CN214392258U - Riser and casting die - Google Patents
Riser and casting die Download PDFInfo
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- CN214392258U CN214392258U CN202120351666.7U CN202120351666U CN214392258U CN 214392258 U CN214392258 U CN 214392258U CN 202120351666 U CN202120351666 U CN 202120351666U CN 214392258 U CN214392258 U CN 214392258U
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Abstract
The utility model discloses a rising head and foundry goods mould. The riser comprises a riser body and a heat insulation device, wherein the riser body is provided with an upper opening and a lower opening which are oppositely arranged, and a riser inner wall is formed between the upper opening and the lower opening; the heat preservation device comprises a heat preservation inner layer and a cover plate; the heat-insulation inner layer is arranged along the inner wall of the riser, and the shape of the heat-insulation inner layer is matched with that of the inner wall of the riser; the heat insulation inner layer is composed of N heat insulation plates, and N is a natural number not less than 3; the cover plate is arranged above the heat-insulation inner layer and comprises a heat-insulation layer and a second vacuum air chamber; the second vacuum air chamber is arranged in the heat insulation layer. The utility model discloses a rising head simple structure, thermal insulation performance is better.
Description
Technical Field
The utility model relates to a rising head and foundry goods mould.
Background
The riser body is a cavity which is specially arranged in casting and used for storing molten metal, is used for compensating the molten metal required by shrinkage which is possibly generated in the casting forming process, and plays a role in preventing shrinkage cavity, shrinkage porosity, exhaust and slag collection. However, the material of the riser body has a high heat conductivity coefficient, so that the molten metal in the riser body is solidified too fast, and the actual requirement cannot be met. Therefore, it is necessary to provide a feeder with a thermal insulation device to avoid the molten metal from solidifying too fast.
CN202199724U discloses an insulating riser for metal mold casting, wherein a riser seat is fixedly arranged on a mold, an inner riser protective layer and an outer riser protective layer are fixedly arranged on the riser seat, a riser protective layer is arranged between the inner riser protective layer and the outer riser protective layer, and a riser is arranged in the inner riser protective layer.
CN209890695U discloses aluminum alloy casting rising head insulation construction, including the heat preservation stove body, the bottom fixedly connected with control box of heat preservation stove body, the equal fixedly connected with operation groove in front side and the rear side at control box inner chamber top is provided with the backup pad between two operation grooves, and the both ends of backup pad respectively with the both sides fixed connection of control box inner chamber.
CN103406504A discloses a riser heat preservation device of an ingot mold, which aims to reduce the lateral heat dissipation of a casting head of an ingot by inhibiting the heat transfer of the side wall of the riser so as to realize sequential solidification and improve the yield of steel ingots and the quality of the cast ingots. This heat preservation device includes: heavy heat insulation material layer, hollow air chamber, baffle, light heat insulation material layer and strengthening rib.
In summary, the feeder head with the insulation device structure in the prior art is complex, and the insulation effect is still to be improved.
SUMMERY OF THE UTILITY MODEL
In view of this, an object of the present invention is to provide a riser, which has a simple structure and good thermal insulation performance. Another object of the utility model is to provide a casting mould.
The utility model discloses a following technical scheme reaches above-mentioned purpose.
The utility model provides a riser, which comprises a riser body and a heat insulation device, wherein the riser body is of a cylindrical structure and is provided with an upper opening and a lower opening which are oppositely arranged, the diameter of the lower opening is smaller than that of the upper opening, and a riser inner wall is formed between the upper opening and the lower opening; the heat preservation device comprises a heat preservation inner layer and a cover plate;
the heat-insulation inner layer is arranged along the inner wall of the riser, and the shape of the heat-insulation inner layer is matched with that of the inner wall of the riser; the heat insulation inner layer is composed of N heat insulation plates, and N is a natural number not less than 3; the insulation board comprises a thermal insulation layer, a refractory material layer and a first vacuum air chamber, wherein the thermal insulation layer is arranged between the refractory material layer and the inner wall of the riser, and the thermal insulation layer can be tightly attached to the inner wall of the riser; a first vacuum chamber is arranged in the refractory material layer and/or the heat insulation layer; aerogel is filled in the first vacuum air chamber;
the cover plate is arranged above the heat-insulation inner layer and comprises a heat-insulation layer and a second vacuum air chamber; the second vacuum air chamber is arranged in the heat insulation layer; aerogel is filled in the second vacuum air chamber.
