CN105603225A - Brass alloy smelting device and brass alloy smelting method - Google Patents
Brass alloy smelting device and brass alloy smelting method Download PDFInfo
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- CN105603225A CN105603225A CN201610045427.2A CN201610045427A CN105603225A CN 105603225 A CN105603225 A CN 105603225A CN 201610045427 A CN201610045427 A CN 201610045427A CN 105603225 A CN105603225 A CN 105603225A
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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
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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
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Abstract
The invention discloses a brass alloy smelting device and a brass alloy smelting method. The technical problem of poor quality of brass alloy cast ingots produced by adopting a brass alloy smelting device and a brass alloy smelting method in the prior art is solved. The brass alloy smelting device comprises a smelting furnace and an electromagnetic generator installed on the smelting furnace, wherein the electromagnetic generator is used for exerting electromagnetic disturbance on the smelting furnace, and an alloy melt in the smelting furnace is forced to produce convection under the effect of the electromagnetic disturbance. The brass alloy smelting method comprises the steps of firstly calculating the weights of brass alloy returns, pure copper and pure zinc required during brass alloy smelting, then adding the brass alloy returns, the pure copper and a composite covering agent to the smelting furnace to form the alloy melt, heating the alloy melt to be in a molten state, then adding the pure zinc to the smelting furnace for several times, exerting the electromagnetic disturbance on the alloy melt through the electromagnetic generator and finally starting to perform horizontal continuous casting when the temperature in the smelting furnace reaches discharging temperature.
Description
[technical field]
The present invention relates to metal and alloy material preparing technical field thereof, relate in particular to the molten of a kind of brass alloysRefining device and brass alloys method of smelting.
[background technology]
The alloy that brass alloys are made up of copper and zinc, according to copper shared proportion difference in alloy, HuangCopper alloy is divided into again the brass alloys of the trades mark such as H62, H65, H68, H70, H85, H90, due to brassAlloy has good mechanical property, processing performance and corrosion resistance, and a part of brass alloys also have higherElectric conductivity, cutting ability and anti-wear performance, therefore brass alloys are purposes materials the most widely in copper alloyMaterial.
Brass alloys fusion process is to determine alloying elements distribution, gas content, slag inclusion volume fraction and evenThe key one of whole mechanical property quality is encircled, and whether the accurate control of tapping temperature and melt internal temperature field be equalEven extremely important for preparing the ingot casting that quality is qualified. Because zinc element is most important in basis brass alloyInterpolation element, and its fusing point only has 419.6 DEG C, boiling point also only has 907 DEG C, with respect to 1084 DEG C of fine copper fusing pointsVery low, thereby zinc element can seethe with excitement and evaporate in high melt and insulating process, and can be at airMiddle oxidation, this is common flame phenomenon. Because the volatilization of zinc can be conducive to various gas in alloy melt(H2、O2) eliminating, therefore flame has become the main technique means of all Mock platina degasification deslagging refinings.In addition,, concerning a certain brass alloys, its flame temperature is determined, thereby Mock platina can basisFlame degree and number of times determine whether and reach the pouring temperature of coming out of the stove.
Generally, the non-uniform temperature of the alloy melt in smelting furnace, the flame phenomenon of alloy melt is alsoInhomogeneous, the alloy melt flame phenomenon that temperature is high is violent, alloy melt flame phenomenon that temperature is low faint orWithout flame phenomenon; In addition,, in actual production, add because zinc element all adopts artificial bulk, and carry outArtificial stirring, labour intensity is large, therefore causes the skewness of zinc element in alloy melt, thereby makesBecome the inhomogeneous of flame phenomenon, the inhomogeneous meeting of flame phenomenon makes technical staff at brass alloys fusion processIn cannot accurately control flame degree and the number of times of alloy melt, and then cannot accurately control watering of alloy meltNote temperature, in addition, the skewness of zinc element in alloy melt also can produce gross segregation phenomenon, fallsThe quality of low ingot casting.
[summary of the invention]
Problem to be solved by this invention is just to provide a kind of smelting apparatus and brass alloys melting of brass alloysLow-alloyed gross segregation phenomenon, can fall in method, improves ingot quality.
