CN113667847A - Method for producing metal alloy - Google Patents
Method for producing metal alloy Download PDFInfo
- Publication number
- CN113667847A CN113667847A CN202110511319.0A CN202110511319A CN113667847A CN 113667847 A CN113667847 A CN 113667847A CN 202110511319 A CN202110511319 A CN 202110511319A CN 113667847 A CN113667847 A CN 113667847A
- Authority
- CN
- China
- Prior art keywords
- trace element
- metal material
- addition
- metal alloy
- amount
- Prior art date
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Classifications
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D1/00—Treatment of fused masses in the ladle or the supply runners before casting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/001—Continuous casting of metals, i.e. casting in indefinite lengths of specific alloys
- B22D11/004—Copper alloys
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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
-
- 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
- C22C9/02—Alloys based on copper with tin as the next major constituent
-
- 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
-
- 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
- C22C9/06—Alloys based on copper with nickel or cobalt as the next major constituent
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
The purpose of the present invention is to provide a method for producing a metal alloy, which can further improve the uniformity of physical properties. The method for producing a metal alloy of the present invention is a method for producing a metal alloy containing a trace element, and includes: and a step of adding a trace element to the metal material while causing the metal material in a molten state to flow in one direction, wherein when a desired concentration of the trace element in the metal alloy is denoted as a concentration D, in the step of adding, an addition amount M1 of the trace element in 1 second is adjusted to be less than 2 times a theoretical addition amount M2 of the trace element per 1 second, the theoretical addition amount M2 being calculated using the concentration D and a flow rate F of the metal material flowing in the one direction per 1 second.
Description
Technical Field
The present invention relates to a method for producing a metal alloy.
Background
Conventionally, in the field of metal alloys, the physical properties of metal alloys to which a small amount of an additive element has been added have been improved by adding the element thereto. For example, patent document 1 discloses that In order to obtain a copper alloy foil for a flexible printed circuit board having a fine crystal size and excellent bendability and etching properties, 1 or more additive elements selected from the group consisting of P, Ti, Sn, Ni, Be, Zn, In, and Mg are added to copper In a total amount of 0.003 to 0.825 mass%.
Documents of the prior art
Patent document
Patent document 1: japanese laid-open patent publication No. 2017-141501
Disclosure of Invention
Technical problem to be solved by the invention
However, the metal alloy (micro-alloyed metal alloy) containing a small amount of the additive element as described above includes a step of adding the additive element to a molten metal material (hereinafter, also referred to as a molten metal material) in a molten state before the addition of the additive element while allowing the molten metal material to flow in one direction in a production step thereof. Specifically, for example, a metal alloy in the form of an ingot (continuous casting) can be obtained by melting a metal material that is a base material containing elements before addition of the elements, adding a small amount of the elements to the molten metal material melted by the melting furnace while supplying the added elements into a tundish furnace through a pipe, and guiding the molten metal material from the tundish furnace to a casting facility for casting. In addition, by producing the metal alloy containing the additive element by such a method, the additive element can be uniformly contained in the base material, and the copper alloy can be continuously and efficiently produced.
However, in recent years, higher performance is required for products containing a metal alloy as a member, and accordingly, a high degree of uniformity in physical properties is also required for the metal alloy. In order to improve the uniformity of the physical properties of the metal alloy, it is possible to add additional elements in a more uniform amount, and particularly in the field of metallurgy of iron, copper, and the like, it is important to reduce variations in the amount of addition because addition of elements of 900 ppm by mass or less causes changes in the physical properties of the product.
Accordingly, an object of one embodiment of the present invention is to provide a method for producing a metal alloy, which can further improve uniformity of physical properties.
Means for solving the problems
In one embodiment, a method for producing a metal alloy containing a trace element (elements) includes a step of adding a trace element to a metal material in a molten state while allowing the metal material to flow in one direction, and when a desired concentration of the trace element in the metal alloy is denoted as a concentration D, in the step of adding, an addition amount M1 of the trace element in 1 second is adjusted to be less than 2 times a theoretical addition amount M2 of the trace element per 1 second, the theoretical addition amount M2 being calculated using the concentration D and a flow rate F of the metal material flowing in the one direction per 1 second.
ADVANTAGEOUS EFFECTS OF INVENTION
According to the present invention, a method for producing a metal alloy with further improved uniformity of physical properties can be provided.
Detailed Description
Hereinafter, an embodiment of the present invention (hereinafter, referred to as "the present embodiment") will be described in detail, but the present invention is not limited to the embodiment.
