CN114260426B - Edge-opening nut mold, special sand core for edge-opening nut and casting method of special sand core - Google Patents
Edge-opening nut mold, special sand core for edge-opening nut and casting method of special sand core Download PDFInfo
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- CN114260426B CN114260426B CN202111597765.4A CN202111597765A CN114260426B CN 114260426 B CN114260426 B CN 114260426B CN 202111597765 A CN202111597765 A CN 202111597765A CN 114260426 B CN114260426 B CN 114260426B
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- sand core
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- core
- half iron
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- 238000005266 casting Methods 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title claims abstract description 16
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 74
- 229910052742 iron Inorganic materials 0.000 claims abstract description 52
- 239000004576 sand Substances 0.000 claims abstract description 25
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims abstract description 15
- 238000004519 manufacturing process Methods 0.000 claims abstract description 15
- 238000005192 partition Methods 0.000 claims description 17
- 229910052804 chromium Inorganic materials 0.000 claims description 10
- 239000011651 chromium Substances 0.000 claims description 10
- 238000000926 separation method Methods 0.000 claims description 9
- 239000003973 paint Substances 0.000 claims description 7
- 238000003825 pressing Methods 0.000 claims description 3
- 239000002344 surface layer Substances 0.000 claims description 3
- 238000001746 injection moulding Methods 0.000 abstract description 4
- 238000001816 cooling Methods 0.000 description 7
- 239000010410 layer Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000000465 moulding Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Abstract
An open-edge nut mould, a special sand core for the open-edge nut and a casting method thereof relate to the technical field of injection molding machines and are used for solving the technical problems of complex mould manufacturing and sand core manufacturing procedures, time consumption and labor consumption in the prior art. According to the die for the open-edge nut, the special sand core for the open-edge nut and the casting method thereof, the core box and the movable block in the existing die can be canceled by adopting horizontal modeling, so that the manufacturing difficulty of the die is effectively reduced, the working intensity of modeling and core making work is further reduced, time and labor are saved, and the yield of castings is effectively improved; in addition, the special sand core of brother Lin Zhukong has 1 slope from one end to the other end along the axis direction, has the draft angle promptly to can guarantee the reuse of sand core, add chrome ore sand as the anti-deformation layer in the middle of the two halves iron sand core of special sand core, thereby can effectively avoid the thermal deformation of sand core, and can make the chill demold smoothly after unpacking, and then saved the cost of manufacture of this structure.
Description
Technical Field
The invention relates to the technical field of injection molding machines, in particular to an open-edge nut die, a special sand core for an open-edge nut and a casting method of the special sand core.
Background
The open limit nut is as one of the important structural parts of injection molding machine, links to each other with the aircraft nose board of moulding plastics, and the middle hole is the tiebar, and open limit nut needs to cut in the centre when processing, and inside processing becomes the screw thread, and open limit nut and the effective cooperation of tiebar play vital effect to the use and the stability of injection molding machine, consequently the hole quality indirectly influences fuselage quality.
In the prior art, the casting process generally adopts vertical molding of resin sand, parting is carried out from the bottom surface of a casting, the structure is completely carried out from an upper die, a lower die is a flat box, and in order to be capable of smoothly stripping, a core box and a loose piece are required to be made of a bulge and an inner hole structure, as shown in fig. 1 and 2, three core boxes are required to be made of the die process: template fixed station core box 11, clamp plate mount pad core box 12, tie bar hole core box 13, and four loose pieces: the oil cylinder pull rod installation table movable block 21, the oil cylinder installation table movable block 22 and the two pull rod installation table movable blocks 23, so that the die manufacturing and the sand core manufacturing processes are complicated, and the operation of workers is time-consuming and labor-consuming; in addition, the inner hole has shrinkage defects.
Disclosure of Invention
The invention aims to provide an edge-opening nut die, a special sand core for an edge-opening nut and a casting method thereof, which are used for solving the technical problems of complex die manufacturing and sand core manufacturing procedures, time consumption and labor consumption in the prior art.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the open-edge nut die adopts a horizontal type shape, is divided from the middle of a brother Lin Zhukong, is provided with a sand core special for the brother Lin Zhukong in the upper die and the lower die in half, and has an inclined gradient of 1 DEG from one end to the other end along the axis direction;
the upper die and the lower die are respectively provided with a pull rod mounting table, a pressing plate mounting seat and a machine body, the upper die is provided with an oil cylinder pull rod mounting table and a template fixing table, and the lower die is provided with an oil cylinder mounting table.
