CN111560530A - Melting process of cupronickel alloy melt - Google Patents
Melting process of cupronickel alloy melt Download PDFInfo
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- CN111560530A CN111560530A CN202010535167.3A CN202010535167A CN111560530A CN 111560530 A CN111560530 A CN 111560530A CN 202010535167 A CN202010535167 A CN 202010535167A CN 111560530 A CN111560530 A CN 111560530A
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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
- C22C1/03—Making non-ferrous alloys by melting using master alloys
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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
- C22C1/06—Making non-ferrous alloys with the use of special agents for refining or deoxidising
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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
- C22C9/06—Alloys based on copper with nickel or cobalt as the next major constituent
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Abstract
The invention provides a melting process of cupronickel alloy melt, which comprises the following steps of 1) cupronickel alloy composition according to mass percent: 9.0-11.0% of Ni + Co, 1.0-1.5% of Fe, 0.5-1.0% of Mn and the balance of copper, wherein the total amount is 100%, and raw materials are prepared according to the composition of the cupronickel alloy; 2) adding the raw materials into a power frequency induction furnace, covering charcoal on the surface of the raw materials, and smelting to obtain alloy liquid; 3) introducing oxygen into the power frequency induction furnace for 2-10 min, and reducing and gasifying P2O5And degassing; 4) adding a deoxidizer into the copper liquid, standing and refining to obtain the cupronickel alloy melt. According to the melting process of the cupronickel alloy melt, the red copper TP2 process return materials are added into cupronickel for melting, the components of the cupronickel alloy reach the national standard, and the production cost is saved.
Description
Technical Field
The invention relates to the technical field of nonferrous metal processing, in particular to a melting process of cupronickel alloy melt.
Background
The copper content in the red copper TP2 process return material is more than 99.9 percent, the copper can be used as 100 percent cathode copper when products with the same brands are produced and smelted, but phosphorus element in TP2 can exceed standard when white copper products are produced, so that only a small amount of copper can be added, 30kgTP2 is added for one ton of copper, the phosphorus element content in the components of BFe10-1-1 and BFe30-1-1 in GB5231 of the national standard white copper products is less than 0.006 percent, the phosphorus element content in the red copper TP2 is generally 0.018-0.025 percent, the phosphorus element in the produced white copper exceeds standard, and the white copper component prepared when the red copper TP2 process return material is used as the white copper smelting raw material can not reach the national standard.
Disclosure of Invention
The invention aims to overcome and supplement the defects in the prior art, and provides a cupronickel alloy melt smelting process, which can improve the casting operation environment of a B30 alloy cast ingot, improve the quality of the B30 alloy cast ingot and reduce the occurrence of safety accidents.
The technical scheme adopted by the invention is as follows:
a melting process of cupronickel alloy melt, which comprises the following steps: the method comprises the following steps:
1) the cupronickel alloy comprises the following components in percentage by mass: 9.0-11.0% of Ni + Co, 1.0-1.5% of Fe, 0.5-1.0% of Mn and the balance of copper, wherein the total amount is 100%, and raw materials are prepared according to the composition of a cupronickel alloy;
2) adding the raw materials into a power frequency induction furnace, covering charcoal on the surface of the raw materials, and smelting to obtain alloy liquid;
3) introducing oxygen into the power frequency induction furnace for 2-10 min, and reducing and gasifying P to P2O5And degassing;
4) and adding a deoxidizing agent into the copper liquid, standing for 5-10 min, and refining to obtain the cupronickel alloy liquid.
Preferably, the cupronickel alloy melt smelting process includes: the smelting temperature in the step 2) is 1100-1250 ℃, and the time is 1-2 h.
Preferably, the cupronickel alloy melt smelting process includes: and in the step 3), the pressure is controlled to be 0.02-0.12 MPa when oxygen is introduced, and the oxygen flow is 8-12 l/h.
Preferably, the cupronickel alloy melt smelting process includes: the deoxidizer in the step 4) comprises copper-magnesium alloy and aluminum; the addition amount of the copper-magnesium alloy is 0.002-0.005 percent of the total amount of the raw materials.
Preferably, the cupronickel alloy melt smelting process includes: the adding amount of the aluminum in the step 4) is 0.002-0.005 percent of the total amount of the raw materials.
Preferably, the cupronickel alloy melt smelting process includes: the refining temperature in the step 4) is 1170-1270 ℃, and the refining time is 5-15 min.