For solving the problems of the technologies described above, the present invention adopts following technical scheme:
A kind of brass alloys smelting apparatus, comprises smelting furnace and is arranged on the electromagnetic generator on smelting furnace, instituteState electromagnetic generator for smelting furnace is applied to electromagnetic distu, the alloy melt in smelting furnace is at electromagnetic distuThe lower generation of forced convection current of effect.
Brass alloys smelting apparatus of the present invention is provided with electromagnetic generator, electromagnetic generator on smelting furnaceCan apply electromagnetic distu to smelting furnace, make the alloy melt in smelting furnace produce convection current, i.e. each portion in smelting furnaceDivide between alloy melt and occur to flow, in the present invention, electromagnetic generator makes alloy melt generation convection current have followingBenefit: 1, make, between alloy melt that alloy melt that temperature in smelting furnace is low and temperature are high, heat occursTransmit, thereby reduced the thermograde of alloy melt, impel flame phenomenon even, to accurately control and waterNote temperature; 2, zinc element can be evenly distributed in alloy melt, reduce the gross segregation degree of ingot casting;3, the oxidizing slag of alloy melt inside and gas are risen to the surface, thereby play the effect of degasification slagging-off.
The first specific embodiments: described electromagnetic generator comprises that the first electromagnetic generator and the second electromagnetism occurDevice, described the first electromagnetic generator is arranged on smelting furnace bottom, erects so that the alloy melt in smelting furnace producesNogata to convection current, described the second electromagnetic generator is arranged on smelting furnace sidepiece, so that the alloy in smelting furnaceMelt produces the convection current of horizontal direction. So design, can make the flow direction of the alloy melt in smelting furnace manySample, thus the thermograde of reduction alloy melt impels zinc element can more be evenly distributed in alloyIn melt, further improve the quality of ingot casting.
The second specific embodiments: described melting furnace wall is flame retardant coating, and described electromagnetic generator is arranged on fire-resistantIn layer. So design, reduced the installing space of smelting furnace.
The 3rd specific embodiments: described brass alloys smelting apparatus also comprises circulating water pond, described circulationOn water cooling pond, be connected with water inlet pipe and outlet pipe, described water inlet pipe and outlet pipe are communicated with flame retardant coating. So establishMeter, can carry out effective radiating treatment to flame retardant coating, prevents that the coil of electromagnetic generator from damaging.
A kind of brass alloys method of smelting, comprises smelting furnace and is arranged on the electromagnetic generator on smelting furnace, instituteState electromagnetic generator for smelting furnace is applied to electromagnetic distu, the alloy melt in smelting furnace is at electromagnetic distuThe lower generation of forced convection current of effect, described brass alloys method of smelting comprises the following steps: first, calculate HuangRequired raw-material weight when smelting copper alloy, raw material comprise brass alloys foundry returns, fine copper and pure zinc,Then brass alloys foundry returns, fine copper and composite covering agent are added and in smelting furnace, form alloy melt, and willAlloy melt is heated to molten state, subsequently pure zinc is joined in smelting furnace several times, occurs by electromagnetismDevice alloy melt applies electromagnetic distu, finally in the time that the temperature in smelting furnace reaches tapping temperature, start intoRow horizontal continuous-casting.
In brass alloys method of smelting in the present invention, by electromagnetic generator, smelting furnace is produced to electromagnetic distu,Make alloy melt produce convection current, the mobile meeting of alloy melt make alloy melt that the temperature in smelting furnace is low andBetween the high alloy melt of temperature, there is heat transmission, thereby reduced the thermograde of alloy melt, impelFlame phenomenon is even, to accurately control pouring temperature, in addition, flowing of alloy melt can make the zinc that addsElement can be evenly distributed in wherein, and after horizontal continuous-casting, the gross segregation degree of ingot casting is obviousReduce, last, the mobile meeting of alloy melt rises to the surface inner oxidizing slag and gas, removes thereby playThe effect of gas slagging-off. Compared with prior art, the brass alloys method of smelting in the present invention can make flame phenomenonEvenly, reduce the gross segregation degree of brass alloys, and gas in brass alloys and the content of oxidizing slag,Thereby the quality that has improved brass alloys ingot castings, has ensured the performance that brass alloys are good.