Wherein, special psammitolite includes: the two ends of the first half iron sand core and the second half iron sand core in the axial direction are respectively provided with a pair of first grooves and a pair of second grooves, and the two first grooves and the two second grooves are respectively butted to form adjusting holes of two circular ring structures;
the first half iron sand core with be located between the second half iron sand core and be provided with the division board respectively at four apex angles, the holding ring has been placed to the adjustment hole, the holding ring is used for making first half iron sand core with the second half iron sand core presss from both sides tightly the division board, just first half iron sand core with be formed with the clearance between the second half iron sand core through the division board, the clearance is used for filling chromium ore sand.
Specifically, the thickness of the partition plate is 20mm.
A special sand core for an open-edge nut, comprising: the two ends of the first half iron sand core and the second half iron sand core in the axial direction are respectively provided with a pair of first grooves and a pair of second grooves, and the two first grooves and the two second grooves are respectively butted to form adjusting holes of two circular ring structures;
the first half iron sand core with be located between the second half iron sand core and be provided with the division board respectively at four apex angles, the holding ring has been placed to the adjustment hole, the holding ring is used for making first half iron sand core with the second half iron sand core presss from both sides tightly the division board, just first half iron sand core with be formed with the clearance between the second half iron sand core through the division board, the clearance is used for filling chromium ore sand.
Wherein the thickness of the partition plate is 20mm.
Specifically, the special sand core is provided with a 1-degree inclined gradient from one end to the other end along the axial direction.
Further, the outer surface layer of the special sand core is coated with a paint.
The special sand core is divided into an upper half and a lower half, and comprises the following manufacturing steps:
standing the split chill vertically, and preparing four partition plates;
the separation plates are respectively arranged at four corners of the gap of the chill, the fastening rings are arranged in the adjusting holes and are bound, and the tightness of the fastening rings is adjusted until the separation plates are clamped;
two positioning plates are adopted to block the iron cooling gap and iron wires are used for binding, and chromium ore sand is added into the cooling gap;
and after the chromium ore sand is hardened, the iron wires and the locating plate are removed, and the sand is ground flat and coated with the paint.
Wherein the thickness of the partition plate is 20mm.
Specifically, after the sand is ground, the paint is painted twice.
Compared with the prior art, the open-edge nut die, the special sand core for the open-edge nut and the casting method thereof have the following advantages:
according to the die for the open-edge nut, the special sand core for the open-edge nut and the casting method thereof, the core box and the movable block in the existing die can be canceled by adopting the horizontal modeling, so that the manufacturing difficulty of the die is effectively reduced, the working strength of modeling and core making work is further reduced, time and labor are saved, and the yield of castings is effectively improved; in addition, the special sand core of brother Lin Zhukong has 1 slope from one end to the other end along the axis direction, has the draft angle promptly to can guarantee the reuse of sand core, add chrome ore sand as the anti-deformation layer in the middle of the two halves iron sand core of special sand core, thereby can effectively avoid the thermal deformation of sand core, and can make the chill demold smoothly after unpacking, and then saved the cost of manufacture of this structure.
Drawings
FIG. 1 is a schematic perspective view of an open-sided nut mold assembly provided in the prior art;
FIG. 2 is a schematic top view of an open-sided nut mold assembly provided in the prior art;
fig. 3 is a schematic structural view of an open-edge nut mold according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a special sand core for an open-edge nut according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a first or second semi-iron sand core in a special sand core for an open-edge nut according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a special sand core for an open-edge nut according to an embodiment of the present invention during casting.
Reference numerals:
11-a template fixing table core box; 12-a pressing plate mounting seat core box; 13-tie bar hole core box; 21-an oil cylinder pull rod mounting table loose piece; 22-an oil cylinder mounting table loose piece; 23-a pull rod mounting table loose piece;
3-upper die; 31-an oil cylinder pull rod mounting table; 32-a template fixing table; 4-lower die; 41-an oil cylinder mounting table; 61-a tie rod mount; 62-a platen mount; 63-fuselage;
5-special sand cores; 51-a first semi-iron core; 52-a second semi-iron core; 53-a first groove; 54-a second groove; 55-dividing plates; 56-chromium ore; 7-locating plate.
