CN105903904A - Heating device and method for risers of aluminum alloy casting - Google Patents
Heating device and method for risers of aluminum alloy casting Download PDFInfo
- Publication number
- CN105903904A CN105903904A CN201610305414.4A CN201610305414A CN105903904A CN 105903904 A CN105903904 A CN 105903904A CN 201610305414 A CN201610305414 A CN 201610305414A CN 105903904 A CN105903904 A CN 105903904A
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- China
- Prior art keywords
- rising head
- calandria
- alloy casting
- heating
- casting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/08—Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
- B22C9/088—Feeder heads
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
- B22D27/04—Influencing the temperature of the metal, e.g. by heating or cooling the mould
- B22D27/06—Heating the top discard of ingots
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
The invention discloses a heating device for risers of an aluminum alloy casting. The heating device for the risers of the aluminum alloy casting comprises a heating unit located above the casting. The heating unit comprises a plurality of heating bodies, and at least part of each heating body can be immersed into the corresponding riser. The invention further discloses a heating method for the risers of the aluminum alloy casting. At least part of each heating body is immersed into molten aluminum in the corresponding riser, and on the basis of the original punching temperature, the temperature of the molten aluminum in the risers is increased by 50-100 DEG C and then heat preservation is conducted. By the adoption of the technical scheme, the heating device and method for the risers of the aluminum alloy casting are advantageous in that because the heating bodies are used for heating the risers, the height of the risers can be reduced by a half or above on the original basis, the sand consumption of riser sand cores is reduced by 40-60%, the consumption of the molten aluminum of the risers is reduced by 40-60%, the process yield of castings is increased by 15-30% or above compared with the original process, and the casting cost can be directly reduced by 5-9%.
Description
Technical field
The present invention relates to a kind of aluminium alloy casting heating device for rising head and riser heating method, belong to aluminium alloy casting technology field.
Background technology
Rising head is that only in order to avoid foundry goods to occur, defect is attached to above foundry goods or the supplementary part of side.Function is in casting mold, and the die cavity of rising head is the cavity of storage liquid metal, feeds metal when foundry goods is formed, has and prevent shrinkage cavity and porosity, aerofluxus and the effect of collection slag, and the Main Function of rising head is feeding.The rising head that the design function of rising head is different, its form, size and offer position and all differ.The kind of rising head generally includes: common rising head, and the rising head made of common Modeling Material is at common rising head；Insulated feeder, the rising head made of insulation material is insulated feeder, and the molten metal in insulated feeder is longer than common rising head setting time, saves metal；Exothermic riser, adds exothermic mixture in Riser material, after pouring into molten metal, and exothermic mixture reaction heating, make molten metal can keep the longer time in the liquid state, more save metal than insulated feeder.Insulated feeder is mainly with sand, and floating bead, flyash, the heat-insulating material such as refractory fiber cotton (suction strainer rising head) is made.Pure insulation can not be generated heat, it is therefore an objective to slows down the setting time of molten iron in riser buss, improves feeding efficiency.Heat preservation rising head, is to add a certain amount of thermite, flux when making rising head, and oxidant forms with above-mentioned heat-insulating material.Heating has heat insulation function concurrently simultaneously, and during casting, rising head is lighted rapidly burning at about 680 °, and in now liberated heat makes its rising head, bonded hard ferrite magnet raises, and makes rising head inner metal liquid setting time elongated, extends the feeding time, improves the rising head feeding efficiency to foundry goods.But add in hot riser generally exists sand mould rising head and lay the defect that combustion heating device is disposably scrapped, supplies consumption cost is high.In metal mold gravity casting part technique, the method of industry universal is the top riser (being arranged on the rising head of the top of foundry goods thermal center) of 2/3rds height arranging foundry goods, add the restriction of feeding pressure angle and feeding distance, the yield rate causing foundry goods is low, molten metal escort casting cost remains high, particularly in gravitational casting aluminium alloy cylinder lid industry, casting process yield rate, about 50%, becomes long-standing problem whole world casting industry and produces the bottleneck of casting cost.As a example by current gravitational casting aluminium alloy cylinder lid, such as Fig. 1, shown in 2, in cylinder head casting 1, cylinder cap spark plug post thermal center 2 is arranged over rising head core 3, the height H of rising head core 3 is about 2/3rds of the height of cylinder head casting 1, some rising heads 4 for spark plug post thermal center feeding it are provided with in rising head core 3, such as length L of rising head 4 in Fig. 2, in this gravitational casting aluminium alloy cylinder cover process, rising head is tall and big, casting process yield rate is lowly to about 50%, rising head is tall and big so that core grit consuming amount is big, also result in aluminum liquid consumption more, natural cost remains high, it it is the difficult problem that generally exists of gravitational casting industry aluminium alloy cylinder lid industry.
