CN102784895A - Casting device and manufacture method for columnar ingot - Google Patents
Casting device and manufacture method for columnar ingot Download PDFInfo
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- CN102784895A CN102784895A CN2012101529530A CN201210152953A CN102784895A CN 102784895 A CN102784895 A CN 102784895A CN 2012101529530 A CN2012101529530 A CN 2012101529530A CN 201210152953 A CN201210152953 A CN 201210152953A CN 102784895 A CN102784895 A CN 102784895A
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Abstract
The purpose of this invention is to provide a casting device for a columnar ingot and a manufacture method via use of the casting device capable of inhibiting shrinkage hole and improving separation performance of separating from the middle tank after casting. The casting device for the columnar ingot comprises a plurality of columnar moulds and the middle tank, the middle tank is provided with a plurality of pouring mouths at the bottom corresponding to the moulds, the bottom can be in a contact with and separation from heat insulation frames disposed at the upper part of the moulds, the heat insulation frames of the moulds are independently disposed relative to each mould, and are respectively provided with: a heat insulation cylinder in a connection with the mould main body; a heat insulation cover part provided with an opening hole communication part guiding molten metal from the pouring mouths to the mould, and formed to be in the shape that the opening hole communication part is in a peripheral suspension relative to the heat insulation cylinder.
Description
Technical field
The present invention relates to a plurality of casting molds, be typically the method that the casting mold that is rectangular (ranks shape) configuration carries out teeming casting simultaneously, the manufacturing approach that relates to the generation that can suppress shrinkage cavity and improved the casting device of the column ingot separatory that separates from pans (tundish) the casting back and used the column ingot that this casting device carries out.
Background technology
All the time, in investment casting (lost wax casting method) etc., make highly purified base metal (master metal) usually in advance, and with this base metal fusing and cast.
In model casting,, therefore need prepare the base metal of a plurality of specific dimensions in advance because its fusing unit is little.As the method for this base metal of casting, the casting method that the oriented casting mold that is rectangular (ranks shape) configuration carries out the teeming casting is simultaneously proposed.
For example; The device of casting a plurality of ingot bars when patent documentation 1 is put down in writing divides between the adapted pans at a plurality of casting molds that are set up in parallel and erect setting and the motlten metal that has towards the sprue gate of each casting mold, clamps the platysome with the fire proofing material system that is communicated with sprue.In the method, owing to can cast simultaneously, therefore there is casting time weak point and can casts, can not produce the not enough advantage of rising head to each casting mold equably to a plurality of casting molds.
Patent documentation 1: Japan opens clear 62-82150 communique in fact
The casting method of as stated, carrying out teeming casting simultaneously to the casting mold that is rectangular (ranks shape) configuration is effective for the manufacturing of base metal.
On the other hand, according to the inventor's research, found out that following problem is the reason that causes productivity ratio to reduce.
Make at the same time under the situation of a plurality of ingot bars, need make and distribute the pans of motlten metal to have intensity, therefore, the pans of accepting motlten metal need have refractory body that directly contacts with motlten metal and the framework that refractory body is strengthened.In this case; For motlten metal; Self becomes cooling body pans, and therefore, the heat of the motlten metal in the rising head after the casting is captured by pans; In the casting mold ingot bar fully before the supplying melting metal motlten metal solidify, rising head plays a role not yet in effectly and in ingot bar, produces shrinkage cavity.Cut off to produce when the base metal of shrinkage cavity is arranged, smear metal is invaded in the shrinkage cavity, therefore becomes the reason of the unfavorable condition that takes place when this base metal melted once more.Increasing under the situation of rising head in order to solve this problem, do not giving birth to harmful effect, can produce production loss though can not confront volume production.
