CN101733392B - Technology for casting copper alloy under non-vacuum conditions by adding zirconium - Google Patents
Technology for casting copper alloy under non-vacuum conditions by adding zirconium Download PDFInfo
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Abstract
The invention relates to a technology for casting copper alloy under non-vacuum conditions by adding zirconium, which is characterized by comprising the following steps: carrying out dosing according to proportion by weight; successively pouring the components into a induction smelting furnace (1), refining the components and carrying out heat preservation; then opening a sealing furnace cover toadd Cu-Cr intermediate alloy or pure metal Cr and then melting the mixture after the furnace cover is closed; injecting high-purity protective gas for protection; opening the sealing furnace cover and adding Cu-Zr intermediate alloy or pure metal Zr; melting the mixture after the furnace cover is closed and then casting; in the process of casting, adopting a sealing tooling device protected by protective gas 'high-purity argon'; injecting the argon into a crystallizer (5) through a protective cover (4) injected with protective gas from a gate tile (3); in the invention, in the process of casting copper alloy, the non-vacuum zirconium addition technology is adopted, thus obtaining various copper alloy ingot casting blank containing zirconium, then the follow-up deformation and processing is carried out on the blank to obtain various copper processed products.
Description
[technical field]
The present invention relates to the nonferrous materials processing technique field, especially a kind of copper alloy antivacuum adding zirconium method for founding.
[background technology]
The application is for dividing an application, original bill application title; Copper alloy antivacuum adding zirconium through engineering approaches technical equipment and process, original bill application number: 200810049523.X; The original bill applying date: on April 11st, 2008.
Known, that adds zirconium and other element in copper alloy contains the zirconium copper products, owing to having the combination properties such as good conduction, heat conduction, high temperature resistance be softening concurrently, at domain requirement rapid growths such as electronic material, welding electrode material, crystallizer materials.Especially Cu-Cr-Zr is associated the still high-strength highly-conductive type alloy of tool glamour of gold copper-base alloy, is the emphasis that world industry state competitively researches and develops for the development of satisfying large scale integrated circuit.The technological difficulties that such alloy production is outstanding are the antivacuum problems that add that solve zr element, otherwise can't carry out through engineering approaches production, more can't industrial mass use.
Because Zr element activity is too strong, oxidization burning loss very easily under atmospheric conditions contains the zirconium copper alloy material and generally all adopts the vacuum induction furnace melting, the mode of production of pig mold cast.This method cost is high, equipment investment is large, and production capacity is low.Owing to containing the production method of failing to break through vacuum drying oven on zirconium copper alloy material founding production technology always, can only small lot batch manufacture, be difficult to form through engineering approaches production capacity.
Being associated the domestic traditional production method of gold copper-base alloy as Cu-Cr-Zr is: vacuum melting---hot rolling cogging---cold working---heat treatment.This method cost is high, technological process is long, equipment investment is large.Fail to break through traditional vacuum strand production method due to technical always, can only small lot trial-production produce, be difficult to form industrialization production capacity.The Cu-Cr-Zr of present domestic use is associated gold copper-base alloy except the military project material, civilian almost all imports.
Domestic vacuum drying oven is produced the technological process that Cu-Cr-Zr is associated golden strand: charging------fusing---refining---add Cr------adding Zr---casting of rushing argon gas in stove, the casting mode is: stove---funnel---hot top---pig mold that close stove evacuation.Compare with the D.C.casting mode, mainly there is following problem in this kind mode of production:
(1), environmental pollution is serious.Pig mold must swabbing and baking, and pig mold generally smoked benzene forms the isolated high-temperature copper liquid of one deck refractory coating to the erosion of pig mold, and benzene is volatile, and is poisonous and surrounding environment is caused severe contamination to human body.Although also develop at present other coating, exist because operation is upper to be difficult to brush evenly, to be difficult to the problems such as baking is dry, coating is difficult to deposit, benzene mode that mainly adopt during many enterprise practicals are produced or smoked.