According to the riser of the present invention, preferably, the length direction of the insulation board is substantially the same as the axial direction of the riser body; the first vacuum air chamber is arranged along the length direction of the heat insulation plate.
According to the utility model discloses a riser, preferably, the shape of the outside profile of heated board is close isosceles trapezoid.
According to the utility model discloses a riser, preferably, in two adjacent heated boards, wherein the longer base of the outside profile of a heated board and the shorter base of the outside profile of another heated board are located a straight line basically.
According to the riser of the present invention, preferably, the inner wall of the riser has a plurality of inner wall inferior arc surfaces connected in sequence along the circumferential direction; the surface of the heat insulation layer of each heat insulation plate comprises a first inferior arc surface, a second inferior arc surface and a third inferior arc surface which are sequentially connected; the second minor arc surface is matched with the minor arc surface of the inner wall; in two adjacent heated boards, inferior arcwall face that inferior arcwall face cooperation formed of the first inferior arcwall face of one of them heated board and another heated board set up into with inferior arcwall face phase-match of inner wall, inferior arcwall face that inferior arcwall face cooperation formed of the third inferior arcwall face of one of them heated board and another heated board set up into with inferior arcwall face phase-match of inner wall.
According to the utility model discloses a riser, preferably, the surface of refractory material layer is the cambered surface of an indent.
According to the utility model discloses a riser, preferably, every heated board has more than two first vacuum air chambers, and most or all of first vacuum air chamber are located in the insulating layer.
According to the utility model discloses a rising head, preferably, the total volume of whole first vacuum air chamber accounts for 35 ~ 45% of the volume of every heated board.
According to the riser of the present invention, preferably, the outer contour of the cover plate is a semicircular structure; the second vacuum air chambers are uniformly arranged along the straight edge vertical to the semicircular structure.
The utility model also provides a casting mould, including casting mould body and above-mentioned rising head, the rising head sets up on the casting mould body, the under shed of rising head body is close to casting mould body.
The utility model discloses a rising head simple structure can improve the thermal insulation performance of rising head. The utility model discloses a rising head can improve the lumber recovery of foundry goods, adopts the utility model discloses a rising head can make the foundry goods contract 30 ~ 40cm less.
Drawings
Fig. 1 is a schematic view of a riser according to the present invention.
Fig. 2 is the cross section schematic diagram of the utility model discloses an insulation board.
Fig. 3 is the external outline schematic diagram of the heat insulation board of the present invention.
Fig. 4 is the schematic diagram of the external profile of two adjacent insulation boards of the present invention.
Fig. 5 is a schematic cross-sectional view of a cover plate according to the present invention in a top view.
Fig. 6 is a schematic sectional view of a cover plate according to the present invention in a front view.
Fig. 7 is a schematic cross-sectional view of a riser body according to the present invention.
The reference numerals are explained below:
100-casting die body, 200-riser body, 300-heat preservation inner layer, 310-heat preservation plate, 311-heat preservation layer, 3111-first inferior arc surface, 3112-second inferior arc surface, 3113-third inferior arc surface, 312-refractory material layer, 313-first vacuum air chamber, 400-cover plate, 410-heat preservation layer and 420-second vacuum air chamber.
Detailed Description
The invention will be further described with reference to the drawings and the following examples, but the scope of the invention is not limited thereto.
The utility model discloses in, the rising head sets up on the foundry goods mould body. The riser comprises a riser body and a heat preservation device. As described in detail below.
