CN105033217A - Continuous casting method - Google Patents
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- CN105033217A CN105033217A CN201510557185.0A CN201510557185A CN105033217A CN 105033217 A CN105033217 A CN 105033217A CN 201510557185 A CN201510557185 A CN 201510557185A CN 105033217 A CN105033217 A CN 105033217A
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Abstract
The invention discloses a continuous casting method; a cooling device is used for directly cooling a leading rod or a continuous casting blank formed by condensing molten metal; through an effect of heat transfer, the molten metal is continuously condensed at the condensation front end of the continuous casting blank in a casting through hole; and a traction device continuously pulls the continuous casting blank to always keep the condensation front end into the casting through hole so as to form a stable continuous casting procedure. The molten metal is condensed in the continuous casting through hole under the heat transfer effect of the leading rod or the metal condensed beforehand, is not condensed in such large cooling devices as a crystallizer, so that the whole occupation space of the continuous casting device can be reduced.
Description
Technical field
The present invention relates to casting technology field, be specifically related to a kind of continuous cast method.
Background technology
Ingot casting is the molding mode of ingot blank molten metal being cast shape, size, composition and satisfactory quality.In recent years, cast metals technology improves constantly, and new method, new technology continue to bring out, and especially continuous casting technology constantly obtains progress and development.Continuous casting is a kind of high efficiency method being different from common fixed die ingot casting method, be characterized in metal while solidify, ingot casting is while to casting direction constantly movement, the strand of indefinite length can be prepared in theory, realize continuous prodution, current most metal ingot blank all adopts continuous casting technology to obtain.
In order to ensure mating of casting speed and intensity of cooling in continuous casting process, continuous casting methods all at present all needs to be realized by crystallizer.In ingot casting process, melt flows into crystallizer and fills crystallisation by cooling after type from furnace chamber, and the metal solidified is hauled out with haulage gear, and melt then supplements in time, thus realizes continuous casting.
Owing to using crystallizer, in order to make the metal release (being separated with crystallizer) of solidifying, the mode of usual employing mold oscillation, namely whole casting process " draws-stops-La " or the rhythm of " drawing-stop-counter-La of pushing away " carries out, to the control of traction electric machine and the power requirement of motor higher, and easily produce oscillation mark, affect cc billet surface quality.
In addition, crystalliser volume is huge, shared erection space is generally hundreds of times of ingot casting sectional area, cause taking up room of whole casting apparatus large, when multiple crystallizer is arranged side by side and forms many continuous casting line bases, cause because crystalliser volume is huge the quantity of the line base drawn in identical space few, ingot casting efficiency is reduced; Two is that the internal watercourses of crystallizer is comparatively complicated, its cool cycles water route is in the higher and very narrow space of temperature, therefore very easily incrustation scale is produced, the generation of incrustation scale has a strong impact on heat-transfer effect, casting process and ingot quality are had a negative impact, seriously also can block water route, cause casting accident.
Summary of the invention
Therefore, the technical problem to be solved in the present invention is also the defect overcoming the cc billet surface quality difference that continuous casing of the prior art obtains, thus provides the continuous casing that a kind of cc billet surface quality is good.
The embodiment of the present invention provides a kind of continuous cast method, comprises the following steps:
The continuous casting through hole be positioned on the sidewall of molten bath is used refractory material blocking;
In molten bath, inject molten metal, make molten metal higher than continuous casting through hole;
To draw bar is placed on draw-gear, uses to draw bar and disclose out refractory material in continuous casting through hole after aiming at continuous casting through hole, makes to draw bar and enters in continuous casting through hole;
Opening cooling device, cooling drawing bar, make the molten metal being positioned at continuous casting through hole draw the front end cooled and solidified of bar;
Start draw-gear, make to draw bar and drive the metal solidified gradually away from molten bath;
Adopt cooling device to cool the metal previously solidified in the outside in molten bath, the molten metal making to be positioned at continuous casting through hole solidify in the front end of the metal previously solidified and under effect at draw-gear with the metal previously solidified together away from molten bath.
