CN101906547A - Non-vacuum smelting method of CuCrZr alloy - Google Patents
Non-vacuum smelting method of CuCrZr alloy Download PDFInfo
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- CN101906547A CN101906547A CN 201010231893 CN201010231893A CN101906547A CN 101906547 A CN101906547 A CN 101906547A CN 201010231893 CN201010231893 CN 201010231893 CN 201010231893 A CN201010231893 A CN 201010231893A CN 101906547 A CN101906547 A CN 101906547A
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Abstract
The invention relates to a non-vacuum smelting method of a CuCrZr alloy, which is characterized by comprising the following steps of: manufacturing Cr and Zr into an intermediate alloy CuCr and an intermediate alloy CuZr to be used as the intermediate alloy addition materials for later use; sequentially adding electrolytic copper, an antioxidant and the intermediate alloy CuCr into an induction furnace according to the proportion in parts by weight in batches, electrifying to melt for 1 hour, and then increasing the temperature to 1400 DEG C to completely melt the mixture; then adding the intermediate alloy CuZr, then increasing the temperature to 1400 DEG C, pouring after being completely melted, covering a crystallizer with carbon black when pouring to obtain the CuCrZr alloy after finishing pouring. The invention solves the problems of complicated process, overhigh production cost and low production efficiency existing in traditional vacuum fusion casting process production, the input cost of non-vacuum fusion casting equipment is only about 1/10 as much as that of vacuum fusion casting equipment, and the production efficiency thereof is more than three times as much as that of a vacuum furnace with the same capacity.
Description
Technical field
The present invention relates to a kind of melting method of Cu alloy material, particularly relate to a kind of Cu-Cr-Zr alloy under atmospheric condition,, belong to non-ferrous metal alloy smelting technique field with the method that the mode of induction furnace melting and direct chill casting is produced.
Background technology
The CuCrZr alloy belongs to sedimentation type sclerosis copper alloy, have excellent comprehensive performances such as high strength, high conductivity, high softening temperature, be mainly used in the electrode of making automatic electric welding machine, unicircuit frame material, electric railway locomotive slip, large cast steel crystallization equipment etc., its market potential is very big, and this alloy material of founding then is first procedure of producing this alloy material (wire rod, bar, sheet material etc.).
In the CuCrZr alloy production, because the chemically reactive of alloy element Cr, Zr is higher, present domestic general employing vacuum casting explained hereafter.But there are some shortcomings in this processing method, and not only complex technical process, and production efficiency is low, cost of investment is expensive.In addition, adopt the vacuum casting explained hereafter, the maximum capacity of vacuum oven has only 0.5 ton production capacity, by this technology mode production, can't satisfy electric railway locomotive slip and large cast steel crystalline material single-piece weight greater than 1 ton requirement at all, and if want the jumbo vacuum melting equipment of import, price is relatively more expensive again.Therefore, begun to adopt non-vacuum melting technique to produce this kind material in developed countries such as the U.S., Japan at present, but all needed special melting equipment, cost investment is bigger.The production in enormous quantities and the promotion and application of copper-chromium-zirconium alloy material have seriously been limited.
Summary of the invention
The objective of the invention is to overcome the deficiency that exists in the above-mentioned existing production technology, a kind of non-vacuum melting method of CuCrZr alloy is provided, promptly under atmospheric envrionment conditions, adopt induction furnace to carry out melting, and adopt the mode of direct chill casting to produce the CuCrZr alloy, be used for substituting the vacuum casting production technique that generally adopts at present both at home and abroad, it is too high to have solved production cost, the present situation that production efficiency is low, product specification is subjected to the vacuum oven capacity limit has enlarged the Application Areas and the scope of this alloy material.
The technical solution that the present invention provides is: the non-vacuum melting processing method of this CuCrZr alloy has been characterized in following steps:
1) Cr, Zr are made master alloy CuCr and master alloy CuZr, add materials for later use as master alloy;
2) preparation CuCrZr alloy: with electrolytic copper, antioxidant, master alloy CuCr is in batches successively to join in induction furnace at 97.44: 1: 2.22 by ratio of weight and the number of copies, is warming up to 1400 ℃ behind the energising fusing 1Hr, and it is melted fully.And then ratio 0.34 adds master alloy CuZr by weight, is warming up to 1400 ℃ again, treats all to pour into a mould after the fusing, covers crystallizer with carbon black during cast, and cast finishes and promptly can obtain the CuCrZr alloy;
Above-mentioned steps 2) in, antioxidant is dewatering borax and glass, and dewatering borax and weight of glass portion rate are 2: 1;
Above-mentioned steps 2) in, the weight proportion of Cr is 1.0%, and the weight proportion of Zr is: 0.20%;
Purpose to better implement the present invention, when the cast diameter was φ 100-200 ingot casting, pouring speed was 1.0mm/s.
