CN103878332A - Magnesium alloy thick plate continuous production device and technology - Google Patents
Magnesium alloy thick plate continuous production device and technology Download PDFInfo
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- CN103878332A CN103878332A CN201410112376.1A CN201410112376A CN103878332A CN 103878332 A CN103878332 A CN 103878332A CN 201410112376 A CN201410112376 A CN 201410112376A CN 103878332 A CN103878332 A CN 103878332A
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Abstract
The invention discloses a magnesium alloy thick plate continuous production device and technology. The device includes a middle buffering ladle, a magnesium alloy refining solution feeding pipeline and a first argon conveying pipeline are connected above the middle buffering ladle, a casting pipeline is connected below the middle buffering ladle, an outlet of the casting pipeline penetrates through a crystallizer cover and stretches into an inner cavity of a constant temperature controlling segment of a crystallizer, a plate belt surface anti-corrosion protection segment below a solidification segment of the crystallizer is connected with guiding rollers which are closely arranged, a plate blank cutting and separating device for cast blanks and a cast blank transferring mechanism are arranged below the guiding rollers which are closely arranged, a cutting and collecting device is arranged on the lower portion of the cast blank transferring mechanism, and the cutting and collecting device is connected to a cutting and concentration conveying device. According to the technology, magnesium alloy liquid is transported into the closed combined crystallizer through the pipeline and solidifies while moving downwards, the solidified surface is subjected to anti-corrosion treatment, the magnesium alloy thick plate blanks are continuously pulled out through a supporting and pulling roller, the plate with certain length and width larger than 50 mm is formed through subsequent cutting and separating, and the production efficiency of the magnesium alloy thick plate blanks is improved.
Description
Technical field
The present invention relates to metallurgy industry magnesium alloy thick plate continuous casting field, be specifically related to a kind of magnesium alloy thick plate continuous producing apparatus and technique.
Background technology
Adopt at present the method cast magnesium alloy slab of semicontinuous or die casting both at home and abroad, the relative die casting of D.C.casting technology, although efficiency increases, but D.C.casting can not be produced continuously, to use for reference aluminium alloy D.C.casting technology and derivative technology, it is the ingot mould that magnesium alloy liquation is injected to sealing, ingot mould height is generally between 110～250mm, magnesium alloy liquation solidifies after the thicker base shell of formation in ingot mould, the dummy ingot pallet holder of dependence ingot mould below shutoff magnesium alloy strand and is slowly moved down, the speed that moves down is generally below 0.15m/min, moving down into after certain length, stop injecting liquation in mold, and remove mold, until the slab cooling being shaped after design temperature, strand is slowly raised to top by pallet, utilize traveling crane to walk strand.Because casting process is to be interrupted to carry out, so be D.C.casting technology.In D.C.casting process, active because of magnesium metalline, the gas barrier such as oxygen, steam that contains in air is required higher, mold move back and forth process in just bring much productions danger.Mold heights is little, and magnesium alloy liquation cooling velocity in mold is restricted, and is restricting the raising of casting speed, and then affects the raising of magnesium alloy strand efficiency.
Taking which type of process, promote the production efficiency of magnesium alloy thick plate base, is one of main direction of studying of insider.
Summary of the invention
In order to overcome the shortcoming of above-mentioned prior art, the object of this invention is to provide a kind of magnesium alloy thick plate continuous producing apparatus and technique, can form and be greater than the sheet material that 50mm is thick, promote the production efficiency of magnesium alloy thick plate base.