(2), yield rate is low.The mold casting must be carried out feeding at last, and the mold size is larger, and the hot top corresponding size also will increase, and how much waste products that hot top causes are many; The ingot surface quality that pig mold is produced is generally relatively poor, and it is larger that the mold size is had a mind to design by many enterprises, adopts the mode of ingot casting railway carriage to supply qualified strand, causes equally waste product how much; The defective such as casting billet surface easily produces the cavity, be mingled with causes whole ingot casting to scrap.
(3), production efficiency is low.The general capacity of vacuum drying oven is less; melt furnace charge casting one stove, can not improve production capacity in the mode that smelting furnace is combined with holding furnace, and for protecting crucible and guaranteeing that the in-mold molten body solidifies fully; generally to stagnate more than 40 minutes after casting and just can open bell, carry out the preparation of next stove.
(4), production operation is loaded down with trivial details.The every use of mold once must swabbing, and effectively toasts, and also wants the tool and moulds such as baking and thermal insulation cap, die-cushion, every casting once must be in stove again accurately the location put and shift to an earlier date baked series matching tool and mould, the production operation program is various.
External Cu-Cr-Zr is associated gold copper-base alloy production; adopt antivacuum production new technology to begin to attempt; but due to factors such as foreign technology blockade and intellectual property protection, external Cu-Cr-Zr is associated the antivacuum production technology of gold copper-base alloy know little about it, does not also find the report of related content.
[summary of the invention]
In order to overcome the deficiency in background technology, the object of the invention is to provide a kind of copper alloy antivacuum adding zirconium method for founding, copper alloy antivacuum adding zirconium method for founding of the present invention, be that thereby the metal liquid in the smelting furnace adds the metal zirconium Foundry Production and goes out blank under non-true condition, specifically in the copper alloy fusion-casting process, utilize antivacuum adding zirconium process, obtain to contain the various copper alloy casting ingot blanks of zirconium, then obtain various copper converted products through deformation after unloading processing.
Described copper alloy antivacuum adding zirconium method for founding has utilized a kind of device for casting copper alloy under antivacuum conditions by adding zirconium, and this smelting-casting equipment comprises: induction melting furnace, sealing frock, gate spool, protective cover, crystallizer; By bolt or be welded and fixed sealing frock, sealing frock other end bottom is fixed with gate spool in induction melting furnace top one side, and the gate spool lower end is inserted crystallizer by protective cover and formed complete device for casting copper alloy under antivacuum conditions by adding zirconium.
A kind of copper alloy antivacuum adding zirconium method for founding, wherein make alloy designations: QCr0.6-0.4-0.05, specification: 210 * 620mm, described method for founding comprises the steps:
1), prepare burden by weight, successively drop into induction melting furnace and carry out melting, wherein adopt composite fluxing agent to cover in stove, smelting temperature be 1200～1400 ℃ dissolve after;
2), again after adopting 10～60min to be incubated after 1150 ℃～1350 ℃ refinings;
3), open the sealing bell and add the mode of Cu-Cr intermediate alloy or simple metal Cr to add, and build bell and melt;
4), be filled with high-purity protective gas " high-purity argon gas " in stove and protect after:
5) and then open the sealing bell and adopt the mode with Cu-Zr intermediate alloy or simple metal Zr to add, after building bell and melting, cast;
6), in casting process, melt is by the sealing frock of smelting furnace by adopting protective gas " high-purity argon gas " to protect, inject crystallizer from the protective cover of gate spool through being connected with protective gas, place protective cover on crystallizer and do lubricant in crystallizer with composite fluxing agent;
Wherein first pass into high-purity argon gas 2～15min before the casting, driveing the air in sealing frock and gate spool and protective cover, and adopt all the time protective gas protection in casting process, founding becomes blank, and described blank shape is ingot blank.