Summary of the invention
Therefore, it is an object of the invention to overcome defect of the prior art, a kind of Al alloy casting riser heater that can be effective to multi items is provided, and the method using this heater to heat Al alloy casting riser is provided, the weight of rising head aluminum water can be reduced, improve casting pressing port heat, increase and emit port temperature field feeding abundant to foundry goods.
To achieve these goals, a kind of Al alloy casting riser heater of the present invention, the gear unit including heating unit, being connected with described heating unit and the driver element that can be moved up and down by the described gear unit described heating unit of driving；Described heating unit is positioned at the top of foundry goods, and including some calandrias, the quantity of described calandria is equal with the rising head quantity of described foundry goods, and each described calandria can immerse in the rising head of correspondence at least partially；Described calandria is electric heating body, is connected to temperature conditioning unit by wire.
The height of described rising head is the 1/3 of described foundry goods height.
Described calandria is installed on the lower surface of an installing plate, and described installing plate is connected to described gear unit.
A kind of Al alloy casting riser heating means of the present invention, use foregoing Al alloy casting riser heater to implement, comprise the steps:
1) calandria is moved the position to the rising head upper end liquid level after foundry goods has poured；
2) after foundry goods has poured, calandria is immersed at least partially in the aluminum liquid of rising head, be incubated after 50～100 DEG C being promoted again on the basis of the aluminum liquid of rising head temperature after former stamp；
3) when be positioned at the heat energy-saving position below rising head start solidification and completely solidification before, in rising head, remove described calandria.
In step 2, the degree of depth in described calandria immerses described rising head is the 1/2 of the height of described rising head.
In step 2, corresponding rising head is separately or concurrently heated by multiple described calandrias.
Use technique scheme, a kind of Al alloy casting riser heater of the present invention and riser heating method, owing to using calandria that rising head is heated, therefore the height of rising head can be reduced by more than 50 on the basis of original, reduce rising head core consumption sand 40～60%, reduce rising head aluminum water and accompany consumption 40～60%, compare former technique and improve casting process yield 15～more than 30%, can directly reduce casting cost 5～9%.
Accompanying drawing explanation
Fig. 1 is cylinder head casting casting technique medium casting and the structural representation of rising head in prior art.
Fig. 2 be in Fig. 1 A-A to sectional view.
Fig. 3 is to use assembly of the invention and the structural representation of the cylinder head casting casting technique medium casting of method, rising head and heater.
Fig. 4 be in Fig. 3 B-B to sectional view.
Fig. 5 is temperature conditioning unit schematic diagram.
Fig. 6 is rising head core and rising head example schematic after the method for the present invention is implemented.
Fig. 7 is that the C-C of Fig. 6 is to sectional view.
Detailed description of the invention
Below by way of the drawings and specific embodiments, the present invention is described in further detail.
As shown in Fig. 3,4,5, the present embodiment provides a kind of Al alloy casting riser heater, the gear unit 50 including heating unit 5, being connected with described heating unit and can drive, by described gear unit 50, the driver element (not shown) that described heating unit 5 moves up and down；Described heating unit 5 is positioned at the top of cylinder head casting 1, and including some calandrias 6, the quantity of described calandria 6 is equal with rising head 8 quantity of described cylinder head casting, and each described calandria 6 can immerse in the rising head 8 of correspondence at least partially；Described calandria 6 is electric heating body, and the terminals 10 on calandria 6 are connected to temperature conditioning unit 11 by wire.