Continuous casing of the present invention, described molten metal is aluminum alloy melt.
Continuous casing of the present invention, in described molten bath, aluminum alloy melt liquid level remains at the distance higher than continuous casting through hole horizontal center line 10-30mm.
Continuous casing of the present invention, in described molten bath, the temperature of aluminum alloy melt is 670-720 DEG C.
Continuous casing of the present invention, described cooling device is water jet, and in described water jet, the flow of water is 2-0L/min, and water temperature is 30 ± 5 DEG C.
Continuous casing of the present invention, adopts vertical mode of spraying by the cool water shower in water jet to drawing on bar or the aluminium alloy that previously solidified.
Continuous casing of the present invention, the distance spraying the opening part outside the distance between center line continuous casting through hole molten bath in the region at the cooling water place of drawing on bar or the aluminium alloy that previously solidified is 100-150mm.
Continuous casing of the present invention, draw-gear draws bar or the speed of service of aluminium alloy of having solidified is 1150-1900mm/min.
Continuous casing of the present invention, the diameter of described continuous casting through hole is 1-2mm, for casting the aluminium alloy wire that diameter is 7-10mm.
Technical solution of the present invention, tool has the following advantages:
1. continuous cast method of the present invention, cooling device is utilized directly to cool the continuous casting billet while carrying out (continuous casting is stable) drawing bar (when continuous casting just starts) or molten metal and solidify formation, pass through heat transfer effect, molten metal is constantly solidified at the front end place of solidifying casting continuous casting billet in through hole, do not stop pull continuous casting billet by draw-gear again, make to solidify front end to remain in casting through hole, form stable continuous casting working procedure.Molten metal is by drawing bar or the heat transfer effect of metal that previously solidified and solidifying in continuous casting through hole, instead of solidify in the cooling device that crystallizer etc. is large-scale, thus the space that casting apparatus entirety takies can be reduced, and it is same owing to there is no the large-scale plants such as crystallizer, therefore can be set up in parallel many continuous casting billets, many continuous casting billets can be positioned as close to setting, time in identical space, more continuous casting line can be set, improve casting efficiency.Further, as long as the cooling effect of cooling device is constant, draw-gear just at the uniform velocity can pull and draw bar and strand, thus makes casting billet surface bright and clean, and blemish greatly reduces, and reduces the pressure of the step of sequent surface process.
2. continuous cast method of the present invention, described continuous casting through hole is positioned at the side in described molten bath, form horizontal casting, the continuous casting billet of horizontal casting does not need deformation occurs in casting process, and during crystallization the orientation of growth of crystal grain based on axis, improve the axial deformation ability of strand, improve the comprehensive mechanical property of metal after rolling in post-order process and stretcher strain process.
Accompanying drawing explanation
In order to be illustrated more clearly in the specific embodiment of the invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in detailed description of the invention or description of the prior art below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The structural representation of casting apparatus of Fig. 1 for providing in the first embodiment of the present invention;
Description of reference numerals:
1-molten bath; 2-continuous casting through hole; 3-plugging plate; 4-cooling device; 5-draws bar; 6-support wheel; 7-draw-gear; 71-traction wheel; 8-molten metal.
Detailed description of the invention
Be clearly and completely described technical scheme of the present invention below in conjunction with accompanying drawing, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
In addition, if below in the described different embodiment of the present invention involved technical characteristic do not form conflict each other and just can be combined with each other.
Embodiment 1
The present embodiment provides a kind of casting apparatus, as shown in Figure 1, comprising:
Molten bath 1, for storing molten metal 8, has continuous casting through hole 2;
Draw bar 5, can extend into hermetically in continuous casting through hole 2, run from described continuous casting through hole 2 to the outside in molten bath 1 for guiding the metal solidified in continuous casting through hole 2 when continuous casting starts;
Cooling device 4, for to drawing bar 5 or the metal that solidified cools, and to draw on bar 5 or the metal that solidified cooled and solidified further by drawing molten metal that bar or the heat transfer effect of metal that solidified make to be positioned at described continuous casting through hole 2 described;
Draw-gear 7, draws bar 5 or the metal that solidified away from molten bath 1 for drawing.
