CN101934363B - Lower-pressure casting type high-pressure solidification molding system by using magnesium alloy hub electromagnetic pump - Google Patents
Lower-pressure casting type high-pressure solidification molding system by using magnesium alloy hub electromagnetic pump Download PDFInfo
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- CN101934363B CN101934363B CN2010102739819A CN201010273981A CN101934363B CN 101934363 B CN101934363 B CN 101934363B CN 2010102739819 A CN2010102739819 A CN 2010102739819A CN 201010273981 A CN201010273981 A CN 201010273981A CN 101934363 B CN101934363 B CN 101934363B
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Abstract
The invention discloses a lower-pressure casting type high-pressure solidification molding system by using a magnesium alloy hub electromagnetic pump, which comprises a magnesium alloy electromagnetic pump heat preserving furnace, wherein a cylindrical melting crucible provided with a feeding opening at the top end of the front part is installed in the cavity of the heat preserving finance, and the feeding opening is matched with a furnace cap and a gas protection device; a line-frequency induction heating assembly is sleeved on the cylindrical body of the melting crucible through a first heat preserving cotton layer, and a magnesium alloy electromagnetic pump which is used for stably casting molten magnesium alloy is installed at the rear end of the melting crucible through a horizontal pipe; the magnesium alloy electromagnetic pump is communicated with a hub lower-pressure casting machine used for high-pressure solidification casting through a discharge pipe; and a first heating heat-preserving structure is installed on the inner peripheral wall of the heat preserving furnace, and the horizontal pipe, the magnesium alloy electromagnetic pump and the discharge pipe are all provided with second heating heat preserving structures. In the lower-pressure casting type high-pressure solidification molding system by using the magnesium alloy hub electromagnetic pump, the electromagnetic pump is used for casting, the furnace cap does not need sealing, therefore, material feeding is convenient, and moreover, the material outlet and the liquid rising pipe of the electromagnetic pump are always filled with liquid metal, therefore, the liquid rising pipe can not be blocked and the requirement of long-time continuous production can be ensured.
Description
Technical field
The present invention relates to a kind of magnesium alloy hub high-pressure molding device; Relate in particular to magnesium alloy hub when filling type and solidifying, adopt different pressure patterns reach magnesium alloy hub fine and close completely with high performance, and can avoid magnesium alloy hub to be easy to generate the magnesium alloy hub high-pressure molding device of misrun under the low pressure or easy hot tearing.Specifically magnesium alloy hub electromagnetic pump low pressure is filled type high pressure coagulation forming system.
Background technology
At present; Magnesium alloy hub does not also have the moulding process that a cover is fit to fully both at home and abroad; What the low-pressure casting process that generally adopts was continued to use is conventional aluminum alloy process for low pressure casting and forming, mainly being configured to of this technology and equipment: main frame and be generally the compositions such as operating platform, clasp mould mechanism, hydraulic control system, mold cooling system, low pressure holding furnace, electrical apparatus control system, Liquid Level Pressure device of four-column type.Operating procedure is: molten metal liquid is poured into through charge door in the holding furnace that can seal, the holding furnace seal cover is closed.When beginning to produce mould is shared through clasp mould mechanism; The Liquid Level Pressure system pressurizes to metal bath surface through using dry gas; Molten metal gets into mold cavity through stalk according to technological requirement, thereby and under≤0.1Mpa pressure solidification and crystallization obtain complete wheel hub casts.This kind technology is owing to need pressurize to holding furnace inner metal liquid body, so holding furnace must seal, therefore, production can not be carried out continuously.Especially to the material of this easy oxidation of magnesium alloy, protect more difficult.Production is relatively more suitable to aluminium alloy wheel hub, but concerning magnesium alloy hub is produced, because each feeding in raw material all is easy to generate the oxidation of molten metal, is mingled with thereby in alloy, form, and the cleaning of holding furnace is also very difficult.So this technology is unaccommodated to producing magnesium alloy hub in batches.
Summary of the invention
Technical problem to be solved by this invention is to above-mentioned prior art present situation; Provide a kind of mold filling process of casting steadily and can precisely control; Compactness was good after wheel hub solidified; Bell need not sealing, and convenient feeding, can avoid the oxidation of molten metal and the magnesium alloy hub electromagnetic pump low pressure of line clogging to fill type high pressure coagulation forming system.