In order to achieve the above object, the technical scheme that the present invention takes is:
A kind of magnesium alloy thick plate continuous producing apparatus, comprise intermediate buffering bag 3, intermediate buffering bag 3 tops are connected with magnesium alloy refining liquation supply pipeline 1 and the first argon gas conveyance conduit 2, the side-lower of intermediate buffering bag 3 is connected with scarfing cinder pipeline 4, scarfing cinder pipeline 4 is connected with scarfing cinder tank 5, the below of intermediate buffering bag 3 is connected with casting pipeline 7
Crystallizer constant temperature control section 10 tops of the crystallizer section of solidifying 11 tops are provided with mold cover 9, mold cover 9 is connected with the second argon gas conveyance conduit 6 and protection flux delivery pipeline 8, casting pipeline 7 exports through mold cover 9 and extend into crystallizer constant temperature control section 10 inner chambers, the strip surface anticorrosion protection section 12 of the crystallizer section of solidifying 11 belows is connected with solid matter guide roller 13, the slab that the below of solid matter guide roller 13 is provided with strand 14 cuts off separator 15 and strand transfer mechanism 16, strand transfer mechanism 16 is connected with strand ejection transfer device 20, the winding installing port place of strand ejection is provided with strand boom hoisting 21,
A kind of magnesium alloy thick plate continuous production processes, comprises the following steps:
The first step: dummy bar head is delivered to the end opening of the interior desired location shutoff of the crystallizer section of the solidifying 11 crystallizer section of solidifying 11 by solid matter guide roller 13, makes the inner chamber of crystallizer constant temperature control section 10, the crystallizer section of solidifying 11 and dummy bar head form the liquation " containing cup " that a bottom is sealed;
Second step: argon gas is passed into magnesium alloy liquation intermediate buffering bag 3 by the first argon gas conveyance conduit 2, remove the air in empty bag, reduce after the gas of oxygen, nitrogen and reactive magnesium, empty intermediate buffering bag 3 is heated to magnesium alloy liquation and retains temperature, the magnesium alloy liquation that refining stage is obtained is transported to intermediate buffering bag 3 through magnesium alloy refining liquation supply pipeline 1;
The 3rd step: mold cover 9 is combined closely with crystallizer thermostatic control section 10, prevent entering of air above, crystallizer thermostatic control section 10 starts permanent attemperating unit heating, make this section of inwall arrive the casting of magnesium alloy liquation and control temperature, the second argon gas conveyance conduit 6 passes into argon gas, gets rid of the air retaining;
The 4th step: the magnesium alloy liquation in intermediate buffering bag 3 is transported to crystallizer thermostatic control section 10 and the crystallizer section of solidifying 11 inner chambers by casting pipeline 7, fluid level control system by crystallizer thermostatic control section 10 tops is by level control to stable position, protection flux delivery pipeline 8 evenly sprays protection flux to mold liquid level top, increases the lubricant effect of strand and crystallizer inwall;
The 5th step: 11 water flowings of the crystallizer section of solidifying are cooling, make the magnesium alloy liquation and its inwall contact portion cooled and solidified that remain in this section form the base shell with certain tensile strength, it is anticorrosion that the protection gas of opening slab surface anticorrosion protection section 12 carries out steel slab surface, together with magnesium alloy liquation condenses in dummy ingot head contact portion, for the drop-down magnesium alloy solidification slab of dummy ingot provides condition;
The 6th step: start solid matter guide roller 13 and drag the drop-down strand 14 of dummy bar, open the slab cooling system enhancement slab cooling of close packed roller inside simultaneously, in the time that strand arrives dummy ingot and slab separation point position, slab cuts off separator 15 by dummy ingot and slab cutting and separating, put dummy ingot away, after repairing, treat to open next time and water use;
The 7th step: the strand 14 entirely solidifying continues drop-down, while cutting off separator 15 position through strip, according to lower continuous slab scale cutting, strand is transplanted on strand 14 ejection positions by strand transfer mechanism 16, strand 14 is risen to winding installing port by strand ejection transfer device 20, strand boom hoisting 21 rolls off the production line strand 14 lifting, and cutting is cut by cutting gathering-device 17 and sent device 18 to cutting collection, send the position 19 rear reposition of discharge cleaning of rolling off the production line collecting the fast cutting collection that is transplanted on completely time;
The 8th step: the reciprocal second to the 7th step is produced continuously;
The 9th step: in the time stopping watering, the pipeline 7 that stops casting injects magnesium alloy liquation to crystallizer thermostatic control section 10, slows down original magnesium alloy liquation is solidified to pull-out completely, and after completing last block casting base and rolling off the production line, the whole slab direct casting stage finishes.
