CN215746267U - Novel riser feeding structure for producing heavy truck hub castings - Google Patents
Novel riser feeding structure for producing heavy truck hub castings Download PDFInfo
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- CN215746267U CN215746267U CN202121917129.0U CN202121917129U CN215746267U CN 215746267 U CN215746267 U CN 215746267U CN 202121917129 U CN202121917129 U CN 202121917129U CN 215746267 U CN215746267 U CN 215746267U
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- riser
- neck
- heavy truck
- sand core
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- 238000005266 casting Methods 0.000 title claims abstract description 26
- 238000004321 preservation Methods 0.000 claims abstract description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 12
- 238000000034 method Methods 0.000 abstract description 8
- 238000001816 cooling Methods 0.000 abstract description 6
- 229910052742 iron Inorganic materials 0.000 abstract description 6
- 239000007788 liquid Substances 0.000 abstract description 6
- 238000007711 solidification Methods 0.000 description 6
- 230000008023 solidification Effects 0.000 description 6
- 230000007547 defect Effects 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 229910001141 Ductile iron Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 235000011837 pasties Nutrition 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The utility model discloses a novel riser feeding structure for producing a heavy truck hub casting, which comprises a sand core, wherein a riser is arranged in the sand core; also comprises a heat-preservation cap and a riser neck; a riser neck is further formed in the sand core, the riser neck is a conical channel, a large opening is communicated with a riser, a small opening is communicated with a die cavity, and the position where the small opening of the riser neck is communicated with the die cavity is a position where a casting in the die cavity is easy to form a hot spot; the heat-insulating riser cover covers the upper port of the riser. The molten iron in the riser can be in a liquid state for a long time, the feeding distance of the riser in the hub is greatly shortened, the riser can effectively feed a hot spot part in the casting cooling process, and the problem of difficulty in feeding the hot spot of heavy truck hub products is solved.
Description
Technical Field
The utility model relates to the technical field of casting heavy truck hub castings, in particular to a novel riser feeding structure for producing heavy truck hub castings.
Background
The cast heavy truck hub is generally made of common ductile iron, and the overall structure of the hub has the characteristics of thin edge and thick middle. The molten ductile iron has poor fluidity, a wide liquid-solid coexisting region exists on the fracture surface in the solidification process, and the solidification mode has the characteristic of pasty solidification. The riser at the edge is far away from the hot junction and is cooled quickly, so that the middle hot junction part is difficult to be effectively fed, and the feeding change in the nodular graphite wheel hub solidification process is difficult.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the utility model aims to provide a novel riser feeding structure for producing heavy truck hub castings, molten iron in a riser can be in a liquid state for a long time, the feeding distance of the riser in a hub is also greatly shortened, the riser can effectively feed a hot spot part in the casting cooling process, and the problem of difficulty in feeding the hot spots of heavy truck hub products is solved.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a novel riser feeding structure for producing heavy truck hub castings comprises a sand core, wherein risers are arranged in the sand core;
also comprises a heat-preservation cap and a riser neck;
a riser neck is further formed in the sand core, the riser neck is a conical channel, a large opening is communicated with a riser, a small opening is communicated with a die cavity, and the position where the small opening of the riser neck is communicated with the die cavity is a position where a casting in the die cavity is easy to form a hot spot;
the heat-insulating riser cover covers the upper port of the riser.
Further, the bottom end of the riser is of a spherical cavity structure, so that a riser pit is formed.
Further, the lowermost end of the spherical cavity structure is located at a position lower than the lowermost end of the riser neck.
Compared with the prior art, the utility model has the following beneficial effects:
through design the riser body, riser nest, riser neck in the sand core in the middle of the wheel hub, cooperation top heat preservation riser gauze mask makes riser heat loss be slower than the thermal loss of foundry goods like this, and the intraoral molten iron of riser can be in the liquid for a long time, and the riser lies in the wheel hub feeding distance and also shortens greatly moreover, makes the riser can effectual feeding heat festival position in foundry goods cooling process, has compensatied the problem of heavy truck wheel hub class product heat festival feeding difficulty. When the molten iron is filled, the casting begins to be changed from liquid state to solid state, and because the riser in the middle of the hub is slower in solidification speed than the casting in the mold cavity under the influence of the heat preservation riser mask and the sand core, the riser can effectively feed the hot spot part in the casting cooling process, thereby eliminating the defects of shrinkage cavity and shrinkage porosity.