The present invention solves the problems of the technologies described above the technical scheme that is adopted: magnesium alloy hub electromagnetic pump low pressure is filled type high pressure coagulation forming system; Comprise magnesium alloy electromagnetic pump holding furnace in order to fusing and supply magnesium alloy molten metal; Wherein: be fitted with the cylindrical fusion crucible that an anterior top is shaped on charge door in the inner chamber of holding furnace; And charge door is equipped with bell and gas shield device; The cylindrical stack shell of said fusion crucible is set with the line-frequency induction heating component through the first heat-preservation cotton layer; And the rear end of fusion crucible is fitted with in order to the magnesium alloy molten metal is steadily filled the magnesium alloy electromagnetic pump of type through horizontal tube; Said magnesium alloy electromagnetic pump is communicated with through discharge nozzle and is used for the wheel hub air injection machine that high pressure solidifies casting mold, and said holding furnace internal perisporium is equipped with the first heat tracing structure, and horizontal tube, magnesium alloy electromagnetic pump and discharge nozzle all are equipped with the second heat tracing structure.
For optimizing technique scheme, the concrete measure of taking also comprises:
Above-mentioned wheel hub air injection machine comprises stake body and is fitted in dynamic model mechanism, counterdie platform, the left and right sides side form in the stake body and is fitted in the stalk on the counterdie platform; Said stalk is connected with the magnesium alloy electromagnetic pump discharge nozzle, and the stalk bottom is equipped with wheel hub and solidifies quick pressurization system.
Above-mentioned line-frequency induction heating component comprises line-frequency induction coil and yoke; Said yoke be provided in the line-frequency induction coil the left and right side and above.
Above-mentioned fusion crucible is fitted with two groups of line-frequency induction heating components, and is provided with dividing plate between two groups.
The first above-mentioned heat tracing structure comprises the adiabator layer and first calandria, and the first heat tracing structure is provided in the holding furnace internal perisporium of fusion crucible front end, and said first calandria is installed in the interior week of adiabator layer.
The second above-mentioned heat tracing structure comprises second calandria and the second heat-preservation cotton layer; Said second calandria is installed in the interior week of the second heat-preservation cotton layer.
Above-mentioned horizontal tube is fitted in the fusion crucible rear end, highly locates apart from fusion crucible bottom 1/3rd.
Above-mentioned holding furnace level is installed on the base of furnace body, and the base of furnace body rear portion is equipped with the support of paying that is used to support magnesium alloy electromagnetic pump.
Compared with prior art; Be fitted with an anterior top in the inner chamber of holding furnace of the present invention and be shaped on the cylindrical fusion crucible of charge door; And charge door is equipped with bell and gas shield device; The cylindrical stack shell of said fusion crucible is set with the line-frequency induction heating component through the first heat-preservation cotton layer; And the rear end of fusion crucible is fitted with in order to the magnesium alloy molten metal is steadily filled the magnesium alloy electromagnetic pump of type through horizontal tube; Said magnesium alloy electromagnetic pump is communicated with through discharge nozzle and is used for the wheel hub air injection machine that high pressure solidifies casting mold, and said holding furnace internal perisporium is equipped with the first heat tracing structure, and horizontal tube, magnesium alloy electromagnetic pump and discharge nozzle all are equipped with the second heat tracing structure.The present invention adopts magnesium alloy electromagnetic pump to combine with the magnesium alloy holding furnace; And match with the low pressure casting framework platform; Fill type through magnesium alloy electromagnetic pump; Cavity filling process is steady and avoided holding furnace to need the problem of airtight pressurization at every turn, has realized the reinforced continuity and the gas shield of magnesium alloy liquation.Adopt hydraulic pressure high pressure quick pressurization system during casting solidification, guaranteed the compactness after magnesium alloy hub solidifies.Magnesium alloy electromagnetic pump can guarantee to remain in the stalk magnesium molten metal and be full of state, has avoided owing to the liquid enrichment of the stalk sidewall magnesium alloy oxide inclusion that causes of fluctuating up and down, thereby has caused stopping up stalk.The quantity-produced requirement of magnesium alloy hub has been satisfied in this invention fully, and can produce the magnesium alloy hub foundry goods of complete densification.