The casting apparatus of the present embodiment, when continuous casting has just started to carry out, has needed use to draw bar 5 to seal continuous casting through hole 2, flows out in continuous casting through hole 2 to prevent molten metal, and, draw the reserved space, one end that the front end of bar 5 and continuous casting through hole 2 are positioned at molten bath 1, molten metal is filled in this space, after cooling device 4 is opened, cool drawing bar 5, draw bar 5 and be subject to the reduction of cooling effect temperature, and also reduce because heat transfer effect draws the end region temperature that bar 5 is positioned at continuous casting through hole 2, temperature is crossed cold formation and is solidified front end, molten metal 8 is solidifying front end cooled and solidified, because of metal after solidifying conducts heat and temperature reduction forms new front end of solidifying, molten metal constantly solidifies, finally define the continuous casting billet that longitudinal section is identical with continuous casting through hole 2, bar 5 is drawn gradually away from continuous casting through hole 2 under the drive of draw-gear 7, making to solidify front end remains in continuous casting through hole 2, and drive the metal solidified gradually away from continuous casting through hole 2, after drawing bar 5 and having departed from the sphere of action of cooling device 4, cooling device 4 cools the metal after solidifying with regard to direct, when continuous casting billet runs to draw-gear 7, draw-gear 7 just directly drives continuous casting billet to run, now just no longer need to draw bar 5, draw bar 5 to take off from casting apparatus.
The casting apparatus of the present embodiment, molten metal is by drawing bar 5 or the heat transfer effect of metal that previously solidified and solidifying in continuous casting through hole 2, do not need to arrange the large-scale cooling device such as crystallizer, thus the space that casting apparatus entirety takies can be reduced, and same owing to there is no the large-scale plants such as crystallizer, therefore can be set up in parallel many continuous casting billets, many continuous casting billet can be positioned as close to setting, time in identical space, more continuous casting line can be set, improve casting efficiency.Further, as long as the cooling effect of cooling device 4 is identical, draw-gear 7 just at the uniform velocity can pull and draw bar 4 and strand, thus makes casting billet surface bright and clean, and blemish greatly reduces, and reduces the pressure of the step of sequent surface process.
Drawing bar 5 can be aluminium alloy, copper alloy etc., is preferably the metal or alloy identical or close with molten metal 8 material composition.
As improvement, described molten bath 1 is provided with opening, described opening part is provided with has continuous casting through hole 2 and the plugging plate 3 of opening described in shutoff.
Because continuous casting through hole 2 place is the region that molten metal 8 solidifies, there is thermograde herein, and be the final position that molten metal 8 flows, by the effect that temperature and molten metal flow, the refractory corrosion speed of continuous casting through hole 2 and peripheral regions thereof is very fast, hold flimsy position most in whole molten bath 1, therefore, arrange separately plugging plate 3, the decay resistance of the refractory material that plugging plate 3 uses is higher than the refractory material in other region in molten bath 1, improve the life-span of molten bath 1 entirety, reducing the construction costs.Continuous casting through hole 2 and plugging plate 3 are easily changed when seriously corroded, ensures production safety.
As preferred embodiment, described plugging plate 3 is made up of asbestos board or graphite cake or micarex.Also can be that other refractory material is made.Preferred asbestos board and micarex, asbestos board and micarex not only have high temperature corrosion-resisting performance, but also have adiabatic ability, prevent molten bath 1 inner metal liquid thermal loss too fast.The thickness of plugging plate 3 between 8mm-15mm, to ensure that there is enough thickness and heat insulation capacity.
As preferred embodiment, described continuous casting through hole 2 has multiple, is arranged on abreast on described plugging plate 3.