Owing to having adopted technique scheme, beneficial effect of the present invention is:
1, the present invention compares with existing vacuum melting, hot rolling cogging, cold working, Technology for Heating Processing, owing to failing to break through traditional vacuum strand production method on prior art always, can only small lot trial-production produce, and is difficult to form industrialization production capacity.Antivacuum adding zirconium technique of the present invention, cost is low, technological process is short, do not need subsequent heat treatment, equipment investment is few, free from environmental pollution, efficient is high, cost is low, easy to operate.2, the present invention can replace the copper alloy vacuum zirconium method in existing copper processing, take antivacuum adding zirconium process and device as the basis, also can add other alloying element in the alloy casting process, then through deformation after unloading processing, exploitation and composition goes out more copper alloy product.Yield rate and production efficiency improve greatly; Swabbing toasts mold, environmental contamination reduction again; Need not vacuumize, need not toast supporting auxiliary tool and mould, kinetic energy consumption reduces; Save the tool and moulds such as funnel, hot top, graphite die-cushion, and the D.C.casting water mold life-span be generally more than 30 times of pig mold, the tool and mould consumption costs reduces greatly; Equipment investment is little; Contain the zirconium copper alloy production capacity and significantly improve, economies of scale is remarkable.
[description of drawings]
Below in conjunction with accompanying drawing, the present invention is further described;
Fig. 1 is device therefor structural representation of the present invention;
In the drawings: 1, induction melting furnace; 2, sealing frock; 3, gate spool; 4, protective cover; 5, crystallizer.
[specific embodiment]
Disclose purpose of the present invention and be intended to protect all changes and improvements in the scope of the invention, the present invention is not limited to the following examples.
Implement copper alloy antivacuum adding zirconium casting method embodiment 1 of the present invention:
Make the blank technique of alloy designations: QCr0.6-0.4-0.05 " standard GB/T/the 8th page of T 5231-2001 explains relevant for the content of QCr0.6-0.4-0.05; so the present invention will not describe in detail, moreover described content does not belong to protection scope of the present invention " specification: 210 * 620mm:
adopt: the weight ratio with reference to standard GB/T/T 5231-2001 is prepared burden, and successively drops into induction melting furnace 1 and carries out melting, adopts composite fluxing agent to cover in stove, smelting temperature be 1200～1400 ℃ dissolve after, again after adopting 10～60min to be incubated after 1150 ℃～1350 ℃ refinings, opening the sealing bell adds the Cu-Cr intermediate alloy and builds bell and melt, after being filled with high-purity protective gas in stove and protecting: open again the sealing bell and adopt the mode with the Cu-Zr intermediate alloy to add, after building bell and melting, cast, in casting process, melt is by the sealing frock 2 of smelting furnace by adopting protective gas to protect, protective cover 4 from gate spool 3 through being connected with protective gas injects crystallizer 5, place protective cover on crystallizer and do lubricant in crystallizer with composite fluxing agent, first pass into high-purity argon gas 2～15min before casting, to drive the air in sealing frock and gate spool and protective cover, and adopt all the time protective gas protection in casting process, founding becomes ingot blank or slab ingot or blank.
Implement copper alloy antivacuum adding zirconium casting method embodiment 2 of the present invention:
Make alloy designations: the technique of QCr0.6-0.4-0.05 specification: 210 * 620mm:
Adopt: the weight ratio with reference to standard GB/T/T 5231-2001 is prepared burden, and successively drops into induction melting furnace 1 and carries out melting, adopts composite fluxing agent to cover in stove, smelting temperature be 1200～1400 ℃ dissolve after; Again after adopting 10～60min to be incubated after 1150 ℃～1350 ℃ refinings; Opening the sealing bell adds simple metal Cr again and builds bell and melt; Be filled with high-purity argon gas in stove: open again bell and adopt the mode with simple metal Zr to add, after building bell and melting; Cast; in casting process; melt is by the sealing frock 2 of smelting furnace 1 by adopting high-purity argon gas to protect; protective cover 4 from gate spool 3 through being connected with protective gas flows into crystallizer 5; crystallizer top is placed protective cover and is done lubricant in crystallizer with composite fluxing agent, first passes into high-purity argon gas 2～15min before casting, to drive the air in sealing frock and gate spool and protective cover; and adopt all the time protective gas protection in casting process, founding becomes ingot blank or slab ingot or blank.