Detailed Description
In order to facilitate understanding, the mold for the open-edge nut, the special sand core for the open-edge nut and the casting method thereof provided by the embodiment of the invention are described in detail below with reference to the accompanying drawings.
The embodiment of the invention provides an open-edge nut die, as shown in fig. 3, which adopts a horizontal type shape, is divided from the middle of a brother Lin Zhukong, is divided into an upper die 3 and a lower die 4 in half, is provided with a sand core 5 special for a brother Lin Zhukong, and the special sand core 5 has an inclined gradient of 1 DEG from one end to the other end along the axial direction, as shown in fig. 4;
the upper die 3 and the lower die 4 have a tie rod mount 61, a platen mount 62, and a body 63, respectively, the upper die 3 has an oil cylinder tie rod mount 31 and a die plate mount 32, and the lower die 4 has an oil cylinder mount 41.
As shown in fig. 4, the dedicated sand core 5 may include: the first half iron sand core 51 and the second half iron sand core 52 are symmetrical, two ends of the first half iron sand core 51 and the second half iron sand core 52 along the axial direction can be respectively provided with a pair of first grooves 53 and a pair of second grooves 54, and the two first grooves 53 and the two second grooves 53 can be respectively butted to form two adjusting holes with circular ring structures, as shown in fig. 5;
the separation plates 55 may be respectively provided between the first half iron core 51 and the second half iron core 52 at four corners, the adjustment holes are placed with fastening rings (not shown in the drawings) that can be used to clamp the separation plates 55 between the first half iron core 51 and the second half iron core 52, and gaps are formed between the first half iron core 51 and the second half iron core 52 through the separation plates 55, which can be used to fill the chrome ore 56.
Specifically, the thickness of the partition plate 55 may be preferably 20mm, so as to ensure that the thickness of the chromite sand 56 as the deformation preventing layer is 20mm, thereby effectively preventing the sand core from being deformed by heat; if the thickness of the partition plate 55 is less than 20mm, the chromite sand is not poured well when the sand core is produced, and if it is more than 20mm, the cooling effect is weak.
A special sand core for an open-edge nut, as shown in fig. 4, comprising: the first half iron sand core 51 and the second half iron sand core 52 are symmetrical, two ends of the first half iron sand core 51 and the second half iron sand core 52 along the axial direction are respectively provided with a pair of first grooves 53 and a pair of second grooves 54, and the two first grooves 53 and the two second grooves 54 are respectively butted to form two adjusting holes with circular ring structures, as shown in fig. 5;
the partition plates 55 are respectively provided between the first half iron core 51 and the second half iron core 52 at four corners, fastening rings (not shown in the drawings) are placed in the adjustment holes, the fastening rings can be used to clamp the partition plates 55 between the first half iron core 51 and the second half iron core 52, and gaps are formed between the first half iron core 51 and the second half iron core 52 through the partition plates 55, and the gaps can be used to fill the chrome ore 56.
Wherein, the thickness of the partition plate 55 can be preferably 20mm, so as to ensure that the thickness of the chromite sand 56 serving as the deformation preventing layer is 20mm, thereby effectively avoiding the thermal deformation of the sand core; if the thickness of the partition plate 55 is less than 20mm, the chromite sand is not poured well when the sand core is produced, and if it is more than 20mm, the cooling effect is weak.
Specifically, as shown in fig. 4, the special sand core can have a 1-degree inclined gradient from one end to the other end along the axis direction, namely, a draft angle, so that the recycling of the sand core can be ensured.
Further, the outer surface layer of the special sand core can be coated with a paint.
As shown in FIG. 6, the special sand core is divided into an upper half and a lower half, and the method comprises the following manufacturing steps:
the split chill (i.e., the first half iron core 51 and the second half iron core 52) is placed upright and four partition plates 55 are prepared;
the separation plates 55 are respectively arranged at four corners of the gap of the chiller, the fastening rings are arranged in the adjusting holes (namely the first groove 53 and the second groove 54) and are bound, and the tightness of the fastening rings is adjusted until the separation plates 55 are clamped;
two positioning plates 7 are adopted to block the iron cooling gap and iron wires are used for binding, and chromium ore sand 56 is added into the cooling gap;
after the chrome ore 56 is hardened, the iron wires and the locating plate 7 are removed, and the sand is ground flat and painted.