This antivacuum casting method that can produce the CuCrZr alloy under atmospheric condition provided by the invention has fundamentally solved main added elements Cr and the Zr very easily oxidation in air in the alloy, be difficult to join the technical barrier in the melt of Cu, especially under atmospheric condition, as not taking effective technological measure, these two kinds of alloys of founding are quite difficult, so, Technology of the present invention, the very easily oxidation under atmospheric condition at Cr and Zr, the characteristics that are difficult to alloying, by making CuCr and CuZr master alloy, and the method that adds melt insulating covering agent dewatering borax and glass, realized using the technical matters of medium-frequency induction furnace melting, and implemented to produce the final effect of alloy with semi-continuous pouring type.
Compared with prior art, the invention has the beneficial effects as follows: the low problem of production cost height, production efficiency that can solve the present vacuum casting method that generally adopts of CuCrZr alloy well, and the input cost of this antivacuum smelting-casting equipment only is about 1/10 of vacuum oven smelting-casting equipment, and its production efficiency then is more than 3 times of same capability vacuum oven.Implement the present invention and can not only enhance productivity significantly, reduce cost and can satisfy single product weight such as electric railway locomotive slip, cast steel crystallizer well, solved the relevant great technical barrier that perplexs the domestic same industry greater than 1 ton requirement.
Description of drawings
Accompanying drawing is a process flow sheet of the present invention.
Embodiment
Below in conjunction with embodiment and accompanying drawing concrete technical scheme of the present invention is described further:
Embodiment 1:
The non-vacuum melting Technology of CuCrZr alloy of the present invention, undertaken by following step:
1) earlier the element of Cr, these easy oxidations of Zr is made the CuCr/CuZr master alloy, and as the raw material for standby of follow-up adding,
2) select 1.25 tons of the standard cathode copper that conform to quality requirements for use, join in 1.5 tons of medium-frequency induction furnaces, add the dewatering borax of 12.8kg and glass simultaneously as insulating covering agent, wherein dewatering borax and weight of glass ratio is set at 2: 1, electrolytic copper is melted, insulating covering agent is covered on copper melts, play the effect of avoiding it and air directly to contact; The copper water temp of fusing is brought up to about 1400 ℃, added the CuCr master alloy of 28.5kg, with its fusing, the chemical ingredients of sampling analysis Cr then, its standard ingredients by weight ratio is set at about 1.0%; After the element sampling is qualified, when melt temperature is brought up to 1400 ℃ of left and right sides once more, add the CuZr master alloy of 4.36kg rapidly, with its fusing.Wherein the ingredients by weight of Zr ratio is set in about 0.2%; When temperature is raised to 1400 ℃, can see the blue flare of insulating covering agent spray of melt liquid level in the stove, at this moment have a power failure and begin casting that mold liquid level covers tight during casting with carbon black; Finish up to whole stove copper melt casting, promptly obtain the Cu-cr-Zr alloy.
Embodiment 2:
The non-vacuum melting Technology of CuCrZr alloy of the present invention, undertaken by following step:
1) earlier the element of Cr, these easy oxidations of Zr is made the CuCr/CuZr master alloy, and as the raw material for standby of follow-up adding,
2) select 1.25 tons of the standard cathode copper that conform to quality requirements for use, join in 1.5 tons of medium-frequency induction furnaces, add the dewatering borax of 12.8kg and glass simultaneously as insulating covering agent, wherein dewatering borax and weight of glass ratio is set at 2: 1, electrolytic copper is melted, insulating covering agent is covered on copper melts, play the effect of avoiding it and air directly to contact; The copper water temp of fusing is brought up to about 1400 ℃, added the CuCr master alloy of 25.8kg, with its fusing, the chemical ingredients of sampling analysis Cr then, its standard ingredients by weight ratio is set at about 1.0%; After the element sampling is qualified, when melt temperature is brought up to 1400 ℃ of left and right sides once more, add the CuZr master alloy of 4.1kg rapidly, with its fusing.Wherein the ingredients by weight of Zr ratio is set in about 0.2%; When temperature is raised to 1400 ℃, can see the blue flare of insulating covering agent spray of melt liquid level in the stove, at this moment have a power failure and begin casting that mold liquid level covers tight during casting with carbon black; Finish up to whole stove copper melt casting, promptly obtain the Cu-cr-Zr alloy.
Embodiment 3.
The non-vacuum melting Technology of CuCrZr alloy of the present invention, undertaken by following step:
1) earlier the element of Cr, these easy oxidations of Zr is made the CuCr/CuZr master alloy, and as the raw material for standby of follow-up adding,
2) select 1.25 tons of the standard cathode copper that conform to quality requirements for use, join in 1.5 tons of medium-frequency induction furnaces, add the dewatering borax of 14kg and glass simultaneously as insulating covering agent, wherein dewatering borax and weight of glass ratio is set at 2: 1, electrolytic copper is melted, insulating covering agent is covered on copper melts, play the effect of avoiding it and air directly to contact; The copper water temp of fusing is brought up to about 1400 ℃, added the CuCr master alloy of 29.5kg, with its fusing, the chemical ingredients of sampling analysis Cr then, its standard ingredients by weight ratio is set at about 1.0%; After the element sampling is qualified, when melt temperature is brought up to 1400 ℃ of left and right sides once more, add the CuZr master alloy of 4.5kg rapidly, with its fusing.Wherein the ingredients by weight of Zr ratio is set in about 0.2%; When temperature is raised to 1400 ℃, can see the blue flare of insulating covering agent spray of melt liquid level in the stove, at this moment have a power failure and begin casting that mold liquid level covers tight during casting with carbon black; Finish up to whole stove copper melt casting, promptly obtain the Cu-cr-Zr alloy.