Description of drawings
Fig. 1 is an embodiment of the invention overall structure assembling cross-sectional schematic;
Fig. 2 is the structural representation of wheel hub air injection machine among Fig. 1;
Fig. 3 is the assembling cross-sectional schematic of magnesium alloy holding furnace among Fig. 1.
The specific embodiment
Below in conjunction with accompanying drawing embodiments of the invention are described in further detail.
Shown in Figure 1 is structural representation of the present invention.
Reference numeral wherein is: holding furnace 1, base of furnace body 11, pay support 12, adiabator layer 21, first calandria 22, the second heat-preservation cotton layer 31, second calandria 32, line-frequency induction coil 41, yoke 42, dividing plate 43, the first heat-preservation cotton layer 44, fusion crucible 5, bell 51, horizontal tube 52, magnesium alloy electromagnetic pump 6, discharge nozzle 61, quick pressurization system 7, stalk 8, stake body 91, dynamic model mechanism 92, counterdie platform 93, left and right sides side form 94.
Extremely shown in Figure 3 like Fig. 1; Magnesium alloy hub electromagnetic pump low pressure of the present invention is filled type high pressure coagulation forming system; Comprise magnesium alloy electromagnetic pump holding furnace 1 in order to fusing and supply magnesium alloy molten metal; Wherein: be fitted with the cylindrical fusion crucible 5 that an anterior top is shaped on charge door in the inner chamber of holding furnace 1; And charge door is equipped with bell 51 and gas shield device; The cylindrical stack shell of fusion crucible is set with the line-frequency induction heating component through the first heat-preservation cotton layer 44, and the rear end of fusion crucible 5 is fitted with in order to the magnesium alloy molten metal is steadily filled the magnesium alloy electromagnetic pump 6 of type through horizontal tube 52, and said magnesium alloy electromagnetic pump 6 is communicated with through discharge nozzle 61 and is used for the wheel hub air injection machine that high pressure solidifies casting mold; Said holding furnace internal perisporium is equipped with the first heat tracing structure, and horizontal tube 52, magnesium alloy electromagnetic pump 6 and discharge nozzle 61 all are equipped with the second heat tracing structure.Fusion crucible 5 is shaped on single charge door; The heating surface (area) (HS of its cylindrical stack shell increases relatively; The line-frequency induction heating component is installed also succinct more, convenient; Have desirable heat tracing effect, adopt magnesium alloy electromagnetic pump 6 can control the discharge of magnesium alloy melt easily, thereby can realize that the magnesium alloy molten metal steadily fills type.Reaching holding furnace 1 through magnesium alloy electromagnetic pump 6 joined with direct couplet of wheel hub air injection machine; Not only make holding furnace 1 not need to seal again; The reinforced continuity and the gas shield of magnesium alloy liquation have been realized; And realize the protection of magnesium alloy liquid and the removing that is mingled with easily, and can when the magnesium metal liquid gets into the wheel hub air injection machine, not produce and excessively wash away and turbulent flow, cause the defective that the molten metal oxidation is serious and the inner bits content of foundry goods increases.Magnesium alloy electromagnetic pump 6 can guarantee to remain in the pipeline molten metal and be full of state, therefore can not cause the accumulation of burning cortex, and cause the obstruction of pipeline.
Among the embodiment, the wheel hub air injection machine comprises stake body 91 and is fitted in dynamic model mechanism 92, counterdie platform 93, the left and right sides side form 94 in the stake body and is fitted in the stalk 8 on the counterdie platform; Stalk 8 is connected with magnesium alloy electromagnetic pump discharge nozzle 61, and stalk 8 bottoms are equipped with wheel hub and solidify quick pressurization system 7.When adopting quick pressurization system 7 casting solidifications, can guarantee the compactness after magnesium alloy hub solidifies.
The line-frequency induction heating component comprises line-frequency induction coil 41 and yoke 42; The and arranged on left and right sides face that yoke 42 is provided in line-frequency induction coil 41 with and top.Line-frequency induction coil 41 matches with yoke 42 and fusion crucible 5, will add magnesium ingot fusing in the fusion crucible 5.Line-frequency induction heating component of the present invention is shaped on two groups, and is provided with dividing plate 43 between two groups.