And, if be connected to the diameter at sprue gate of casting mold from pans little, then exist produce the sprue gate that causes because of the scum silica frost of from stove, sneaking into motlten metal, refractory body etc. stop up, narrow, thereby motlten metal can't get into the interior situation of casting mold.If only be merely to increase the sprue gate diameter, then the residue motlten metal of pans is connected with ingot bar securely, the processability variation.In order to improve the ingot bar surface, increasing casting speed is effective method, but in order to increase casting speed, needs to increase the diameter at sprue gate, also can produce the problems referred to above in this case.
Summary of the invention
In view of above-mentioned problem, the objective of the invention is to, a kind of manufacturing approach that can suppress the generation of shrinkage cavity and improve the casting device of the column ingot separatory that the casting back separates from pans and used the column ingot that this casting device carries out is provided.
The casting device of column ingot of the present invention possesses: a plurality of column casting molds; And pans; These pans have a plurality of sprue gates corresponding with each above-mentioned casting mold in the bottom; Above-mentioned bottom can contact, separate with the heat-insulating frame on the top that is arranged on above-mentioned casting mold; The heat-insulating frame of above-mentioned casting mold independently is provided with respect to each above-mentioned casting mold, and possesses: heat insulation cylindrical shell, and this heat insulation cylindrical shell is connected with the casting mold main body; And heat insulation cap, this heat insulation cap has the perforate interconnecting part that the motlten metal from above-mentioned sprue gate is imported to casting mold, and above-mentioned heat insulation cap forms above-mentioned perforate interconnecting part with respect to the unsettled shape of above-mentioned heat insulation cylindrical shell complete cycle.
The bottom surface of the preferred especially pans of the present invention is covered by metal carrier.
And; Use the manufacturing approach of the column ingot of the present invention that above-mentioned casting device carries out to be: to make under above-mentioned pans and the above-mentioned heat-insulating frame state of contact; Carry out the teeming casting simultaneously to above-mentioned a plurality of column casting molds; Pans are left from heat-insulating frame, thereby separate between above-mentioned sprue gate and the heat-insulating frame.
According to the present invention,, therefore can improve the quality of ingot bar effectively owing to can prevent the generation of shrinkage cavity.And owing to can prevent that pans link to each other with ingot bar securely, therefore the raising for processability is effective.
Description of drawings
Fig. 1 is the sketch map that an example of casting device of the present invention is shown.
Fig. 2 is the cross-sectional schematic that an example of casting device of the present invention is shown.
Fig. 3 be illustrate the contact portion that is applied to casting mold of the present invention and pans form one the example cross-sectional schematic.
Fig. 4 is the cross-sectional schematic that an example of having used ingot bar of the present invention is shown.
Fig. 5 is the cross-sectional schematic of an example of form of contact portion that casting mold and the pans of comparative example are shown.
Fig. 6 is the cross-sectional schematic that an example of the ingot bar of having used comparative example is shown.
Label declaration:
1: the pans refractory body; 2: the pans framework; 3: the sprue gate; 4: heat-insulating frame; 4a: heat insulation cylindrical shell; 4b: heat insulation cap; 4c: perforate interconnecting part; 5: casting mold; 6: chill; 7: platform; 8: shrinkage cavity; 9: the bight; 10: the residual motlten metal in sprue gate
The specific embodiment
Below, use accompanying drawing that the present invention is elaborated.Fig. 1 is the sketch map that an example that is applied to casting device of the present invention is shown.And, Fig. 2 and Fig. 3 be respectively illustrate the contact portion that is applied to casting mold of the present invention and pans form one the example cross-sectional schematic.
At first, as shown in Figure 1, the casting device of column ingot of the present invention uses a plurality of column casting molds 5.The column ingot is favourable for the use shape of base metal, can make a plurality of column ingots simultaneously, and is outstanding aspect productivity ratio.The casting mold shape is so long as column gets final product, and the cross section can be that rectangle also can be circular.From the casting mold property made aspect, be preferably circle.
