CN106702296A - Electromagnetic casting process applied to high-precision complex cupronickel ternary alloy production - Google Patents
Electromagnetic casting process applied to high-precision complex cupronickel ternary alloy production Download PDFInfo
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- CN106702296A CN106702296A CN201710075907.8A CN201710075907A CN106702296A CN 106702296 A CN106702296 A CN 106702296A CN 201710075907 A CN201710075907 A CN 201710075907A CN 106702296 A CN106702296 A CN 106702296A
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- electromagnetic
- copper
- ternary alloy
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- casting process
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F3/00—Changing the physical structure of non-ferrous metals or alloys by special physical methods, e.g. treatment with neutrons
- C22F3/02—Changing the physical structure of non-ferrous metals or alloys by special physical methods, e.g. treatment with neutrons by solidifying a melt controlled by supersonic waves or electric or magnetic fields
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C9/00—Alloys based on copper
- C22C9/04—Alloys based on copper with zinc as the next major constituent
Abstract
The invention belongs to the technical field of ternary alloy production application, and in particular relates to an electromagnetic casting process applied to high-precision complex cupronickel ternary alloy production. The process comprises the following steps: S1) cleaning a copper raw material and ingredients; S2) smelting the cleaned copper raw material and ingredients through a smelting furnace; and S3) firstly pouring a smelted solution in the step 2 into a device provided with an electromagnetic coil to generate an electromagnetic force for electromagnetic treatment. The electromagnetic casting process applied to high-precision complex cupronickel ternary alloy production provided by the invention has the beneficial effects that a liquid metal is solidified in a solid state; in co-melting of a solid and a liquid, the electromagnetic force is generated by the electromagnetic coil, and an electromagnetic field is applied to the metal to improve metal flow and distribution of a solute, so that the defects such as segregation on the surface of an ingot and in the ingot are effectively eliminated and fine and uniform crystal structures are obtained so as to improve the product quality, and therefore, the product yield is improved and the production and economical cost is lowered.
Description
Technical field
The invention belongs to alloy production processed and applied technical field, specifically relate to one kind and be applied to the complicated copper-nickel alloy ternary of high accuracy
Alloy production electromagnetic casting process, effectively eliminates the defects such as the segregation of ingot casting surface and inside, obtains careful, uniform crystallization
Tissue, with improve product quality, improves lumber recovery.
Background technology
Pure copper plus nickel belongs to bianry alloy, referred to as common copper-nickel alloy, this material have intensity higher, corrosion resistance, hardness,
Resistance and pyroelectricity, and reduce temperature coefficient of resistivity, therefore copper-nickel alloy is all different compared with the mechanical performance of other copper alloys, physical property
It is often good, ductility is good, hardness is high, color and luster is attractive in appearance, it is corrosion-resistant, be rich in deep drawability, be widely used in shipbuilding, oil
The fields such as work, electrical equipment, instrument, medicine equipment, commodity, handicraft, and still important resistance and thermocouple metal.And general
On the basis of logical copper-nickel alloy, other elements are added, such as the appropriate element of iron, manganese, aluminium, zinc, belong to ternary or more alloy, can enter one
Step improves the mechanical performance of material, following process ability, temperature-coefficient of electrical resistance, corrosion resistance in mobility seawater etc.,
This kind of copper-nickel alloy is referred to as complicated copper-nickel alloy, and structure copper-nickel alloy or precision electrical resistance alloy copper-nickel alloy are referred to as in commercial Application.
The production technology of current complicated copper-nickel alloy mainly includes pyrometallurgical smelting and Casting Technology and calendering and ties again
Brilliant annealing process technology, pyrometallurgical smelting is also called dry type metallurgy, is that ore and necessary additive are heated in stove together
High temperature, is molten into liquid, and the chemical reaction needed for generation, so as to isolate crude metal, then again refines crude metal.And it is complicated
Copper-nickel alloy is the unlimited solid solution each other that is, between cupro-nickel on the basis of common copper-nickel alloy, so as to form continuous solid solution, perseverance is α -- it is single
Phase alloy, on this basis, adds appropriate third element, between being blended in lattice, improves shape, the sequence of crystal grain, can obtain not
Same physical property and conductivity.The difficult point of this technology is, when the metallic element of different melting points and physical characteristic adds
When being added together, amalgamation is poor, and crystalline state is unstable, particularly the addition of the third element, is distributed in the crystal boundary of α metallographics
It is extremely unstable, the stabilization of the mechanical performance of influence properties for follow and finished product；Meanwhile, the uncertainty of casting process is influenceed,
Can cause to be mingled with, cold shut, the latent defect such as layering, directly result in following process product and produce a large amount of defects and scrap.
