CN1443614A - Costing method for continuously heating casting liguor in pouring process - Google Patents
Costing method for continuously heating casting liguor in pouring process Download PDFInfo
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- CN1443614A CN1443614A CN 02107046 CN02107046A CN1443614A CN 1443614 A CN1443614 A CN 1443614A CN 02107046 CN02107046 CN 02107046 CN 02107046 A CN02107046 A CN 02107046A CN 1443614 A CN1443614 A CN 1443614A
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Abstract
The casting method capable of continuously heating casting liquor in the course of pouring process incldues the following steps: a) preparing a pouring device and an induction heating device; b). injecting casting liquor with preset does from pouring head of said pouring device, making said casting liquor flow into its mould through running channel, and heating said casting liquor by utilizing high-frequency electromagnetic wave produced by said induction heating device; c). stopping heating, cooling the casting liquor and forming; and d). removing mould and taking out the formed element from said mould.
Description
Technical field
The present invention is relevant with metal casting method, particularly about a kind of casting method that continues in casting cycle the heating of casting liquid.
Background technology
Known metal casting mode, particularly make the hot investment casting of shell elements, when being cast liquid, melt metal injects by cast gate, and through sprue and flowing in the process of mould, the part that metal casting liquid contacts with sprue wall and mold wall is easy to generate the situation of cooling ahead of time, especially in mould, because the space in the mould very narrow (because being a kind of casting of shell elements), the metal of cooling might stop up this place ahead of time, so that causes and be ready least in the casting processing procedure that the problem-casting that occurs lacks.Do not lack even if produce casting, the crystalline phase of the liquid of the metal of cooling casting is ahead of time organized also and can be changed, and therefore, the material structure of the element that is cast out often has the situation of residual stress or lattice defect to produce.
Known settling mode has the mode with preheated mold to reduce the molten metal problem of cooling ahead of time.Yet, mould after the preheating still has process in time and reduces the phenomenon of temperature, and the temperature after its preheating also can not reach the temperature (temperature of common metal casting liquid is at least more than 800 ℃) that belongs to casting liquid near complete, therefore, this mode also can't be avoided in the process of casting fully, and casting liquid produces the phenomenon of cooling ahead of time.
Summary of the invention
The object of the present invention is to provide a kind of casting method that in casting cycle, continues the heating of casting liquid, can in the process of casting, continue to make it keep certain temperature, to avoid casting liquid cooling ahead of time the heating of the casting liquid in sprue and the mould.
For achieving the above object, a kind of casting method that in casting cycle, continues the heating of casting liquid provided by the present invention, with eddy-current heating casting liquid, to be of the casting nozzle injection of the casting liquid of molten condition by a pouring device, it is flowed in the mould, so that this casting liquid cooling forming after casting is finished is the element of a reservation shape via the sprue of this pouring device;
The present invention is provided with an induction coil in the periphery of this pouring device, by providing a predetermined power to this induction coil, make it to produce frequency electromagnetic waves, directly stimulate the atom of this casting liquid that is positioned at this pouring device, make it produce fierce collision and friction and heat, make this casting liquid remain on a predetermined temperature, in casting cycle, produce the phenomenon of cooling ahead of time to reduce this casting liquid.
The present invention also includes a centrifugal device, in order to rotate this pouring device.
After the casting program is finished, this pouring device is moved apart induction heating apparatus, make this induction heating apparatus stop and this mould is put into cooling fluid cool off the heating of this casting liquid.
Wherein each mould of this pouring device and the distance of central sprue are for equating.
The heater that the present invention adopts produces frequency electromagnetic waves for utilizing induction coil, makes the atom of casting liquid in this frequency electromagnetic waves coverage produce fierce collision and is heated with friction, makes the temperature of casting liquid be increased to a predetermined temperature.Its advantage is and needn't directly contacts and can directly heat it with casting liquid, and when a certain size electrical power was provided, it can keep necessarily the temperature of casting liquid heating, can not cause heating-up temperature to produce bigger variation.
Description of drawings
Below lift a preferred embodiment, conjunction with figs., the present invention is further illustrated.Wherein:
Fig. 1 is preferred embodiment treating apparatus figure of the present invention.
The specific embodiment
See also shown in Figure 1ly, preferred embodiment of the present invention provided continues casting method to the heating of casting liquid in casting cycle, include the following step:
(a) preposition step:
A prefabricated pouring device (10), it has a cast gate (11), is communicated to a sprue (12) under it, is communicated to the mould (13) of predetermined number again.Have a plurality of breather pipes (14) in addition, make the rear end exhaust of this sprue (12).This pouring device (10) is inserted in the induction heating apparatus (20).This induction heating apparatus (20) has a body (21) that is the stove shape, wherein has a room (211), and is arranged with an induction coil (22) in the periphery of this body (21).By above device, this pouring device (10) is inserted in the room (211) of this body (21), and this induction heating apparatus (20) one predetermined power (not shown) are provided, make this induction coil (22) can in the room (211) of this body (21), produce the frequency electromagnetic waves (not shown) of a predetermined power.
(b) water the squama step:
Get one and water tube (30), include the casting liquid (40) of predetermined composition, will cast cast gate (11) injection of liquid (40), make it flow to these moulds (13) via this sprue (12) by this pouring device (10).(or in advance) starts this induction heating apparatus (20) simultaneously, the frequency electromagnetic waves that the induction coil (22) of this induction heating apparatus (20) is produced can make this casting liquid (40), and former giving produces fierce collision and friction and heats, make this casting liquid (40) remain on a predetermined temperature, not can with work casting program carry out and cooling gradually.