Through the direct casting of certain hour; the magnesium alloy liquation Impurity deposition of precipitation is below tundish; after reaching a certain height; impurity can enter crystallizer with liquation; at this moment just need to by scarfing cinder pipeline 4, lower floor's impurity be discharged in the scarfing cinder tank 5 of inert gas shielding, to be cooledly solidify rear removing.
The feature of present device and technique has:
1. adopt crystallizer inwall clotting method, increased the parking space of magnesium alloy liquation, strengthened cooling effect.
2. adopt the magnesium alloy liquation injected system of sealing isolation type, avoided the easily intrusion of working substance such as oxygen, nitrogen and steam, ensure casting safety smoothly.
3. adopt sectionally assembled crystallizer, realize respectively the functions such as thermostatic control, cooled and solidified, protective treatment, extend magnesium alloy liquation freezing range length, increase the reliability of direct casting.
4. the magnesium alloy liquation cavity volume of flowing through all has the protection of inert gas, magnesium alloy liquation enters after crystallizer thermostatic control section, upper surface adds protection flux, form one deck liquid protective film at upper surface on the one hand, the gas of strengthening the unfavorable casting such as protection magnesium alloy liquation and oxygen contacts, improve magnesium alloy purity, simultaneously because its fusing point is lower than magnesium alloy, liquation viscosity ratio magnesium alloy liquation is little, proportion is less than magnesium alloy, can be filled in the constringency cleft between magnesium alloy solidification shell and crystallizer inwall, increase the greasy property between crystallizer inwall and strand shell, reduce frictional force, condition is provided for strand is drop-down.
5. mold liquid level helps the control of the desirable liquid level of casting by fluid level control system, and crystallizer liquation stops highly and improves, and helps impurity floating, improves strand castability.
6. the rotating speed control casting speed and the pulling force that adopt solid matter guide roller, cut off the operations such as separator surface trimming, strand handover in conjunction with slab, can form and be greater than the sheet material that 50mm is thick, realizes direct casting, and production efficiency is high, and flexibility is large.
Brief description of the drawings
Accompanying drawing is the structural representation of present device.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in detail.
With reference to accompanying drawing, a kind of magnesium alloy thick plate continuous producing apparatus, comprise intermediate buffering bag 3, intermediate buffering bag 3 tops are connected with magnesium alloy refining liquation supply pipeline 1 and the first argon gas conveyance conduit 2, the side-lower of intermediate buffering bag 3 is connected with scarfing cinder pipeline 4, scarfing cinder pipeline 4 is connected with scarfing cinder tank 5, and the below of intermediate buffering bag 3 is connected with casting pipeline 7
Crystallizer constant temperature control section 10 tops of the crystallizer section of solidifying 11 tops are provided with mold cover 9, mold cover 9 is connected with the second argon gas conveyance conduit 6 and protection flux delivery pipeline 8, casting pipeline 7 exports through mold cover 9 and extend into crystallizer constant temperature control section 10 inner chambers, the strip surface anticorrosion protection section 12 of the crystallizer section of solidifying 11 belows is connected with solid matter guide roller 13, the slab that the below of solid matter guide roller 13 is provided with strand 14 cuts off separator 15 and strand transfer mechanism 16, strand transfer mechanism 16 is connected with strand ejection transfer device 20, the winding installing port place of strand ejection is provided with strand boom hoisting 21,
With reference to accompanying drawing, a kind of magnesium alloy thick plate continuous production processes, comprises the following steps:
The first step: dummy bar head is delivered to the end opening of the interior desired location shutoff of the crystallizer section of the solidifying 11 crystallizer section of solidifying 11 by solid matter guide roller 13, makes the inner chamber of crystallizer constant temperature control section 10, the crystallizer section of solidifying 11 and dummy bar head form the liquation " containing cup " that a bottom is sealed;
Second step: argon gas is passed into magnesium alloy liquation intermediate buffering bag 3 by the first argon gas conveyance conduit 2, remove the air in empty bag, reduce after the gas of oxygen, nitrogen and reactive magnesium, empty intermediate buffering bag 3 is heated to magnesium alloy liquation and retains temperature, the magnesium alloy liquation that refining stage is obtained is transported to intermediate buffering bag 3 through magnesium alloy refining liquation supply pipeline 1;
The 3rd step: mold cover 9 is combined closely with crystallizer thermostatic control section 10, prevent entering of air above, crystallizer thermostatic control section 10 starts permanent attemperating unit heating, make this section of inwall arrive the casting of magnesium alloy liquation and control temperature, the second argon gas conveyance conduit 6 passes into argon gas, gets rid of the air retaining;
The 4th step: the magnesium alloy liquation in intermediate buffering bag 3 is transported to crystallizer thermostatic control section 10 and the crystallizer section of solidifying 11 inner chambers by casting pipeline 7, fluid level control system by crystallizer thermostatic control section 10 tops is by level control to stable position, protection flux delivery pipeline 8 evenly sprays protection flux to mold liquid level top, increases the lubricant effect of strand and crystallizer inwall;
The 5th step: 11 water flowings of the crystallizer section of solidifying are cooling, make the magnesium alloy liquation and its inwall contact portion cooled and solidified that remain in this section form the base shell with certain tensile strength, it is anticorrosion that the protection gas of opening slab surface anticorrosion protection section 12 carries out steel slab surface, together with magnesium alloy liquation condenses in dummy ingot head contact portion, for the drop-down magnesium alloy solidification slab of dummy ingot provides condition;
The 6th step: start solid matter guide roller 13 and drag the drop-down strand 14 of dummy bar, open the slab cooling system enhancement slab cooling of close packed roller inside simultaneously, in the time that strand arrives dummy ingot and slab separation point position, slab cuts off separator 15 by dummy ingot and slab cutting and separating, put dummy ingot away, after repairing, treat to open next time and water use;
The 7th step: the strand 14 entirely solidifying continues drop-down, while cutting off separator 15 position through strip, according to lower continuous slab scale cutting, strand is transplanted on strand 14 ejection positions by strand transfer mechanism 16, strand 14 is risen to winding installing port by strand ejection transfer device 20, strand boom hoisting 21 rolls off the production line strand 14 lifting, and cutting is cut by cutting gathering-device 17 and sent device 18 to cutting collection, send the position 19 rear reposition of discharge cleaning of rolling off the production line collecting the fast cutting collection that is transplanted on completely time;
The 8th step: the reciprocal second to the 7th step is produced continuously;
The 9th step: in the time stopping watering, the pipeline 7 that stops casting injects magnesium alloy liquation to crystallizer thermostatic control section 10, slows down original magnesium alloy liquation is solidified to pull-out completely, and after completing last block casting base and rolling off the production line, the whole slab direct casting stage finishes.
Through the direct casting of certain hour; the magnesium alloy liquation Impurity deposition of precipitation is below tundish; after reaching a certain height; impurity can enter crystallizer with liquation; at this moment just need to by scarfing cinder pipeline 4, lower floor's impurity be discharged in the scarfing cinder tank 5 of inert gas shielding, to be cooledly solidify rear removing.