Among the embodiment, the first heat tracing structure comprises the adiabator layer 21 and first calandria 22, and the first heat tracing structure is provided in the holding furnace internal perisporium of fusion crucible front end, and first calandria 22 is installed in the interior week of adiabator layer 21.The said second heat tracing structure comprises second calandria 32 and the second heat-preservation cotton layer 31; Said second calandria 32 is installed in the interior week of the second heat-preservation cotton layer 31.
The equipped position of the best of horizontal tube 52 of the present invention is mounted in fusion crucible 5 rear ends, highly locates apart from fusion crucible 5 bottoms 1/3rd.
Among the embodiment, holding furnace 1 level is installed on the base of furnace body 11, and the base of furnace body rear portion is equipped with pair support 12 that is used to support magnesium alloy electromagnetic pump 6.
The present invention is behind the counterdie platform 93 and the mould matched moulds on dynamic model mechanism 92 and the side form 94 that are contained on the wheel hub air injection machine, and liquid metal magnesium is entering air injection machine stalk 8 under electromagnetic pump 6 drives, and under programme-control, is full of die cavity; At this moment quick pressurization system 7 starts; Give the pressurization of stalk 8 inner metal liquids, make magnesium alloy hub solidification and crystallization under high pressure, wait foundry goods to solidify fully after; Moulds open on the air injection machine; Foundry goods upwards rises with patrix, and ejecting mechanism will be taken turns hub casts and ejected during to certain altitude, accomplish a casting process.Because molten metal drives lower charging type at electromagnetic pump 6, filling velocity can require steadily to fill type according to foundry goods, can not cause foundry goods volume gas.Simultaneously, after casting process finished, magnesium metal liquid drove down at electromagnetic pump and can not flow back in the holding furnace, and the liquid magnesium alloy that has guaranteed the stalk inwall can oxidation and cause the stalk obstruction.Wheel hub has avoided magnesium alloy hub to be easy to generate the problem of hot tearing owing under high pressure solidify.
Operation principle of the present invention is: after 41 energisings of line-frequency induction coil, line-frequency induction coil 41 produces heated fusion crucible 5 in fusion crucible 5, and simultaneously, first calandria 22 of energising is also with heating in the fusion crucible 5 one end furnace chambers.Meanwhile, second calandria 32 of energising is with discharge nozzle 61, horizontal tube 52 heating.When temperature reaches the magnesium alloy fusion temperature; Just can control magnesium alloy melt pressure size through the size of current of control magnesium alloy electromagnetic pump 6; Thereby reach the purpose of steadily filling type; The magnesium alloy melt gets in the mold cavities through air injection machine stalk 8, is installed in pressure charging system 7 pressurization and magnesium alloy hub charging aperture places fast on the stalk simultaneously, makes wheel hub solidification and crystallization under high pressure.
Most preferred embodiment of the present invention is illustrated, and various variations or the remodeling made by those of ordinary skills can not depart from the scope of the present invention.
Claims (5)
1. magnesium alloy hub electromagnetic pump low pressure is filled type high pressure coagulation forming system; Comprise magnesium alloy electromagnetic pump holding furnace (1) in order to fusing and supply magnesium alloy molten metal; It is characterized in that: be fitted with the cylindrical fusion crucible (5) that an anterior top is shaped on charge door in the inner chamber of described holding furnace (1); And charge door is equipped with bell (51) and gas shield device; The cylindrical stack shell of said fusion crucible is set with the line-frequency induction heating component through the first heat-preservation cotton layer (44); And the rear end of fusion crucible is fitted with in order to the magnesium alloy molten metal is steadily filled the magnesium alloy electromagnetic pump (6) of type through horizontal tube (52); Said magnesium alloy electromagnetic pump (6) is communicated with through discharge nozzle (61) and is used for the wheel hub air injection machine that high pressure solidifies casting mold, and said holding furnace internal perisporium is equipped with the first heat tracing structure, and horizontal tube (52), magnesium alloy electromagnetic pump (6) and discharge nozzle (61) all are equipped with the second heat tracing structure; Described line-frequency induction heating component comprises line-frequency induction coil (41) and yoke (42); Said yoke (42) be provided in line-frequency induction coil (41) the left and right side and above; Described fusion crucible is fitted with two groups of line-frequency induction heating components, and is provided with dividing plate (43) between two groups; Described wheel hub air injection machine comprises stake body (91) and is fitted in dynamic model mechanism (92), counterdie platform (93), the left and right sides side form (94) in the stake body and is fitted in the stalk (8) on the counterdie platform; Said stalk (8) is connected with magnesium alloy electromagnetic pump discharge nozzle (61), and stalk (8) bottom is equipped with wheel hub and solidifies quick pressurization system (7).