Claims (2)
1. the non-vacuum melting method of a Cu-Cr-Zr alloy is characterized in that following steps are arranged:
1) Cr, Zr are made master alloy CuCr and master alloy CuZr, add materials for later use as master alloy;
2) preparation CuCrZr alloy: with electrolytic copper, antioxidant, master alloy CuCr is in batches to reach the timed interval at 97.44: 1: 2.22 successively to join in the induction furnace by ratio of weight and the number of copies, be warming up to 1400 ℃ behind the energising fusing 1Hr, it is melted fully, 0.34 add master alloy CuZr by ratio of weight and the number of copies then, be warming up to 1400 ℃ again, treat all to pour into a mould after the fusing, cover crystallizer with carbon black during cast, cast finishes and promptly can obtain the CuCrZr alloy;
Above-mentioned steps 2) in, antioxidant is dewatering borax and glass, and dewatering borax and weight of glass portion rate are 2: 1;
Above-mentioned steps 2) in, the weight proportion of Cr is 1.0%, and the weight proportion of Zr is: 0.20%.
2. the antivacuum casting method of CuCrZr alloy according to claim 1 is characterized in that pouring speed is 1.0mm/s when the cast diameter is φ 100-200 ingot casting.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102266922A (en) * | 2011-06-17 | 2011-12-07 | 九星控股集团有限公司 | Non-vacuum casting and forming method of chromium zirconium copper alloy plate for continuous casting crystallizer |
| CN102560182A (en) * | 2011-12-28 | 2012-07-11 | 浦瑞霆 | Method and device for smelting CuCrZr alloy in atmosphere |
| CN108339953A (en) * | 2018-02-09 | 2018-07-31 | 陕西斯瑞新材料股份有限公司 | It is a kind of it is antivacuum under draw the production technology of continuous casting chromium-zirconium-copper slab ingot |
| CN115323216A (en) * | 2022-07-28 | 2022-11-11 | 昆明冶金研究院有限公司北京分公司 | High-performance copper alloy strip and preparation method thereof |
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| CN1488770A (en) * | 2003-09-01 | 2004-04-14 | 昆明贵金属研究所 | High-strength, High-conductivity copper-base alloy material and preparing method thereof |
| CN1861819A (en) * | 2006-04-28 | 2006-11-15 | 沈阳铜兴产业有限公司 | Non-vacuum smelting casting tech. of Cu-Cr-Zr alloy and Cu-Zr alloy |
| CN101003866A (en) * | 2006-01-16 | 2007-07-25 | 戚建萍 | Non-vacuum melting technique for high intensity, high conductive shape bar of copper, chrome, and zirconium alloy bar |
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2010
- 2010-07-21 CN CN 201010231893 patent/CN101906547A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1488770A (en) * | 2003-09-01 | 2004-04-14 | 昆明贵金属研究所 | High-strength, High-conductivity copper-base alloy material and preparing method thereof |
| CN101003866A (en) * | 2006-01-16 | 2007-07-25 | 戚建萍 | Non-vacuum melting technique for high intensity, high conductive shape bar of copper, chrome, and zirconium alloy bar |
| CN1861819A (en) * | 2006-04-28 | 2006-11-15 | 沈阳铜兴产业有限公司 | Non-vacuum smelting casting tech. of Cu-Cr-Zr alloy and Cu-Zr alloy |
Non-Patent Citations (2)
| Title |
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| 《特种铸造及有色合金》 20050430 李明茂，杨斌，王智祥 高强高导CuCrZr合金熔炼技术研究 第252-253页 1-2 第25卷, 第4期 2 * |
| 《铸造》 20070630 陈一胜,魏梅红,闫丰 高性能Cu-Cr-Zr-Mg-RE合金的熔炼 第684页第2栏至第685页第1栏最后一段 1-2 第56卷, 第6期 2 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102266922A (en) * | 2011-06-17 | 2011-12-07 | 九星控股集团有限公司 | Non-vacuum casting and forming method of chromium zirconium copper alloy plate for continuous casting crystallizer |
| CN102560182A (en) * | 2011-12-28 | 2012-07-11 | 浦瑞霆 | Method and device for smelting CuCrZr alloy in atmosphere |
| CN108339953A (en) * | 2018-02-09 | 2018-07-31 | 陕西斯瑞新材料股份有限公司 | It is a kind of it is antivacuum under draw the production technology of continuous casting chromium-zirconium-copper slab ingot |
| CN115323216A (en) * | 2022-07-28 | 2022-11-11 | 昆明冶金研究院有限公司北京分公司 | High-performance copper alloy strip and preparation method thereof |
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Application publication date: 20101208 |