Claims (3)
1. a magnesium alloy thick plate continuous producing apparatus, comprise intermediate buffering bag 3(), it is characterized in that: intermediate buffering bag (3) top is connected with magnesium alloy refining liquation supply pipeline (1) and the first argon gas conveyance conduit (2), the side-lower of intermediate buffering bag (3) is connected with scarfing cinder pipeline (4), scarfing cinder pipeline (4) is connected with scarfing cinder tank (5), the below of intermediate buffering bag (3) is connected with casting pipeline (7)
Crystallizer constant temperature control section (10) top of the crystallizer section of solidifying (11) top is provided with mold cover (9), mold cover (9) is connected with the second argon gas conveyance conduit (6) and protection flux delivery pipeline (8), casting pipeline (7) outlet extend into crystallizer constant temperature control section (10) inner chamber through mold cover (9), the strip surface anticorrosion protection section (12) of the crystallizer section of solidifying (11) below is connected with solid matter guide roller (13), the slab that the below of solid matter guide roller (13) is provided with strand (14) cuts off separator (15) and strand transfer mechanism (16), strand transfer mechanism (16) is connected with strand ejection transfer device (20), the winding installing port place of strand ejection is provided with strand boom hoisting (21),
Strand transfer mechanism (16) bottom is provided with cutting gathering-device (17), and cutting gathering-device (17) is connected to cutting collection and send device (18) upper, collect and is sent device (18) will cut gathering-device (17) to deliver to cut to collect and send (19) to locate by cutting.
2. the technique of a kind of magnesium alloy thick plate continuous producing apparatus according to claim 1, is characterized in that, comprises the following steps:
The first step: dummy bar head is delivered to the end opening of the crystallizer section of solidifying (11) the interior desired location shutoff crystallizer section of solidifying (11) by solid matter guide roller (13), makes the inner chamber of crystallizer constant temperature control section (10), the crystallizer section of solidifying (11) and dummy bar head form the liquation " containing cup " that a bottom is sealed;
Second step: argon gas is passed into magnesium alloy liquation intermediate buffering bag (3) by the first argon gas conveyance conduit (2), remove the air in empty bag, reduce after the gas of oxygen, nitrogen and reactive magnesium, empty intermediate buffering bag (3) is heated to magnesium alloy liquation and retains temperature, the magnesium alloy liquation that refining stage is obtained is transported to intermediate buffering bag (3) through magnesium alloy refining liquation supply pipeline (1);
The 3rd step: mold cover (9) is combined closely with crystallizer thermostatic control section (10), prevent entering of air above, crystallizer thermostatic control section (10) starts permanent attemperating unit heating, make this section of inwall arrive the casting of magnesium alloy liquation and control temperature, the second argon gas conveyance conduit (6) passes into argon gas, gets rid of the air retaining;
The 4th step: the magnesium alloy liquation in intermediate buffering bag (3) is transported to crystallizer thermostatic control section (10) and the crystallizer section of solidifying (11) inner chamber by casting pipeline (7), fluid level control system by crystallizer thermostatic control section (10) top is by level control to stable position, protection flux delivery pipeline (8) evenly sprays protection flux to mold liquid level top, increases the lubricant effect of strand and crystallizer inwall;
The 5th step: the crystallizer section of solidifying (11) water flowing is cooling, make the magnesium alloy liquation and its inwall contact portion cooled and solidified that remain in this section form the base shell with certain tensile strength, it is anticorrosion that the protection gas of opening slab surface anticorrosion protection section (12) carries out steel slab surface, together with magnesium alloy liquation condenses in dummy ingot head contact portion, for the drop-down magnesium alloy solidification slab of dummy ingot provides condition;
The 6th step: start solid matter guide roller (13) and drag the drop-down strand of dummy bar (14), open the slab cooling system enhancement slab cooling of close packed roller inside simultaneously, in the time that strand arrives dummy ingot and slab separation point position, slab cuts off separator (15) by dummy ingot and slab cutting and separating, put dummy ingot away, after repairing, treat to open next time and water use;
The 7th step: the strand (14) entirely solidifying continues drop-down, while cutting off separator (15) position through strip, according to lower continuous slab scale cutting, strand is transplanted on strand (14) ejection position by strand transfer mechanism (16), strand (14) is risen to winding installing port by strand ejection transfer device (20), strand boom hoisting (21) rolls off the production line strand (14) lifting, cutting is cut by cutting gathering-device (17) and is sent device (18) to cutting collection, send position (19) the rear reposition of discharge cleaning of rolling off the production line collecting the fast cutting collection that is transplanted on completely time;
The 8th step: the reciprocal second to the 7th step is produced continuously;
The 9th step: in the time stopping watering, the pipeline (7) that stops casting injects magnesium alloy liquation to crystallizer thermostatic control section (10), slows down original magnesium alloy liquation is solidified to pull-out completely, and after completing last block casting base and rolling off the production line, the whole slab direct casting stage finishes.
