CN102206766A - Method for controlling magnesium content in copper-magnesium alloy casting process - Google Patents
Method for controlling magnesium content in copper-magnesium alloy casting process Download PDFInfo
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Abstract
The invention discloses a method for controlling magnesium content in a copper-magnesium alloy casting process, which comprises the following steps: after heating a graphite crucible type heating furnace to 1200-1300 DEG C, weighing a certain weight of pure copper, adding the pure copper into the graphite crucible type heating furnace to melt the pure copper into copper liquid; covering the surface of the copper liquid with a high-purity graphite reduction material; controlling the temperature of the copper liquid at 1200+/-10 DEG C; weighing and adding a magnesium material which accounts for 0.4-0.7% of the total weight of the pure copper and magnesium material; filling the magnesium material into an addition tool, inserting the addition tool to 300-500mm below the copper liquid level, stirring for about 1-2 minutes, taking out the addition tool, and covering the high-purity graphite reduction material on the copper-magnesium alloy liquid level; and after finishing adding the magnesium material, producing copper-magnesium alloy rods on upward casting equipment. The method disclosed by the invention overcomes the defects of low melting point, high volatility and high oxidability of the magnesium element, lowers the oxygen content in the alloy material, reduces the oxidation loss, uniformize the magnesium content and obviously reduces the burning loss.
Description
Technical field
The present invention relates to the copper-magnesium alloy casting field, relate in particular to the control method of Mg content in a kind of copper-magnesium alloy casting.
Background technology
Electric railway is the important component part of high-speed electric railway traction system with copper magnesium alloy contact wire, twisted wire product, copper magnesium alloy contact wire is a kind of bare wire cable that transmits electricity, give consumer by pantograph with current delivery, and copper-magnesium alloy strand mainly is to be used to hang the electric railway osculatory, and its effect is transmission current and bears very big tension force.In copper-magnesium alloy Products Development triturating, for guaranteeing stable electric property, the mechanical and physical performance of product, the magnesium element content homogeneity of used line base is crucial.But magnesium elements has characteristics such as low melting point, volatile, easy oxidation, and magnesium element content is difficult to stable control in the melting and casting process, and loss is also bigger.So the control magnesium element content directly has influence on the machinery of magnesium-alloy material, the stability of electric property.
Summary of the invention
The object of the present invention is to provide the control method of Mg content in a kind of copper-magnesium alloy casting that can reduce the magnesium elements loss.
For achieving the above object, the present invention realizes by following technical proposals: the control method of Mg content in a kind of copper-magnesium alloy casting is characterized in that: may further comprise the steps:
Step 1: after plumbago crucible formula process furnace was heated to 1200 ℃-1300 ℃, the fine copper that takes by weighing certainweight was added in the plumbago crucible formula process furnace and is fused into copper liquid;
Step 2: cover the high purity graphite reducing material at the copper fluid surface, the thickness of this high purity graphite reducing material remains on 100mm-150mm;
Step 3: adopt platinum rhodium thermocouple to gather copper liquid real time temperature data, the copper fluid temperature is controlled at 1200 ℃ ± 10 ℃;
Step 4: take by weighing the magnesium material of adding, the weight of this magnesium material accounts for the 0.4%-0.7% of fine copper and magnesium material gross weight;
Step 5: in the adding instrument, put into the magnesium material that needs adding, be inserted into the following 300-500mm of copper liquid levels place, after stir about 1-2 minute, take out the adding instrument, cover the copper-magnesium alloy liquid level with high purity graphite reductibility material; Can add as required for several times, add required magnesium material fully after, this end of operation;
Step 6: after the magnesium material interpolation finishes, production of copper magnesium alloy bar on up casting equipment.
Preferably, after described step 6 made coming out of the stove of copper-magnesium alloy bar, the alloy liquid level descended, and then carried out according to the following steps circulation:
1) take by weighing the pure copper material of certainweight, take by weighing the magnesium material of adding again, wherein the weight of magnesium material accounts for the 0.4%-0.7% of copper magnesium gross weight;
2) according to abovementioned steps 4 magnesium material that takes by weighing is added in the alloy liquid;
3) add magnesium material after 2-5 minute, the pure copper material that takes by weighing is added in the plumbago crucible formula process furnace;
4) production of copper magnesium alloy bar on up casting equipment.