The utility model discloses a rising head body is big-end-up's cylindric structure. The riser body has an upper opening and a lower opening. The lower opening is close to the casting mold body and is positioned right above the casting mold body. The diameter of the lower opening is smaller than the diameter of the upper opening. An inner wall of the riser is formed between the upper opening and the lower opening. According to the utility model discloses an embodiment, the rising head inner wall has the inferior cambered surface of inner wall along the circumferencial direction. By "severe arc" is meant an arc with a radian less than 90 °.
The utility model discloses a heat preservation device includes heat preservation inlayer and apron.
The utility model discloses a heat preservation inlayer sets up along the rising head inner wall. The shape and the arrangement of the heat preservation inner layer are matched with the shape of the inner wall of the riser. Thus being beneficial to insulating the dead head.
The heat preservation inner layer is composed of N heat preservation plates, N is a natural number not less than 3, preferably, N is a natural number not less than 6, and more preferably, N is a natural number not less than 8. According to an embodiment of the utility model, the heat preservation inlayer comprises the heated board more than four. According to the utility model discloses preferred embodiment, the heat preservation inlayer comprises six above heated boards. According to a specific embodiment of the utility model, the heat preservation inlayer comprises eight heated boards. Thus, the heat-insulating inner layer tightly attached to the riser body is formed, and heat insulation of the riser is facilitated.
In certain embodiments, the length direction of the insulation board is substantially coincident with the axial direction of the riser body. The shape of the external outline of the heat-insulation plate is close to an isosceles trapezoid, so that the heat-insulation plate can be ensured to be enclosed into a cylinder shape.
According to the utility model discloses an embodiment, the longer base of the external profile of a heated board and the shorter base of the external profile of another adjacent heated board are located a straight line basically in two adjacent heated boards. Specifically, one of two adjacent insulation boards is placed right side by side, and the other insulation board is placed upside down. Thus, the thermal insulation inner layer which is tightly attached to the inner wall of the riser and is matched with the inner wall of the riser in shape is formed.
The insulation board comprises a thermal insulation layer, a refractory material layer and a first vacuum air chamber. The heat insulation layer is arranged between the refractory material layer and the inner wall of the riser, and the heat insulation layer can be tightly attached to the inner wall of the riser. For example, the heat insulation layer is close to the inner wall of the riser, and the refractory material layer is far away from the inner wall of the riser. Therefore, the heat conductivity coefficient of the heat insulation device of the riser can be reduced, and the heat insulation of the riser is facilitated. The utility model discloses in, the insulating layer is formed by floating pearl or algae mud light clay.
The refractory material layer directly contacts with the molten steel, and the scouring of the molten steel on the insulation board needs to be considered. In the present invention, the refractory material layer may be formed of a magnesia material.
In certain embodiments, the riser inner wall has a plurality of inner wall hypoid surfaces connected in series along the circumferential direction. The number of the intrados of the inner wall is preferably even, so that the insulation board can form an insulation inner layer which is tightly attached to the inner wall of the riser and is matched with the inner wall of the riser in shape. One of the two adjacent insulation boards is placed right side by side, and the other insulation board is placed upside down, so that an insulation inner layer is formed.
The surface of the heat insulation layer of each heat insulation plate comprises a first inferior arc surface, a second inferior arc surface and a third inferior arc surface which are sequentially connected; the second minor arc surface is matched with the minor arc surface of the inner wall; in two adjacent heated boards, inferior arcwall face that inferior arcwall face cooperation formed of the first inferior arcwall face of one of them heated board and another heated board set up into with inferior arcwall face phase-match of inner wall, inferior arcwall face that inferior arcwall face cooperation formed of the third inferior arcwall face of one of them heated board and another heated board set up into with inferior arcwall face phase-match of inner wall.
The surface of the refractory material layer has a concave surface. The recessed surface extends across the entire surface of the refractory layer. According to an embodiment of the present invention, the surface of the refractory material layer is an inwardly concave arc surface.
