CN102284696A - Temperature control method of no-riser aluminium-alloy casting mold - Google Patents
Temperature control method of no-riser aluminium-alloy casting mold Download PDFInfo
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- CN102284696A CN102284696A CN201110145710XA CN201110145710A CN102284696A CN 102284696 A CN102284696 A CN 102284696A CN 201110145710X A CN201110145710X A CN 201110145710XA CN 201110145710 A CN201110145710 A CN 201110145710A CN 102284696 A CN102284696 A CN 102284696A
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Abstract
The invention discloses a temperature control method of a no-riser aluminium-alloy casting mold. The temperature control method comprises the following steps of: selecting more than two nodes according to the condition of the appearance size change of casting pieces, and arranging temperature adjusters on the wall body of the mold corresponding to the nodes; and in the cooling process before opening the casting pieces, automatically controlling the temperature adjusters to lead the temperature of the position of the mold corresponding to the node closer to a riser of the mold to be higher than that of the position of the mold corresponding to the former node farther to the riser of the mold all the time. Since the temperature of the mold and the temperature of the casting pieces in the mold are in correspondence relationship and are influenced mutually, cooling or heating is automatically carried out on local positions of the mold, the cooling sequence of the casting pieces in the mold is influenced by detecting and controlling the temperature gradient of the local positions of the mold, and the result with a fixed sequence is obtained, so that no problems of looseness and hole shrinkage are caused for the casting pieces. Due to the characteristics and the advantages, the temperature control method can be applicable to the no-riser aluminium-alloy casting mold.
Description
Technical field
The present invention relates to the aluminium alloy casting technical field of mold, particularly to the temperature detection and the control technology field of the aluminium alloy casting mould of no rising head.
Background technology
In the prior art, aluminium alloy casting will obtain the foundry goods of high-quality, foundry goods will be followed the consecutive solidification principle in the process of cooled and solidified, feeding is carried out by cast gate and rising head in Leng Que position at last, if the local last cooling of foundry goods, but do not have rising head that it is carried out feeding, this position will form loose, shrinkage cavity.For the aluminium alloy casting mould that rising head is not set, particularly for the mould of making large-scale and casting of complicated structure, how to make aluminium alloy castings condensation sequentially, be one of difficult problem that perplexs at present the application of this kind mould for this reason.
Summary of the invention
At the deficiencies in the prior art, the present invention attempts to change the defective of traditional mould natural condensation before unlatching, intervene the process of condensation artificially, thereby make the aluminium alloy casting mould that rising head is not set in condensation process, can make aluminium alloy castings condensation sequentially.
The present invention proposes a kind of temperature-controlled process that does not have the aluminium alloy casting mould of rising head for this reason, it is characterized in that, chooses node more than two according to the situation of the profile size variation of foundry goods, on the described mould wall body corresponding to described node thermosistor is set; In the condensation process before foundry goods is opened, control the mold temperature that mold temperature that described thermosistor makes the nearer relatively described node correspondence position of the cast gate of the described mould of distance is higher than the relative far away previous described node of the described cast gate of distance institute correspondence position all the time automatically.
Further technology side can also be, on the wall body of the described mould of corresponding each described node, also be provided with temperature sensor, described temperature sensor detect the position the mould wall body temperature and send temperature signal to controller, described controller is controlled described thermosistor more automatically.
Further technology side can also be, is 3 ℃ to 7 ℃ corresponding to the temperature difference of the described mould wall body of former and later two described nodes.
Further technology side can also be, is 5 ℃ corresponding to the temperature difference of the described mould wall body of former and later two described nodes.
Further technology side can also be, described node is determined the zone between the position of the profile sudden change of foundry goods.
According to technique scheme, because the temperature of mould is corresponding relation with the temperature of the interior foundry goods of mould, influence each other between them, automatically control for this local location and to cool off or heat mould, and by detecting and the thermograde of control mould local location and then influence the condensation order of foundry goods in the die cavity, the result who obtains consecutive solidification makes that foundry goods not have to loosen, the problem of shrinkage cavity.
Because the present invention has These characteristics and advantage, can be useful in the aluminium alloy casting mould of no rising head.
Description of drawings
Fig. 1 is the structural representation of aluminium alloy casting mould;
Fig. 2 is the schematic diagram that the temperature of aluminium alloy casting mould is controlled.
Wherein, 1-mould upper impression, 2-mould lower impressions, 3-cooling A1,4-cooling B1,5-cooling C1,6-cast gate, 7-thermocouple, 8-cooling C-2,9-thermocouple, 10-cooling B-2,11-thermocouple, 12-cool off A-2.
The specific embodiment
Below in conjunction with accompanying drawing concrete application the specific embodiment of the present invention is done and to be further described.
