CN113333681A - Assembled serial multi-box pouring system - Google Patents
Assembled serial multi-box pouring system Download PDFInfo
- Publication number
- CN113333681A CN113333681A CN202110712411.3A CN202110712411A CN113333681A CN 113333681 A CN113333681 A CN 113333681A CN 202110712411 A CN202110712411 A CN 202110712411A CN 113333681 A CN113333681 A CN 113333681A
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- Prior art keywords
- pouring
- longitudinal
- gate
- pouring gate
- channel
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Links
- 238000005266 casting Methods 0.000 claims abstract description 36
- 239000004576 sand Substances 0.000 claims abstract description 6
- 238000000465 moulding Methods 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 76
- 229910052742 iron Inorganic materials 0.000 abstract description 38
- 239000002699 waste material Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 description 12
- 230000008569 process Effects 0.000 description 9
- 244000035744 Hura crepitans Species 0.000 description 6
- 239000010410 layer Substances 0.000 description 6
- 238000005452 bending Methods 0.000 description 5
- 239000002893 slag Substances 0.000 description 5
- 230000007547 defect Effects 0.000 description 4
- 239000012535 impurity Substances 0.000 description 4
- 229910001141 Ductile iron Inorganic materials 0.000 description 3
- 230000009471 action Effects 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 238000011081 inoculation Methods 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 241000519995 Stachys sylvatica Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000005058 metal casting Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/08—Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
- B22C9/082—Sprues, pouring cups
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/08—Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
- B22C9/088—Feeder heads
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/20—Stack moulds, i.e. arrangement of multiple moulds or flasks
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The invention discloses an assembled serial multi-box gating system; the system comprises a U-shaped pouring channel and a transverse pouring channel; the U-shaped pouring gate consists of a bottom pouring gate and longitudinal pouring gates arranged at two ends of the bottom pouring gate; the ports of the two longitudinal pouring channels respectively form an outer pouring gate and a riser, and an inclined pouring channel which is obliquely and upwardly distributed from the longitudinal pouring channel where the outer pouring gate is located to the longitudinal pouring channel where the riser is located is arranged between the two longitudinal pouring channels; a plurality of transverse pouring channels are longitudinally distributed at intervals and are communicated with the outer sides of the longitudinal pouring channels where the risers are located; the bottom of the transverse pouring gate is provided with a plurality of inner pouring gates which are connected with a casting cavity of the sand mold; the invention effectively solves the problems of spheroidization recession, molten iron waste, inconsistent casting quality and the like of the traditional single-box pouring system and the traditional multi-box pouring system.
Description
Technical Field
The invention belongs to the technical field of metal casting pouring, and particularly relates to an assembled tandem type multi-box pouring system.
Background
In a traditional casting processing mode, a plurality of workpieces are cast in a sand box, or one workpiece is cast corresponding to one sand box, and a casting ladle sequentially casts molten iron one by one aiming at each sand box.
Taking the single-box pouring process as an example, a plurality of boxes of castings are poured, a crane is needed to move a pouring ladle for a plurality of times during pouring, and the pouring ladle needs to be rotated twice when one box of sand mold is poured. These links cause that the pouring time is too long, easily cause spheroidal graphite cast iron spheroidization recession, molten iron inoculation failure, cause product white cast, large molten iron cooling amplitude and other adverse process factors, and increase the tendency of uneven products in the same batch.
The traditional multi-box series pouring is characterized in that the drop of molten iron is large, when the molten iron flows to the bottom through a pouring gate, the molten iron is too fast, turbulence is easy to generate, the local impact molding defect of a casting is easy to cause, the impact molding of the casting is not facilitated, and impurities are easy to wash into the casting to generate macroscopic defects such as slag inclusion and the like. Therefore, the traditional tandem pouring method is only used for casting spheres, cylinders and prisms with the shapes being more regular and below 30 kg. For medium-sized castings with complex structures and heavy weight, the traditional tandem type pouring method cannot ensure the quality of workpieces.
Disclosure of Invention
The invention aims to provide an assembled serial multi-box casting system, which is used for solving the problems that the existing casting system cannot ensure the quality of a cast product and the integral quality of batch products is stable.
In order to achieve the purpose, the invention adopts the technical scheme that:
an assemblable in-line multi-box gating system comprising:
the U-shaped pouring gate consists of a bottom pouring gate and longitudinal pouring gates arranged at two ends of the bottom pouring gate; the ports of the two longitudinal pouring channels respectively form an outer pouring gate and a riser, and an inclined pouring channel which is obliquely and upwardly distributed from the longitudinal pouring channel where the outer pouring gate is located to the longitudinal pouring channel where the riser is located is arranged between the two longitudinal pouring channels; and
the transverse pouring gates are longitudinally distributed at intervals and are communicated with one side of the longitudinal pouring gate where the risers are located; and a plurality of inner gates are arranged at the bottom of the transverse pouring gate and are connected with a casting cavity of the sand mold.
