CN210877416U - Sand erosion prevention ceramic structure at bottom of large-scale ductile iron sprue - Google Patents
Sand erosion prevention ceramic structure at bottom of large-scale ductile iron sprue Download PDFInfo
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- CN210877416U CN210877416U CN201921935221.2U CN201921935221U CN210877416U CN 210877416 U CN210877416 U CN 210877416U CN 201921935221 U CN201921935221 U CN 201921935221U CN 210877416 U CN210877416 U CN 210877416U
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- splicing
- sprue
- groove
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- flow guide
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- 239000000919 ceramic Substances 0.000 title claims abstract description 34
- 229910001141 Ductile iron Inorganic materials 0.000 title claims abstract description 21
- 239000004576 sand Substances 0.000 title abstract description 41
- 230000003628 erosive effect Effects 0.000 title description 2
- 230000002265 prevention Effects 0.000 title description 2
- 230000000694 effects Effects 0.000 abstract description 6
- 238000005406 washing Methods 0.000 abstract description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 30
- 229910052742 iron Inorganic materials 0.000 description 15
- 238000005266 casting Methods 0.000 description 13
- 238000004519 manufacturing process Methods 0.000 description 11
- 244000035744 Hura crepitans Species 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 230000006872 improvement Effects 0.000 description 5
- 238000003780 insertion Methods 0.000 description 5
- 230000037431 insertion Effects 0.000 description 5
- 239000011449 brick Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003110 molding sand Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
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Abstract
The utility model discloses a large-scale ductile iron sprue bottom sand-scour protection ceramic structure, which comprises a main body formed by splicing a first splicing block and a second splicing block left and right; the main body is provided with a sprue connecting groove and a horizontal sprue connecting groove which are communicated with each other and open at the bottom; a flow guide part is connected to the joint of the sprue connecting groove and the cross-runner connecting groove in the main body, and a flow guide surface which is obliquely arranged with the sprue connecting groove and the cross-runner connecting groove is arranged on the flow guide part; the sprue connecting groove comprises a first splicing groove and a second splicing groove, and the cross runner connecting groove comprises a third splicing groove and a fourth splicing groove; the first splicing groove and the third splicing groove are located on the first splicing block, and the second splicing groove and the fourth splicing groove are located on the second splicing block. The utility model provides a sand scour protection ceramic structure at bottom of large-scale ductile iron sprue, its cooperation is able to reach the effect of preventing pouring sand washing, conveniently demolishs moreover.
Description
Technical Field
The utility model relates to a pour the field, especially relate to a scour protection sand ceramic structure at bottom of large-scale ductile iron sprue.
Background
With the initiation of modern casting technology, the design of parts is larger, and large-tonnage large castings are applied to actual production. The production of large castings requires larger production tools, and the tools are required to have more reliable safety performance. In order to ensure the quality of the casting, the technological parameters such as a sprue, a cross gate, a riser and the like are increased after the casting is large-sized; resin self-hardening sand is mostly used for molding in large casting production, but the strength of a sand mold is limited, and the sand mold is easy to collapse and lose strength after being heated for a long time. When the runner is impacted by external force, particularly the bottom of the sprue, the impact force is extremely large, and loose sand and sand collapse are easily formed. The loose sand and the crushed sand enter the casting along with molten iron to cause the casting to form defects. Of course, the problem caused by the fact that scattered sand and sand bursting slag enter the casting can be avoided by arranging the multi-layer filtering system to filter the impurities of the molten iron, and therefore, more tools including sand boxes, sites, sand consumption, molten iron amount, cranes and the like are required to be invested, so that the production cost is higher, and the efficiency is reduced.
According to the flow direction of molten iron, the action of gravity and production practical experience, the bottom of the sprue is the most main part which is impacted by the molten iron to form loose sand and collapsed sand, and the bottom of the sprue is also the part which is mainly prevented by the casting process. At present, most production processes are as follows: the sprue is made of ceramic tubes, and refractory bricks are placed at a horizontal sprue at the bottom of the sprue. Under normal conditions, such as the strength, compactness, sand feed amount, sand box strength and the like of a sand mold meet the process requirements, the production process can basically solve the quality problem of castings caused by sand washing at the bottom of a sprue. However, since the tooling cost for producing large castings is extremely high, no additional investment into matching flasks is made when producing a single piece. Part of the sand box has reduced strength due to long service time; the sand eating amount of a part of sand boxes is small due to the limited size of the sand boxes, and certain hidden troubles are inevitably caused when the tools are put into production. Particularly, the periphery of the section from the bottom of the ceramic tube sprue to the lower sprue of the sprue is molding sand, so that the impact and heat born by the section are huge, the prepared sand is not tight, the sand and the resin curing agent are locally mixed unevenly due to carelessness in the details of the production process, and molten iron permeates into the sand box wall and burns through the sand box in the pouring process, so that the high-temperature molten iron is leaked laterally, and castings are scrapped and production safety accidents are caused.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a scour protection sand ceramic structure at bottom of large-scale ductile iron sprue, its cooperation is able to reach the effect of preventing pouring sand washing, conveniently demolishs moreover.