The number of described continuous casting through hole 2 can be arranged according to actual conditions, as 5,10,20 etc.Each continuous casting through hole 2 just can form a continuous casting line, arranges multiple continuous casting through hole 2, just can form many continuous casting lines simultaneously, greatly improve casting efficiency, and owing to not needing to arrange the devices such as crystallizer, greatly reduces the space of solidifying part and taking.Make the distance between continuous casting line can arrange as far as possible close, time in identical space, more continuous casting line can be set, improve casting efficiency.
As preferred embodiment, between described draw-gear 7 and molten bath 1, be also provided with support wheel 6, for supporting the position of metal between described draw-gear 7 and molten bath 1 of drawing bar 5 or having solidified.
By arranging support wheel 6, supporting the position of metal between described draw-gear 7 and molten bath 1 of drawing bar 5 or having solidified, preventing from drawing bar 5 and continuous casting billet bends, ensure to draw bar 5 and the straight operation of continuous casting billet.
As preferred embodiment, described cooling device 4 is water jet, and cooling water is directly ejected into and draws on bar 5 or the metal that solidified by described water jet.
As the distortion of cooling device 4, also annular conduit can be used, around firmly drawing bar 5 or the metal that solidified to cool it.In addition, also can use other cooling agent, even use when needs are cold by force liquid gas to carry out strong cold control.
As preferred embodiment, the top of the radial direction of metal of drawing bar 5 described in described water jet is positioned at or having solidified.
Be sprayed onto under the water that water jet sprays is subject to the jet power of nozzle and the effect of gravity and draw above continuous casting billet that bar 5 or the metal that solidified formed, reduce the blowing force needed for nozzle.
Also can arrange tank in the below of water jet, collect the water that water jet flows out, the cooling water after collection can again pass in water jet after cold filtration, realizes making full use of of water resource.
As preferred embodiment, described continuous casting through hole 2 is positioned at the side in described molten bath 1, described in draw bar 5 and be horizontally disposed with, the metal solidified being guided to run from described continuous casting through hole 2 to the outside in molten bath 1 along horizontal direction.
Described continuous casting through hole 2 is positioned at the side in described molten bath 1, form horizontal casting, the continuous casting billet of horizontal casting does not need deformation occurs in casting process, and during crystallization the orientation of growth of crystal grain based on axis, improve the axial deformation ability of strand, improve the comprehensive mechanical property of metal after rolling in post-order process and stretcher strain process.
Described continuous casting through hole 2 is positioned at the end face in described molten bath 1, forms top-guiding type continuous casting mode.Continuous casting through hole 2 is also positioned at the bottom surface in described molten bath 1.
As preferred embodiment, described continuous casting through hole 2 is circular, and diameter is 2-20mm, can be such as 2mm, 5mm, 10mm, 15mm, 18mm, 20mm, and continuous casting forms line base.Certain continuous casting through hole 2 also can be other shape, as square, oval etc.The aperture 5%-10% larger than the diameter of the longitudinal section of drawing bar 1 usually of continuous casting through hole 2, between 0.2mm to 2mm.
As preferred embodiment, described draw-gear, comprises
Traction wheel 71, is arranged side by side in pairs;
Drive unit (not shown), drives described traction wheel 71 to rotate;
Described bar 5 or the metal that solidified of drawing successively by between often pair of traction wheel 71, away from molten bath 1 under the drive of the rotational motion of traction wheel 71.
By the continuous casting billet that traction wheel 71 pulls the metal solidified to be formed, making to solidify front end remains in continuous casting through hole 2, form continuous seepage cast metal, traction wheel 71 pairs of continuous casting billets of paired setting form clamping, not only pulling force can be provided, continuous casting billet can also be prevented to be out of shape, straightening function is played to the shape of continuous casting billet.
The quantity of traction wheel 71, can be arranged according to actual conditions, can be 1 to, 2 to, 4 to etc.
As the mode of texturing of draw-gear, draw-gear can also be roller, drives continuous casting billet to run by rotating roller, or directly arranges the curling continuous casting billet drive of disk.
As further improvement, the casting apparatus of the present embodiment, also comprises crimping device, for carrying out curling to the continuous casting billet solidifying formation through draw-gear 7.By arranging crimping device, crimp operation is carried out to linear continuous casting billet, can the metal wire of production overlength.