Furthermore, the longitudinal pouring channel where the riser is located in the middle of the transverse pouring channel.
Furthermore, the longitudinal pouring channels and the transverse pouring channels are layered and molded in a single-layer sand box during molding, and finally, the complete multi-box pouring system is formed by stacking and combining a plurality of layers of sand boxes.
Further, the bottom runner is straight and located outside the lower cross runner.
Furthermore, 3-5 layers of transverse pouring channels are longitudinally distributed according to production requirements, the oblique pouring channels are positioned between the uppermost layer and one layer of transverse pouring channels below the uppermost layer counted from bottom to top, and when the distribution number of the transverse pouring channels is more than three, one oblique pouring channel is correspondingly and additionally distributed when one transverse pouring channel is added.
The invention has the beneficial effects that:
1. the matching mode of the U-shaped pouring channel and the transverse pouring channel has a molten iron buffering function, molten iron enters the transverse pouring channel through the bottom pouring channel at a constant speed, and the defect of impurity inclusion caused by the fact that impurities in the molten iron are drawn into a cavity due to turbulent flow caused by high flow speed and non-uniform speed of the molten iron is avoided. Meanwhile, molten iron runs in the transverse pouring channel at a constant speed after being decelerated, and because the density of impurities such as molten iron slag is lower than that of the molten iron, the molten slag mixed in the molten iron can float at the top end of the transverse pouring channel in the running process, and pure molten iron enters the cavity from the inner sprue below the transverse pouring channel to perform casting molding, so that the casting molding device has the effect of comb-shaped slag.
2. The tandem type pouring system disclosed by the invention has the advantages that a plurality of boxes of products are poured at one time, a crown block does not need to be moved for a plurality of times, pouring of a plurality of products can be completed only by rotating a pouring ladle for two times in the pouring process, the pouring time is obviously shortened, the pouring efficiency is high, and the defects of ductile cast iron spheroidization decline, product white spots, inconsistent casting quality and the like can be effectively avoided; meanwhile, a plurality of boxes are in tandem type pouring, and share one feeding system, so that the number of pouring gates and risers of a pouring system is reduced, the molten iron consumption of a single product is reduced, the process yield of the product is increased, and the effect of reducing energy consumption is achieved.
3. The tandem type multi-box gating system can ensure the quality of castings through structural improvement. The method can also be used for the serial multi-box pouring of workpieces with the weight of 30kg-200kg and castings with more complex structures.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic view of another structure according to the present invention.
Wherein: 1-U-shaped pouring channel; 2-transverse pouring channel; 3-bottom pouring channel; 4-longitudinal pouring channel; 5-outer gate; 6-riser; 7-inclined pouring channel; 8-inner gate.
Detailed Description
The preferred embodiments of the present invention will be described below with reference to the accompanying drawings;
as shown in fig. 1 and 2, an assembled in-line multi-box gating system; the system comprises a U-shaped pouring channel 1 and a transverse pouring channel 2; the U-shaped pouring gate 1 is used for pouring molten iron, and the transverse pouring gate 2 is matched with the U-shaped pouring gate 1 to pour the casting cavity.
The U-shaped pouring gate 1 consists of a bottom pouring gate 3 and longitudinal pouring gates 4 arranged at two ends of the bottom pouring gate 3, and the U-shaped pouring gate 1 is integrally U-shaped; the two longitudinal pouring channels 4 are in a circular tube shape and are arranged in parallel at intervals, the top end of one longitudinal pouring channel 4 is provided with a cylindrical interface with a larger diameter, the interface forms an outer pouring gate 5, and the top end of the other longitudinal pouring channel is provided with a conical interface and forms a riser 6; the bottom end pouring gate 3 is straight and is integrally rectangular and cylindrical, the structure design is favorable for realizing the flow blocking effect, and the two longitudinal pouring gates 4 are connected to the two ends of the bottom end pouring gate 3, so that two right-angle bending areas can be formed; longitudinal pouring gate 4 and bottom end pouring gate 3 have right-angle-shaped bending regions in structural design, and when molten iron is poured into U-shaped pouring gate 1, the two bending regions have a flow blocking effect, so that the flow velocity of the molten iron can be reduced. An inclined pouring channel 7 which is obliquely distributed upwards from the longitudinal pouring channel 4 where the outer pouring gate 5 is positioned to the longitudinal pouring channel 4 where the riser 6 is positioned is arranged between the two longitudinal pouring channels 4; the inclined pouring gate 7 is used for pouring molten iron and promoting the discharge of air in the sand mold cavity after the overall height of the U-shaped pouring gate 1 is increased; when molten iron is submerged in the inclined pouring gate 7, the inclined pouring gate 7 can be used for promoting the molten iron to circulate through the inclined pouring gate 7, and the buffer function and the flow guiding function are achieved.
