CN219746299U - Improve mould structure of local metallographic structure of support - Google Patents
Improve mould structure of local metallographic structure of support Download PDFInfo
- Publication number
- CN219746299U CN219746299U CN202320335782.9U CN202320335782U CN219746299U CN 219746299 U CN219746299 U CN 219746299U CN 202320335782 U CN202320335782 U CN 202320335782U CN 219746299 U CN219746299 U CN 219746299U
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- casting
- casting cavity
- heat
- pour point
- point depressing
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- 238000005266 casting Methods 0.000 claims abstract description 68
- 230000000881 depressing effect Effects 0.000 claims abstract description 17
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 22
- 229910052742 iron Inorganic materials 0.000 abstract description 11
- 238000004321 preservation Methods 0.000 abstract description 7
- 229910001562 pearlite Inorganic materials 0.000 abstract description 6
- 230000015572 biosynthetic process Effects 0.000 abstract description 2
- 239000003110 molding sand Substances 0.000 abstract description 2
- 238000007711 solidification Methods 0.000 abstract description 2
- 230000008023 solidification Effects 0.000 abstract description 2
- 229910000831 Steel Inorganic materials 0.000 description 13
- 239000010959 steel Substances 0.000 description 13
- 238000000034 method Methods 0.000 description 8
- 230000007547 defect Effects 0.000 description 5
- 244000035744 Hura crepitans Species 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- 238000009749 continuous casting Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000010960 cold rolled steel Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Landscapes
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The utility model discloses a mould structure for improving a partial metallographic structure of a bracket, which comprises a mould plate, wherein the mould plate is provided with a pouring cup, a cross runner, a casting head and a casting cavity which are communicated in sequence; the mould template is also provided with a heat-preserving pour point depressing casting cavity which is communicated with the casting cavity, and the position of the heat-preserving pour point depressing casting cavity is positioned around the thinness space of the casting cavity. The heat-preservation pour point depressing casting cavity is far away from the casting head. According to the utility model, the heat-preservation pour point depressing casting cavity is added at the casting space position of the bracket beam, the initial molten iron reaching the beam position enters the heat-preservation pour point depressing casting cavity, and the part of molten iron can heat molding sand near the beam position, so that the temperature of the molten iron finally forming the bracket beam is relatively higher, the solidification speed of the molten iron is slower, and the formation of pearlite at the bracket beam position is favorably inhibited.
Description
Technical Field
The utility model relates to the technical field of casting modeling, in particular to a die structure for improving a partial metallographic structure of a bracket.
Background
The bracket of the automobile brake system is an important safety part of an automobile, so that the requirement on the metallographic structure of the bracket is higher, and the pearlite structure content of the bracket is less than or equal to 55 percent in order to ensure the mechanical property of the bracket. Because the wall thickness of the bracket beam is thinner and is generally far away from the casting head, how to ensure that the pearlite content of the bracket beam is qualified becomes a great difficulty in casting production.
Publication (bulletin) number: CN112475230a, publication (date): 2021-03-12 discloses a V-method casting system for solving the problem of air holes by using an overflow riser, which comprises a casting system and the overflow riser, wherein the casting system comprises at least two inner runners, the overflow riser is arranged at the junction of molten steel at the front edge of the far end of a casting mould and is used for collecting the molten steel at the front edge mixed with impurities and gas, ensuring that clean molten steel is reserved in a casting body and avoiding air hole defects. According to the utility model, by means of the directional design of the molten steel flow field in the casting and pouring process of the V method, the strain relief is arranged at the front edge molten steel junction of the far end of the casting mould, so that the front edge molten steel mixed with impurities and gas can be collected, the clean molten steel is ensured to be stored in the casting body, the defect of air holes is avoided, and the front edge molten steel involved in the casting process, gas generated by the core, the coating and the film and impurities can be collected in the strain relief, and the phenomenon that the front edge molten steel is sealed and stored in the casting to generate air holes is avoided. The defect of air holes of the V-method casting is greatly reduced, the product percent of pass is improved, the production efficiency is improved, and the method has practical value.
Publication (bulletin) number: CN209681145U, publication (date): 2019-11-26 relates to a quantitative ladle overflow device, which comprises a quantitative ladle connected to a sand box, an upper sand mold internal connection cavity arranged on the sand box, an external riser, and an overflow iron storage groove arranged on the upper sand mold, wherein the riser is communicated with the overflow iron storage groove through an overflow channel. The novel casting device is simple in structure, can effectively collect and store the molten iron allowance of the riser, avoids overflow to the outside of the sand mould and the sand box, and is beneficial to improving casting efficiency and prolonging the service life of the sand box.