Rolling metal, also referred to as metal-pressed machine, i.e., obtained using metal plastic deformation produced under external force
There must be the production method of the raw material, blank or part of definite shape, size and mechanical property, also known as Metal Forming.
The microscopic structure of cast metals is general all very thick, by after pressure processing, the cause of material structure improves in energy refinement microstructure
Close property, so as to improve the mechanical performance of metal, can bear more complicated, harsher condition of work than casting, for example, bear more
Top load etc., therefore many important load part degree are manufactured using forging；And recrystallization annealing is will to add by cold deformation
More than the workpiece heat of work to recrystallization temperature, cooled down after held for some time, recrystallize workpiece, so as to eliminate processing
The technique of hardening, this technique is in the difficult point for being for ternary and above complexity copper-nickel alloy production, due to ternary above alloy
The uncertainty that each element is distributed between there is each lattice, when being easily caused follow-up plastic deformation, lattice fracture, this is accomplished by cold
When processing is directed to the distribution of drafts, the observation and analysis changed according to work-hardening capacity and to top layer microscopic structure, it is determined that
Recrystallization annealing, eliminates stage, temperature and the soaking time of processing hardening, and particularly in the cold working stage, calendering at high proportion is held
Be also easy to produce surface oxidation, be mingled with, the defect such as peeling and environmental damage, it is necessary to take various modes to eliminate surface defect, ability
The product for meeting client's needs is produced, this process excessively complicated and product quality is whard to control.In market economy
Under environment, manufacturer will also adjust corresponding working modulus and recrystallization degree, to obtain according to the demand of different clients
Different grain size and lattice distributions are obtained, the performance of End-Customer is met.
In prepared by above-mentioned copper ternary alloy three-partalloy, electromagnetic casting process is extremely important, and it belongs to the preparation of copper base raw material
Stage, the quality of this stage copper base raw material will directly affect the final product quality for subsequently being produced.
Therefore, based on above mentioned problem, the present invention provides one kind and is applied to the complicated copper-nickel alloy ternary alloy three-partalloy production electromagnetism of high accuracy
Casting technique.
The content of the invention
Goal of the invention：The complicated copper-nickel alloy ternary alloy three-partalloy production electromagnetism casting of high accuracy is applied to it is an object of the invention to provide one kind
Technique is made, it passes through liquid metal solidification into solid-state stage, when co-melting in solid-liquid, electromagnetic force is produced by magnet coil,
Apply electromagnetic field to metal to improve the distribution of metal flow and solute, effectively eliminate segregation of ingot casting surface and inside etc. and lack
Fall into, obtain careful, uniform crystalline structure, with improve product quality, improve lumber recovery, reduce production economy cost.
Technical scheme：The present invention puies forward kind of an one kind and is applied to the complicated copper-nickel alloy ternary alloy three-partalloy production electromagnetic casting process of high accuracy,
Comprise the following steps, step 1) copper raw material, dispensing are cleaned, surface impurity is removed, wherein, carried out using box cleaning case
Cleaning, cleaning water temperature is 20 degrees Celsius -30 degrees Celsius and air-dries standby；Step 2) will in step 1 clean after copper raw material, dispensing
Melting is carried out by smelting furnace；Step 3) solution after melting in step 2 is poured into first magnet coil generation electromagnetic force is installed
In device, when liquid metal solidification, into the solid-state stage, when co-melting in solid-liquid, is produced by magnet coil in melting solution containment
Raw electromagnetic force, electromagnetic field is applied to metal to improve the distribution of metal flow and solute, effectively eliminates ingot casting surface and inside
The defect such as segregation, obtain careful, uniform crystalline structure.
The technical program, the device that magnet coil produces electromagnetic force is installed in the step 3, its electrical current scope is
10A-30A, the electromagnetic force of generation is 3Hz-8Hz.
Compared with prior art, one kind of the invention is applied to the complicated copper-nickel alloy ternary alloy three-partalloy production electromagnetic casting work of high accuracy
The beneficial effect of skill is：It passes through liquid metal solidification into solid-state stage, when co-melting in solid-liquid, is produced by magnet coil
Raw electromagnetic force, electromagnetic field is applied to metal to improve the distribution of metal flow and solute, effectively eliminates ingot casting surface and inside
The defect such as segregation, obtain careful, uniform crystalline structure, with improve product quality, improve lumber recovery, reduce production economy into
This.
Brief description of the drawings
Fig. 1 is 3 direction surface markers figures of strip；
Fig. 2 is copper-nickel alloy sampling exterior appearance figure；
Fig. 3 is as cast condition macroscopic organization chart；
Fig. 4 is as cast condition Metallographic Analysis section X organization charts；
Fig. 5 is as cast condition Metallographic Analysis section Y organization charts；
Fig. 6 is 3SEM and EDS testing result figures；
Fig. 7 is 1# plus magnetic sample；
Fig. 8 is 2# without magnetic sample
Specific embodiment
Below in conjunction with the accompanying drawings and specific embodiment, the present invention is furture elucidated.
