CN101718491A - Process method for reopening old furnace of cored line-frequency induction electric furnace for producing copper-nickel alloy - Google Patents
Process method for reopening old furnace of cored line-frequency induction electric furnace for producing copper-nickel alloy Download PDFInfo
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- CN101718491A CN101718491A CN200910227454A CN200910227454A CN101718491A CN 101718491 A CN101718491 A CN 101718491A CN 200910227454 A CN200910227454 A CN 200910227454A CN 200910227454 A CN200910227454 A CN 200910227454A CN 101718491 A CN101718491 A CN 101718491A
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Abstract
The invention discloses a process method for reopening an old furnace of a cored line-frequency induction electric furnace for producing a copper-nickel alloy, comprising the following steps of: adding impurity components obtained by alloying and smelting electrolytic copper for diluting a smelt groove die before stopping the cored line-frequency induction electric furnace for producing the copper-nickel alloy; introducing cooling water before opening the furnace, feeding 240 V of electricity to check a main circuit, a control loop and a cooling water system in a short time; inducting and heating to smelt the smelt groove die by an iron core coil to communicate the smelt groove die by adopting a mode of adjusting the voltage to gradually and stably rise; and heating an upper hearth and the smelt groove die while feeding electricity and baking to smoothly fuse the smelt groove die in a short time. The invention ensures the reuse of the old furnace, prolongs the absolute service life of the cored line-frequency induction electric furnace, saves the fees of the cored line-frequency induction electric furnace for building and casting the furnace and reduces the production cost of each ton of products.
Description
Technical field
The invention belongs to the old stove blow-on technical field of core line frequency furnace, relate generally to a kind of process that copper-nickel alloy is reopened with the old stove that the core line frequency furnace is arranged of producing.
Background technology
In the capital equipment that the production of copper alloy is used, the major advantage of frequency cored induction furnace is: equipment investment is few, the electrical efficiency height, and the power consumption of unit product is low; Can realize not having the slag casting, ingot quality is higher; Major defect is: the core line frequency furnace that has of same capability is compared with intermediate frequency centreless electric furnace, and burn-off rate is slower, is suitable for large quantities of, continuous, single variety production, can not promptly stop promptly to open, and is difficult for the conversion alloy designations.Finish the production task blowing out at every turn, all need again cupola drop lining, the cycle is long, cost but also high not only.Concentrate the copper-nickel alloy contract of the supply of material fewer and feweri at present in enormous quantities, and replace small lot, supply contract by stages.This just reopens with the old stove that the core line frequency furnace is arranged to copper-nickel alloy and has proposed research topic.
At present, frequency cored induction furnace has adopted the heavy in section jet flow channel pattern of approval of the same trade in the world, the situation that has prevented melt overheat and caused ingot quality to degenerate takes place, in addition, because the stirring of fully flowing of melt has guaranteed the full and uniform of chemical composition.Molten channel mould is the thermal source center that frequency cored induction furnace carries out electromagnetic induction, and molten channel mould realizes the process of molten alloyization by the melt heat conduction in body of heater.Cast copper alloy core line frequency furnace comparative maturity on the baking oven technology of new stove arranged, but the process that old stove is reopened always can not be satisfactory, and particularly copper-nickel alloy has the old stove reopening process of core line frequency furnace can not obtain effective breakthrough always.In old stove was reopened, what have that the core line frequency furnace the most easily goes wrong was that disconnected ditch appears in the copper molten channel mould, causes the blow-on failure, can't ordinary production.How making copper molten channel mould smooth fusing and continuous ditch in old stove is reopened of frequency cored induction furnace, is to solve frequency cored induction furnace to stop promptly promptly to open, realize that old stove is reused and the key of increase frequency cored induction furnace productivity effect.
Summary of the invention
The objective of the invention is to propose a kind of process that copper-nickel alloy is reopened with the old stove that the core line frequency furnace is arranged of producing, its copper molten channel mould in old stove reopening process can have been melted, guarantee to have core line frequency furnace copper molten channel mould continuous ditch in stopping stove, realize old stove repeated use, improve its service efficiency aborning.