The method for producing a metal alloy according to the present embodiment includes a step of adding a trace element to a metal material (a metal alloy before the trace element is added) in a molten state while allowing the metal material to flow in one direction. In the present embodiment, when the concentration D is defined as the required concentration of the trace element in the metal alloy, the addition amount M1 of the trace element in 1 second is adjusted to be less than 2 times the theoretical addition amount M2 of the trace element per 1 second in the step of adding the trace element, the theoretical addition amount M2 being calculated using the concentration D and the flow rate F of the metal material flowing in one direction per 1 second.
In the present embodiment, the metal alloy is not particularly limited as long as trace elements can be added thereto, and any alloy can be used, and the state of the metal alloy can be any state such as an ingot, an alloy strip, an alloy foil, and a metal alloy sheet. The trace element may be any element contained in the metal alloy at a concentration of 10 to 900 mass ppm, and more specifically, an element that does not affect the uniformity of the physical properties of the metal alloy when unevenness occurs in the metal alloy among the elements contained at such a concentration can be selected. Specific trace elements include: p, Ag, Fe, Ca, Zr, Cr, Ti, Sn, Ni, Be, Zn, In, Mg, V, Mo, W, Ba, Sr and Y.
The metal to which the trace element is added is not particularly limited, and may be a simple metal (which may contain unavoidable impurities), or a metal alloy to which an element other than the above trace element is added, and specifically, copper, calcium copper, or chromium copper may be mentioned.
In the method for producing a metal alloy according to the present embodiment, more specifically, a production apparatus can be used, the production apparatus including: a melting furnace for melting a metal material before trace elements are added as a base material; a pipe through which a metal material melted by the melting furnace (hereinafter, the melted metal material is also referred to as a molten metal material) flows in one direction; a tundish furnace to which a molten metal material is supplied through the pipe; and a casting device for introducing the molten metal material from the tundish furnace into the casting device. Further, the manufacturing apparatus may include: an addition path which communicates with the duct and extends upward in the vertical direction; and a belt conveyor having a tip located at an opening on the upper side of the addition path in the vertical direction.
Therefore, when such a manufacturing apparatus is used, the trace elements conveyed by the belt conveyor are dropped from the tip of the belt conveyor and introduced into the opening portion on the upper side in the vertical direction of the addition path while the molten metal material is caused to flow in one direction (from one end of the pipe to the other end) in the pipe, and the trace elements can be added to the molten metal material.
In the above-described manufacturing apparatus, a low-frequency induction furnace can be used as the melting furnace, and the melting is preferably performed in an oxygen-free state.
The pipe may be a cylindrical passage, and in order to prevent oxidation of the molten metal material flowing through the pipe, it is preferable that the inside of the pipe is filled with an inert gas such as nitrogen (the molten metal material flows below the inside of the pipe, and the space above the material is filled with the inert gas).
The addition path may be a cylindrical passage that communicates with the duct and extends upward in the vertical direction (may be inclined), and may have an opening portion on the upper side in the vertical direction of the addition path. In order to make the trace elements conveyed by the belt conveyor fall and easily enter the inside of the addition path, the opening portion may be made to have an expanded shape, or a funnel may be mounted at the opening portion.
The belt conveyor can be used for automatically conveying the trace elements, and the conveyed trace elements fall from the top end of the belt conveyor and are thrown into the opening of the adding path. In order to quantitatively convey and charge the trace elements by using the belt conveyor, the belt conveyor preferably has a metering function capable of measuring the weight of the trace elements before and after dropping. Such a belt conveyor having a metering function can adjust the amount of trace elements to be fed by measuring the amount of change in the mass of the trace elements carried on the belt, for example, in order to feed a predetermined amount of trace elements per unit time; specifically, when the actual amount of trace elements to be charged (the amount of mass change) exceeds a predetermined amount, the feeding of the trace elements can be adjusted by stopping the conveyance by the belt conveyor for a certain period of time.
The tundish furnace is a furnace in which the molten metal material is temporarily accumulated, and the molten metal material is stirred in the furnace and impurities and the like can be removed. The trace elements are preferably added to the molten metal material flowing through the pipe in the present embodiment, but may be added to the molten metal material in the tundish furnace.
The casting facility is capable of producing a metal alloy in the form of an ingot by introducing a predetermined amount of a molten metal material from a tundish furnace and cooling the molten metal material.