The present invention of the invention puies forward kind of an one kind and is applied to the complicated copper-nickel alloy ternary alloy three-partalloy production electromagnetic casting process of high accuracy, bag
Include following steps, step 1) copper raw material, dispensing are cleaned, surface impurity is removed, wherein, carried out clearly using box cleaning case
Wash, cleaning water temperature is 20 degrees Celsius -30 degrees Celsius and air-dries standby.Step 2) copper raw material in step 1 after cleaning, dispensing are led to
Crossing smelting furnace carries out melting.Step 3) solution after melting in step 2 is poured into first the dress that magnet coil produces electromagnetic force is installed
In putting, when liquid metal solidification, into the solid-state stage, when co-melting in solid-liquid, is produced by magnet coil in melting solution containment
Electromagnetic force, electromagnetic field is applied to metal to improve the distribution of metal flow and solute, effectively eliminates ingot casting surface with inside
The defects such as segregation, obtain careful, uniform crystalline structure.
It is further preferred that installing the device that magnet coil produces electromagnetic force in step 3, its electrical current scope is 10A-
30A, the electromagnetic force of generation is 3Hz-8Hz.
Embodiment
It is described for (23A, 5Hz) Sn-P-Cu alloy electromagnetism horizontally continuous casting steel billet sample detection analyzes (copper-nickel alloy sample below
Detection and analysis report),
1. test objective and testing program
1) test objective
Research copper-nickel alloy is organized and composition transfer and surface quality situation, and explore rational technique under magnetic fields
Parameter.
2) testing program
Test the technological parameter such as following table formulated：
| Parameter | 1# | 2# |
| Casting speed mm/s | 17.80 | 17.80 |
| Electric current A | 23 | 0 |
| Frequency Hz | 5 | 0 |
| Stirring interval s | 7 | 0 |
2. process of the test situation explanation
According to testing program, one group plus magnetic experiment, 1# samples are only carried out, it has been contrasted with 2# samples, you can to study
, in magnetic field undertissue, composition transfer and surface quality situation, detection plate zone face mark is as follows, sees Fig. 1 for copper-nickel alloy.
3. result of the test
3.1 exterior appearances, are shown in Fig. 2.
3.2 as cast condition macrostructures, see Fig. 3, and as cast condition macrostructure can be seen that：
1) in section structure, the sample column Jingjing particle size for applying magnetic field is smaller；
2) surface texture, applies magnetic field sample crystallite dimension larger；
3) after surface milling 4mm, size almost, but adds magnetic sample grain size evenly.
3.3 as cast condition Metallographic Analysis, are shown in Fig. 4 and Fig. 5.
3.3SEM and EDS testing results, are shown in Fig. 6, as can be seen from Figure 6：1) plus magnetic field sample arborescent structure size compared with
Greatly, magnetic field sample arborescent structure size is applied smaller；2) applying magnetic field sample constituents distribution can be seen that by reflection pattern result
It is more uniform, do not apply magnetic field sample elemental composition fluctuating bigger.
3.4 as cast condition composition detections are analyzed
1) 1# adds magnetic sample, see the table below and Fig. 7.
| Sequence number | Away from surface location (mm) | Cu (wt%) | Ni (wt%) | Zn (wt%) |
| 1 | 0 | 56.11 | 8.82 | 35.07 |
| 2 | 0.2 | 54.29 | 15.87 | 29.84 |
| 3 | 0.44 | 54.34 | 16.06 | 29.60 |
| 4 | 0.6 | 54.22 | 15.94 | 29.84 |
| 5 | 1.9 | 54.30 | 15.96 | 29.74 |
| 6 | 3.7 | 54.22 | 16.13 | 29.65 |
2) 2# see the table below and Fig. 8 without magnetic sample.
| Sequence number | Away from surface location (mm) | Cu (wt%) | Ni (wt%) | Zn (wt%) |
| 1 | 0 | 53.64 | 10.00 | 36.36 |
| 2 | 0.14 | 54.35 | 15.93 | 29.72 |
| 3 | 0.44 | 54.23 | 16.04 | 29.73 |
| 4 | 0.64 | 54.18 | 16.19 | 29.63 |
| 5 | 1.8 | 54.15 | 16.14 | 29.71 |
| 6 | 2.39 | 54.13 | 16.28 | 29.59 |
Be can be seen that from composition detection result：Magnetic field dialogue copper component impact effect is not obvious, after the 0.3mm of milling surface,
Composition tends to uniform.