Preferably, got the content of copper-magnesium alloy liquid sample test magnesium elements every one hour.
The present invention has following beneficial effect: the present invention adopts Cu-CATH-1 and magnesium material through heat fused; by the going into stove time, ratio, instrument, go into stove method etc. of control reducing atmosphere, alloy solution temperature, alloy solution protection, magnesium elements, produce Mg content stabilized uniform as cast condition copper-magnesium alloy bar by the up casting method.The magnesium elements span of control require 0.4-0.7%, its fluctuation range can be controlled in ± 0.02%.
Wherein said control reducing atmosphere is presented as the plumbago crucible formula process furnace copper smelting magnesium alloy that selective reduction is strong, and alloy solution is in the reducing atmosphere, reduces oxygen level to greatest extent, thereby reduces the magnesia loss.
The present castingprocesses interalloy of described control alloy solution temperature volume solution temperature is controlled at 1200 ℃ ± 10 ℃.Adopt platinum rhodium thermocouple to gather the real time temperature data, and carry out power adjustment, reach temperature-stable, the characteristics that fluctuation range is little according to the temperature real-time and effective.
Described alloy solution protection guarantees certain thickness by high purity graphite material covering copper liquid surface, requires to change within a certain period of time according to the copper-magnesium alloy composition.
The adding instrument packing magnesium material that adopts the high purity graphite material to make inserts certain depth in the alloy solution, after stir about 1-2 minute, takes out the adding instrument, covers liquid level, the complete operation process.
The control method of Mg content has overcome the shortcoming of magnesium elements low melting point, volatile, easy oxidation in the copper-magnesium alloy of the present invention casting, reduces the alloy material oxygen level, reduces oxidational losses by the control reducing atmosphere; Adopt the method for improving processing parameter and tooling, the scaling loss of magnesium is obviously descended (about 20%), and guarantee that stable content is even.In the described copper-magnesium alloy Mg content fluctuation be controlled at ± 0.02%.The control method of Mg content can be produced the uniform copper-magnesium alloy casting of stable content bar in enormous quantities in the copper-magnesium alloy casting of the present invention, and can satisfy the product requirement of electric railway with contact system.
Description of drawings
Fig. 1 is the FB(flow block) of the control method of Mg content in a kind of copper-magnesium alloy casting according to the invention;
Fig. 2 is the operation chart of the adding magnesium material of the control method of Mg content during copper-magnesium alloy shown in Figure 1 is cast;
Fig. 3 is the structural representation of adding instrument shown in Figure 2.
Embodiment
Please refer to Fig. 1 to Fig. 3, the control method of Mg content in a kind of copper-magnesium alloy casting of the present invention may further comprise the steps:
Step 1: after plumbago crucible formula process furnace 4 was heated to 1200 ℃-1300 ℃, the fine copper that takes by weighing certainweight was added in the plumbago crucible formula process furnace 4 and is fused into copper liquid 5.In the present embodiment, the fine copper weight that takes by weighing is 2 tons-2.5 tons.The fine copper weight that takes by weighing is to determine according to the specification of plumbago crucible formula process furnace, so the fine copper weight that takes by weighing when using the plumbago crucible formula process furnace of other specifications has institute's difference.
Step 2: at copper liquid 5 surface coverage high purity graphite reducing materials 6, the thickness of this high purity graphite reducing material 6 remains on 100mm-150mm.
Step 3: adopt platinum rhodium thermocouple 7 to gather copper liquid 5 real time temperature data, copper liquid 5 temperature are controlled at 1200 ℃ ± 10 ℃.
Step 4: take by weighing the magnesium material 3 of adding, the weight of this magnesium material accounts for the 0.4%-0.7% of fine copper and magnesium material gross weight.