The height of described rising head 8 be described cylinder head casting 1 height 1/3, relative to the height of rising head in prior art be described cylinder head casting height 2/3 for be reduced to half, greatly reduce rising head core consumption sand and rising head aluminum water accompany consumption.
Described calandria 6 is installed on the lower surface of an installing plate 500, and described installing plate is connected to described gear unit.
Heating device for rising head of the present invention includes some calandrias 6, it is immersed in the rising head 8 aluminum liquid top liquid level pouring into a mould the rising head core 7 put in place, freely downwardly extending some calandrias 6,30～150S can be directly heated in the liquid level of aluminum liquid top separately or together in some rising heads 8, then take out calandria 6, in Fig. 4, the supply terminals 10 of calandria 6 connects Fig. 5 temperature conditioning unit 11, and the temperature data collected by temperature sensor 9 by temperature conditioning unit 11 is to the setting of calandria 6 heating-up temperature value and automatically controls calandria 6 heating-up temperature.The calandria 6 being immersed in the liquid level of rising head top directly heats depending on the time is the size according to cylinder cap spark plug post thermal center 2, and thermal center is short for little heat time heating time, and corresponding thermal center is long for big the most then heat time heating time.Calandria 6 directly heats holding temperature value and necessarily be greater than in rising head 8 temperature of aluminum liquid 50～150 DEG C, calandria 6 arrange power, quantity, shape then according to concrete casting pressing port technique it needs to be determined that.
A kind of Al alloy casting riser heating means of the present invention, use foregoing Al alloy casting riser heater to implement, comprise the steps:
1) calandria is moved the position to the rising head upper end liquid level after foundry goods has poured；
2) after foundry goods has poured, calandria is immersed at least partially in the aluminum liquid of rising head, it is incubated after promoting 50～100 DEG C again on the basis of the aluminum liquid of rising head temperature after former stamp, thus directly to the upper pyrometer aluminum liquid gravity feeding at cylinder cap spark plug post thermal center 2 position；
3) start solidification and before solidification completely when being positioned at the heat energy-saving position below rising head, in rising head, remove described calandria, i.e. reach Fig. 6, rising head core 7 and the loss of weight of rising head 8 in 7, ensure again cylinder cap spark plug post heat energy-saving position inherent quality.
In step 2, the degree of depth in described calandria immerses described rising head is the 1/2 of the height of described rising head.
In step 2, corresponding rising head is separately or concurrently heated by multiple described calandrias.
The present invention is compared with prior art；One is to increase to arrange heating device for rising head in casting technique structure, directly heat the aluminum liquid in rising head, by the aluminum liquid of rising head former fill type end temp on the basis of promote 50～100 DEG C again, from processing hardware, really realize the solution of a low temperature riser feeding difficult problem for casting industry；Two to be that prior art exists casting process yield rate low, molten metal escort casting cost remains high, casting process yield is only about 50%, and become puzzlement whole world casting industry for a long time and produce the bottleneck of casting cost, the present invention solves the problem above generally existed in prior art, quality has obtained the guarantee of hardware equipped, such as rising head core height H=100mm is reduced to H1=50mm, reduce rising head core consumption sand 40～60%, the height H=100mm of rising head is reduced to H1=50mm, reduce rising head aluminum water and accompany consumption 40～60%, compare former technique and improve casting process yield 15～more than 30%, can directly reduce cylinder cap casting cost 5～9%.
Obviously, above-described embodiment is only for clearly demonstrating example, and not restriction 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 without also cannot all of embodiment be given exhaustive.And the obvious change thus extended out or variation still in the protection domain of the invention among.