As shown in Figure 1, casting die comprises mould upper impression 1, mould lower impressions 2, and they are combined to form the die cavity of casting up and down.Position A, position B, position C are respectively three positions of aluminium alloy castings, also are three nodes that we determine according to the profile situation of this foundry goods.Can only on mould, open a cast gate 6 owing to the reason of product structure but rising head is not set; It is best that to solidify order should be that wherein the foundry goods of position C carries out feeding from cast gate 6 from position A to position B, again to position C.If according to the common rule of cooling naturally, because the thickness of position B is thinner, position B will loosen but position A like this will produce shrinkage cavity prior to position A cooled and solidified for this reason; If increase register but time of opening is artificial adjusting at the die location of A position correspondence, often regulating error is bigger, can not reach desirable state, in fact the foundry goods of die casting is often more complicated than foundry goods shown in Figure 1, with the cold foundry goods that is difficult to produce high-quality of artificial method control mould.
For this reason, register (12,3) is set, and thermocouple 11 is set, be used to survey the temperature of mould upper impression 1 of the position of position A in the position of the corresponding position A of mould upper impression 1 in the position of the corresponding position A of mould upper impression 1 and mould lower impressions 2; In like manner, register (10,4,8,5) is set and thermocouple (9,7) is set at the die location of corresponding position B, position C, described register (12,3,10,4,8,5) not only can heat also and can cool.The signal that described thermocouple (11,9,7) is surveyed sends controller (not drawing among the figure) to, and described controller drives corresponding described register (12,3 respectively again according to the temperature signal of each thermocouple; 10,4; 8,5) thus the temperature of this node is made compensation, make to have about 3 ℃ to 7 ℃ between position A, position B, the position C, preferably the thermograde about 5 ℃.In practical operation, can select from described cast gate 6 farthest and belong to the bigger position of thickness for regulating the datum mark of temperature, and set the temperature controlling range of follow-up each node with this.Temperature when first selected node descends like this, when the foundry goods of corresponding site begins to solidify, thereby still can flow and can give feeding to previous node institute corresponding position in the foundry goods position of the next node that joins with it, the problem that loose shrinkage cavity can not occur at first node, by that analogy, described cast gate 6 gives feeding to the position of last node correspondence, and after whole foundry goods consecutive solidifications, described controller is controlled machine again and opened described mould taking-up foundry goods.
Described controller adopts PLC to control, as shown in Figure 2, when material in the mould begin the casting after, described controller PLC per 5 second the run-down mould temperature, when the temperature of position A was lower than 540 ℃, the temperature that begins to control position B was higher than about 5 ℃ of position A temperature all the time; The temperature of also controlling simultaneously position C is higher than about 5 ℃ of the temperature of position B at least; So circulation is up to end.The temperature gap of required control between each node can determine that for the bigger foundry goods of local volume sudden change, its temperature difference requires bigger according to the volume size of foundry goods itself.
Claims (5)
1. do not have the temperature-controlled process of the aluminium alloy casting mould of rising head, it is characterized in that, choose node more than two, on the described mould wall body corresponding to described node thermosistor is set according to the situation of the profile size variation of foundry goods; In the condensation process before foundry goods is opened, control the mold temperature that mold temperature that described thermosistor makes the nearer relatively described node correspondence position of the cast gate of the described mould of distance is higher than the relative far away previous described node of the described cast gate of distance institute correspondence position all the time automatically.
2. temperature-controlled process according to claim 1, it is characterized in that, on the wall body of the described mould of corresponding each described node, also be provided with temperature sensor, described temperature sensor detect the position the mould wall body temperature and send temperature signal to controller, described controller is controlled described thermosistor more automatically.
3. temperature-controlled process according to claim 1 and 2 is characterized in that, is 3 ℃ to 7 ℃ corresponding to the temperature difference of the described mould wall body of former and later two described nodes.
4. temperature-controlled process according to claim 3 is characterized in that, is 5 ℃ corresponding to the temperature difference of the described mould wall body of former and later two described nodes.