For finishing the foregoing invention purpose, the technical solution used in the present invention is: a kind of process of producing copper-nickel alloy with the old stove reopening that the core line frequency furnace is arranged, and its concrete operations step is:
A, at copper-nickel alloy with before the blowing out of core line frequency furnace is arranged, add the impurity component that waters down molten channel mould behind the cathode copper alloying smelting; The copper molten channel mould of commercial frequency cored induction furnace is to cast with the red copper material of T2D/T2 to form, impurity is few, purity is high, facilitation is logical, and used copper-nickel alloy has the core line frequency furnace, the copper molten channel mould is the same with the copper-nickel alloy material, impurity component is all greater than the red copper standard of T2D, copper-nickel alloy is harder than red copper, the fusing point height, and ductility does not have red copper good, therefore at copper-nickel alloy with before the blowing out of core line frequency furnace is arranged, water down the impurity component of molten channel mould with cathode copper, reduce the fusion temperature of molten channel mould by the component content that reduces nickel, iron and manganese in the molten channel mould, for next blow-on ready;
Lead to cooling water before b, the blow-on, send electric 240V to check in short-term whether major loop, control loop and cooling water system be normal;
After c, the affirmation normally, progressively boost by following baking oven system:
Earlier with 80 volts keep 10 hours, rise to 120 volts keep 8 hours, rise to 160 volts keep 6 hours, rise to 200 volts maintenances 6 hours, rise to 240 volts of maintenances 4 hours, rise to 260 volts of maintenances 2 hours, rise to 290 volts of maintenances and lie prostrate 2 hours molten channel mould is progressively changed logical, carry out the operation of e step then; If it is logical that molten channel mould can not be changed, then continuing up voltage per hour increases by 10 volts and progressively changes logically until molten channel mould, carries out the operation of e step then; By iron-core coil electromagnetic induction heating melting copper molten channel mould the time, adopt regulation voltage progressively steadily to rise, can make molten channel mould store more heats by increasing the molten time of rising of low temperature;
D, when sending electric oven to the heating of upper furnace and molten channel mould upper prop, promptly adopted the mode that in upper furnace, adds charcoal and heat the molten channel mould upper prop with liquefied gas baking burner hearth and electric oven, temperature when improving the molten channel mould fusing rapidly can melt molten channel mould in order to remedy molten channel mould 100 ℃ the temperature difference up and down at short notice smoothly; In order to ensure melting copper molten channel mould successfully, behind copper molten channel mould partial melting, be unlikely to occur disconnected ditch of molten channel mould local collapse or thermal stress and cause disconnected ditch, when molten channel mould melts soon, promptly when sending electricity, begin directly the molten channel mould upper prop at utmost to be improved temperature herein with vigorous fire to 240V, and the inclination body of heater is 15～20 ° angle, until molten channel mould progressively change logical after, remove liquefied gas, ajust body of heater;
E, molten channel mould progressively change logical after, add cobbing and be melted to throat completely, boost to the 400Vization material again and improve melt temperature to 1100 ℃, batch charging is altogether about 300kg then, be incubated and boost to 550V after 1 hour, fault-free then is dosed to the capacity of ordinary production again after 5 minutes, and alloy in the stove is adjusted to the copper-nickel alloy composition, ordinary production be can change in 1 hour 1350～1400 ℃ of insulations, heat conduction, melting, copper alloying production promptly carried out.
The present invention has realized old stove reopening by above-mentioned technology, has guaranteed the repeated use of old stove, has prolonged the absolute service life that the core line frequency furnace is arranged, and saves brickwork, cupola drop expense that the core line frequency furnace is arranged, reduces single ton of production cost of products.It is the capital equipment of production of copper alloy product that the core line frequency furnace is arranged, realize old stove reopening, the disconnected ditch phenomenon of molten channel mould does not appear, make production can adapt to the changes in demand in market, can in time arrange the blowing out blow-on according to turn of the market, time benefit in not only having striven for producing, also having saved has core line frequency furnace insulation power consumption to be produced, not only energy-saving and cost-reducing but also reduce production costs.
Description of drawings
Fig. 1 is the structural representation of copper molten channel mould among the present invention.
Among the figure: 1, channel side column, 2, the channel center pillar, 3, the channel upper prop, 4, the channel lower prop, A, B, C three places are places of molten channel mould easy fracture.