The first specific embodiments: described electromagnetic generator comprises that the first electromagnetic generator and the second electromagnetism occurDevice, described the first electromagnetic generator is arranged on smelting furnace bottom, erects so that the alloy melt in smelting furnace producesNogata to convection current, described the second electromagnetic generator is arranged on smelting furnace sidepiece, so that the alloy in smelting furnaceMelt produces the convection current of horizontal direction. So design, can make the flow direction of the alloy melt in smelting furnace manySample, thus the thermograde of reduction alloy melt impels zinc element can more be evenly distributed in alloyIn melt, further improve the quality of ingot casting.
The second specific embodiments: the magnetic induction that described the first electromagnetic generator and the second electromagnetic generator applyIntensity is 5mT～20mT. So design, the electromagnetic distu effect that now electromagnetic generator produces smelting furnaceBest, flame phenomenon is more even, and the distribution of zinc element in melt is more even, the ingot quality obtainingBetter.
The 3rd specific embodiments: the frequency of described the first electromagnetic generator is 50Hz. So design, both protectedCard alloy melt produces convection current, can ensure that again the flow effect of alloy melt is best.
The 4th specific embodiments: the frequency range of described the second electromagnetic generator is 3Hz～50Hz. SoDesign, can avoid alloy melt generation vigorous agitation, splashes and oxidative phenomena, can make again flameHomogenising degree is better.
The 5th specific embodiments: described tapping temperature is 1060 DEG C. So design, can ensure brass alloysContinuous casting tissue good, without gross imperfection.
These features of the present invention and advantage will be below detailed description of the invention, accompanying drawing in detailed exposure.
[brief description of the drawings]
Below in conjunction with accompanying drawing, the present invention is described further:
Fig. 1 is the structural representation of brass alloys smelting apparatus in the embodiment of the present invention one;
Fig. 2 is the structural representation of brass alloys smelting apparatus in the embodiment of the present invention two;
Fig. 3 is the structural representation of brass alloys smelting apparatus in the embodiment of the present invention three.
[detailed description of the invention]
Accompanying drawing below in conjunction with the embodiment of the present invention makes an explanation and says the technical scheme of the embodiment of the present inventionBright, but following embodiment is only the preferred embodiments of the present invention, not all. Based on the reality in embodimentExecute example, those skilled in the art are other embodiment that obtains under the prerequisite of not making creative work, allBelong to protection scope of the present invention.
As shown in Figure 1, the brass alloys smelting apparatus in the present invention, comprise smelting furnace 1, electromagnetic generator andPower supply 3, electromagnetic generator is arranged on smelting furnace 1, and power supply 3 is connected with electromagnetic generator, in smelting furnace 1Alloy melt is housed, and the smelting furnace 1 in the present invention adopts commercial frequency cored induction furnace, can effectively utilize useless stoveMaterial, reduces melting cost, and commercial frequency cored induction furnace is to utilize the Induction Heating effect of alloy melt in stove and addThe induction furnace of heat or melted alloy melt, the critical piece of commercial frequency cored induction furnace has inductor, body of heater, electricityAppearance and control system etc., under alternating electromagnetism field action, thereby the inner eddy current that produces of alloy melt reaches heatingOr the effect of fusing, in smelting furnace 1 wall, be provided with flame retardant coating 11, wherein flame retardant coating 11 is made up of refractory material,Refractory material generally selects AZS brick, corundum brick, directly in conjunction with magnesite-chrome brick, silicon carbide brick and silicon nitride bonded siliconSilicon carbide brick etc., electromagnetic generator is arranged in flame retardant coating 11, can reduce smelting furnace 1 overall volume andInstalling space.
The alloy that brass alloys are made up of copper and zinc, according to copper shared proportion difference in alloy, brassAlloy is divided into again the brass alloys of the trades mark such as H62, H65, H68, H70, H85, H90, at brass alloysIn fusion process, its fusing point of zinc only has 419.6 DEG C, and boiling point also only has 907 DEG C, with respect to 1084 DEG C of fine copper fusing pointsVery low, thereby zinc element can seethe with excitement and evaporate in high melt and insulating process, and can be at airMiddle oxidation, this is common flame phenomenon.