Step 5: in adding instrument 100, put into the magnesium material 3 that needs adding, be inserted into the following 300-500mm of copper liquid 5 liquid levels place, after stir about 1-2 minute, take out adding instrument 100, cover the copper-magnesium alloy liquid level with high purity graphite reductibility material 6; Can add as required for several times, add required magnesium material fully after, this end of operation.The concrete operations synoptic diagram can be with reference to Fig. 2.
Step 6: after the magnesium material interpolation finishes, production of copper magnesium alloy bar in up casting equipment.
After described step 6 made coming out of the stove of copper-magnesium alloy bar, the alloy liquid level descended, and then carried out according to the following steps circulation:
1) take by weighing the pure copper material of certainweight, take by weighing the magnesium material of adding again, wherein the weight of magnesium material accounts for the 0.4%-0.7% of copper magnesium gross weight;
2) according to abovementioned steps 4 magnesium material that takes by weighing is added in the alloy liquid;
3) add magnesium material after 2-5 minute, the pure copper material that takes by weighing is added in the plumbago crucible formula process furnace;
4) production of copper magnesium alloy bar on up casting equipment.
In addition, got the content of copper-magnesium alloy liquid sample test magnesium elements every one hour.
The adding instrument 100 that is adopted is in the present embodiment made by the high purity graphite material, its have reductibility strong, be difficult for oxidized when adding alloy solution and install self not influencing the alloy solution advantage that becomes to grade.Described adding instrument 100 comprises the charging portion 1 of accommodating alloy material 3, and the stock 2 that is connected with charging portion 1.The top of described charging portion 1 connects stock 2, and its underpart is provided with charging bole 10.The sidewall of described charging portion 1 also is provided with the some overfolw holes 11 for the alloy material disperse.Described charging portion 1 also is provided with Copper Foil and seals 12, after charging portion 1 fills alloy material 3, seals 12 by Copper Foil and blocks charging bole 10.
Described stock 2 is arranged on the upper end of described charging portion 1.Described stock 2 comprise the first part 21 that is connected with charging portion 1, and is connected with first part 21, second section 22 that the confession user operates.Wherein first part 21 is the high purity graphite material, and being inserted in the solution can requirement joins certain degree of depth in the crucible oven 4 according to smelting technology with alloy material, makes in the stove distributed components up and down.
Although below in conjunction with the accompanying drawings embodiment of the present invention are described, the present invention is not limited to above-mentioned specific embodiments, and above-mentioned specific embodiments only is schematic, guiding, rather than restrictive.Those of ordinary skill in the art under the situation that does not break away from the scope that claim of the present invention protects, can also make a variety of forms under the enlightenment of this specification sheets, these all belong to the row of the present invention's protection.
Claims (3)
1. the control method of Mg content during a copper-magnesium alloy is cast is characterized in that: may further comprise the steps:
Step 1: after plumbago crucible formula process furnace was heated to 1200 ℃-1300 ℃, the fine copper that takes by weighing certainweight was added in the plumbago crucible formula process furnace and is fused into copper liquid;
Step 2: cover the high purity graphite reducing material at the copper fluid surface, the thickness of this high purity graphite reducing material remains on 100mm-150mm;
Step 3: adopt platinum rhodium thermocouple to gather copper liquid real time temperature data, the copper fluid temperature is controlled at 1200 ℃ ± 10 ℃;
Step 4: take by weighing the magnesium material of adding, the weight of this magnesium material accounts for the 0.4%-0.7% of fine copper and magnesium material gross weight;
Step 5: in the adding instrument, put into the magnesium material that needs adding, be inserted into the following 300-500mm of copper liquid levels place, after stir about 1-2 minute, take out the adding instrument, cover the copper-magnesium alloy liquid level with high purity graphite reductibility material; Can add as required for several times, add required magnesium material fully after, this end of operation;
Step 6: after the magnesium material interpolation finishes, production of copper magnesium alloy bar on up casting equipment.
