention will be further described below in conjunction with the accompanying drawings, and following examples are only used for clearly illustrating the present invention
Technical scheme, and can not be limited the scope of the invention with this.
Specific embodiment 1
Calculated again using the gross mass of copper alloy for needing to synthesize as 10kg ingot, according to Mole percent compare cathode copper,
Copper zinc intermediate alloy (Zn content 50%), copper manganese intermediate alloy (manganese content 40%) and copper lanthanum intermediate alloy (lanthanum content
Prepare melting 20%) to carry out dispensing.
The cathode copper prepared is placed in crucible, carried out using vacuum resistance furnace 1 × 10-2MPa low vacuum state, adds
Hot temperature carries out meltings, smelting time 53min to 1280 DEG C；Then, into liquid electrolyte copper add copper zinc intermediate alloy and
Copper manganese intermediate alloy, and keep 1 × 10-2MPa low vacuum state, temperature continue melting under conditions of being 1350 DEG C
53min；Copper lanthanum intermediate alloy is added in most backward liquid metal liquid, and keeps 1 × 10-2MPa low vacuum state, temperature drop to
Continue melting 53min under conditions of 1250 DEG C.
Liquid metal is poured into mould after the abundant melting of above-mentioned alloy, the dilute of the present invention is obtained after cooling and demolding
Native microalloying high-conductivity copper alloy.
Specific embodiment 2：
Calculated again using the gross mass of copper alloy for needing to synthesize as 20kg ingot, according to Mole percent compare cathode copper,
(lanthanum content is for copper zinc intermediate alloy (Zn content 55%), copper manganese intermediate alloy (manganese content 45%) and copper lanthanum intermediate alloy
25%) carry out dispensing and prepare melting.
The cathode copper prepared is placed in crucible and carried out using vacuum resistance furnace 1 × 10-3MPa low vacuum state, adds
Hot temperature carries out meltings, smelting time 93min to 1250 DEG C；Then, into liquid electrolyte copper add copper zinc intermediate alloy and
Copper manganese intermediate alloy, and keep 1 × 10-3MPa low vacuum state, temperature continue melting under conditions of being 1300 DEG C
93min；Copper lanthanum intermediate alloy is added in most backward liquid metal liquid, and keeps 1 × 10-3MPa low vacuum state, temperature drop to
Continue melting 93min under conditions of 1200 DEG C.
Liquid metal is poured into mould after the abundant melting of above-mentioned alloy, obtains the present invention's after cooling and demolding
Microalloying of rare earth high-conductivity copper alloy.
Specific embodiment 3：
Calculated again using the gross mass of copper alloy for needing to synthesize as 30kg ingot, according to Mole percent compare cathode copper,
(lanthanum content is for copper zinc intermediate alloy (Zn content 60%), copper manganese intermediate alloy (manganese content 50%) and copper lanthanum intermediate alloy
30%) carry out dispensing and prepare melting.
The cathode copper prepared is placed in crucible and carried out using vacuum resistance furnace 5 × 10-3MPa low vacuum state, adds
Hot temperature carries out meltings, smelting time 137min to 1210 DEG C；Then, into liquid electrolyte copper add copper zinc intermediate alloy and
Copper manganese intermediate alloy, and keep 5 × 10-3MPa low vacuum state, temperature continue melting under conditions of being 1250 DEG C
137min；Copper lanthanum intermediate alloy is added in most backward liquid metal liquid, and keeps 5 × 10-3MPa low vacuum state, temperature drop
Continue melting 137min under conditions of to 1180.
Liquid metal is poured into mould after the abundant melting of above-mentioned alloy, obtains the present invention's after cooling and demolding
Microalloying of rare earth high-conductivity copper alloy.
As shown in figure 1, using the preparation method of the present invention, the phase chi of obtained microalloying of rare earth high conductivity copper alloy
It is very little to only reach Nano grade.
Table 1 is to obtain microalloying of rare earth high conductivity copper alloy combination property data comparison by above-mentioned manufacture method.
As shown in Table 1, above-mentioned 3 embodiment products are contrasted with international technical norms requirement, the product electric conductivity that the present invention obtains
Can be with mechanical property far above international technical norms requirement.The copper alloy manufactured disclosure satisfy that in commercial Application to conductive copper
The requirement of alloy conductive and mechanical property.