In smelting furnace of the prior art, in brass alloys fusion process, can cause the temperature of alloy melt notEvenly, thereby make the flame phenomenon of alloy melt also inhomogeneous, the alloy melt flame phenomenon play that temperature is highStrong, alloy melt flame phenomenon that temperature is low is faint or without flame phenomenon; In addition, in actual production, byAll adopt artificial bulk to add in zinc element, and manually stir, therefore cause zinc element at alloy meltIn skewness, thereby caused the inhomogeneous of flame phenomenon; The inhomogeneous meeting of flame phenomenon makes technologyPersonnel cannot accurately control flame degree and the number of times of alloy melt, Jin Erwu in brass alloys fusion processMethod is accurately controlled the pouring temperature of alloy melt, and in addition, the skewness of zinc element in alloy melt alsoCan produce gross segregation phenomenon, reduce the quality of ingot casting, last, artificial stirring also can increase workman's workIntensity.
In order to solve above technical problem, the brass alloys smelting apparatus in the present invention specifically comprises following three kindsEmbodiment:
Embodiment mono-,
As shown in Figure 1, electromagnetic generator comprises that the first electromagnetic generator 21, the first electromagnetic generators 21 installIn smelting furnace 1 bottom, the first electromagnetic generator 21 can produce alternating magnetic field in the situation that of energising, owing to closingGold melt has electric conductivity, and therefore alloy melt will be subject to Lorentz force F, and the expression formula of Lorentz force F is:
In formula:Be Hamiltonian, B is magnetic induction intensity, μmFor magnetic conductivity.
Because alternating magnetic field can produce different magnetic induction intensity, the Lorentz therefore producing in alloy meltPower F is also inhomogeneous, can produce barometric gradient P, barometric gradient thus between the diverse location in alloy meltThe expression formula of P is:
P＝B2/2μmFormula (2)
Alloy melt, under the effect of barometric gradient P, is understood the convection current on generation of forced vertical direction, and alloy is moltenThe expression formula of the maximum fluidity speed of body is:
In formula: B0Represent magnetic induction intensity, R is smelting furnace internal diameter, the frequency that ω is electromagnetic generator, σFor alloy melt electrical conductivity, f is constant, and ρ is alloy melt density.
Can find out to formula (3) according to formula (1), Lorentz force F and barometric gradient P are larger, closeThe flowing velocity of gold melt is larger, and Lorentz force F and barometric gradient P are less, the flowing velocity of alloy meltLess, Lorentz force F and barometric gradient P that therefore technical staff can be subject to by adjusting alloy melt, changeThe flowing velocity that becomes alloy melt vertical direction, the convection current of the vertical direction of alloy melt has following benefit: 1,Make, between alloy melt that alloy melt that surface temperature in smelting furnace 1 is low and bottom temp are high, heat occursAmount is transmitted, thereby has reduced the thermograde of alloy melt, impels flame phenomenon even; 2, make alloy meltInner oxidizing slag and gas rise to the surface, thereby play the effect of degasification slagging-off; 3, make the zinc element can be equalBe distributed in alloy melt evenly, reduce the gross segregation degree of ingot casting.
Embodiment bis-,
As shown in Figure 2, electromagnetic generator comprises that the second electromagnetic generator 22, the second electromagnetic generators 22 installAt smelting furnace 1 sidepiece, when the second electromagnetic generator 22 is switched on, extremely public according to the formula in embodiment mono-(1)Formula (3) is known, the convection current that the second electromagnetic generator 22 can make alloy melt produce horizontal direction, alloy meltThe convection current of horizontal direction there is following benefit: 1, make the alloy that the interior centre of smelting furnace 1 temperature is low moltenBetween the high alloy melt of body and both sides temperature, there is heat transmission, thereby reduced the temperature ladder of alloy meltDegree, impels flame phenomenon even; 2, zinc element can be evenly distributed in alloy melt, reduce ingot castingGross segregation degree.