In addition, when the metal alloy produced by the production method of the present embodiment is an ingot, it can be obtained by the above-described production apparatus, and when the metal alloy produced by the production method of the present embodiment is an alloy strip, an alloy foil, or the like, the production method of the metal alloy of the present embodiment is not particularly limited, and may include a known processing step.
Here, in the present embodiment, as described above, in the step of adding a trace element to the molten metal material, the addition amount M1 of the trace element in 1 second can be adjusted to be less than 2 times the theoretical addition amount M2 of the trace element per 1 second, the theoretical addition amount M2 being calculated using the concentration D (the required concentration of the trace element in the ingot) and the flow rate F per 1 second of the molten metal material flowing in one direction.
The "amount of trace element added in 1 second" M1 means the mass of trace element actually added to the molten metal material in 1 second.
The "theoretical amount of addition of trace elements M2 per 1 second" is calculated using the required concentration D of trace elements in the metal alloy and the flow rate F per 1 second of the molten metal material flowing in one direction, in other words, the mass of trace elements to be added to the molten metal material per 1 second calculated so that the concentration of trace elements in the metal alloy becomes the required concentration D. That is, when a trace element is directly added (as a simple substance) to a molten metal material, the concentration D of the trace element in an ingot can be determined by D being M2/(F + M2), and the theoretical amount of addition M2 of the trace element per 1 second becomes M2 being D × F/(1-D). Therefore, the amount of trace element added M1 in 1 second was M1 < 2 × M2 — 2 × D × F/(1-D).
In addition, when the concentration of the trace element in the diluted particles is referred to as "D", the concentration D of the trace element in the diluted particles can be determined by the theoretical amount of addition M2 of the trace element per 1 second, which is M2 — D × F/(1-D/D), and M2/(F + M2/D). Therefore, the amount of trace element added M1 in 1 second was M1 < 2 × M2 — 2 × D × F/(1-D/D).
The flow rate F of the molten metal material can be calculated by any method.
In the present embodiment, by adjusting the amount of trace element M1 added within 1 second to be less than 2 times the theoretical amount of trace element M2 added per 1 second, the variation in the concentration of trace elements in the obtained metal alloy can be reduced, and the uniformity of physical properties can be further improved.
That is, when the amount of addition M1 in 1 second is more than 2 times the theoretical amount of addition M2 per 1 second, an excessively high concentration of trace elements may occur in the molten metal material. Meanwhile, if the amount of addition M1 in 1 second is too large, the amount of addition M1 of the trace element in the next 1 second is adjusted to 0, or the amount of addition M1 of the trace element is continuously decreased in the next several seconds, and the amount of addition M1 is decreased, then in the molten metal material, in addition to the above-described portion where the concentration of the trace element is too large, a portion where the concentration of the trace element is too low may be generated. Therefore, by adjusting the amount of addition of the trace element M1 in 1 second to be less than 2 times the theoretical amount of addition M2 per 1 second, the unevenness of such trace element in the molten metal material can be reduced, and therefore the variation in the concentration of the trace element in the metal alloy can be reduced.
Here, in the method for producing an ingot according to the present embodiment, as a method for adjusting the amount of the trace element added in 1 second to be less than 2 times the theoretical amount of the trace element added M2 per 1 second, the following method can be exemplified.
That is, as a method of adjusting the amount of addition of the trace element M1 in 1 second to less than 2 times the theoretical amount of addition of M2 per 1 second, the following methods are exemplified: in a metal alloy manufacturing apparatus, a belt width (a length in a direction orthogonal to a belt traveling direction) of a belt conveyor for feeding a molten metal material flowing through a pipe through an addition path is made relatively small. That is, when the belt width of the belt conveyor is large, the trace elements are conveyed while being carried in a state of being widely spread in the width direction, and therefore, the trace elements tend to fall from the tip of the belt conveyor to the opening of the addition path more often and the amount of the trace elements added tends to increase (the trace elements accumulated in the width direction tend to fall from the tip more often). Conversely, by reducing the belt width, the trace elements falling from the tip of the belt conveyor to the opening of the addition path can be reduced, and the amount of addition M1 of the trace elements in 1 second can be easily adjusted.
In addition to the above-mentioned methods, when the trace element is in a particle form as described below, a method of making the particle diameter of the trace element relatively small can be mentioned. By reducing the particle diameter of the trace element, the trace element gradually falls down little by little (the trace element does not fall down a large amount from the tip at a time) when the trace element falls down from the tip of the belt conveyor to the opening of the addition path, and therefore the amount of addition M1 of the trace element within 1 second can be easily adjusted.