A first vacuum plenum is disposed in the refractory layer and/or the insulating layer. The first vacuum air chamber is arranged along the length direction of the insulation board. According to an embodiment of the present invention, the first vacuum plenum is disposed in the refractory material layer. According to another embodiment of the present invention, a first vacuum plenum is provided in the insulation layer. According to a further embodiment of the invention, a first vacuum plenum is provided in the refractory material layer and the insulating layer. In certain embodiments, most or all of the first vacuum plenum is located within the insulating layer.
Aerogel is filled in the first vacuum air chamber. Therefore, the heat conductivity coefficient of the heat insulation device of the riser can be reduced, and the strength of the air chamber can be enhanced, so that the air chamber is prevented from being corroded by molten steel to damage the air chamber when bearing the static pressure of the molten steel. This results in faster heat transfer if the chamber is unable to withstand the pressure of the molten steel, which can lead to breakage.
According to an embodiment of the present invention, each insulation board has two or more first vacuum air chambers. According to the utility model discloses a specific embodiment, the first vacuum air chamber in every heated board sets up to two. Every first vacuum air chamber all sets up along the length direction of heated board.
The utility model discloses in, among every heated board, the total volume of whole first vacuum air chamber accounts for 35 ~ 45% of the volume of every heated board, preferably 37 ~ 43%, more preferably 40 ~ 43%. On the one hand, can reduce the coefficient of heat conductivity of rising head heat preservation device like this, on the other hand, the intensity of heated board will be guaranteed like this.
The utility model discloses a apron sets up in the top of heat preservation inlayer. The cover plate comprises a heat insulation layer and a second vacuum air chamber. The second vacuum air chamber is arranged in the heat insulation layer. The cover plate may include more than three second vacuum plenums, preferably more than five second vacuum plenums. The total volume of all the second vacuum air chambers accounts for 35-50%, preferably 40-50%, and more preferably 40-45% of the volume of the cover plate. On the one hand, the coefficient of thermal conductivity of the cover plate can be reduced, and on the other hand, the strength of the cover plate can be guaranteed.
Aerogel is filled in the second vacuum air chamber. This can reduce the thermal conductivity of the cover plate.
In certain embodiments, the outer profile of the cover plate is a semi-circular configuration. The second vacuum air chambers are uniformly arranged along the straight edge vertical to the semicircular structure.
The utility model discloses a heat preservation device of rising head adopts special structure setting, radially and transversely all have vacuum air chamber, postpone the steel ingot at the solidification rate of rising head for on the molten steel can fully supply the ingot body, improve the defect of ingot body solidification in-process.
The utility model discloses in, the insulating layer of heated board and the thermal-insulated heat preservation of apron can adopt identical material to form, also can adopt different materials to form.
The utility model also provides a casting mould, it includes riser and casting mould body as above. The riser is arranged on the casting die body, and the lower opening of the riser body is close to the casting die body. In certain embodiments, the riser is located directly above the casting die body.
Example 1
Fig. 1 is a schematic view of a riser according to the present invention. Fig. 2 is the cross section schematic diagram of the utility model discloses an insulation board. Fig. 3 is the external outline schematic diagram of the heat insulation board of the present invention. Fig. 4 is a schematic view of the outer contour of two adjacent insulation boards of the present invention. Fig. 7 is a schematic cross-sectional view of a riser body according to the present invention.
As shown in fig. 1 and 7, the feeder of the present embodiment is a feeder with an insulating device. The riser comprises a riser body 200 and a heat preservation device. The riser body 200 is disposed on the casting mold body 100. The riser body 200 has a cylindrical structure with a large top and a small bottom. The riser body 200 has an upper opening and a lower opening. The lower opening is close to the casting mold body 100 and is positioned right above the casting mold body 100. The diameter of the lower opening is smaller than the diameter of the upper opening. A riser inner wall is formed between the upper opening and the lower opening, and the riser inner wall is provided with an inner wall minor arc surface along the circumferential direction.