3. the technique of a kind of magnesium alloy thick plate continuous producing apparatus according to claim 2; it is characterized in that: through the direct casting of certain hour; the magnesium alloy liquation Impurity deposition of precipitation is below tundish; after reaching a certain height; impurity can enter crystallizer with liquation; at this moment just need to by scarfing cinder pipeline (4), lower floor's impurity be discharged in the scarfing cinder tank (5) of inert gas shielding, to be cooledly solidify rear removing.
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Cited By (7)
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| CN104874757A (en) * | 2015-06-17 | 2015-09-02 | 内蒙古汇豪镁业有限公司 | Semi-continuous hot-top casting device for magnesium alloy and casting technology of magnesium alloy |
| CN105598399A (en) * | 2016-01-26 | 2016-05-25 | 中国重型机械研究院股份公司 | Production method of ultra-thickness casting blank |
| CN106180601A (en) * | 2016-08-30 | 2016-12-07 | 中国重型机械研究院股份公司 | Coloured light metal plate ingot continuous casting apparatus and casting technique thereof |
| CN106180615A (en) * | 2016-08-29 | 2016-12-07 | 中国重型机械研究院股份公司 | A kind of magnesium alloy strand continuous casting billet is tumbled transfer device |
| CN108262454A (en) * | 2016-12-30 | 2018-07-10 | 天津镁特威科技有限公司 | A kind of useless magnesium retracting device |
| CN113245377A (en) * | 2021-06-23 | 2021-08-13 | 宝钢湛江钢铁有限公司 | Layout structure of sectional type thick plate intermediate cooling process and use method |
| CN113751682A (en) * | 2021-08-12 | 2021-12-07 | 西安鼎鑫科技新材料有限公司 | Casting process and equipment for casting ultrahigh-strength aluminum alloy hub material for vehicle |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104874757A (en) * | 2015-06-17 | 2015-09-02 | 内蒙古汇豪镁业有限公司 | Semi-continuous hot-top casting device for magnesium alloy and casting technology of magnesium alloy |
| CN105598399A (en) * | 2016-01-26 | 2016-05-25 | 中国重型机械研究院股份公司 | Production method of ultra-thickness casting blank |
| CN106180615A (en) * | 2016-08-29 | 2016-12-07 | 中国重型机械研究院股份公司 | A kind of magnesium alloy strand continuous casting billet is tumbled transfer device |
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| CN108262454B (en) * | 2016-12-30 | 2019-10-11 | 天津镁特威科技有限公司 | A kind of useless magnesium recyclable device |
| CN113245377A (en) * | 2021-06-23 | 2021-08-13 | 宝钢湛江钢铁有限公司 | Layout structure of sectional type thick plate intermediate cooling process and use method |
| CN113245377B (en) * | 2021-06-23 | 2022-05-03 | 宝钢湛江钢铁有限公司 | Sectional type thick plate intermediate cooling process layout structure and using method |
| CN113751682A (en) * | 2021-08-12 | 2021-12-07 | 西安鼎鑫科技新材料有限公司 | Casting process and equipment for casting ultrahigh-strength aluminum alloy hub material for vehicle |
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