In order to realize the purpose, the utility model provides a large-scale ductile iron sprue bottom sand-scour protection ceramic structure, which comprises a main body formed by left and right splicing of a first splicing block and a second splicing block; the main body is provided with a sprue connecting groove and a horizontal sprue connecting groove which are communicated with each other and open at the bottom; a flow guide part is connected to the joint of the sprue connecting groove and the cross-runner connecting groove in the main body, and a flow guide surface which is obliquely arranged with the sprue connecting groove and the cross-runner connecting groove is arranged on the flow guide part; the sprue connecting groove comprises a first splicing groove and a second splicing groove, and the cross runner connecting groove comprises a third splicing groove and a fourth splicing groove; the first splicing groove and the third splicing groove are located on the first splicing block, and the second splicing groove and the fourth splicing groove are located on the second splicing block.
As a further improvement of the utility model, the two horizontal runner connecting grooves are positioned on the same horizontal plane, and each horizontal runner connecting groove is arranged around the straight runner connecting groove; the number and the orientation of the flow guide surfaces on the flow guide part correspond to those of the connecting grooves of the cross runners one by one.
As a further improvement of the present invention, the center line of the flow guiding part is perpendicular to the splicing direction of the first splicing block and the second splicing block; the cross section size of water conservancy diversion portion is from its top to bottom gradually increase.
As a further improvement of the present invention, the bottom of the diversion part is connected to the first splice or the second splice, and the top of the diversion part is a free end.
As a further improvement of the utility model, the flow guiding part comprises a first flow guiding block and a second flow guiding block, the top ends of which are mutually spliced; the bottom end of the first flow guide block is connected with the first splicing block, and the bottom end of the second flow guide block is connected with the second splicing block.
As a further improvement of the present invention, the first splicing block and the second splicing block are spliced and fixed by a splicing structure; the inserting structure comprises an inserting block and an inserting slot which are matched with each other; the inserting block is arranged on one of the first splicing block and the second splicing block, and the slot is arranged on the other splicing block.
Advantageous effects
Compared with the prior art, the utility model discloses a scour protection sand ceramic structure's at bottom of large-scale ductile iron sprue advantage does:
1. this scour protection sand ceramic structure's sprue spread groove is connected with the sprue, and the cross gate spread groove is connected with the cross gate, and the open bottom of cross gate spread groove is detained in resistant firebrick top. The refractory bricks at the sand-impact-prevention ceramic structure and the bottom of the sprue are added with the ceramic tube sprue, so that the bottom of the sprue with the largest impact force is completely covered by a high-temperature-resistant material with high strength, the effect of preventing pouring and sand-flushing can be achieved, and meanwhile, the problem that sand leakage is caused by the fact that the bottom of the sprue is subjected to continuous impact collapse or even infiltration of high-temperature molten iron due to small sand-eating amount and the sand box is burnt and melted can be avoided.
2. The water conservancy diversion face of water conservancy diversion portion can carry out the water conservancy diversion to the cross gate spread groove direction from the molten iron in the sprue entering anti-scouring sand ceramic structure, avoids the molten iron vertical impact on resistant firebrick, has both played the cushioning effect, lets the better distribution of molten iron to each cross gate, has also prolonged resistant firebrick's life simultaneously.
3. After accomplishing that the molten iron is pour and the molten iron solidifies, the molten iron that the part solidifies is located between scour protection sand ceramic structure main part inner wall and the water conservancy diversion portion, if scour protection sand ceramic structure main part formula as an organic whole, is difficult to dismantle. And the scour protection sand ceramic structure main part is controlled by first splice piece and second splice piece and is spliced and form, through controlling first splice piece and second splice piece separately, just can realize easily breaking away from of scour protection sand ceramic structure and pouring material.
4. The first splicing block and the second splicing block are spliced through the insertion block and the slot which are matched with each other, so that certain splicing stability can be ensured, and the two are prevented from being scattered in the pouring process.