The invention has the advantages that:
according to the melting process of the white copper alloy melt, the red copper TP2 process return materials are used as the raw materials of the white copper alloy, partial phosphorus elements in the red copper are removed by introducing oxygen in the smelting process, and the copper magnesium alloy and aluminum are added to be used as a deoxidizer in a synergistic manner, so that oxygen in the white copper alloy melt is removed, the corrosion resistance, the mechanical property and the process performance of the subsequent white copper alloy are improved, the red copper TP2 process return materials are added to the white copper for melting, the components of the white copper alloy reach the national standard, and the production cost is saved.
Detailed Description
The present invention will be further described with reference to the following specific examples.
The invention relates to a cupronickel alloy melt for preparing BFe10-1-1 of a cupronickel product GB5231, which comprises the following components:
example 1:
a melting process of cupronickel alloy melt, which comprises the following steps: the method comprises the following steps:
1) the cupronickel alloy comprises the following components in percentage by mass: 9.5% of Ni + Co, 1.3% of Fe, 0.8% of Mn and 100% of red copper TP 288.4%, and preparing raw materials according to the composition of the cupronickel alloy;
2) adding the raw materials into a power frequency induction furnace, covering charcoal on the surface of the raw materials, wherein the covering thickness of the charcoal is 150mm, and smelting to obtain alloy liquid; the smelting temperature is 1100 ℃, the smelting time is 1h, the production equipment is a power frequency cored induction furnace, a model GYT-250KW power frequency cored copper melting furnace, and the production brand is BFe10-1-1 cupronickel cast ingot;
3) introducing oxygen into the industrial frequency induction furnace for 5min at the pressure of 0.08MPa and the flow of 11l/h, and reducing and gasifying P to P2O5And degassing;
4) adding a deoxidizer into the copper liquid, standing for 8min, and refining to obtain a white copper alloy liquid, wherein the deoxidizer comprises a copper-magnesium alloy and aluminum; the adding amount of the copper-magnesium alloy is 0.002 percent of the total amount of the raw materials, and the adding amount of the aluminum is 0.002 percent of the total amount of the raw materials; the refining temperature is 1170 deg.C, and the refining time is 5 min.
Finally, the phosphorus content of the obtained cupronickel alloy solution is 0.003 percent, the oxygen content is 16PPM, the production requirement of the subsequent ingot casting products is completely met, and the magnesium content in the copper-magnesium alloy is 30 percent.
Example 2
A melting process of cupronickel alloy melt, which comprises the following steps: the method comprises the following steps:
1) the cupronickel alloy comprises the following components in percentage by mass: 10% of Ni + Co, 1.2% of Fe, 0.7% of Mn and 288.1% of red copper TP, wherein the sum of the above components is 100%, and raw materials are prepared according to the composition of the cupronickel alloy;
2) adding the raw materials into a power frequency induction furnace, covering charcoal on the surface of the raw materials, wherein the covering thickness of the charcoal is 150mm, and smelting to obtain alloy liquid; the smelting temperature is 1100 ℃, the smelting time is 1.52h, the production equipment is a power frequency cored induction furnace, a model number GYT-250KW power frequency cored copper melting furnace, and the production brand number is BFe10-1-1 cupronickel cast ingot;
3) introducing oxygen into the industrial frequency induction furnace for 6min at the pressure of 0.08MPa and the flow of 12l/h, and reducing and gasifying P to P2O5And degassing;
4) adding a deoxidizer into the copper liquid, standing for 9min, and refining to obtain a white copper alloy liquid, wherein the deoxidizer comprises a copper-magnesium alloy and aluminum; the adding amount of the copper-magnesium alloy is 0.005 percent of the total amount of the raw materials, and the adding amount of the aluminum is 0.005 percent of the total amount of the raw materials; the refining temperature is 1200 deg.C, and the refining time is 10 min.
Finally, the phosphorus content of the obtained cupronickel alloy solution is 0.0029 percent, the oxygen content is 15PPM, the production requirement of the subsequent ingot casting products is completely met, and the magnesium content in the copper-magnesium alloy is 30 percent.