Embodiment 2
The present embodiment provides a kind of continuous cast method, comprises the following steps:
S1: use refractory material to block the continuous casting through hole 2 be positioned on the sidewall of molten bath 1;
S2: inject molten metal in molten bath 1, makes molten metal higher than continuous casting through hole 2;
S3: will draw bar 5 and be placed on draw-gear 7, uses after aiming at continuous casting through hole 2 and draws bar 5 and disclose out refractory material in continuous casting through hole 2, make to draw bar 5 and enter in continuous casting through hole 2;
S4: open cooling device 4, cool drawing bar 5, the molten metal being positioned at continuous casting through hole 2 is made to draw the front end cooled and solidified (only molten metal is drawing the front end cooled and solidified of bar 5 when continuous casting just starts, and molten metal then carries out having solidified on the metal previously solidified afterwards) of bar 5;
S5: start draw-gear 7, make to draw bar 5 and drive the metal solidified gradually away from molten bath 1;
S6: adopt cooling device 4 in the outside in molten bath 1, the metal previously solidified is cooled, the molten metal being positioned at continuous casting through hole 2 is solidified in the front end of the metal previously solidified and under the effect of draw-gear 7 with the metal previously solidified together away from molten bath 1.
The continuous cast method of the present embodiment, under the cooling effect of cooling device 4, molten metal is by drawing bar 5 or the heat transfer effect of metal that previously solidified and solidifying in continuous casting through hole 2, do not need to arrange the large-scale cooling device such as crystallizer, the space that the casting apparatus entirety that thus can reduce continuous cast method takies, and it is same owing to there is no the large-scale plants such as crystallizer, therefore many continuous casting billets can be set up in parallel, many continuous casting billet can be positioned as close to setting, time in identical space, more continuous casting line can be set, improve casting efficiency.Further, as long as the cooling effect of cooling device 4 is identical, draw-gear 7 just at the uniform velocity can pull and draw bar 4 and strand, and strand does not produce oscillation mark, thus makes casting billet surface bright and clean, blemish greatly reduces, and reduces the pressure of the step of sequent surface process.
The continuous cast method of the present embodiment, is applicable to the casting of the metal such as aluminium, copper and alloy.
For different metal materials and alloying component, cooling effect and hauling speed are matched, ensure carrying out smoothly of continuous casting.
The technical scheme of the present embodiment is the core technology scheme of method of the present invention, main thought of its design is to utilize cooling water directly to cool the continuous casting billet while carrying out (continuous casting is stable) drawing bar 5 (when continuous casting just starts) or molten metal and solidify formation, pass through heat transfer effect, molten metal is constantly solidified at the front end place of solidifying casting continuous casting billet in through hole 2, do not stop pull continuous casting billet by draw-gear again, make to solidify front end to remain in casting through hole 2, form stable continuous casting working procedure.Under above-mentioned core concept, those skilled in the art can according to actual conditions, and as molten metal composition, amount of molten metal etc., come rationally must configure cooling effect, hauling speed etc. realize the continuous casting of different metal.
The continuous cast method of the present embodiment, molten metal is by drawing bar 5 or the heat transfer effect of metal that previously solidified and solidifying in continuous casting through hole 2, instead of solidify in the cooling device that crystallizer etc. is large-scale, thus the space that casting apparatus entirety takies can be reduced, and same owing to there is no the large-scale plants such as crystallizer, therefore can be set up in parallel many continuous casting billets, many continuous casting billet can be positioned as close to setting, time in identical space, more continuous casting line can be set, improve casting efficiency.Further, as long as the cooling effect of cooling device 4 is identical, draw-gear 7 just at the uniform velocity can pull and draw bar 4 and strand, thus makes casting billet surface bright and clean, and blemish greatly reduces, and reduces the pressure of the step of sequent surface process.