2. the control method of Mg content in the copper-magnesium alloy casting as claimed in claim 1, it is characterized in that: after described step 6 made coming out of the stove of copper-magnesium alloy bar, the alloy liquid level descended, and then carried out according to the following steps circulation:
1) take by weighing the pure copper material of certainweight, take by weighing the magnesium material of adding again, wherein the weight of magnesium material accounts for the 0.4%-0.7% of copper magnesium gross weight;
2) according to abovementioned steps 4 magnesium material that takes by weighing is added in the alloy liquid;
3) add magnesium material after 2-5 minute, the pure copper material that takes by weighing is added in the plumbago crucible formula process furnace;
4) production of copper magnesium alloy bar on up casting equipment.
3. the control method of Mg content is characterized in that: the content of getting copper-magnesium alloy liquid sample test magnesium elements every one hour in a kind of copper-magnesium alloy casting as claimed in claim 1 or 2.
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102608260A (en) * | 2012-03-27 | 2012-07-25 | 江苏藤仓亨通光电有限公司 | Method for detecting segregation of magnesium element in copper-magnesium alloy material |
| CN103978172A (en) * | 2014-05-29 | 2014-08-13 | 南通天星铸锻有限公司 | Copper alloy casting technology |
| CN105568016A (en) * | 2015-12-21 | 2016-05-11 | 赣州江钨拉法格高铁铜材有限公司 | Method for adding alloy elements in up-drawing copper-magnesium alloy casting |
| TWI547572B (en) * | 2011-11-07 | 2016-09-01 | 三菱綜合材料股份有限公司 | Copper alloy for electronic device, method of manufacturing copper alloy for electronic device, wrought material made of copper alloy for electronic device, and component for electronic device |
| TWI547570B (en) * | 2011-10-28 | 2016-09-01 | 三菱綜合材料股份有限公司 | Copper alloy for electronic device, method for manufacturing copper alloy for electronic device, rolled copper alloy for electronic device, and parts for electronic device |
| TWI547571B (en) * | 2011-11-14 | 2016-09-01 | 三菱綜合材料股份有限公司 | Copper alloy and wrought copper alloy products |
| US10032536B2 (en) | 2010-05-14 | 2018-07-24 | Mitsubishi Materials Corporation | Copper alloy for electronic device, method for producing copper alloy for electronic device, and copper alloy rolled material for electronic device |
| CN109371280A (en) * | 2018-10-15 | 2019-02-22 | 西安西电光电缆有限责任公司 | A kind of high-strength high-conductivity copper-magnesium alloy strand casting bar and its casting technique |
| CN110373569A (en) * | 2019-07-25 | 2019-10-25 | 信承瑞技术有限公司 | A kind of harness copper magnesium alloy base material and its production technology |
| CN110863122A (en) * | 2019-12-09 | 2020-03-06 | 山西春雷铜材有限责任公司 | Control method for precious metal adding mode |
| CN111014623A (en) * | 2019-12-09 | 2020-04-17 | 宁波兴业盛泰集团有限公司 | Semi-continuous casting method for large-size copper-magnesium alloy slab ingot |
| CN116411195A (en) * | 2023-04-19 | 2023-07-11 | 云南大学 | Control method for magnesium content in copper-magnesium alloy preparation |
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| CN102994789B (en) * | 2012-12-05 | 2014-09-10 | 云南铜业股份有限公司 | Copper-magnesium intermediate alloy adding device and method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1401803A (en) * | 2002-08-28 | 2003-03-12 | 江阴市电工合金有限公司 | Copper-magnesium alloy strand production process thereof |
| CN1933037A (en) * | 2006-08-25 | 2007-03-21 | 邢台鑫晖铜业特种线材有限公司 | Method for producing copper alloy contact wire with excellent comprehensive performance |
| CN101032928A (en) * | 2007-04-05 | 2007-09-12 | 辽宁金鑫环电缆有限公司 | Magnesium and copper alloy carrier cable for electrization railway light transporting |
| CN101707084A (en) * | 2009-11-09 | 2010-05-12 | 江阴市电工合金有限公司 | Manufacturing method for copper-magnesium alloy stranded wire |