2. magnesium alloy hub electromagnetic pump low pressure according to claim 1 is filled type high pressure coagulation forming system; It is characterized in that: the described first heat tracing structure comprises adiabator layer (21) and first calandria (22); And the first heat tracing structure is provided in the holding furnace internal perisporium of fusion crucible front end, and said first calandria (22) is installed in the interior week of adiabator layer (21).
3. magnesium alloy hub electromagnetic pump low pressure according to claim 2 is filled type high pressure coagulation forming system, it is characterized in that: the described second heat tracing structure comprises second calandria (32) and the second heat-preservation cotton layer (31); Said second calandria (32) is installed in the interior week of the second heat-preservation cotton layer (31).
4. magnesium alloy hub electromagnetic pump low pressure according to claim 3 is filled type high pressure coagulation forming system, it is characterized in that: described horizontal tube (52) is fitted in fusion crucible (5) rear end, highly locates apart from fusion crucible (5) bottom 1/3rd.
5. magnesium alloy hub electromagnetic pump low pressure according to claim 4 is filled type high pressure coagulation forming system; It is characterized in that: described holding furnace (1) level is installed on the base of furnace body (11), and the base of furnace body rear portion is equipped with pair support (12) that is used to support magnesium alloy electromagnetic pump (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102739819A CN101934363B (en) | 2010-09-02 | 2010-09-02 | Lower-pressure casting type high-pressure solidification molding system by using magnesium alloy hub electromagnetic pump |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010102739819A CN101934363B (en) | 2010-09-02 | 2010-09-02 | Lower-pressure casting type high-pressure solidification molding system by using magnesium alloy hub electromagnetic pump |
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| CN101934363A CN101934363A (en) | 2011-01-05 |
| CN101934363B true CN101934363B (en) | 2012-11-21 |
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| CN2010102739819A Expired - Fee Related CN101934363B (en) | 2010-09-02 | 2010-09-02 | Lower-pressure casting type high-pressure solidification molding system by using magnesium alloy hub electromagnetic pump |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| DE102011110176B4 (en) * | 2011-08-12 | 2013-06-06 | Heinrich G. Baumgartner | Die casting machine and die casting process |
| CN103157779A (en) * | 2011-12-08 | 2013-06-19 | 牟彦任 | High pressure metal smelting and processing |
| CN104148610B (en) * | 2014-05-24 | 2017-04-05 | 浙江精一重工有限公司 | A kind of metalwork manufacture method and the low pressure casting forging press for realizing the method |
| CN104607635B (en) * | 2015-02-06 | 2018-08-24 | 东至县文元瓷砖加工厂 | A kind of calcium metal briquetting device |
| CN105689687A (en) * | 2016-03-01 | 2016-06-22 | 刘加兴 | High-pressure and low-pressure casting process and equipment for aluminum alloy casting products |
| CN106077558B (en) * | 2016-06-20 | 2018-07-13 | 中北大学 | A kind of method and system of aluminium alloy semi-solid extrusion casint |
| CN108405827B (en) * | 2018-04-08 | 2019-11-01 | 仝仲盛 | The preparation process of automobile magnesium alloy hub |
| CN110202120A (en) * | 2019-07-15 | 2019-09-06 | 上海交通大学 | A kind of overturning orientation cooling casting formation system and its application method |
| CN111889651A (en) * | 2020-07-02 | 2020-11-06 | 蚌埠正峰电子科技有限公司 | High-low pressure fixing and forming system of electromagnetic pump |
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