Claims (6)
1. an Al alloy casting riser heater, it is characterised in that: include heating unit, the gear unit being connected with described heating unit and the driver element that described heating unit can be driven to move up and down by described gear unit；Described heating unit is positioned at the top of foundry goods, and including some calandrias, the quantity of described calandria is equal with the rising head quantity of described foundry goods, and each described calandria can immerse in the rising head of correspondence at least partially；Described calandria is electric heating body, is connected to temperature conditioning unit by wire.
2. Al alloy casting riser heater as claimed in claim 1, it is characterised in that: the height of described rising head is the 1/3 of described foundry goods height.
3. Al alloy casting riser heater as claimed in claim 1, it is characterised in that: described calandria is installed on the lower surface of an installing plate, and described installing plate is connected to described gear unit.
4. Al alloy casting riser heating means, use foregoing Al alloy casting riser heater to implement, it is characterised in that to comprise the steps:
1) calandria is moved the position to the rising head upper end liquid level after foundry goods has poured；
2) after foundry goods has poured, calandria is immersed at least partially in the aluminum liquid of rising head, be incubated after 50～100 DEG C being promoted again on the basis of the aluminum liquid of rising head temperature after former stamp；
3) when be positioned at the heat energy-saving position below rising head start solidification and completely solidification before, in rising head, remove described calandria.
5. Al alloy casting riser heating means as claimed in claim 4, it is characterised in that: in step 2, described calandria immerses 1/2 that the degree of depth in described rising head is the height of described rising head.
6. Al alloy casting riser heating means as claimed in claim 4, it is characterised in that: in step 2, corresponding rising head is separately or concurrently heated by multiple described calandrias.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610305414.4A CN105903904A (en) | 2016-05-10 | 2016-05-10 | Heating device and method for risers of aluminum alloy casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610305414.4A CN105903904A (en) | 2016-05-10 | 2016-05-10 | Heating device and method for risers of aluminum alloy casting |
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| CN105903904A true CN105903904A (en) | 2016-08-31 |
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| CN201610305414.4A Pending CN105903904A (en) | 2016-05-10 | 2016-05-10 | Heating device and method for risers of aluminum alloy casting |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111515341A (en) * | 2020-02-21 | 2020-08-11 | 中铁物总技术有限公司 | Method for improving internal quality of high manganese steel frog and reducing production cost |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20060014533A (en) * | 2004-08-11 | 2006-02-16 | 현대중공업 주식회사 | Integration riser heating machine for casting of the propeller and metal |
| CN201415252Y (en) * | 2009-05-31 | 2010-03-03 | 湖南楊子冶金實業有限公司 | Riser heater for casting |
| CN202316980U (en) * | 2011-11-14 | 2012-07-11 | 华远善 | Heating device for rising head casting |
| CN104722715A (en) * | 2015-04-15 | 2015-06-24 | 温州瑞明工业股份有限公司 | Cylinder head casting riser heating device |
| CN205702322U (en) * | 2016-05-10 | 2016-11-23 | 浙江凯吉汽车零部件制造有限公司 | A kind of aluminium alloy casting heating device for rising head |
-
2016
- 2016-05-10 CN CN201610305414.4A patent/CN105903904A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20060014533A (en) * | 2004-08-11 | 2006-02-16 | 현대중공업 주식회사 | Integration riser heating machine for casting of the propeller and metal |
| CN201415252Y (en) * | 2009-05-31 | 2010-03-03 | 湖南楊子冶金實業有限公司 | Riser heater for casting |
| CN202316980U (en) * | 2011-11-14 | 2012-07-11 | 华远善 | Heating device for rising head casting |
| CN104722715A (en) * | 2015-04-15 | 2015-06-24 | 温州瑞明工业股份有限公司 | Cylinder head casting riser heating device |
| CN205702322U (en) * | 2016-05-10 | 2016-11-23 | 浙江凯吉汽车零部件制造有限公司 | A kind of aluminium alloy casting heating device for rising head |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111515341A (en) * | 2020-02-21 | 2020-08-11 | 中铁物总技术有限公司 | Method for improving internal quality of high manganese steel frog and reducing production cost |
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Application publication date: 20160831 |
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