Further, as a method other than the above method, there is a method of blowing a gas, more preferably an inert gas such as nitrogen gas, into the opening of the addition path when dropping and charging the trace elements conveyed by the belt conveyor. Specifically, when a trace element is thrown into a molten metal material flowing in a pipe through an addition path, heat of the molten metal material causes an updraft to be generated in the addition path, and therefore, non-uniformity may be generated in the drop of the trace element in the addition path. However, the trace elements can be more stably dropped by blowing the gas toward the opening of the addition path. In particular, in the present embodiment, when the material is made to flow while the inside of the duct is filled with the inert gas, the gas may flow backward in the addition path, and therefore the trace elements can be more stably dropped by blowing the gas toward the opening of the addition path. In addition, in the case of using an inert gas, oxidation of the trace elements can be prevented.
While the method of adjusting the amount of trace element M1 added in 1 second to less than 2 times the theoretical amount of addition M2 per 1 second in the present embodiment has been described above, the method of adjusting in the ingot production method of the present embodiment is not limited to the above-described method, and any method or combination of the above-described methods can be used.
In the present embodiment, the trace element is preferably added using a particulate trace element. By using the particulate trace element, the amount of the trace element M1 added in 1 second can be easily adjusted to an appropriate amount, and by using the diluent particles, the amount of the trace element M1 added in 1 second can be more easily adjusted by increasing the amount of the trace element to be added. In addition, chemical changes such as oxidation of the trace elements can be suppressed, and the handleability of the trace elements can be improved.
The particle diameter is preferably 2.0 to 4.0 mm. The particle diameter means a volume average particle diameter, that is, a value (D) of 50% of a volume particle diameter distribution50)。
When the particle diameter is less than 2.0mm, although it is advantageous in that it can be dissolved in the molten metal material quickly, it is liable to become a lump during transportation, and it is difficult to adjust the amount of M1 added within 1 second. In addition, when the particle diameter is less than 1.0mm, it may be oxidized and may be affected by the gas flow. On the other hand, when the particle diameter is larger than 4.0mm, the handling is easy, but it tends to be difficult to adjust the amount of M1 added within 1 second.
The diluent particles are not particularly limited, but the concentration d of the trace element is preferably 50 mass% or less, and more preferably 20 mass% or less. By selecting such a range, the amount of addition M1 within 1 second can be adjusted while increasing the amount of input.
Further, in the case where the metal alloy contains an additive element other than a trace element, in the present embodiment, the additive element other than a trace element may be added by using an additive route as in the case of the trace element addition method, or the additive element may be contained in the material itself melted in the melting furnace, or the additive element may be added in the tundish furnace.
Although the embodiments of the present invention have been described above, the method for producing the metal alloy of the present invention is not limited to the above-described examples, and can be modified as appropriate.
Industrial applicability of the invention
According to the present invention, a method for producing a metal alloy capable of further improving uniformity of physical properties can be provided.
Claims (2)
1. A method for producing a metal alloy containing a trace element, comprising:
a step of adding a trace element to a metal material in a molten state while allowing the metal material to flow in one direction, and,
when the desired concentration of trace elements in the metal alloy is designated as concentration D,
in the adding step, an addition amount M1 of the trace element in 1 second is adjusted to be less than 2 times a theoretical addition amount M2 of the trace element per 1 second, the theoretical addition amount M2 being calculated using the concentration D and a flow rate F of the metal material flowing in the one direction per 1 second.