The specific embodiment
The embodiment that provides is in conjunction with the accompanying drawings further specified the present invention:
A kind of process of producing copper-nickel alloy with the old stove reopening that the core line frequency furnace is arranged, its concrete operations step is:
A, at copper-nickel alloy with before the blowing out of core line frequency furnace is arranged, water down the impurity component of molten channel mould behind the adding cathode copper alloying smelting, the composition of copper-nickel alloy molten channel mould nickel when old stove is reopened is dropped to less than 3%, the composition of iron and manganese drops to less than 0.5% simultaneously, reduce the logical temperature of channel modelling by the component content that reduces nickel, iron and manganese in the molten channel mould, for next blow-on is got ready;
Lead to cooling water before b, the blow-on, send electric 240V to check in short-term whether major loop, control loop and cooling water system be normal;
After c, the affirmation normally, progressively boost by following baking oven system:
Earlier with 80 volts keep 10 hours, rise to 120 volts keep 8 hours, rise to 160 volts keep 6 hours, rise to 200 volts maintenances 6 hours, rise to 240 volts of maintenances 4 hours, rise to 260 volts of maintenances 2 hours, rise to 290 maintenances and lie prostrate 2 hours molten channel mould is progressively changed logical, carry out the operation of e step then; If it is logical that molten channel mould can not be changed, then continuing up voltage per hour increases by 10 volts and progressively changes logically until molten channel mould, carries out the operation of e step then;
D, when sending electric oven to the heating of upper furnace and molten channel mould upper prop, promptly adopted the mode that in upper furnace, adds charcoal and heat the molten channel mould upper prop with liquefied gas baking burner hearth and electric oven, temperature when improving the molten channel mould fusing rapidly can melt molten channel mould in order to remedy molten channel mould 100 ℃ the temperature difference up and down at short notice smoothly; When molten channel mould melts soon, promptly sending electricity to begin directly the molten channel mould upper prop at utmost to be improved temperature herein during to 240V, and the inclination body of heater is 15～20 ° angle with vigorous fire, until molten channel mould progressively change logical after, remove liquefied gas, ajust body of heater;
E, molten channel mould progressively change logical after, add cobbing and be melted to throat completely, boost to the 400Vization material again and improve melt temperature to 1100 ℃, batch charging is altogether about 300kg then, be incubated and boost to 550V after 1 hour, fault-free then is dosed to the capacity of ordinary production again after 5 minutes, and melt in the stove is adjusted into the copper-nickel alloy composition, ordinary production be can change in 1 hour 1350～1400 ℃ of insulations, heat conduction, melting, copper alloying production promptly carried out.
Claims (1)
1. produce the process that copper-nickel alloy is reopened with the old stove that the core line frequency furnace is arranged for one kind, it is characterized in that: the process that described old stove is reopened, its concrete operations step is:
A, at copper-nickel alloy with before the blowing out of core line frequency furnace is arranged, add the impurity component that waters down molten channel mould behind the cathode copper alloying smelting; The copper molten channel mould of commercial frequency cored induction furnace is to cast with the red copper material of T2D/T2 to form, impurity is few, purity is high, facilitation is logical, and used copper-nickel alloy has the core line frequency furnace, the copper molten channel mould is the same with the copper-nickel alloy material, impurity component is all greater than the red copper standard of T2D, copper-nickel alloy is harder than red copper, the fusing point height, but ductility does not have red copper good, therefore at copper-nickel alloy with before the blowing out of core line frequency furnace is arranged, water down the impurity component of molten channel mould with cathode copper, reduce the logical temperature of channel modelling by the component content that reduces nickel, iron and manganese in the molten channel mould, for next blow-on is got ready;
Lead to cooling water before b, the blow-on, send electric 240V to check in short-term whether major loop, control loop and cooling water system be normal;
After c, the affirmation normally, progressively boost by following baking oven system:
Earlier with 80 volts keep 10 hours, rise to 120 volts keep 8 hours, rise to 160 volts keep 6 hours, rise to 200 volts maintenances 6 hours, rise to 240 volts of maintenances 4 hours, rise to 260 volts of maintenances 2 hours, rise to 290 maintenances and lie prostrate 2 hours molten channel mould is progressively changed logical, carry out the operation of e step then; If it is logical that molten channel mould can not be changed, then continuing up voltage per hour increases by 10 volts and progressively changes logically until molten channel mould, carries out the operation of e step then; By iron-core coil electromagnetic induction heating melting copper molten channel mould the time, adopt regulation voltage progressively steadily to rise, can make molten channel mould store more heats by increasing the molten time of rising of low temperature;