The microalloying of rare earth high conductivity copper alloy combination property data comparison of table 1
Described above is only the preferred embodiment of the present invention, it should be pointed out that：For the ordinary skill people of the art
For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (6)
- A kind of 1. microalloying of rare earth high conductivity process for producing copper alloy, it is characterised in that：Comprise the following steps：S01：Cathode copper, copper zinc intermediate alloy, copper manganese intermediate alloy and copper lanthanum intermediate alloy are compared according to Mole percent to carry out Dispensing prepares melting；S02：The cathode copper prepared is placed in crucible, reaches 1 × 10 using vacuum resistance furnace-2MPa to 1 × 10-3MPa's is low Vacuum state, heating-up temperature are to carry out melting at 1210~1280 DEG C；S03：After copper weld pool to be electrolysed is complete, copper zinc intermediate alloy and copper manganese intermediate alloy are added into liquid electrolyte copper, and protect Hold 1 × 10-2MPa to 1 × 10-3MPa low vacuum state, temperature continue melting under conditions of being 1250~1350 DEG C；S04：Copper zinc intermediate alloy and copper manganese intermediate alloy to be added and melting it is complete after, into liquid metal liquid add copper lanthanum in Between alloy, and keep 1 × 10-2MPa to 1 × 10-3MPa low vacuum state, temperature drop to 1180~1250 DEG C under conditions of after It is continuous to carry out melting；S05：Liquid metal is poured into mould after the abundant melting of above-mentioned alloy, cooling and demolding.
- A kind of 2. microalloying of rare earth high conductivity process for producing copper alloy according to claim 1, it is characterised in that： In S03, the molar fraction of zinc accounts for more than 50% in the copper zinc intermediate alloy, the molar fraction of manganese in the copper manganese intermediate alloy Account for more than 40%.
- A kind of 3. microalloying of rare earth high conductivity process for producing copper alloy according to claim 1, it is characterised in that： In S04, the molar fraction of lanthanum accounts for more than 20% in the copper lanthanum intermediate alloy.
- A kind of 4. microalloying of rare earth high conductivity process for producing copper alloy according to claim 1, it is characterised in that： In S02, S03 and S04, the quality for the copper alloy that alloy melting time t is synthesized on demand is estimated that reduction formula is：T= K·m1/2, in formula, K represents the System modulus of copper-zinc-manganese-lanthanum, and span is 1000~1500s/ (kg1/2)；M is to need to close Into copper alloy quality, unit kg.
- A kind of 5. microalloying of rare earth high conductivity copper alloy, it is characterised in that：It is micro- using a kind of any of the above described rare earth Alloying high conductivity process for producing copper alloy is prepared.
- A kind of 6. microalloying of rare earth high conductivity copper alloy according to claim 5, it is characterised in that：It is prepared Each composition and its atom percentage content are in microalloying of rare earth high conductivity copper alloy：Carbon：0.15~0.33；Zinc：18.8 ~27.4；Manganese：13.8~20.4；Lanthanum：4.2~9.7；Other it is inevitable it is miscellaneous≤0.035；Copper：Its surplus.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110819868A (en) * | 2018-08-10 | 2020-02-21 | 南京工程学院 | Magnetic memory alloy with long functional life and preparation method thereof |
| CN113755714A (en) * | 2021-06-22 | 2021-12-07 | 上海交通大学 | High-thermal-conductivity copper alloy suitable for casting process and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101899588A (en) * | 2010-08-25 | 2010-12-01 | 江西理工大学 | Nickel-free white copper alloy containing rare earth additional elements and method for manufacturing plates made of same |
| CN105220010A (en) * | 2015-10-30 | 2016-01-06 | 苏州列治埃盟新材料技术转移有限公司 | A kind of lead-free rare-earth Alloy Materials compo pipe and preparation method thereof |
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2017
- 2017-09-28 CN CN201710894243.8A patent/CN107586979B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101899588A (en) * | 2010-08-25 | 2010-12-01 | 江西理工大学 | Nickel-free white copper alloy containing rare earth additional elements and method for manufacturing plates made of same |
| CN105220010A (en) * | 2015-10-30 | 2016-01-06 | 苏州列治埃盟新材料技术转移有限公司 | A kind of lead-free rare-earth Alloy Materials compo pipe and preparation method thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110819868A (en) * | 2018-08-10 | 2020-02-21 | 南京工程学院 | Magnetic memory alloy with long functional life and preparation method thereof |
| CN113755714A (en) * | 2021-06-22 | 2021-12-07 | 上海交通大学 | High-thermal-conductivity copper alloy suitable for casting process and preparation method thereof |
| CN113755714B (en) * | 2021-06-22 | 2022-08-19 | 上海交通大学 | High-thermal-conductivity copper alloy suitable for casting process and preparation method thereof |
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Effective date of registration: 20201216 Address after: No.7, Yangqiao 4th Road, Xianghe Town, Quanjiao County, Chuzhou City, Anhui Province Patentee after: ANHUI LEDA PRECISION ALLOY CO.,LTD. Address before: 1 No. 211167 Jiangsu city of Nanjing province Jiangning Science Park Hongjing Road Patentee before: NANJING INSTITUTE OF TECHNOLOGY |
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Denomination of invention: A Rare Earth Microalloyed High Conductivity Copper Alloy and Its Preparation Method Effective date of registration: 20221213 Granted publication date: 20190614 Pledgee: Quanjiao enterprise financing Company limited by guarantee Pledgor: ANHUI LEDA PRECISION ALLOY CO.,LTD. Registration number: Y2022980027108 |
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