And as shown in Figure 2, pans can be used to have the refractory body 1 of accepting motlten metal and this refractory body 1 is strengthened and the pans of the framework 2 that supports.This is because if pans are the refractory body monomer, then make under the situation of a plurality of column ingots the undercapacity of pans at the same time.At this moment, the bottom surface of preferred pans is covered by the scaffold of metal.And pans have a plurality of sprue gates 3 corresponding with each casting mold in the bottom.And then pans framework 2 can contact, separate with the heat-insulating frame 4 on the top that is arranged on above-mentioned casting mold.This be for the center that suitably makes the sprue gate consistent with the center of heat-insulating frame.And from preventing aspect such as molten metal leakage, preferred heat-insulating frame 4 and pans framework 2 fit tightly when casting.
In the present invention, with respect to casting device, for the generation that suppresses shrinkage cavity, and improve above-mentioned column ingot after the casting, be provided with heat-insulating frame shown in Figure 34 from the separation property that pans separate with above-mentioned basic structure.
In Fig. 3, the heat-insulating frame 4 that contacts with the bottom of pans independently is provided with respect to each casting mold.This is because if between the sprue gate 3 of pans and heat-insulating frame 4, have the parts that are used to form other sprues, then exist because of the misgivings separatory after damaging casting in the frozen metal of this part generation.
Heat-insulating frame 4 of the present invention is provided with: the heat insulation cylindrical shell 4a that is connected with the casting mold main body; And heat insulation cap 4b; This heat insulation cap 4b has the perforate interconnecting part 4c that imports casting mold from the motlten metal at above-mentioned sprue gate 3, and this heat insulation cap 4b forms the shape of the casting mold side of perforate interconnecting part 4c with respect to heat insulation cylindrical shell 4a complete cycle unsettled (overhang).At this moment, the diameter of preferred aperture interconnecting part 4c is littler than the diameter at sprue gate 3.Thus, the operation of separation pans and ingot bar becomes easy.
And; In the present invention, form the heat insulation cap 4b of unsettled shape, make that the motlten metal in the casting mold does not contact with the pans framework 2 of supporting pans refractory body 1 through setting; Therefore; Heat can not captured by pans from ingot bar top, and heat-insulating frame can play a role to ingot bar effectively, can access complete ingot bar.And; In the present invention, can prevent to be connected to the sprue gate obstruction of casting mold, therefore from pans; Even if produce when shrinking in that ingot bar is inner, also can be replenish motlten metals in 4 from pans towards heat-insulating frame filling with to casting mold after the motlten metal that motlten metal begins to solidify.Therefore, in the present invention, need not to increase the generation that heat-insulating frame 4 just can effectively prevent the shrinkage cavity in the ingot bar.
The material of heat insulation cap 4b and heat insulation cylindrical shell 4a is preferably used the high heat-barrier material of heat-proof quality, can use the material that is made up of for example silicon oxide fibre, ceramic fibre, alumina fibre etc., hopes to use soft material.
In the present invention, through using the unsettled shape of complete cycle at heat insulation cap 4b, resulting ingot bar forms the shape of Fig. 4.Based on this shape, the residual motlten metal that is connected to sprue gate 3 in the pans contacts with ingot bar hardly, and therefore, the operation that pans and casting mold are separated in the casting back becomes easy.At this,, except be rectangular shaped shown in Figure 3 with respect to heat insulation cylindrical shell 4a, also can suitably select rounded shapes, cone-shaped as unsettled shape.
In addition; If the unsettled shape of heat insulation cap 4b of the present invention forms the angle of shape that tapered shape ground narrows down along with trend perforate interconnecting part 4c and the wall that forms unsettled shape near vertical; The upper corner 9 of ingot bar then shown in Figure 4 links to each other along the unsettled shape of heat insulation cap 4b, thus the misgivings grow that pans and ingot bar link to each other securely.
Therefore, as unsettled shape, preferably form level with the pans bottom surface.And,, also preferably around perforate interconnecting part 4c, be provided with and pans bottom surface horizontal portion even if be provided with under the situation of the conical surface.