Example 3:
a melting process of cupronickel alloy melt, which comprises the following steps: the method comprises the following steps:
1) the cupronickel alloy comprises the following components in percentage by mass: 11% of Ni + Co, 1.5% of Fe, 1.0% of Mn and 286.5% of red copper TP, wherein the total amount is 100%, and raw materials are prepared according to the composition of the cupronickel alloy;
2) adding the raw materials into a power frequency induction furnace, covering charcoal on the surface of the raw materials, wherein the covering thickness of the charcoal is 150mm, and smelting to obtain alloy liquid; the smelting temperature is 1250 ℃, the smelting time is 2 hours, the production equipment is a power frequency cored induction furnace, a model GYT-250KW power frequency cored copper melting furnace, and the production brand is BFe10-1-1 cupronickel cast ingot;
3) introducing oxygen into the industrial frequency induction furnace for 10min at the pressure of 0.12MPa and the flow of 12l/h, and reducing and gasifying P to P2O5And degassing;
4) adding a deoxidizer into the copper liquid, standing for 10min, and refining to obtain a white copper alloy liquid, wherein the deoxidizer comprises a copper-magnesium alloy and aluminum; the adding amount of the copper-magnesium alloy is 0.004 percent of the total amount of the raw materials, and the adding amount of the aluminum is 0.005 percent of the total amount of the raw materials; the refining temperature is 1270 deg.C, and the refining time is 15 min.
Finally, the phosphorus content of the obtained cupronickel alloy solution is 0.0023 percent, the oxygen content is 12PPM, the production requirement of the subsequent ingot casting products is completely met, and the magnesium content in the copper-magnesium alloy is 30 percent.
Comparative example 1:
a melting process of cupronickel alloy melt, which comprises the following steps: the method comprises the following steps:
1) the cupronickel alloy comprises the following components in percentage by mass: 9.5% of Ni + Co, 1.3% of Fe, 0.8% of Mn and 100% of red copper TP 288.4%, and preparing raw materials according to the composition of the cupronickel alloy;
2) adding the raw materials into a power frequency induction furnace, covering charcoal on the surface of the raw materials, wherein the covering thickness of the charcoal is 150mm, and smelting to obtain alloy liquid; the smelting temperature is 1100 ℃, the smelting time is 1h, the production equipment is a power frequency cored induction furnace, a model GYT-250KW power frequency cored copper melting furnace, and the production brand is BFe10-1-1 cupronickel cast ingot;
3) introducing oxygen into the industrial frequency induction furnace for 5min at the pressure of 0.08MPa and the flow of 11l/h, and reducing and gasifying P to P2O5And degassing;
4) adding a deoxidizing agent into the copper liquid, standing for 8min, and refining to obtain a white copper alloy liquid, wherein the deoxidizing agent is a copper-magnesium alloy; the adding amount of the copper-magnesium alloy is 0.002 percent of the total amount of the raw materials; the refining temperature is 1170 deg.C, and the refining time is 5 min.
And finally, the phosphorus content of the obtained cupronickel alloy solution is 0.004%, the oxygen content is 75PPM, and the subsequent cupronickel alloy corrosion resistance, mechanical property and technological property are reduced due to the overhigh oxygen content in the cupronickel alloy solution, so that the production requirement of the subsequent ingot casting product cannot be met.
Comparative example 2:
a melting process of cupronickel alloy melt, which comprises the following steps: the method comprises the following steps:
1) the cupronickel alloy comprises the following components in percentage by mass: 10% of Ni + Co, 1.2% of Fe, 0.7% of Mn and 288.1% of red copper TP, wherein the sum of the above components is 100%, and raw materials are prepared according to the composition of the cupronickel alloy;
2) adding the raw materials into a power frequency induction furnace, covering charcoal on the surface of the raw materials, wherein the covering thickness of the charcoal is 150mm, and smelting to obtain alloy liquid; the smelting temperature is 1100 ℃, the smelting time is 1.52h, the production equipment is a power frequency cored induction furnace, a model number GYT-250KW power frequency cored copper melting furnace, and the production brand number is BFe10-1-1 cupronickel cast ingot;
3) introducing oxygen into the industrial frequency induction furnace for 6min at the pressure of 0.08MPa and the flow of 12l/h, and reducing and gasifying P to P2O5And degassing;
4) adding a deoxidizing agent into the copper liquid, standing for 9min, and refining to obtain a white copper alloy liquid, wherein the deoxidizing agent is aluminum; the adding amount of the aluminum is 0.005 percent of the total amount of the raw materials; the refining temperature is 1200 deg.C, and the refining time is 10 min.
And the phosphorus content of the obtained cupronickel alloy solution is 0.0052 percent, the oxygen content is 81PPM, and the subsequent corrosion resistance, mechanical property and process property of the cupronickel alloy are reduced due to the overhigh oxygen content in the cupronickel alloy solution, so that the production requirement of the subsequent ingot casting product cannot be met.