Embodiment tri-,
As shown in Figure 3, electromagnetic generator comprises the first electromagnetic generator 21 and the second electromagnetic generator 22, theOne electromagnetic generator 21 is arranged on smelting furnace 1 bottom, and the second electromagnetic generator 22 is arranged on smelting furnace 1 sidepiece,The magnetic induction intensity of the first electromagnetic generator 21 and the second electromagnetic generator 22 intercouples, and makes alloy meltFlow and can be vertically flow with horizontal direction, compare embodiment mono-and embodiment bis-, the present embodimentMiddle alloy melt has following benefit at vertical direction and horizontal direction mobile: 1, can make in smelting furnace 1The low alloy melt of temperature and the high alloy melt of temperature between there is heat transmission, the interior center of smelting furnace 1Between the high alloy melt of the alloy melt that position temperature is low and both sides temperature, there is heat transmission, alloy meltThermograde reduce more remarkable effect, flame phenomenon is more even, can more accurately control pouring temperature; 2,Zinc element can be evenly distributed in alloy melt more, further reduce the gross segregation degree of ingot casting;3, further make the oxidizing slag of alloy melt inside and gas rise to the surface, the better effects if of degasification slagging-off, obtainsThe quality of the ingot casting obtaining is higher.
The size of the smelting furnace 1 according to the present invention, installs 4 independently the first electricity in the bottom of smelting furnace 1Magnetic flux generator 21, the sidepiece of smelting furnace 1 is installed second electromagnetic generator 22, certainly of the present invention itsIn he embodiment, technical staff can be according to the stream of the actual size of smelting furnace and the alloy melt that will reachMove effect, the first electromagnetic generator and second electromagnetic generator of respective numbers is set, say no longer in detail at thisBright.
In order can effectively to dispel the heat to flame retardant coating 11, the brass alloys smelting apparatus in the present invention also wrapsDraw together circulating water pond 4, on circulating water pond 4, be connected with water inlet pipe 41 and outlet pipe 42, water inlet pipe 41 and going outWater pipe 42 is communicated with flame retardant coating 11, the cold water in circulating water pond 4 in outlet pipe 42 flows into flame retardant coating 11,And absorb the heat in flame retardant coating 11, in water inlet pipe 41 returns to circulating water pond 4, due to circulating water pond4 are positioned at below earth's surface, and the water therefore flowing back in circulating water pond 4 can be by heat diffusion to earth's surface, to realizeThe effect of cooling, the circulating water pond 4 in the present invention has feature simple in structure, low cost of manufacture.
The invention allows for a kind of brass alloys method of smelting, specifically comprise the following steps: first, calculateRequired raw-material weight while going out brass alloys melting, raw material comprise brass alloys foundry returns, fine copper and pureZinc, then adds brass alloys foundry returns, fine copper and composite covering agent and in smelting furnace, forms alloy melt,And alloy melt is heated to molten state, and subsequently pure zinc is joined in smelting furnace several times, pass through electromagnetismGenerator alloy melt applies electromagnetic distu, finally, in the time that the temperature in smelting furnace reaches tapping temperature, opensHorizontal continuous-casting begins to carry out.