Fig. 5 illustrates the routine cross-sectional schematic of form of contact portion of casting mold and the pans of expression comparative example.Be not provided with in the structure of Fig. 5 of the heat insulation cap with unsettled shape at heat-insulating frame 4, the motlten metals in the heat-insulating frame 4 are by 2 coolings of pans framework, and the cross section of resulting ingot bar forms form shown in Figure 6.Fig. 6 is the cross-sectional schematic that heat-insulating frame does not have the ingot bar under the situation of unsettled shape.Because the motlten metal in the heat-insulating frame 4 is by the pans cooling on heat-insulating frame 4 tops, therefore, can't be in ingot bar supplying melting metal fully, the depths that exists in the ingot bar produces the situation of shrinkage cavity 8.
And, though the position of pans and the ingot bar residual motlten metal 10 at the sprue gate is cut off,, then can't utilize the deadweight of ingot bar to cut off if the sprue gate diameter is big, be difficult to cut apart the operation of pans and ingot bar.
And; Cut apart under the situation of pans and ingot bar utilizing ingot bar to conduct oneself with dignity; Need under the red heat state, carry out above-mentioned operation; Can confirm to have following problem this moment: when the bottom of the residual motlten metal 10 at the sprue gate was cut apart, the shrinkage cavity surface in the ingot bar was by high-temperature oxydation, and the volume production of therefore can confronting is given birth to harmful effect.
Below, use Fig. 1, Fig. 2 and Fig. 3, the concrete example of the manufacturing process of the column ingot that used casting device of the present invention is described.
At first, prepare to dispose the platform 7 of chill 6, the casting mold 5 of hollow cylindrical is set on platform 7.Subsequently, the above-mentioned thermal insulation barriers with perforate interconnecting part 4c that is formed by heat insulation cylindrical shell 4a and heat insulation cap 4b is set on the top of casting mold 5.After this, make under pans framework 2 and the above-mentioned heat-insulating frame state of contact, utilize other not shown pans to inject motlten metals, carrying out the teeming casting simultaneously to a plurality of column casting molds 5 to pans 2.
After casting finishes, pans framework 2 is left to the top from heat-insulating frame 4.
At this moment, such as Fig. 3 the record owing to utilize heat insulation cap 4b to be formed with unsettled shape, so the ingot bar shape forms shape shown in Figure 4, between from the sprue gate to the heat-insulating frame, separates by deadweight.Take out ingot bar from casting mold at last, can access the ingot of column.
Claims (3)
1. the casting device of a column ingot,
The casting device of this column ingot is characterised in that,
The casting device of said column ingot possesses:
A plurality of column casting molds; And
Pans, said pans have a plurality of sprue gates corresponding with each above-mentioned casting mold in the bottom, above-mentioned bottom can contact, separate with the heat-insulating frame on the top that is arranged on said casting mold,
The heat-insulating frame of said casting mold independently is provided with respect to each above-mentioned casting mold, and possesses:
Heat insulation cylindrical shell, this heat insulation cylindrical shell is connected with the casting mold main body; And
Heat insulation cap, this heat insulation cap have the open communication portion that imports casting mold from the motlten metal at said sprue gate, and the casting mold side that said heat insulation cap forms above-mentioned perforate interconnecting part is with respect to the unsettled shape of said heat insulation cylindrical shell complete cycle.
2. the casting device of column ingot according to claim 1 is characterized in that,
The bottom surface of pans is covered by metal carrier.