Embodiment 3
The present embodiment specifically provides a kind of continuous cast method of aluminum alloy melt, comprises the following steps:
S1: use refractory material to block the continuous casting through hole 2 be positioned on the sidewall of molten bath 1;
S2: inject aluminum alloy melt in molten bath 1, make aluminum alloy melt higher than the distance of the horizontal center line 10mm of continuous casting through hole 2, and the aluminum alloy melt in subsequent step in molten bath 1 will keep this distance, make the temperature of aluminum alloy melt in molten bath 1 remain on 670 DEG C;
S3: will draw bar 5 and be placed on draw-gear 7, uses after aiming at continuous casting through hole 2 and draws bar 5 and disclose out refractory material in continuous casting through hole 2, make to draw bar 5 and enter in continuous casting through hole 2;
S4: open cooling device 4, cool drawing bar 5, the molten metal being positioned at continuous casting through hole 2 is made to draw the front end cooled and solidified of bar 5, described cooling device 4 is water jet, water jet adopts vertical mode of spraying by the cool water shower in water jet to drawing on bar 5 or the aluminium alloy that previously solidified, in described water jet, the flow of water is 1.2L/min, water temperature is 30 ± 5 DEG C, and the distance of the opening part that water jet sprays outside distance between center line continuous casting through hole 2 molten bath 1 in the region at the cooling water place of drawing on bar 5 or the aluminium alloy that previously solidified is 100mm;
S5: start draw-gear 7, making to draw bar 5 drives the aluminium alloy solidified gradually away from molten bath 1, the speed of service that draw-gear 7 draws bar 5 is 1150mm/min, draw to take off after bar 5 leaves draw-gear 7 and draw bar 5, the continuous casting billet that formed of rear towing device 7 aluminium alloy that directly traction has been solidified.
S6: adopt cooling device 4 in the outside in molten bath 1, the aluminium alloy previously solidified is cooled, the molten metal being positioned at continuous casting through hole 2 is solidified in the front end of the aluminium alloy previously solidified and under the effect of draw-gear 7 with the aluminium alloy previously solidified together away from molten bath 1.
Embodiment 4
The present embodiment specifically provides a kind of continuous cast method of aluminum alloy melt, comprises the following steps:
S1: use refractory material to block the continuous casting through hole 2 be positioned on the sidewall of molten bath 1;
S2: inject aluminum alloy melt in molten bath 1, make aluminum alloy melt higher than the distance of the horizontal center line 20mm of continuous casting through hole 2, and the aluminum alloy melt in subsequent step in molten bath 1 will keep this distance, make the temperature of aluminum alloy melt in molten bath 1 remain on 700 DEG C;
S3: will draw bar 5 and be placed on draw-gear 7, uses after aiming at continuous casting through hole 2 and draws bar 5 and disclose out refractory material in continuous casting through hole 2, make to draw bar 5 and enter in continuous casting through hole 2;
S4: open cooling device 4, cool drawing bar 5, the molten metal being positioned at continuous casting through hole 2 is made to draw the front end cooled and solidified of bar 5, described cooling device 4 is water jet, water jet adopts vertical mode of spraying by the cool water shower in water jet to drawing on bar 5 or the aluminium alloy that previously solidified, in described water jet, the flow of water is 1.6L/min, water temperature is 30 ± 5 DEG C, and the distance of the opening part that water jet sprays outside distance between center line continuous casting through hole 2 molten bath 1 in the region at the cooling water place of drawing on bar 5 or the aluminium alloy that previously solidified is 120mm;
S5: start draw-gear 7, making to draw bar 5 drives the aluminium alloy solidified gradually away from molten bath 1, the speed of service that draw-gear 7 draws bar 5 is 1500mm/min, draw to take off after bar 5 leaves draw-gear 7 and draw bar 5, the continuous casting billet that formed of rear towing device 7 aluminium alloy that directly traction has been solidified.
S6: adopt cooling device 4 in the outside in molten bath 1, the aluminium alloy previously solidified is cooled, the molten metal being positioned at continuous casting through hole 2 is solidified in the front end of the aluminium alloy previously solidified and under the effect of draw-gear 7 with the aluminium alloy previously solidified together away from molten bath 1.