Brass alloys smelting apparatus in preferred embodiment three when brass alloys melting in the present invention, with melting 1Ton brass alloys are example, and raw material comprise 490 kilograms of fine copper, 210 kilograms, pure zinc, brass alloys foundry returns300 kilograms, fine copper, brass alloys foundry returns and composite covering agent are added in commercial frequency cored induction furnace, multipleClosing coverture can be the glass that adds some alkaline matters, and its effect is to avoid alloy melt ingress of air to send outRaw oxidation, then power-on, the coil of the first electromagnetic generator coil 21 plays the heating of alloy melt and protectsThe effect of temperature smelting metal, is heated to 1100 DEG C of fusings by brass alloys, after brass alloys melt completely, and willPure zinc is a small amount of joining in brass alloys melt repeatedly, then opens the second electromagnetic generator 22, the second electricityThe frequency of magnetic flux generator 22 is 3Hz～50Hz, and known according to formula (3), the frequency of electromagnetic generator is largeLittlely be directly proportional to the flowing velocity of alloy melt, therefore in the time that the frequency of electromagnetic generator is greater than 50Hz, electromagnetismThe kelvin effect of field makes it be limited in alloy melt surface part, thereby alloy melt inner flow velocity is increasedAdd, splash and be oxidized, flame homogenising degree is bad, in the time that frequency is less than 3Hz, and alloy meltMobile not obvious, can not effectively promote homogenization of composition. Therefore in order to ensure alloy melt fusion processMiddle flame phenomenon is even, and the frequency of the second electromagnetic generator 22 is 3Hz～50Hz, such as 3Hz, 10Hz,20Hz, 25Hz, 30Hz, 40Hz, 50Hz etc., in order to make the first electromagnetic generator coil 21 rightAlloy melt plays good heating and thermal insulation effect and electromagnetic distu, the first electromagnetic generator line in the present inventionThe frequency of circle 21 is adjusted into 50Hz power frequency, and now alloy melt produces the convection current of vertical direction and horizontal direction,Taking the size of the smelting furnace 1 in the present invention and brass alloys as example, R=0.4m, ω=50Hz,σ＝15×106S/m，f＝0.15，ρ＝6700kg/m3, can obtain according to formula (3): the maximum of alloy meltSpeed is 340mm/s, now can find alloy melt exist obviously rock, flame phenomenon is even, institute surveyAlloy melt internal temperature gradient △ T=5～10 DEG C of amount, temperature gradient reduces greatly. Work as alloy meltFlowing velocity during lower than 340mm/s, although alloy melt also can shake, shaking degree subtractsLittle, make the zinc element that the adds distribution effect in alloy melt poor.
In addition, the first electromagnetic generator coil 21 in the present invention and the second electromagnetic generator 22 applyMagnetic induction intensity be 5mT～20mT, preferably adopt 10mT, now electromagnetic generator is to smelting furnace 1The electromagnetic distu effect producing is best, in the time that magnetic induction intensity is greater than 20mT, according to formula (1) and formula(2) known, Lorentz force F and barometric gradient P that alloy melt is subject to are larger, alloy melt flow moreAdd acutely, alloy melt can splash and oxidative phenomena, and in the time that magnetic induction intensity is less than 5mT, alloy is moltenBody is difficult for producing mobile, and zinc element cannot be evenly distributed in alloy melt, and flame homogenising degree is low, andTemperature gradient increases, and when the magnetic induction intensity in the present invention is 10mT, flame phenomenon is more even, zinc unitThe distribution of element in alloy melt is also more even, and the ingot quality and the performance that obtain are better.
In the time that the smelting temperature of alloy melt reaches tapping temperature, start to carry out horizontal continuous-casting process. WaterOpen in flat continuous casting process prior art, no longer describe the tapping temperature in the present invention in detail at thisBe 1060 DEG C, the now overheated 100 DEG C of left and right of alloy melt, the continuous casting tissue under this temperature T is good, without grandSee defect. Casting temperature all there will be casting flaw during above and below 1060 DEG C, even occur locking andPhenomenon of rupture.
The brass alloys ingot casting obtaining by the brass alloys method of smelting in the present invention carries out composition and dividesAnalyse, find that the brass alloys ingot casting gross segregation degree casting out obviously reduces, gas content reduces 8%, oxygenChange slag content and reduce 10%, the quality and performance of ingot casting is better.
In order further to improve the flow effect of alloy melt, also can come by the power that regulates electromagnetic generatorThe flowing velocity of adjusting alloy melt, the adjusting of the power of electromagnetic generator is relevant with the quality of melt, alloyThe quality of melt is larger, and the power of electromagnetic generator is larger, and the quality of alloy melt is less, electromagnetic generatorPower less. In the time that electromagnetic generator power is larger, the mobile Shaoxing opera of alloy melt is strong, and alloy more easily occursMelt splash phenomena, violent the flowing of alloy melt also can be destroyed the protection of composite covering agent, makes alloy meltOxidation. But when electromagnetic generator power more hour, the flowing velocity of alloy melt is little, even can not produceRaw flowing, causes flame homogenising degree to improve not obvious. Therefore in the time of actual production, technical staff can rootThe quality of border alloy melt regulates the power of electromagnetic generator factually, makes the flame of alloy melt more even,No longer describe in detail at this.