(c) cooling forming step:
After this casting liquid (40) fully filled up these moulds (13), special this pouring device (10) took out in this induction heating apparatus (20) certainly, and this induction heating apparatus (20) is stopped casting liquid (40) heating.And this pouring device (10) is positioned over a precalculated position, order casting liquid (40) cooling forming wherein.
(d) form removal step:
After cooling forming finishes, the formed element (not shown) of casting liquid (40) of moulding is taken out from this mould (13).
The present invention is characterized in: in the process of (b) casting step, mode with eddy-current heating, order casting liquid keeps uniform temperature, makes the element after the moulding, can not produce that casting lacks because casting liquid cooling ahead of time in the casting cycle, problems such as residual stress and lattice defect.
And the present invention utilizes eddy-current heating that following reason is arranged:
1. eddy-current heating is directly casting liquid to be heated in non-contacting mode, and heating-up temperature is comparatively stable.
2. induction heating can't influence the carrying out of casting program, and does not need extra most baroque auxiliary body.
3. have only when casting liquid is arranged in the pouring device, this induction heating apparatus just can produce heat effect to it.Therefore, after this pouring device was removed, this induction heating apparatus can stop the effect of heating automatically.This dot characteristics can be avoided because of forgetting heater cutting out, the problem that makes it continue heating and cause danger on the industry security.
In addition, the present invention still has the equivalent way of several supplementary notes, holds and subjoins:
1. in this pouring device (10), these moulds (13) can this cast gate (11) be the center, be equidistant mode with radial and central sprue (12) and arrange, and adjacent mould (13) also is equidistant.After modern casting liquid (40) was injected by cast gate (11), the time that flow to each mould (13) can be consistent with state, makes the quality of formed element in each mould (13) can unanimity.
2. in (c) cooling forming step, coolant reservoirs (as pond or oil sump) such as pouring device (10) can be put into and cool off.
3. in (c) cooling forming step, can select to replace this pouring device (10) is removed, this induction heating apparatus (20) is stopped casting liquid (40) heating with the power supply that cuts off induction heating apparatus (20).
4. this law can also provide a centrifugal device (not shown), in order to rotate this pouring device (10), utilizes this induction heating apparatus (20) to the heating of casting liquid equally, makes this method form a centrifugal casting.
Claims (5)
1, a kind of casting method that in casting cycle, continues the heating of casting liquid, with eddy-current heating casting liquid, to be of the casting nozzle injection of the casting liquid of molten condition by a pouring device, it is flowed in the mould via the sprue of this pouring device, but so that this casting liquid cooling forming after casting is finished is the element of a reservation shape; Its special efficacy is:
In the periphery of this pouring device one induction coil is set, by providing a predetermined power to this induction coil, make it to produce frequency electromagnetic waves, directly stimulate the atom of this casting liquid that is positioned at this pouring device, make it produce fierce collision and friction and heat, make this casting liquid remain on a predetermined temperature, in casting cycle, produce the phenomenon of cooling ahead of time to reduce this casting liquid.
2, casting method according to claim 1 is characterized in that, wherein also includes a centrifugal device, in order to rotate this pouring device.
3, casting method according to claim 1 is characterized in that, wherein after the casting program is finished, this pouring device is moved apart induction heating apparatus, and this induction heating apparatus is stopped this casting liquid heating.
4, casting method according to claim 1 is characterized in that, wherein after the casting program is finished, this mould is put into cooling fluid cool off.
5, casting method according to claim 1 is characterized in that, wherein each mould of this pouring device and the distance of central sprue are for equating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021070466A CN1295050C (en) | 2002-03-11 | 2002-03-11 | Costing method for continuously heating casting liguor in pouring process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021070466A CN1295050C (en) | 2002-03-11 | 2002-03-11 | Costing method for continuously heating casting liguor in pouring process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1443614A true CN1443614A (en) | 2003-09-24 |
| CN1295050C CN1295050C (en) | 2007-01-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021070466A Expired - Fee Related CN1295050C (en) | 2002-03-11 | 2002-03-11 | Costing method for continuously heating casting liguor in pouring process |
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| Country | Link |
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| CN (1) | CN1295050C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102325910A (en) * | 2009-02-24 | 2012-01-18 | 丹尼尔·瓜迪福格罗拉斯 | Be used for reducing method and the system that is used to implement said method of the calking element of casting alloy |
| CN108941497A (en) * | 2018-08-28 | 2018-12-07 | 上海化工研究院有限公司 | The casting device and casting method of miniature turbocompressor multistage turbine rotor |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| UA39902C2 (en) * | 1994-08-08 | 2001-07-16 | Сіменс Акцієнгезельшафт | METHOD AND DEVICE FOR DIRECTED HARDENING OF MELT |
| CN2374290Y (en) * | 1999-05-28 | 2000-04-19 | 广东工业大学 | Appts. for producing stranded monocrystal copper rod by hot continuous casting process |
| CN1165397C (en) * | 2001-03-30 | 2004-09-08 | 广东工业大学 | Conticasting technology and equipment for producing thin-wall metal tube |
-
2002
- 2002-03-11 CN CNB021070466A patent/CN1295050C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102325910A (en) * | 2009-02-24 | 2012-01-18 | 丹尼尔·瓜迪福格罗拉斯 | Be used for reducing method and the system that is used to implement said method of the calking element of casting alloy |
| CN102325910B (en) * | 2009-02-24 | 2014-08-06 | 丹尼尔·瓜迪福格罗拉斯 | Method for reduction of interstitial elements in cast alloys and system for performing said method |
| CN108941497A (en) * | 2018-08-28 | 2018-12-07 | 上海化工研究院有限公司 | The casting device and casting method of miniature turbocompressor multistage turbine rotor |
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| Publication number | Publication date |
|---|---|
| CN1295050C (en) | 2007-01-17 |
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Granted publication date: 20070117 |