Embodiment 5
The present embodiment specifically provides a kind of continuous cast method of aluminum alloy melt, comprises the following steps:
S1: use refractory material to block the continuous casting through hole 2 be positioned on the sidewall of molten bath 1;
S2: inject aluminum alloy melt in molten bath 1, make aluminum alloy melt higher than the distance of the horizontal center line 30mm of continuous casting through hole 2, and the aluminum alloy melt in subsequent step in molten bath 1 will keep this distance, make the temperature of aluminum alloy melt in molten bath 1 remain on 720 DEG C;
S3: will draw bar 5 and be placed on draw-gear 7, uses after aiming at continuous casting through hole 2 and draws bar 5 and disclose out refractory material in continuous casting through hole 2, make to draw bar 5 and enter in continuous casting through hole 2;
S4: open cooling device 4, cool drawing bar 5, the molten metal being positioned at continuous casting through hole 2 is made to draw the front end cooled and solidified of bar 5, described cooling device 4 is water jet, water jet adopts vertical mode of spraying by the cool water shower in water jet to drawing on bar 5 or the aluminium alloy that previously solidified, in described water jet, the flow of water is 2.0L/min, water temperature is 30 ± 5 DEG C, and the distance of the opening part that water jet sprays outside distance between center line continuous casting through hole 2 molten bath 1 in the region at the cooling water place of drawing on bar 5 or the aluminium alloy that previously solidified is 150mm;
S5: start draw-gear 7, making to draw bar 5 drives the aluminium alloy solidified gradually away from molten bath 1, the speed of service that draw-gear 7 draws bar 5 is 1900mm/min, draw to take off after bar 5 leaves draw-gear 7 and draw bar 5, the continuous casting billet that formed of rear towing device 7 aluminium alloy that directly traction has been solidified.
S6: adopt cooling device 4 in the outside in molten bath 1, the aluminium alloy previously solidified is cooled, the molten metal being positioned at continuous casting through hole 2 is solidified in the front end of the aluminium alloy previously solidified and under the effect of draw-gear 7 with the aluminium alloy previously solidified together away from molten bath 1.
The diameter that embodiment 3-5 is used for the described cast through holes 2 of cast aluminum-molykote composite material magnesium alloy (GB/T3190-1996) is respectively 7.1mm, 8.6mm, 10.2mm, and being respectively used to casting diameter is the aluminium alloy wire of 7mm, 8.5mm, 10mm.The diameter of casting hole is than the directly large 1-2mm of the continuous casting billet finally obtained.
In whole continuous cast method process, need to keep the height of the molten metal in molten bath 1 substantially constant, to keep the pressure in cast through holes 2 constant.
Described continuous casting through hole 2 in embodiment 3-5 is positioned at the side in described molten bath 1, form horizontal casting, the continuous casting billet of horizontal casting does not need deformation occurs in casting process, and during crystallization the orientation of growth of crystal grain based on axis, improve the axial deformation ability of strand, improve the comprehensive mechanical property of metal after rolling in post-order process and stretcher strain process.
Obviously, above-described embodiment is only for clearly example being described, and the restriction not to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all embodiments.And thus the apparent change of extending out or variation be still among the protection domain of the invention.
Claims (9)
1. a continuous cast method, is characterized in that, comprises the following steps:
The continuous casting through hole (2) that will be positioned on molten bath (1) sidewall uses refractory material blocking;
In molten bath (1), inject molten metal, make molten metal higher than continuous casting through hole (2);
To draw bar (5) is placed on draw-gear (7), aim at continuous casting through hole (2) to use afterwards and draw bar (5) and disclose out refractory material in continuous casting through hole (2), make to draw bar (5) and enter in continuous casting through hole (2);
Opening cooling device (4), cooling drawing bar (5), make the molten metal being positioned at continuous casting through hole (2) in the front end cooled and solidified of drawing bar (5);
Start draw-gear (7), make to draw bar (5) and drive the metal solidified gradually away from molten bath (1);
Adopt cooling device (4) in the outside of molten bath (1), the metal previously solidified is cooled, the molten metal being positioned at continuous casting through hole (2) is solidified in the front end of the metal previously solidified and under the effect of draw-gear (7) with the metal previously solidified together away from molten bath (1).