Drawings
Fig. 1 is a schematic view of a novel riser feeding structure for producing heavy truck hub castings according to the present invention.
In the figure: a riser 1; a heat preservation cap 2; a sand core 3; a casting 4; a hot junction 5; a riser neck 6.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, the present invention provides a technical solution:
a novel riser feeding structure for producing heavy truck hub castings comprises a sand core 3, wherein risers 1 are arranged in the sand core;
also comprises a heat preservation cap 2 and a riser neck 6;
a riser neck is further formed in the sand core, the riser neck is a conical channel, a large opening is communicated with a riser, a small opening is communicated with a die cavity, and the position where the small opening of the riser neck is communicated with the die cavity is a position where a casting 4 in the die cavity is easy to form a hot spot 5;
the heat-insulating riser cover covers the upper port of the riser.
Further, the bottom end of the riser is of a spherical cavity structure, so that a riser pit is formed.
Further, the lowermost end of the spherical cavity structure is located at a position lower than the lowermost end of the riser neck.
Through design the riser body, riser nest, riser neck in the sand core in the middle of the wheel hub, cooperation top heat preservation riser gauze mask makes riser heat loss be slower than the thermal loss of foundry goods like this, and the intraoral molten iron of riser can be in the liquid for a long time, and the riser lies in the wheel hub feeding distance and also shortens greatly moreover, makes the riser can effectual feeding heat festival position in foundry goods cooling process, has compensatied the problem of heavy truck wheel hub class product heat festival feeding difficulty.
The solution is as follows: when the molten iron is filled, the casting begins to be changed from liquid state to solid state, and because the riser 1 in the middle of the hub is influenced by the heat preservation riser mask 2 and the sand core 3, the solidification speed is slower than that of the casting 4 in the mold cavity, the riser 1 can effectively feed the hot spot part 5 in the casting cooling process, so that the defects of shrinkage cavity and shrinkage porosity are eliminated.
All parts and parts which are not discussed in the present application and the connection mode of all parts and parts in the present application belong to the known technology in the technical field, and are not described again. Such as welding, threaded connections, etc.
In the present invention, the term "plurality" means two or more unless explicitly defined otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "front", "rear", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or unit must have a specific direction, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (3)
1. A novel riser feeding structure for producing heavy truck hub castings comprises a sand core, wherein risers are arranged in the sand core;
it is characterized by also comprising a heat-preservation cap and a riser neck;
a riser neck is further formed in the sand core, the riser neck is a conical channel, a large opening is communicated with a riser, a small opening is communicated with a die cavity, and the position where the small opening of the riser neck is communicated with the die cavity is a position where a casting in the die cavity is easy to form a hot spot;
the heat-insulating riser cover covers the upper port of the riser.
2. The novel riser feeding structure for producing heavy truck hub castings according to claim 1, wherein the bottom end of the riser is a spherical cavity structure forming a riser nest.
3. The novel riser feeding structure for producing heavy truck hub castings according to claim 2, wherein the lowest end of the spherical cavity structure is located at a position lower than the lowest end of the riser neck.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121917129.0U CN215746267U (en) | 2021-08-16 | 2021-08-16 | Novel riser feeding structure for producing heavy truck hub castings |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121917129.0U CN215746267U (en) | 2021-08-16 | 2021-08-16 | Novel riser feeding structure for producing heavy truck hub castings |
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| Publication Number | Publication Date |
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| CN215746267U true CN215746267U (en) | 2022-02-08 |
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| CN202121917129.0U Active CN215746267U (en) | 2021-08-16 | 2021-08-16 | Novel riser feeding structure for producing heavy truck hub castings |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114535509A (en) * | 2022-02-22 | 2022-05-27 | 株洲九方铸造股份有限公司 | Slant rising head feeding system |
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2021
- 2021-08-16 CN CN202121917129.0U patent/CN215746267U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114535509A (en) * | 2022-02-22 | 2022-05-27 | 株洲九方铸造股份有限公司 | Slant rising head feeding system |
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