| CN101710505A (en) * | 2009-12-14 | 2010-05-19 | 中铁建电气化局集团有限公司 | Method for preparing copper magnesium alloy contact wire |
-
2011
- 2011-05-03 CN CN2011101128210A patent/CN102206766B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1401803A (en) * | 2002-08-28 | 2003-03-12 | 江阴市电工合金有限公司 | Copper-magnesium alloy strand production process thereof |
| CN1933037A (en) * | 2006-08-25 | 2007-03-21 | 邢台鑫晖铜业特种线材有限公司 | Method for producing copper alloy contact wire with excellent comprehensive performance |
| CN101032928A (en) * | 2007-04-05 | 2007-09-12 | 辽宁金鑫环电缆有限公司 | Magnesium and copper alloy carrier cable for electrization railway light transporting |
| CN101707084A (en) * | 2009-11-09 | 2010-05-12 | 江阴市电工合金有限公司 | Manufacturing method for copper-magnesium alloy stranded wire |
| CN101710505A (en) * | 2009-12-14 | 2010-05-19 | 中铁建电气化局集团有限公司 | Method for preparing copper magnesium alloy contact wire |
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| TWI547570B (en) * | 2011-10-28 | 2016-09-01 | 三菱綜合材料股份有限公司 | Copper alloy for electronic device, method for manufacturing copper alloy for electronic device, rolled copper alloy for electronic device, and parts for electronic device |
| US9587299B2 (en) | 2011-10-28 | 2017-03-07 | Mitsubishi Materials Corporation | Copper alloy for electronic equipment, method for producing copper alloy for electronic equipment, rolled copper alloy material for electronic equipment, and part for electronic equipment |
| US10153063B2 (en) | 2011-11-07 | 2018-12-11 | Mitsubishi Materials Corporation | Copper alloy for electronic devices, method of manufacturing copper alloy for electronic devices, copper alloy plastic working material for electronic devices, and component for electronic devices |
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| TWI547571B (en) * | 2011-11-14 | 2016-09-01 | 三菱綜合材料股份有限公司 | Copper alloy and wrought copper alloy products |
| US10458003B2 (en) | 2011-11-14 | 2019-10-29 | Mitsubishi Materials Corporation | Copper alloy and copper alloy forming material |
| CN102608260A (en) * | 2012-03-27 | 2012-07-25 | 江苏藤仓亨通光电有限公司 | Method for detecting segregation of magnesium element in copper-magnesium alloy material |
| CN103978172A (en) * | 2014-05-29 | 2014-08-13 | 南通天星铸锻有限公司 | Copper alloy casting technology |
| CN105568016A (en) * | 2015-12-21 | 2016-05-11 | 赣州江钨拉法格高铁铜材有限公司 | Method for adding alloy elements in up-drawing copper-magnesium alloy casting |
| CN109371280A (en) * | 2018-10-15 | 2019-02-22 | 西安西电光电缆有限责任公司 | A kind of high-strength high-conductivity copper-magnesium alloy strand casting bar and its casting technique |
| CN110373569A (en) * | 2019-07-25 | 2019-10-25 | 信承瑞技术有限公司 | A kind of harness copper magnesium alloy base material and its production technology |
| CN110863122A (en) * | 2019-12-09 | 2020-03-06 | 山西春雷铜材有限责任公司 | Control method for precious metal adding mode |
| CN111014623A (en) * | 2019-12-09 | 2020-04-17 | 宁波兴业盛泰集团有限公司 | Semi-continuous casting method for large-size copper-magnesium alloy slab ingot |
| CN110863122B (en) * | 2019-12-09 | 2021-11-09 | 山西春雷铜材有限责任公司 | Control method for precious metal adding mode |
| CN116411195A (en) * | 2023-04-19 | 2023-07-11 | 云南大学 | Control method for magnesium content in copper-magnesium alloy preparation |
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Application publication date: 20111005 Assignee: Xi'an Xidian Optical Cable Co., Ltd. Assignor: Xian Electric Manufacturing Corp. Contract record no.: 2014610000108 Denomination of invention: Method for controlling magnesium content in copper-magnesium alloy casting process Granted publication date: 20121121 License type: Exclusive License Record date: 20140723 |
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