Comparative example 3:
a melting process of cupronickel alloy melt, which comprises the following steps: the method comprises the following steps:
1) the cupronickel alloy comprises the following components in percentage by mass: 11% of Ni + Co, 1.5% of Fe, 1.0% of Mn and 286.5% of red copper TP, wherein the total amount is 100%, and raw materials are prepared according to the composition of the cupronickel alloy;
2) adding the raw materials into a power frequency induction furnace, covering charcoal on the surface of the raw materials, wherein the covering thickness of the charcoal is 150mm, and smelting to obtain alloy liquid; the smelting temperature is 1250 ℃, the smelting time is 2 hours, the production equipment is a power frequency cored induction furnace, a model GYT-250KW power frequency cored copper melting furnace, and the production brand is BFe10-1-1 cupronickel cast ingot;
3) refining the alloy liquid to obtain cupronickel alloy melt, wherein the refining temperature is 1270 ℃, and the refining time is 15 min.
The phosphorus content of the obtained cupronickel alloy melt is 0.022%, and the phosphorus content is too high, so that the requirement of the subsequent ingot casting product production cannot be met.
Finally, it should be noted that the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention is described in detail with reference to the examples, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.
Claims (6)
1. A melting process of cupronickel alloy melt is characterized in that: the method comprises the following steps:
1) the cupronickel alloy comprises the following components in percentage by mass: 9.0-11.0% of Ni + Co, 1.0-1.5% of Fe, 0.5-1.0% of Mn and the balance of copper, wherein the total amount is 100%, and raw materials are prepared according to the composition of a cupronickel alloy;
2) adding the raw materials into a power frequency induction furnace, covering charcoal on the surface of the raw materials, and smelting to obtain alloy liquid;
3) introducing oxygen into the power frequency induction furnace for 2-10 min, and reducing and gasifying P to P2O5And degassing;
4) and adding a deoxidizing agent into the copper liquid, standing for 5-10 min, and refining to obtain the cupronickel alloy liquid.
2. The cupronickel melt smelting process of claim 1, characterized in that: the smelting temperature in the step 2) is 1100-1250 ℃, and the time is 1-2 h.
3. The cupronickel melt smelting process of claim 1, characterized in that: and in the step 3), the pressure is controlled to be 0.02-0.12 MPa when oxygen is introduced, and the oxygen flow is 8-12 l/h.
4. The cupronickel melt smelting process of claim 1, characterized in that: the deoxidizer in the step 4) comprises copper-magnesium alloy and aluminum; the addition amount of the copper-magnesium alloy is 0.002-0.005 percent of the total amount of the raw materials.
5. The cupronickel melt smelting process of claim 4, characterized in that: the adding amount of the aluminum in the step 4) is 0.002-0.005 percent of the total amount of the raw materials.
6. The cupronickel melt smelting process of claim 1, characterized in that: the refining temperature in the step 4) is 1170-1270 ℃, and the refining time is 5-15 min.
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| CN202010535167.3A CN111560530A (en) | 2020-06-12 | 2020-06-12 | Melting process of cupronickel alloy melt |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104894412A (en) * | 2015-04-16 | 2015-09-09 | 新疆大学 | Method for removing impurity during copper and copper alloy melting process |
| JP2017013080A (en) * | 2015-06-29 | 2017-01-19 | 千住金属工業株式会社 | Solder material, solder joint and inspection method for solder material |
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2020
- 2020-06-12 CN CN202010535167.3A patent/CN111560530A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104894412A (en) * | 2015-04-16 | 2015-09-09 | 新疆大学 | Method for removing impurity during copper and copper alloy melting process |
| JP2017013080A (en) * | 2015-06-29 | 2017-01-19 | 千住金属工業株式会社 | Solder material, solder joint and inspection method for solder material |
Non-Patent Citations (2)
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| 王文礼等: "《有色金属及合金的熔炼与铸锭》", 31 August 2009 * |
| 钟卫佳: "《铜加工技术实用手册》", 31 January 2007 * |
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Address after: 214105 No.18 Xiangyun Road, anzhen street, Xishan District, Wuxi City, Jiangsu Province Applicant after: Jiangsu Longda Super Alloy Co.,Ltd. Address before: 214105 No.18 Xiangyun Road, anzhen street, Xishan District, Wuxi City, Jiangsu Province Applicant before: WUXI LONGDA METAL MATERIALS Co.,Ltd. |
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Application publication date: 20200821 |