A plurality of transverse pouring channels 2 are longitudinally distributed at intervals and are communicated with one side of the longitudinal pouring channel 4 where the riser 6 is positioned; the transverse pouring channels 2 can be arranged in 3-5 layers according to the height of a workpiece, and the inclined pouring channel 7 is positioned between the second transverse pouring channel and the third transverse pouring channel 2 counted from bottom to top; when the arrangement number of the cross pouring channels 2 is more than three, one inclined pouring channel 7 is correspondingly and additionally arranged when one cross pouring channel 2 is added. The bottom of the transverse pouring gate 2 is provided with a plurality of inner pouring gates 8, and the inner pouring gates 8 are connected with a casting cavity of a sand mold.
In order to shorten the path of molten iron flowing into the casting cavity on each transverse pouring channel, the longitudinal pouring channel where the riser 6 is located is arranged in the middle of the transverse pouring channel 2, so that the molten iron flows from the transverse pouring channel 2 to two sides and enters the casting cavity, the casting time can be shortened, and the consistency of the quality of products in the same batch can be ensured.
In order to further reduce the influence of turbulent flow on the product quality, the bottom end pouring gate 3 can be arranged on the outer side of the lower lateral pouring gate 2, a bending area is added at the joint of the longitudinal pouring gate 4 where the riser 6 is located and the lateral pouring gate 2, and the functions of flow resistance and speed reduction are further realized, so that the molten iron flows smoothly and stably.
The working process and principle of the invention are as follows:
the crane moves the casting ladle to the position above the U-shaped pouring gate 1, and molten iron is poured in through the outer pouring gate 5; molten iron is filled in the U-shaped pouring gate 1, the molten iron preferentially flows into the lowest transverse pouring gate 2 under the flow blocking and reversing actions of two bending areas at the bottom end of the U-shaped pouring gate 1, and the molten iron enters a casting cavity through the inner pouring gate 8 under the shunting action of the transverse pouring gate 2; and after the lower horizontal pouring gate 2 is filled with molten iron, the upper horizontal pouring gate 2 is continuously poured one by one. The U-shaped pouring gate 1 reduces the flow velocity of molten iron, so that the molten iron in the transverse pouring gate 2 is stably and smoothly distributed, the adverse effect of turbulent flow on the product quality can be avoided, and the incomplete punching of the casting can be prevented; under the shunting action of molten iron, inclusions and the like float on the upper surface of the transverse pouring channel, so that the slag and the inclusions are effectively prevented from entering the casting due to turbulent flow scouring, and the slag-grating function is realized; molten iron is evenly distributed from the transverse pouring gate 2 to two sides, and the whole casting process is favorable for shortening the time. The spheroidization rate and the grade of the spherical diameter of the nodular cast iron are closely related to the mechanical property of the product, so that the casting time is reduced, the spheroidization recession is effectively prevented, and the spheroidization rate and the grade of the spherical diameter of the product can be effectively improved; meanwhile, the pouring time is reduced, inoculation recession can be effectively prevented, the white cast tendency of a product is reduced, and the influence of a white cast structure on the machining performance of a casting is prevented; the temperature of molten iron is reduced little in the pouring process of the serial multi-box pouring system, and the tapping temperature (20-30 ℃) can be reduced, so that the energy consumption of products is reduced; in order to prevent the shrinkage of the casting in the solidification process, risers are required to be placed for feeding the casting in the casting pouring mode, the risers are required to be added to each casting box in the single-box pouring mode, the U-shaped pouring gate 1 is utilized by the serial multi-box pouring system, the overall height of the sand box is increased, the molten iron pressure is increased, the molten iron compensation in the product punching compaction and cooling processes is facilitated, and the shrinkage porosity of the casting is effectively prevented.
Claims (5)
1. An assemblable in-line multi-box gating system, comprising:
the U-shaped pouring gate consists of a bottom pouring gate and longitudinal pouring gates arranged at two ends of the bottom pouring gate; the ports of the two longitudinal pouring channels respectively form an outer pouring gate and a riser, and an inclined pouring channel which is obliquely and upwardly distributed from the longitudinal pouring channel where the outer pouring gate is located to the longitudinal pouring channel where the riser is located is arranged between the two longitudinal pouring channels; and
the transverse pouring gates are distributed at intervals along the longitudinal direction of the U-shaped pouring gate 1 and are communicated with one side of the longitudinal pouring gate where the riser is located; and a plurality of inner gates are arranged at the bottom of the transverse pouring gate and are connected with a casting cavity of the sand mold.
2. An assemblable in-line multi-box gating system as claimed in claim 1, wherein the longitudinal runner in which the risers are located is located in the middle of the transverse runner.