In sum, in the complicated copper-nickel alloy ternary alloy three-partalloy of production high accuracy, metal is applied when the electromagnetic force of 23A, 5Hz is used
Power-up magnetic field, can improve the distribution of metal flow and solute, effectively eliminate the defects such as the segregation of ingot casting surface and inside, obtain
Careful, uniform crystalline structure, with improve product quality, improves lumber recovery, while during original cogging as described above because of broken side only
4.0mm can be rolled, is rerolled after just needing recrystallization annealing, can now be rolled down to 2.2mm, shorten the production time, improve production effect
Rate, calculates by the complicated copper-nickel alloys of volume 200 are produced per year, and 700 DEG C of annealing can reduce by 1/4 heat, about reduce by 50 annealing, and each stove power consumption is about
5000 degree, power consumption can reduce by 250,000 degree, be calculated by 1 yuan/degree, save 250,000 yuan or so of power consumption；Finished product rate is improved by 60%
To 80%, calculated with producing 600 tons of complicated copper-nickel alloys per year, 250 tons of inventory can be reduced, calculated with 50,000 yuan/ton of cost of material (with
Market price fluctuations are different with each element adding proportion during production), reduce about 12,500,000 yuan of fund input.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, under the premise without departing from the principles of the invention, some improvement can also be made, these improvement also should be regarded as of the invention
Protection domain.
Claims (2)
1. one kind is applied to the complicated copper-nickel alloy ternary alloy three-partalloy production electromagnetic casting process of high accuracy, it is characterised in that：Including following step
Suddenly,
Step 1) copper raw material, dispensing are cleaned, surface impurity is removed, wherein, cleaned using box cleaning case, clean
Water temperature is 20 degrees Celsius -30 degrees Celsius and air-dries standby；
Step 2) copper raw material in step 1 after cleaning, dispensing are carried out into melting by smelting furnace；
Step 3) solution after melting in step 2 is poured into first in the device for installing magnet coil generation electromagnetic force, work as melting
Liquid metal solidification when co-melting in solid-liquid, produces electromagnetic force, to gold into the solid-state stage by magnet coil in solution containment
Category applies electromagnetic field to improve the distribution of metal flow and solute, effectively eliminates the defects such as the segregation of ingot casting surface and inside,
Obtain careful, uniform crystalline structure.
2. one kind according to claim 1 is applied to the complicated copper-nickel alloy ternary alloy three-partalloy production electromagnetic casting process of high accuracy, its
It is characterised by：The device that magnet coil produces electromagnetic force is installed, its electrical current scope is 10A-30A, is produced in the step 3
Electromagnetic force be 3Hz-8Hz.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710075907.8A CN106702296A (en) | 2017-02-13 | 2017-02-13 | Electromagnetic casting process applied to high-precision complex cupronickel ternary alloy production |
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| CN201710075907.8A CN106702296A (en) | 2017-02-13 | 2017-02-13 | Electromagnetic casting process applied to high-precision complex cupronickel ternary alloy production |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110343870A (en) * | 2019-07-26 | 2019-10-18 | 浙江天宁合金材料有限公司 | A kind of oxygen-free copper founding production method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102990027A (en) * | 2012-12-31 | 2013-03-27 | 上海大学 | Low-energy-consumption electromagnetic stirring method for continuous casting and metal continuous casting device |
| CN103331435A (en) * | 2013-07-03 | 2013-10-02 | 上海大学 | Method for controlling metal solidification phase texture in combined mode through external rotating magnetic field and current and fusion casting device of method |
| CN103849794A (en) * | 2014-03-07 | 2014-06-11 | 镇江金鑫有色合金有限公司 | Environmental self-lubricating wear-resistant copper alloy and preparation method thereof |
-
2017
- 2017-02-13 CN CN201710075907.8A patent/CN106702296A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102990027A (en) * | 2012-12-31 | 2013-03-27 | 上海大学 | Low-energy-consumption electromagnetic stirring method for continuous casting and metal continuous casting device |
| CN103331435A (en) * | 2013-07-03 | 2013-10-02 | 上海大学 | Method for controlling metal solidification phase texture in combined mode through external rotating magnetic field and current and fusion casting device of method |
| CN103849794A (en) * | 2014-03-07 | 2014-06-11 | 镇江金鑫有色合金有限公司 | Environmental self-lubricating wear-resistant copper alloy and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110343870A (en) * | 2019-07-26 | 2019-10-18 | 浙江天宁合金材料有限公司 | A kind of oxygen-free copper founding production method |
| CN110343870B (en) * | 2019-07-26 | 2021-10-29 | 浙江天宁合金材料有限公司 | Oxygen-free copper casting production method |
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