3. the manufacturing approach of a column ingot,
The manufacturing approach of this column ingot is used the casting device of claim 1 or 2 described column ingots,
Make under said pans and the said heat-insulating frame state of contact, carrying out teeming casting simultaneously, pans are left from heat-insulating frame, thereby separating between said sprue gate and the heat-insulating frame to said a plurality of column casting molds.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011-109113 | 2011-05-16 | ||
| JP2011109113A JP5742014B2 (en) | 2011-05-16 | 2011-05-16 | Columnar ingot casting apparatus and columnar ingot manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102784895A true CN102784895A (en) | 2012-11-21 |
| CN102784895B CN102784895B (en) | 2015-06-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210152953.0A Active CN102784895B (en) | 2011-05-16 | 2012-05-16 | Casting device and manufacture method for columnar ingot |
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| Country | Link |
|---|---|
| JP (1) | JP5742014B2 (en) |
| CN (1) | CN102784895B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112338154A (en) * | 2020-10-23 | 2021-02-09 | 江苏隆达超合金航材有限公司 | Casting flow dividing device for improving yield of cast high-temperature alloy |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104128572B (en) * | 2014-08-01 | 2016-05-25 | 昆明理工大学 | A kind of composite zinc ingot metal mould and preparation method thereof |
| CN112045165A (en) * | 2020-09-04 | 2020-12-08 | 江苏隆达超合金航材有限公司 | Cooling device in casting high-temperature alloy pouring process |
Citations (7)
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|---|---|---|---|---|
| GB881799A (en) * | 1958-12-23 | 1961-11-08 | Sandvikens Jernverks Ab | Improvements in or relating to hot tops |
| GB1276094A (en) * | 1968-08-16 | 1972-06-01 | Foseco Trading Ag | Hot tops for ingot moulds |
| JPS6282150U (en) * | 1985-11-11 | 1987-05-26 | ||
| CN1033249A (en) * | 1987-11-16 | 1989-06-07 | 瑞士铝公司 | The device of casting molten metal |
| JPH09150239A (en) * | 1995-11-27 | 1997-06-10 | Daido Steel Co Ltd | Mold pressing frame |
| CN201172100Y (en) * | 2008-04-03 | 2008-12-31 | 上海宝钢铸造有限公司 | Ingot mold tank type hot top |
| CN101722280A (en) * | 2009-12-28 | 2010-06-09 | 舞阳钢铁有限责任公司 | Die casting method and die casting equipment for heavy section crack detection steel grade |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58942B2 (en) * | 1978-08-23 | 1983-01-08 | 日新製鋼株式会社 | Top-pouring sealed heat retention device and top-pouring agglomeration method using the same |
| JP2002263829A (en) * | 2001-03-07 | 2002-09-17 | Mitsubishi Shindoh Co Ltd | Molten metal holding member and heat-resistant block |
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2011
- 2011-05-16 JP JP2011109113A patent/JP5742014B2/en active Active
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2012
- 2012-05-16 CN CN201210152953.0A patent/CN102784895B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB881799A (en) * | 1958-12-23 | 1961-11-08 | Sandvikens Jernverks Ab | Improvements in or relating to hot tops |
| GB1276094A (en) * | 1968-08-16 | 1972-06-01 | Foseco Trading Ag | Hot tops for ingot moulds |
| JPS6282150U (en) * | 1985-11-11 | 1987-05-26 | ||
| CN1033249A (en) * | 1987-11-16 | 1989-06-07 | 瑞士铝公司 | The device of casting molten metal |
| JPH09150239A (en) * | 1995-11-27 | 1997-06-10 | Daido Steel Co Ltd | Mold pressing frame |
| CN201172100Y (en) * | 2008-04-03 | 2008-12-31 | 上海宝钢铸造有限公司 | Ingot mold tank type hot top |
| CN101722280A (en) * | 2009-12-28 | 2010-06-09 | 舞阳钢铁有限责任公司 | Die casting method and die casting equipment for heavy section crack detection steel grade |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112338154A (en) * | 2020-10-23 | 2021-02-09 | 江苏隆达超合金航材有限公司 | Casting flow dividing device for improving yield of cast high-temperature alloy |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102784895B (en) | 2015-06-03 |
| JP2012240050A (en) | 2012-12-10 |
| JP5742014B2 (en) | 2015-07-01 |
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