The invention will become more apparent from the following description when taken in conjunction with the accompanying drawings which illustrate embodiments of the invention.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a perspective view of a large ductile iron sprue bottom sand impingement ceramic structure of example 1;
FIG. 2 is one of the top views of the sprue bottom sand-strike ceramic structure of the large-sized ductile iron of example 1;
FIG. 3 is a second top view of the sprue bottom sand-impingement ceramic structure of the large-scale ductile iron of example 1;
FIG. 4 is a diagram showing a usage state of a middle-large ductile iron sprue bottom sand-erosion preventing ceramic structure in example 1;
FIG. 5 is a schematic view of a plugging structure in embodiment 1;
FIG. 6 is one of the top views of the large ductile iron sprue bottom sand impingement ceramic constructions of example 2;
FIG. 7 is a second top view of the sprue bottom impingement ceramic structure of large ductile iron of example 2.
Detailed Description
Embodiments of the present invention will now be described with reference to the accompanying drawings.
Example 1
The utility model discloses a concrete implementation is as shown in fig. 1 to fig. 5, a scour protection sand ceramic structure at bottom of large-scale ductile iron sprue, include the main part that forms by the concatenation about first concatenation piece and the second concatenation piece. The main body is provided with a sprue connecting groove 1 and a horizontal sprue connecting groove 2 which are communicated with each other and open at the bottom. The junction that lies in sprue spread groove 1 and cross gate spread groove 2 in the main part is connected with water conservancy diversion portion 3, is equipped with the water conservancy diversion face that all inclines to set up with sprue spread groove 1 and cross gate spread groove 2 on the water conservancy diversion portion 3. The sprue connecting groove 1 includes a first splicing groove 11 and a second splicing groove 12 spliced in the horizontal direction, and the cross-gate connecting groove 2 includes a third splicing groove 21 and a fourth splicing groove 22 spliced in the horizontal direction. The first and third splicing grooves 11, 21 are located on the first splicing block, and the second and fourth splicing grooves 12, 22 are located on the second splicing block.
The horizontal runner connecting grooves 2 are two and located on the same horizontal plane, and each horizontal runner connecting groove 2 is arranged around the sprue connecting groove 1. The number and the orientation of the flow guide surfaces on the flow guide part 3 are in one-to-one correspondence with the connecting grooves 2 of the horizontal pouring channel. In this embodiment, the included angle between the two connecting slots 2 of the horizontal runner is a right angle. The sprue connecting groove 1 is cylindrical, wherein the horizontal cross sections of the first splicing groove 11 and the second splicing groove 12 are both semicircular arcs.
The central line of the flow guide part 3 is perpendicular to the splicing direction of the first splicing block and the second splicing block. The cross-sectional dimension of the flow guide part 3 gradually increases from the top end to the bottom end thereof. The centre line of the flow guide 3 extends horizontally.
In this embodiment, the flow guiding portion 3 includes a first flow guiding block 31 and a second flow guiding block 32 whose top ends are spliced with each other. The bottom end of the first flow guide block 31 is connected with the first splicing block, and the bottom end of the second flow guide block 32 is connected with the second splicing block. When the first and second tiles are spliced, the top ends of the first and second flow guide blocks 31 and 32 contact with each other.
The first splicing block and the second splicing block are spliced and fixed through the splicing structure 4. The plug structure 4 includes a plug block 41 and a socket 42 which are plugged with each other and are in interference fit. The insert 41 is provided on one of the first or second tiles and the slot 42 is provided on the other. In this embodiment, the insertion block 41 is disposed on the edge of the third splicing groove 21 of the first splicing block, and the insertion groove 42 is disposed on the edge of the fourth splicing groove 22 of the second splicing block. The insertion block 41 and the insertion groove 42 may be respectively disposed at the top ends of the second guide block 32 and the first guide block 31.
During the use, this scour protection sand ceramic structure's sprue spread groove 1 is connected with sprue 5, and cross gate spread groove 2 is connected with cross gate 6, and the open bottom of cross gate spread groove 2 is detained 7 tops of nai firebrick. The refractory bricks 7 and the ceramic tube sprue 5 of the scour protection sand ceramic structure and the bottom enable the sprue bottom with the largest impact force to be completely covered by high-temperature-resistant materials with high strength, so that the effect of preventing pouring and sand washing can be achieved, and meanwhile, the sprue bottom can be prevented from being broken by continuous impact of high-temperature molten iron due to small sand eating amount and even permeating into the inner wall of a sand box and melting the sand box to cause sand leakage and huge loss.