Implement copper alloy antivacuum adding zirconium casting method embodiment 3 of the present invention:
Induction melting furnace top one side is bolted sealing device, and sealing device other end bottom is fixed with gate spool, and crystallizer is inserted by protective cover in the gate spool lower end.
Implement copper alloy antivacuum adding zirconium casting method embodiment 4 of the present invention:
Induction melting furnace top one side is by being welded and fixed sealing device, and sealing device other end bottom is fixed with gate spool, and gate spool one end inserts crystallizer by protective cover.
Claims (1)
1. copper alloy antivacuum adding zirconium method for founding, wherein make alloy designations: QCr0.6-0.4-0.05, specification: 210 * 620mm is characterized in that: described method for founding comprises the steps:
1), prepare burden by weight, successively drop into induction melting furnace (1) and carry out melting, wherein adopt composite fluxing agent to cover in stove, smelting temperature be 1200～1400 ℃ melt after;
2), again after adopting 10～60min to be incubated after 1150 ℃～1350 ℃ refinings;
3), open the sealing bell and add the mode of Cu-Cr intermediate alloy or simple metal Cr to add, and build bell and melt;
4), be filled with high-purity protective gas " high-purity argon gas " in stove and protect after:
5) and then open the sealing bell and adopt the mode with Cu-Zr intermediate alloy or simple metal Zr to add, after building bell and melting, cast;
6), in casting process, melt is by the sealing frock (2) of smelting furnace by adopting protective gas " high-purity argon gas " to protect, protective cover (4) from gate spool (3) through being connected with protective gas injects crystallizer (5), places protective cover on crystallizer and does lubricant in crystallizer with composite fluxing agent;
Wherein first pass into high-purity argon gas 2～15min before the casting, driveing the interior air of sealing frock and gate spool (3) and protective cover (4), and adopt all the time protective gas protection in casting process, founding becomes blank, and described blank shape is ingot blank.
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| CN 200910210375 CN101733392B (en) | 2008-04-11 | 2008-04-11 | Technology for casting copper alloy under non-vacuum conditions by adding zirconium |
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| CN 200910210375 CN101733392B (en) | 2008-04-11 | 2008-04-11 | Technology for casting copper alloy under non-vacuum conditions by adding zirconium |
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| CNA200810049523XA Division CN101254530A (en) | 2008-04-11 | 2008-04-11 | Copper alloy antivacuum adding Zircomium engineering technology equipment and technological process thereof |
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| CN101733392A CN101733392A (en) | 2010-06-16 |
| CN101733392B true CN101733392B (en) | 2013-06-12 |
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| CN102266922B (en) * | 2011-06-17 | 2013-04-03 | 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 |
| CN103184357B (en) * | 2011-12-29 | 2015-04-01 | 北京新北铜铝业有限责任公司 | Method of non-vacuum melting and casting copper-chromium-zirconium alloy |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN1865467A (en) * | 2006-06-02 | 2006-11-22 | 苏州有色金属加工研究院 | Method for non-vacuum melting and casting Cu-Cr-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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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN1865467A (en) * | 2006-06-02 | 2006-11-22 | 苏州有色金属加工研究院 | Method for non-vacuum melting and casting Cu-Cr-Zr alloy |
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| JP特开平10-216905A 1998.08.18 |
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Effective date of registration: 20170817 Address after: 471039 No. 50, Jianxi, Luoyang District, Henan, Jianshe Road Patentee after: China Aluminum Luoyang Copper Processing Co., Ltd. Address before: 471039 No. 50, Jianxi, Luoyang District, Henan, Jianshe Road Patentee before: Zhonglu Luoyang Copper Industry Co., Ltd. |
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