D, when sending electric oven to the heating of upper furnace and molten channel mould upper prop, promptly adopted the mode that in upper furnace, adds charcoal and heat the molten channel mould upper prop with liquefied gas baking burner hearth and electric oven, temperature when improving the molten channel mould fusing rapidly can melt molten channel mould in order to remedy molten channel mould 100 ℃ the temperature difference up and down at short notice smoothly; In order to ensure melting copper molten channel mould successfully, behind copper molten channel mould partial melting, be unlikely to occur the disconnected ditch of molten channel mould local collapse, when molten channel mould melts soon, promptly when sending electricity, begin directly the molten channel mould upper prop at utmost to be improved temperature herein with vigorous fire to 240V, and the inclination body of heater is 15～20 ° angle, until molten channel mould progressively change logical after, remove liquefied gas, ajust body of heater;
E, molten channel mould progressively change logical after, add cobbing and be melted to throat completely, boost to the 400Vization material again and improve melt temperature to 1100 ℃, batch charging is altogether about 300kg then, be incubated and boost to 550V after 1 hour, fault-free then is dosed to the capacity of ordinary production again after 5 minutes, and melt in the stove is adjusted into the copper-nickel alloy composition, ordinary production be can change in 1 hour 1350～1400 ℃ of insulations, heat conduction, melting, copper alloying production promptly carried out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2009102274541A CN101718491B (en) | 2009-12-14 | 2009-12-14 | Process method for reopening old furnace of cored line-frequency induction electric furnace for producing copper-nickel alloy |
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| CN2009102274541A CN101718491B (en) | 2009-12-14 | 2009-12-14 | Process method for reopening old furnace of cored line-frequency induction electric furnace for producing copper-nickel alloy |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101988178A (en) * | 2010-09-21 | 2011-03-23 | 浙江华达钢业有限公司 | Direct melting method for zinc pot of hot dipped aluminum-zinc steel sheet production line |
| CN102798289A (en) * | 2012-06-25 | 2012-11-28 | 新兴铸管（浙江）铜业有限公司 | Emergency method for channel breakage of power frequency cored induction electric furnace for pure copper smelting |
| CN102878805A (en) * | 2012-09-17 | 2013-01-16 | 山西春雷铜材有限责任公司 | Method for stopping and opening power frequency cored induction copper melting furnace for red copper |
| CN104596317A (en) * | 2015-01-28 | 2015-05-06 | 白银有色集团股份有限公司 | Power frequency core electric furnace production stop and production recovery cold start boiler melting start process in zinc casting |
| CN106895702A (en) * | 2017-03-06 | 2017-06-27 | 山东祥瑞铜材有限公司 | It is a kind of to tackle method, the production technology of oxygen-free copper bar that channel disconnects failure |
| CN109722549A (en) * | 2019-01-25 | 2019-05-07 | 北京科技大学 | A method of extending regeneration brass line frequency furnace service life |
| CN111809064A (en) * | 2020-07-13 | 2020-10-23 | 重庆龙煜精密铜管有限公司 | Reserved melting groove type melting process for red copper melting furnace |
| CN114369721A (en) * | 2021-12-14 | 2022-04-19 | 山西平阳重工机械有限责任公司 | Operation method for melting steel body of squat furnace by medium-frequency induction steel furnace |
| CN115493402A (en) * | 2022-08-29 | 2022-12-20 | 金川集团股份有限公司 | Method for solidification and secondary melting of melting channel of power frequency induction furnace |
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- 2009-12-14 CN CN2009102274541A patent/CN101718491B/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101988178A (en) * | 2010-09-21 | 2011-03-23 | 浙江华达钢业有限公司 | Direct melting method for zinc pot of hot dipped aluminum-zinc steel sheet production line |
| CN101988178B (en) * | 2010-09-21 | 2012-08-08 | 浙江华达钢业有限公司 | Direct melting method for zinc pot of hot dipped aluminum-zinc steel sheet production line |
| CN102798289A (en) * | 2012-06-25 | 2012-11-28 | 新兴铸管（浙江）铜业有限公司 | Emergency method for channel breakage of power frequency cored induction electric furnace for pure copper smelting |
| CN102878805A (en) * | 2012-09-17 | 2013-01-16 | 山西春雷铜材有限责任公司 | Method for stopping and opening power frequency cored induction copper melting furnace for red copper |
| CN104596317A (en) * | 2015-01-28 | 2015-05-06 | 白银有色集团股份有限公司 | Power frequency core electric furnace production stop and production recovery cold start boiler melting start process in zinc casting |
| CN106895702A (en) * | 2017-03-06 | 2017-06-27 | 山东祥瑞铜材有限公司 | It is a kind of to tackle method, the production technology of oxygen-free copper bar that channel disconnects failure |
| CN106895702B (en) * | 2017-03-06 | 2020-01-31 | 山东祥瑞铜材有限公司 | method for coping with disconnection fault of molten channel and production process of oxygen-free copper rod |
| CN109722549A (en) * | 2019-01-25 | 2019-05-07 | 北京科技大学 | A method of extending regeneration brass line frequency furnace service life |
| CN111809064A (en) * | 2020-07-13 | 2020-10-23 | 重庆龙煜精密铜管有限公司 | Reserved melting groove type melting process for red copper melting furnace |
| CN114369721A (en) * | 2021-12-14 | 2022-04-19 | 山西平阳重工机械有限责任公司 | Operation method for melting steel body of squat furnace by medium-frequency induction steel furnace |
| CN114369721B (en) * | 2021-12-14 | 2024-01-23 | 山西平阳重工机械有限责任公司 | Operation method for melting squat furnace steel body of medium-frequency induction steel furnace |
| CN115493402A (en) * | 2022-08-29 | 2022-12-20 | 金川集团股份有限公司 | Method for solidification and secondary melting of melting channel of power frequency induction furnace |
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