2. The method for producing a metal alloy according to claim 1,
in the step of performing the addition,
the metal material in a molten state flows in one direction in a pipe filled with an inert gas, and
the trace element is added by dropping the trace element conveyed by the belt conveyor from the tip end of the belt conveyor into a vertically upper opening of an addition path communicating with the duct and extending toward the vertically upper side.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2020085390A JP7394017B2 (en) | 2020-05-14 | 2020-05-14 | Metal alloy manufacturing method |
| JP2020-085390 | 2020-05-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113667847A true CN113667847A (en) | 2021-11-19 |
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ID=78511003
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110511319.0A Pending CN113667847A (en) | 2020-05-14 | 2021-05-11 | Method for producing metal alloy |
Country Status (4)
| Country | Link |
|---|---|
| JP (2) | JP7394017B2 (en) |
| KR (2) | KR20210141355A (en) |
| CN (1) | CN113667847A (en) |
| TW (1) | TWI761155B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006341268A (en) * | 2005-06-08 | 2006-12-21 | Mitsubishi Materials Corp | Apparatus and method for continuously manufacturing copper alloy |
| CN101878078A (en) * | 2007-11-30 | 2010-11-03 | 古河电气工业株式会社 | Process for manufacturing copper alloy products and equipment therefor |
| CN101878079A (en) * | 2007-11-30 | 2010-11-03 | 古河电气工业株式会社 | Method of regulating composition of molten metal during continuous casting and apparatus therefor |
| CN104114303A (en) * | 2012-02-14 | 2014-10-22 | 吉坤日矿日石金属株式会社 | High-purity titanium ingots, manufacturing method therefor, and titanium sputtering target |
| CN105829554A (en) * | 2013-12-17 | 2016-08-03 | 三菱综合材料株式会社 | Method for producing ca-containing copper alloy |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5719346A (en) * | 1980-07-10 | 1982-02-01 | Showa Alum Corp | Method for adding metal with low melting point to molten aluminum |
| GB8610717D0 (en) * | 1986-05-01 | 1986-06-04 | Alform Alloys Ltd | Production of alloys |
| JPS6362829A (en) * | 1986-09-02 | 1988-03-19 | Mitsubishi Metal Corp | Apparatus for producing alloy melt |
| JPH038537A (en) * | 1989-06-02 | 1991-01-16 | Fujikura Ltd | Apparatus for adding alloy element |
| JP2965481B2 (en) * | 1995-05-08 | 1999-10-18 | 日鉱金属株式会社 | Method for producing highly conductive copper alloy |
| JP5607475B2 (en) | 2010-09-17 | 2014-10-15 | 古河電気工業株式会社 | Copper alloy ingot and method for producing the same |
| KR20160030777A (en) * | 2014-09-11 | 2016-03-21 | 엠케이전자 주식회사 | Silver alloy bonding wire and manufacturing method thereof |
| JP6645127B2 (en) | 2015-11-04 | 2020-02-12 | 日本製鉄株式会社 | Slab production method |
| JP6294376B2 (en) | 2016-02-05 | 2018-03-14 | Ｊｘ金属株式会社 | Copper foil for flexible printed circuit board, copper-clad laminate using the same, flexible printed circuit board, and electronic device |
| JP6490259B2 (en) * | 2017-09-04 | 2019-03-27 | Ｄｏｗａエレクトロニクス株式会社 | Method for producing Fe powder or alloy powder containing Fe |
| JP6717356B2 (en) * | 2018-03-27 | 2020-07-01 | 日立金属株式会社 | Method for producing metal particles |
-
2020
- 2020-05-14 JP JP2020085390A patent/JP7394017B2/en active Active
-
2021
- 2021-03-29 TW TW110111348A patent/TWI761155B/en active
- 2021-04-29 KR KR1020210055442A patent/KR20210141355A/en not_active Application Discontinuation
- 2021-05-11 CN CN202110511319.0A patent/CN113667847A/en active Pending
-
2023
- 2023-04-07 KR KR1020230046231A patent/KR20230051460A/en not_active Application Discontinuation
- 2023-06-09 JP JP2023095652A patent/JP2023113911A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006341268A (en) * | 2005-06-08 | 2006-12-21 | Mitsubishi Materials Corp | Apparatus and method for continuously manufacturing copper alloy |
| CN101878078A (en) * | 2007-11-30 | 2010-11-03 | 古河电气工业株式会社 | Process for manufacturing copper alloy products and equipment therefor |
| CN101878079A (en) * | 2007-11-30 | 2010-11-03 | 古河电气工业株式会社 | Method of regulating composition of molten metal during continuous casting and apparatus therefor |
| CN104114303A (en) * | 2012-02-14 | 2014-10-22 | 吉坤日矿日石金属株式会社 | High-purity titanium ingots, manufacturing method therefor, and titanium sputtering target |
| CN105829554A (en) * | 2013-12-17 | 2016-08-03 | 三菱综合材料株式会社 | Method for producing ca-containing copper alloy |
Non-Patent Citations (1)
| Title |
|---|
| 袁杰: "《银含量对铜银合金接触线坯抗拉强度和导电性能的影响》", 《云南冶金》 * |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20210141355A (en) | 2021-11-23 |
| TW202202636A (en) | 2022-01-16 |
| KR20230051460A (en) | 2023-04-18 |
| JP7394017B2 (en) | 2023-12-07 |
| JP2021179001A (en) | 2021-11-18 |
| JP2023113911A (en) | 2023-08-16 |
| TWI761155B (en) | 2022-04-11 |
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