The utility model discloses a heat preservation device includes heat preservation inlayer 300 and apron 400. As shown in fig. 1, 2 and 3, the inner insulating layer 300 is arranged along the inner wall of the riser and is matched with the inner insulating layer in shape. The heat-insulating inner layer 300 is formed of a plurality of heat-insulating boards 310, for example, eight heat-insulating boards 310. The length direction of the heat insulation plate 310 is substantially consistent with the axial direction of the feeder head body 200. The shape of the outer profile of the insulation board 310 approximates an isosceles trapezoid.
As shown in fig. 4, the longer bottom edge of the outer contour of one of the two adjacent insulation boards 310 is substantially aligned with the shorter bottom edge of the outer contour of the other adjacent insulation board 310. That is, one of the two adjacent insulation boards 310 is placed right side by side, and the other is placed upside down.
The insulation board 310 includes an insulation layer 311, a refractory material layer 312, and a first vacuum plenum 313. The insulating layer 311 is provided between the refractory layer 312 and the inner wall of the riser. The heat insulating layer 311 is disposed in close contact with the inner wall of the feeder head body 200. The first vacuum plenum 313 is disposed in the refractory layer 312 and the insulating layer 311, and is mostly located within the insulating layer 311. The first vacuum air chamber 313 is disposed along a length direction of the insulation board 310. The first vacuum chamber 313 is filled with aerogel. The insulation board 310 of the present embodiment includes two first vacuum air chambers 313 arranged in parallel; the total volume of the two first vacuum air chambers 313 accounts for 40% of the volume of the insulation board 310. The refractory layer 312 may be a layer formed of magnesia. The heat insulation layer 311 is formed by algae mud and light clay.
As shown in fig. 2, the surface of the heat insulating layer 311 includes a first minor arc face 3111, a second minor arc face 3112, and a third minor arc face 3113 connected in this order. The second minor arc surface 3112 matches with the minor arc surface of the inner wall of the riser body 200. In two adjacent insulation boards 310, a first minor arc surface 3111 of one insulation board 310 is matched with a first minor arc surface 3113 of the other insulation board 310 to form a minor arc surface A, and the minor arc surface A is matched with a minor arc surface of the inner wall of the riser body 200; the third minor arc surface 3113 of one of the heat-insulating plates 310 and the third minor arc surface 3113 of the other heat-insulating plate 310 are matched to form a minor arc surface B, and the minor arc surface B is matched with the minor arc surface of the inner wall of the riser body 200. The surface of the refractory layer 312 is a concave arc surface, which extends through the entire surface of the refractory layer 312.
Fig. 5 is a schematic cross-sectional view of a cover plate according to the present invention in a top view. Fig. 6 is a schematic sectional view of a cover plate according to the present invention in a front view.
As shown in fig. 1, 5 and 6, the cover plate 400 is disposed above the insulating inner layer 300. The cover plate 400 includes an insulating layer 410 and a second vacuum plenum 420. The second vacuum plenum 420 is disposed in the thermal insulation layer 410. The second vacuum chamber 420 is filled with aerogel. The cover plate 400 of the present embodiment has a plurality of second vacuum plenums 420 and a plurality of insulating layers 410. The second vacuum plenum 420 is disposed at intervals between the heat insulating and preserving layers 410. The heat insulation layer 410 is a layer formed by algae mud light clay. The total volume of the second vacuum plenum 420 is 40% of the volume of the cover plate 400.
The outer profile of the cover plate 400 is a semicircular structure in a plan view. Six second vacuum plenums 420 are provided. The six second vacuum plenums 420 are uniformly arranged along a straight edge perpendicular to the semicircular structure.
Example 2
The casting mold of the present embodiment includes a casting mold body 100 and a riser as shown in embodiment 1. The riser is disposed on the casting body 100, and the lower opening of the riser body 200 is close to the casting mold body 100.