3. The assemblable in-line multi-flask gating system of claim 2, wherein the longitudinal runners are layered together with the cross runners during molding in single-flask flasks, and the complete multi-flask gating system is finally formed by stacking and assembling the multiple-flask flasks.
4. An assemblable in-line multi-box gating system as in claim 2, wherein the bottom end runner is flat and located below the outside of the lower cross runner.
5. The system of any one of claims 1 to 4, wherein the cross runners are arranged in 3-5 layers longitudinally according to production requirements, the cross runners are arranged between the uppermost layer and the layer of cross runners below the uppermost layer from bottom to top, and when the number of the cross runners is more than three, one cross runner is additionally arranged for each increase.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110712411.3A CN113333681A (en) | 2021-06-25 | 2021-06-25 | Assembled serial multi-box pouring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110712411.3A CN113333681A (en) | 2021-06-25 | 2021-06-25 | Assembled serial multi-box pouring system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113333681A true CN113333681A (en) | 2021-09-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110712411.3A Pending CN113333681A (en) | 2021-06-25 | 2021-06-25 | Assembled serial multi-box pouring system |
Country Status (1)
| Country | Link |
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| CN (1) | CN113333681A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114178480A (en) * | 2021-12-08 | 2022-03-15 | 中国航发南方工业有限公司 | Modular pouring system of integral precision casting and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10137898A (en) * | 1996-11-08 | 1998-05-26 | Sintokogio Ltd | Method for molding vertical slitted mold with self-hardening sand |
| US20020166651A1 (en) * | 2001-05-08 | 2002-11-14 | Herron David J. | Automotive and aerospace materials in a continuous, pressurized mold filling and casting machine |
| CN1640547A (en) * | 2004-01-17 | 2005-07-20 | 攀枝花钢铁有限责任公司钢铁研究院 | Method for producing ball mill burnisher |
| CN1733389A (en) * | 2004-08-03 | 2006-02-15 | 孙兆宝 | Pouring method capable of improving utilization ratio of liquid steel for steel casting |
| CN201783618U (en) * | 2010-04-30 | 2011-04-06 | 广州有色金属研究院 | Light alloy metal mold casting die used for test |
| CN202079258U (en) * | 2011-05-23 | 2011-12-21 | 张年生 | Water turbine sleeve moulding assembling box |
| CN202123210U (en) * | 2011-05-21 | 2012-01-25 | 王吉龙 | Bottom gating system structure of aluminum copper alloy |
| CN207431186U (en) * | 2017-11-22 | 2018-06-01 | 扬州峰明光电新材料有限公司 | The gravity-assist pouring system of U-shaped magnesium alloy member |
| CN110340299A (en) * | 2019-07-08 | 2019-10-18 | 西安合力汽车配件有限公司 | A kind of casting device and its pouring procedure of precoated sand stack-type product |
-
2021
- 2021-06-25 CN CN202110712411.3A patent/CN113333681A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10137898A (en) * | 1996-11-08 | 1998-05-26 | Sintokogio Ltd | Method for molding vertical slitted mold with self-hardening sand |
| US20020166651A1 (en) * | 2001-05-08 | 2002-11-14 | Herron David J. | Automotive and aerospace materials in a continuous, pressurized mold filling and casting machine |
| CN1640547A (en) * | 2004-01-17 | 2005-07-20 | 攀枝花钢铁有限责任公司钢铁研究院 | Method for producing ball mill burnisher |
| CN1733389A (en) * | 2004-08-03 | 2006-02-15 | 孙兆宝 | Pouring method capable of improving utilization ratio of liquid steel for steel casting |
| CN201783618U (en) * | 2010-04-30 | 2011-04-06 | 广州有色金属研究院 | Light alloy metal mold casting die used for test |
| CN202123210U (en) * | 2011-05-21 | 2012-01-25 | 王吉龙 | Bottom gating system structure of aluminum copper alloy |
| CN202079258U (en) * | 2011-05-23 | 2011-12-21 | 张年生 | Water turbine sleeve moulding assembling box |
| CN207431186U (en) * | 2017-11-22 | 2018-06-01 | 扬州峰明光电新材料有限公司 | The gravity-assist pouring system of U-shaped magnesium alloy member |
| CN110340299A (en) * | 2019-07-08 | 2019-10-18 | 西安合力汽车配件有限公司 | A kind of casting device and its pouring procedure of precoated sand stack-type product |
Non-Patent Citations (1)
| Title |
|---|
| 李开龙, 西安交通大学出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114178480A (en) * | 2021-12-08 | 2022-03-15 | 中国航发南方工业有限公司 | Modular pouring system of integral precision casting and preparation method thereof |
| CN114178480B (en) * | 2021-12-08 | 2024-05-14 | 中国航发南方工业有限公司 | Modularized pouring system of integral precise casting and preparation method thereof |
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Application publication date: 20210903 |