Example 2
As shown in fig. 6 and 7, the difference from the embodiment 1 is that the two runner connecting grooves 2 are oppositely oriented and form an angle of 180 ° therebetween.
In the above embodiment, the flow guiding portion 3 may also be an integral structure, the bottom end of the flow guiding portion is connected to the inner wall of the first splicing block of the main body, and the top end of the flow guiding portion 3 is a free end and contacts with the inner wall of the second splicing block. The number of the runner connecting grooves 2 may be one.
The present invention has been described above with reference to the preferred embodiments, but the present invention is not limited to the above-disclosed embodiments, and various modifications, equivalent combinations, which are made according to the essence of the present invention, should be covered.
Claims (6)
1. A sand-scour protection ceramic structure at the bottom of a large ductile iron sprue gate is characterized by comprising a main body formed by left and right splicing of a first splicing block and a second splicing block; a sprue connecting groove (1) and a horizontal sprue connecting groove (2) with an open bottom are arranged on the main body and communicated with each other; a flow guide part (3) is connected to the joint of the sprue connecting groove (1) and the cross sprue connecting groove (2) in the main body, and flow guide surfaces which are obliquely arranged with the sprue connecting groove (1) and the cross sprue connecting groove (2) are arranged on the flow guide part (3); the sprue connecting groove (1) comprises a first splicing groove (11) and a second splicing groove (12), and the cross runner connecting groove (2) comprises a third splicing groove (21) and a fourth splicing groove (22); the first splicing groove (11) and the third splicing groove (21) are positioned on the first splicing block, and the second splicing groove (12) and the fourth splicing groove (22) are positioned on the second splicing block.
2. The sprue bottom sand-control ceramic structure for the large-scale ductile iron according to claim 1, wherein the two runner connecting grooves (2) are positioned on the same horizontal plane, and each runner connecting groove (2) is arranged around the sprue connecting groove (1); the number of the flow guide surfaces on the flow guide part (3) corresponds to that of the cross gate connecting grooves (2) one by one.
3. The large-sized ductile iron sprue bottom sand-control ceramic structure according to claim 1, wherein the center line of the flow guide portion (3) is perpendicular to the splicing direction of the first and second splicing blocks; the cross section size of the flow guide part (3) is gradually increased from the top end to the bottom end.
4. The large-scale ductile iron sprue bottom sand-control ceramic structure according to claim 3, wherein the bottom end of the flow guide part (3) is connected with the first or second splicing block, and the top end of the flow guide part (3) is a free end.
5. The large-scale ductile iron sprue bottom sand-control ceramic structure according to claim 3, wherein the flow guide part (3) comprises a first flow guide block (31) and a second flow guide block (32) which are spliced with each other at top ends thereof; the bottom end of the first flow guide block (31) is connected with the first splicing block, and the bottom end of the second flow guide block (32) is connected with the second splicing block.
6. The large-scale ductile iron sprue bottom sand-control ceramic structure according to claim 1, wherein the first splicing block and the second splicing block are spliced and fixed through a splicing structure (4); the inserting structure (4) comprises an inserting block (41) and an inserting groove (42) which are matched with each other; the insert block (41) is arranged on one of the first splicing block or the second splicing block, and the slot (42) is arranged on the other splicing block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921935221.2U CN210877416U (en) | 2019-11-11 | 2019-11-11 | Sand erosion prevention ceramic structure at bottom of large-scale ductile iron sprue |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921935221.2U CN210877416U (en) | 2019-11-11 | 2019-11-11 | Sand erosion prevention ceramic structure at bottom of large-scale ductile iron sprue |
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| Publication Number | Publication Date |
|---|---|
| CN210877416U true CN210877416U (en) | 2020-06-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921935221.2U Expired - Fee Related CN210877416U (en) | 2019-11-11 | 2019-11-11 | Sand erosion prevention ceramic structure at bottom of large-scale ductile iron sprue |
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| Country | Link |
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| CN (1) | CN210877416U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112570671A (en) * | 2020-12-04 | 2021-03-30 | 成都先进金属材料产业技术研究院有限公司 | Die casting pouring device |
-
2019
- 2019-11-11 CN CN201921935221.2U patent/CN210877416U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112570671A (en) * | 2020-12-04 | 2021-03-30 | 成都先进金属材料产业技术研究院有限公司 | Die casting pouring device |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200630 |
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| CF01 | Termination of patent right due to non-payment of annual fee |