The present invention is not limited to the above embodiments, and any variations, modifications, and substitutions that may occur to those skilled in the art may be made without departing from the spirit of the present invention.
Claims (10)
1. A riser comprises a riser body and a heat insulation device, and is characterized in that the riser body is of a cylindrical structure and is provided with an upper opening and a lower opening which are oppositely arranged, the diameter of the lower opening is smaller than that of the upper opening, and a riser inner wall is formed between the upper opening and the lower opening; the heat preservation device comprises a heat preservation inner layer and a cover plate;
the heat-insulation inner layer is arranged along the inner wall of the riser, and the shape of the heat-insulation inner layer is matched with that of the inner wall of the riser; the heat insulation inner layer is composed of N heat insulation plates, and N is a natural number not less than 3; the insulation board comprises a thermal insulation layer, a refractory material layer and a first vacuum air chamber, wherein the thermal insulation layer is arranged between the refractory material layer and the inner wall of the riser, and the thermal insulation layer can be tightly attached to the inner wall of the riser; a first vacuum chamber is arranged in the refractory material layer and/or the heat insulation layer; aerogel is filled in the first vacuum air chamber;
the cover plate is arranged above the heat-insulation inner layer and comprises a heat-insulation layer and a second vacuum air chamber; the second vacuum air chamber is arranged in the heat insulation layer; aerogel is filled in the second vacuum air chamber.
2. The riser as claimed in claim 1 wherein the length direction of the insulation board is substantially coincident with the axial direction of the riser body; the first vacuum air chamber is arranged along the length direction of the heat insulation plate.
3. The riser of claim 2 wherein the external profile of the insulation board is approximately isosceles trapezoid in shape.
4. The riser as claimed in claim 3 wherein, of two adjacent insulation panels, the longer base of the outer profile of one insulation panel is substantially in line with the shorter base of the outer profile of the other insulation panel.
5. The riser of claim 4, wherein:
the inner wall of the riser is provided with a plurality of inner wall inferior arc surfaces which are sequentially connected along the circumferential direction;
the surface of the heat insulation layer of each heat insulation plate comprises a first inferior arc surface, a second inferior arc surface and a third inferior arc surface which are sequentially connected; the second minor arc surface is matched with the minor arc surface of the inner wall; in two adjacent heated boards, inferior arcwall face that inferior arcwall face cooperation formed of the first inferior arcwall face of one of them heated board and another heated board set up into with inferior arcwall face phase-match of inner wall, inferior arcwall face that inferior arcwall face cooperation formed of the third inferior arcwall face of one of them heated board and another heated board set up into with inferior arcwall face phase-match of inner wall.
6. The riser of claim 5 wherein the surface of said layer of refractory material is a concave arcuate surface.
7. The riser as claimed in claim 6 wherein each insulation board has more than two first vacuum plenums and most or all of the first vacuum plenums are located in the insulating layer.
8. The riser as claimed in claim 7 wherein the total volume of all of the first vacuum chambers in each insulation panel is 35 to 45% of the volume of each insulation panel.
9. The riser as claimed in any one of claims 1 to 8 wherein the cover plate has an outer profile of a semi-circular configuration; the second vacuum air chambers are uniformly arranged along the straight edge vertical to the semicircular structure.
10. A casting mold, comprising a casting mold body and the riser of any one of claims 1 to 9, wherein the riser is arranged on the casting mold body, and the lower opening of the riser body is close to the casting mold body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120351666.7U CN214392258U (en) | 2021-02-08 | 2021-02-08 | Riser and casting die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120351666.7U CN214392258U (en) | 2021-02-08 | 2021-02-08 | Riser and casting die |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214392258U true CN214392258U (en) | 2021-10-15 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120351666.7U Active CN214392258U (en) | 2021-02-08 | 2021-02-08 | Riser and casting die |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214392258U (en) |
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2021
- 2021-02-08 CN CN202120351666.7U patent/CN214392258U/en active Active
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