2. continuous casing according to claim 1, is characterized in that, described molten metal is aluminum alloy melt.
3. continuous casing according to claim 2, is characterized in that, described molten bath (1) interior aluminum alloy melt liquid level remains at the distance higher than continuous casting through hole (2) horizontal center line 10-30mm.
4. the continuous casing according to Claims 2 or 3, is characterized in that, the temperature of described molten bath (1) interior aluminum alloy melt is 670-720 DEG C.
5. the continuous casing according to any one of claim 2-4, is characterized in that, described cooling device (4) is water jet, and in described water jet, the flow of water is 1.2-2.0L/min, and water temperature is 30 ± 5 DEG C.
6. continuous casing according to claim 5, is characterized in that, adopts vertical mode of spraying by the cool water shower in water jet to drawing on bar (5) or the aluminium alloy that previously solidified.
7. continuous casing according to claim 6, it is characterized in that, the distance spraying distance between center line continuous casting through hole (2) molten bath (1) opening part outward in the region at the cooling water place of drawing on bar (5) or the aluminium alloy that previously solidified is 100-150mm.
8. the continuous casing according to any one of claim 2-7, is characterized in that, draw-gear (7) draws bar (5) or the speed of service of aluminium alloy of having solidified is 1150-1900mm/min.
9. the continuous casing according to any one of claim 2-8, is characterized in that, the diameter of described continuous casting through hole (2) is 7.1-10.2mm, for casting the aluminium alloy wire that diameter is 7-10mm.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105855524A (en) * | 2016-05-27 | 2016-08-17 | 安徽鑫佳铜业有限公司 | Cast copper cooling waste heat reutilization device |
| CN105855493A (en) * | 2016-04-29 | 2016-08-17 | 马鞍山尚元冶金科技有限公司 | Using method of digital crystallizer-free specially-shaped blank continuous casting device |
| CN112139465A (en) * | 2020-09-04 | 2020-12-29 | 东北大学 | Continuous casting device and working method for aluminum alloy and composite plate strip blank thereof |
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| JPH11750A (en) * | 1997-06-10 | 1999-01-06 | Motojiro Honpo | Manufacture of copper shape memory alloy |
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| GB1499809A (en) * | 1975-01-24 | 1978-02-01 | Bicc Ltd | Method of and apparatus for continuously forming metal ro |
| SU954165A1 (en) * | 1980-10-17 | 1982-08-30 | Институт проблем литья АН УССР | Apparatus for automatic control of blank extraction process in metal continuous casting horisontal machine |
| CN86203074U (en) * | 1986-06-30 | 1986-12-17 | 机械工业部上海电缆研究所 | Continually casting crystallizer operated by a drawing-up method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105855493A (en) * | 2016-04-29 | 2016-08-17 | 马鞍山尚元冶金科技有限公司 | Using method of digital crystallizer-free specially-shaped blank continuous casting device |
| CN105855524A (en) * | 2016-05-27 | 2016-08-17 | 安徽鑫佳铜业有限公司 | Cast copper cooling waste heat reutilization device |
| CN112139465A (en) * | 2020-09-04 | 2020-12-29 | 东北大学 | Continuous casting device and working method for aluminum alloy and composite plate strip blank thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105033217B (en) | 2017-08-04 |
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Effective date of registration: 20200108 Address after: 335003 industrial no.5-1022, high tech Industrial Development Zone, Yingtan City, Jiangxi Province Patentee after: Yingtan airidi new materials Co., Ltd Address before: 335000 Longgang Development Zone, hi tech Industrial Park, Jiangxi, Yingtan Patentee before: JIANGXI KEMING COPPER INDUSTRY CO., LTD. |