Publication (bulletin) number: CN110035844B, publication (date): 2021-04-13 provides a continuous casting technique that can stably and remarkably reduce surface defects in a cold-rolled steel sheet caused by the incorporation of foreign matters into a solidified shell. A continuous casting method of steel, wherein molten steel is discharged from a discharge hole 31 of a submerged nozzle 30 into a mold under the following conditions (A) and (B), and electromagnetic stirring (EMS) is performed in molten steel in a depth region where the thickness of a solidified shell at least in the center in the longitudinal direction is 5 to 10mm, so that long-side flows in opposite directions to each other are generated on both long-side sides. (A) The discharge extension line 52 from the dipping nozzle discharge hole 31 intersects with the metal liquid surface 41 in the mold at a point P, the position of which satisfies the condition 0.15.ltoreq.M/W.ltoreq.0.45. And (B) satisfies the condition that L-0.17 Vi-350 is not less than 0. Here, L is in mm, and Vi is the discharge velocity (mm/s) of the molten steel at the outlet opening 32.
However, the above technology is completely different from the structure and principle of the present utility model, and the technical problems to be solved and the beneficial effects to be achieved are also different.
Disclosure of Invention
Aiming at the defects existing in the prior art, the utility model aims to provide a mould structure for improving the local metallographic structure of a bracket, and the pearlite structure at the position of a bracket cross beam of an automobile brake system is better ensured to meet the technical requirements of products by changing the mould process.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
the mold structure for improving the partial metallographic structure of the bracket comprises a mold plate, wherein the mold plate is provided with a pouring cup, a cross runner, a casting head and a casting cavity which are communicated in sequence;
the mould template is also provided with a heat-preserving pour point depressing casting cavity which is communicated with the casting cavity, and the position of the heat-preserving pour point depressing casting cavity is positioned around the thinness space of the casting cavity.
The heat-preservation pour point depressing casting cavity is far away from the casting head.
And the casting to be cast in the casting cavity is an automobile brake system bracket.
Compared with the prior art, the utility model has the following beneficial effects:
according to the utility model, the heat-preservation pour point depressing casting cavity is added at the casting space position of the bracket beam, the initial molten iron reaching the beam position enters the heat-preservation pour point depressing casting cavity, and the part of molten iron can heat molding sand near the beam position, so that the temperature of the molten iron finally forming the bracket beam is relatively higher, the solidification speed of the molten iron is slower, and the formation of pearlite at the bracket beam position is favorably inhibited.
Drawings
Fig. 1 is a longitudinal sectional view of a mold structure for improving a partial metallographic structure of a stent according to the present utility model.
Legend description:
1. a mold plate; 2. a pouring cup; 3. a cross gate; 4. casting head; 5. preserving heat and reducing pour point of the casting cavity; 6. and casting a space in the bracket beam.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1, the present utility model provides an embodiment 1: the mold structure for improving the partial metallographic structure of the bracket comprises a mold plate 1, wherein the mold plate is provided with a pouring cup 2, a cross runner 3, a casting head 4 and a casting cavity which are communicated in sequence;
the mould template is also provided with a heat-preserving pour point depressing casting cavity 5 which is communicated with the casting cavity, and the position of the heat-preserving pour point depressing casting cavity is positioned around the thinness space of the casting cavity.
The heat-preservation pour point depressing casting cavity is far away from the casting head.
Taking a QT450 material automobile brake system support as an example, the casting to be cast in the casting cavity is the automobile brake system support. The bracket beam is positioned away from the casting head. The communicated heat-preserving pour point depressing casting cavity is arranged at the periphery of the casting space 6 (the thinnest part of the casting) of the bracket beam, so that the qualification of pearlite tissue content at the bracket beam can be effectively ensured.
The parts themselves which are not discussed in the utility model and the connection modes of the parts in the utility model all belong to the known technology in the technical field. The preparation can be directly applied and is not repeated.
In the present utility model, the term "plurality" means two or more, unless explicitly defined otherwise. The terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; "coupled" may be directly coupled or indirectly coupled through intermediaries. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
In the description of the present utility model, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "front", "rear", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or units referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present utility model.
In the description of the present specification, the terms "one embodiment," "some embodiments," "particular embodiments," and the like, mean 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 present utility model. In this specification, schematic representations of the above terms 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 of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (3)
1. The mold structure for improving the partial metallographic structure of the bracket comprises a mold plate, wherein the mold plate is provided with a pouring cup, a cross runner, a casting head and a casting cavity which are communicated in sequence;
the casting mold is characterized in that the mold plate is also provided with a heat-preserving pour point depressing casting cavity which is communicated with the casting cavity, and the position of the heat-preserving pour point depressing casting cavity is positioned around the thinness space of the casting cavity.
2. The mold structure for improving the local metallographic structure of a support according to claim 1, wherein the heat-preserving pour point depressing casting cavity is located away from the casting head.
3. The mold structure for improving the local metallographic structure of a bracket according to claim 2, wherein the casting to be cast in the casting cavity is an automobile brake system bracket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320335782.9U CN219746299U (en) | 2023-02-28 | 2023-02-28 | Improve mould structure of local metallographic structure of support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320335782.9U CN219746299U (en) | 2023-02-28 | 2023-02-28 | Improve mould structure of local metallographic structure of support |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219746299U true CN219746299U (en) | 2023-09-26 |
Family
ID=88071427
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320335782.9U Active CN219746299U (en) | 2023-02-28 | 2023-02-28 | Improve mould structure of local metallographic structure of support |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219746299U (en) |
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2023
- 2023-02-28 CN CN202320335782.9U patent/CN219746299U/en active Active
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