The above be only the specific embodiment of the present invention, but protection scope of the present invention is not limited toThis, be familiar with this those skilled in the art and should be understood that and the present invention includes but to be not limited to accompanying drawing and upper mask body realExecute the content of describing in mode. Any amendment that does not depart from function and structure principle of the present invention all will be included inIn the scope of claims.
Claims (10)
1. a brass alloys smelting apparatus, is characterized in that, comprises smelting furnace and is arranged on smelting furnaceElectromagnetic generator, described electromagnetic generator is for smelting furnace is applied to electromagnetic distu, and the alloy in smelting furnace is moltenBody is generation of forced convection current under the effect of electromagnetic distu.
2. brass alloys smelting apparatus according to claim 1, is characterized in that, described electromagnetism occursDevice comprises the first electromagnetic generator and the second electromagnetic generator, and described the first electromagnetic generator is arranged on smelting furnaceBottom, so that the alloy melt in smelting furnace produces the convection current of vertical direction, described the second electromagnetic generator is establishedPut at smelting furnace sidepiece, so that the alloy melt in smelting furnace produces the convection current of horizontal direction.
3. brass alloys smelting apparatus according to claim 1, is characterized in that, described melting furnace wallFor being provided with flame retardant coating, described electromagnetic generator is arranged in flame retardant coating.
4. brass alloys smelting apparatus according to claim 3, is characterized in that, described brass alloysSmelting apparatus also comprises circulating water pond, and described circulating water is connected with water inlet pipe and outlet pipe on pond, described inWater inlet pipe and outlet pipe are communicated with flame retardant coating.
5. a brass alloys method of smelting, comprises smelting furnace and is arranged on the electromagnetic generator on smelting furnace,Described electromagnetic generator is for applying electromagnetic distu to smelting furnace, and the alloy melt in smelting furnace is at electromagnetic distuEffect under generation of forced convection current, it is characterized in that, described brass alloys method of smelting comprises the following steps:First, required raw-material weight while calculating brass alloys melting, raw material comprise brass alloys foundry returns,Fine copper and pure zinc, then add brass alloys foundry returns, fine copper and composite covering agent in smelting furnace and form and closeGold melt, and alloy melt is heated to molten state, subsequently pure zinc is joined in smelting furnace several times,Apply electromagnetic distu by electromagnetic generator alloy melt, finally when the temperature in smelting furnace reaches furnace temperatureWhile spending, start to carry out horizontal continuous-casting.
6. brass alloys method of smelting according to claim 5, is characterized in that, described electromagnetism occursDevice comprises the first electromagnetic generator and the second electromagnetic generator, and described the first electromagnetic generator is arranged on smelting furnaceBottom, so that the alloy melt in smelting furnace produces the convection current of vertical direction, described the second electromagnetic generator is establishedPut at smelting furnace sidepiece, so that the alloy melt in smelting furnace produces the convection current of horizontal direction.
7. brass alloys method of smelting according to claim 6, is characterized in that, described the first electromagnetismThe magnetic induction intensity that generator and the second electromagnetic generator apply is 5mT～20mT.
8. brass alloys method of smelting according to claim 6, is characterized in that, described the first electromagnetismThe frequency of generator is 50Hz.
9. brass alloys method of smelting according to claim 6, is characterized in that, described the second electromagnetismThe frequency range of generator is 3Hz～50Hz.
10. according to the brass alloys method of smelting one of claim 5 to 9 Suo Shu, it is characterized in that, described inTapping temperature is 1060 DEG C.
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| JP2020152928A (en) * | 2017-11-15 | 2020-09-24 | Ｊｘ金属株式会社 | CORROSION-RESISTANT CuZn ALLOY |
| CN113172364A (en) * | 2021-04-22 | 2021-07-27 | 苏州海力金属粉体材料有限公司 | Novel vacuum melting lead-free solder preparation device |
| US20230313340A1 (en) * | 2022-04-05 | 2023-10-05 | Doggone Investment Co. LLC | Apparatus and method for production of high purity copper-based alloys |
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