5. temperature-controlled process according to claim 1 and 2 is characterized in that, described node is determined zone between the position of the profile of foundry goods sudden change.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110145710XA CN102284696A (en) | 2011-05-30 | 2011-05-30 | Temperature control method of no-riser aluminium-alloy casting mold |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110145710XA CN102284696A (en) | 2011-05-30 | 2011-05-30 | Temperature control method of no-riser aluminium-alloy casting mold |
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| CN102284696A true CN102284696A (en) | 2011-12-21 |
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| CN201110145710XA Pending CN102284696A (en) | 2011-05-30 | 2011-05-30 | Temperature control method of no-riser aluminium-alloy casting mold |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103551508A (en) * | 2013-11-14 | 2014-02-05 | 邵宏 | Energy-saving lower metal die with heat radiating function |
| CN103706779A (en) * | 2013-12-27 | 2014-04-09 | 广东鸿特精密技术股份有限公司 | Method and device for controlling temperature of mould heated by fuel gas in sectionalized mode in aluminium alloy gravity casting |
| CN104550873A (en) * | 2014-12-25 | 2015-04-29 | 天水星火机床有限责任公司 | Controllable heat-dissipation method for use in process of pouring object by molten iron |
| CN105081281A (en) * | 2015-08-25 | 2015-11-25 | 来安县科来兴实业有限责任公司 | Metal mold low-pressure casting process for cast-aluminum gearbox body of high-speed train |
| CN105312542A (en) * | 2014-06-17 | 2016-02-10 | 长葛市吉庆机械厂 | Program control casting die |
| CN107377880A (en) * | 2017-07-24 | 2017-11-24 | 绍兴市振杨机械有限公司 | A kind of mould of consecutive solidification when realizing gravitational casting |
| CN109773164A (en) * | 2018-12-10 | 2019-05-21 | 中国兵器工业第五九研究所 | A kind of aluminum alloy complex Casting Solidification Temperature Field intelligent control system |
| CN109807311A (en) * | 2019-03-05 | 2019-05-28 | 溧阳市新力机械铸造有限公司 | A kind of cooling heat radiator and casting solidification method improving casting solidification efficiency |
| CN110586904A (en) * | 2019-09-20 | 2019-12-20 | 六丰金属科技（昆山）有限公司 | Aluminum alloy long arm part production mould |
| CN112170817A (en) * | 2020-10-15 | 2021-01-05 | 长春理工大学 | Casting mold cooling device and cooling method |
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| EP0498808A1 (en) * | 1989-11-01 | 1992-08-19 | Alcan International Limited | Method of controlling the rate of heat extraction in mould casting |
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| CN2785759Y (en) * | 2005-01-26 | 2006-06-07 | 清华大学 | Temperature control device of die-casting die |
| CN101602102A (en) * | 2009-06-17 | 2009-12-16 | 北京航空航天大学 | The solidification process control method of using small external temperature gradient to eliminate shrinkage cavities and porosity in casting |
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2011
- 2011-05-30 CN CN201110145710XA patent/CN102284696A/en active Pending
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| EP0498808A1 (en) * | 1989-11-01 | 1992-08-19 | Alcan International Limited | Method of controlling the rate of heat extraction in mould casting |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103551508A (en) * | 2013-11-14 | 2014-02-05 | 邵宏 | Energy-saving lower metal die with heat radiating function |
| CN103706779A (en) * | 2013-12-27 | 2014-04-09 | 广东鸿特精密技术股份有限公司 | Method and device for controlling temperature of mould heated by fuel gas in sectionalized mode in aluminium alloy gravity casting |
| CN105312542A (en) * | 2014-06-17 | 2016-02-10 | 长葛市吉庆机械厂 | Program control casting die |
| CN104550873A (en) * | 2014-12-25 | 2015-04-29 | 天水星火机床有限责任公司 | Controllable heat-dissipation method for use in process of pouring object by molten iron |
| CN105081281A (en) * | 2015-08-25 | 2015-11-25 | 来安县科来兴实业有限责任公司 | Metal mold low-pressure casting process for cast-aluminum gearbox body of high-speed train |
| CN107377880B (en) * | 2017-07-24 | 2019-07-02 | 绍兴市振杨机械有限公司 | A kind of mold of consecutive solidification when realizing gravitational casting |
| CN107377880A (en) * | 2017-07-24 | 2017-11-24 | 绍兴市振杨机械有限公司 | A kind of mould of consecutive solidification when realizing gravitational casting |
| CN109773164A (en) * | 2018-12-10 | 2019-05-21 | 中国兵器工业第五九研究所 | A kind of aluminum alloy complex Casting Solidification Temperature Field intelligent control system |
| CN109807311A (en) * | 2019-03-05 | 2019-05-28 | 溧阳市新力机械铸造有限公司 | A kind of cooling heat radiator and casting solidification method improving casting solidification efficiency |
| CN110586904A (en) * | 2019-09-20 | 2019-12-20 | 六丰金属科技（昆山）有限公司 | Aluminum alloy long arm part production mould |
| CN110586904B (en) * | 2019-09-20 | 2021-03-02 | 六丰金属科技（昆山）有限公司 | Aluminum alloy long arm part production mould |
| CN112170817A (en) * | 2020-10-15 | 2021-01-05 | 长春理工大学 | Casting mold cooling device and cooling method |
| CN112170817B (en) * | 2020-10-15 | 2022-03-08 | 长春理工大学 | Casting mold cooling device and cooling method |
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Inventor after: Jian Weiwen Inventor after: Yang Qianwen Inventor before: Jian Weiwen Inventor before: Yang Tianwen |
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Application publication date: 20111221 |