Wherein, the thickness of the partition plate 55 can be preferably 20mm, so as to ensure that the thickness of the chromite sand 56 serving as the deformation preventing layer is 20mm, thereby effectively avoiding the thermal deformation of the sand core; if the thickness of the partition plate 55 is less than 20mm, the chromite sand is not poured well when the sand core is produced, and if it is more than 20mm, the cooling effect is weak.
Specifically, after the sand is ground flat, it may be preferable to apply the paint two times.
Compared with the prior art, the open-edge nut die, the special sand core for the open-edge nut and the casting method thereof have the following advantages:
according to the edge-opening nut mold, the special sand core for the edge-opening nut and the casting method thereof, the core box and the movable block in the existing mold can be canceled by adopting the horizontal molding, so that the manufacturing difficulty of the mold is effectively reduced, the working intensity of molding and core-making work is further reduced, time and labor are saved, and the yield of castings is effectively improved; in addition, the special sand core of brother Lin Zhukong has 1 slope from one end to the other end along the axis direction, has the draft angle promptly to can guarantee the reuse of sand core, add chrome ore sand as the anti-deformation layer in the middle of the two halves iron sand core of special sand core, thereby can effectively avoid the thermal deformation of sand core, and can make the chill demold smoothly after unpacking, and then saved the cost of manufacture of this structure.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (5)
1. The die is characterized in that a horizontal model is adopted, the middle of a die is divided into a middle die and a half of the die is arranged on an upper die and a half of the die is arranged on a lower die, a special sand core of the die Lin Zhukong is arranged, and the special sand core is provided with an inclined gradient of 1 degree from one end to the other end along the axis direction;
the upper die and the lower die are respectively provided with a pull rod mounting table, a pressing plate mounting seat and a machine body, the upper die is provided with an oil cylinder pull rod mounting table and a template fixing table, and the lower die is provided with an oil cylinder mounting table;
the special sand core comprises: the two ends of the first half iron sand core and the second half iron sand core in the axial direction are respectively provided with a pair of first grooves and a pair of second grooves, and the two first grooves and the two second grooves are respectively butted to form adjusting holes of two circular ring structures;
the first half iron sand core with be located between the second half iron sand core and be provided with the division board respectively at four apex angles, the holding ring has been placed to the adjustment hole, the holding ring is used for making first half iron sand core with the second half iron sand core presss from both sides tightly the division board, just first half iron sand core with be formed with the clearance between the second half iron sand core through the division board, the clearance is used for filling chromium ore sand.
2. The split nut die of claim 1, wherein the thickness of the divider plate is 20mm.
3. The sand core casting method special for the open-edge nut is characterized in that the sand core special for the open-edge nut comprises the following steps: the two ends of the first half iron sand core and the second half iron sand core in the axial direction are respectively provided with a pair of first grooves and a pair of second grooves, and the two first grooves and the two second grooves are respectively butted to form adjusting holes of two circular ring structures;
the first half iron sand core and the second half iron sand core are respectively provided with a division plate at four vertex angles, the adjustment holes are provided with fastening rings, the fastening rings are used for enabling the first half iron sand core and the second half iron sand core to clamp the division plates, gaps are formed between the first half iron sand core and the second half iron sand core through the division plates, and the gaps are used for filling chromium ore sand;
the thickness of the partition plate is 20mm, the special sand core is provided with a 1-degree inclined slope from one end to the other end along the axis direction, and the outer surface layer of the special sand core is coated with paint;
the special sand core is divided into an upper half and a lower half and comprises the following manufacturing steps:
standing the split chill vertically, and preparing four partition plates;
the separation plates are respectively arranged at four corners of the gap of the chill, the fastening rings are arranged in the adjusting holes and are bound, and the tightness of the fastening rings is adjusted until the separation plates are clamped;
two positioning plates are adopted to block the gap of the chill and iron wires are used for binding, and chromium ore sand is added into the gap of the chill;
and after the chromium ore sand is hardened, the iron wires and the locating plate are removed, and the sand is ground flat and coated with the paint.
4. The method for casting a special sand core for an open-edge nut according to claim 3, wherein the thickness of the partition plate is 20mm.
5. The method for casting a special sand core for an open-edge nut according to claim 3 or 4, wherein the sand is ground and then painted twice.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111597765.4A CN114260426B (en) | 2021-12-24 | 2021-12-24 | Edge-opening nut mold, special sand core for edge-opening nut and casting method of special sand core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111597765.4A CN114260426B (en) | 2021-12-24 | 2021-12-24 | Edge-opening nut mold, special sand core for edge-opening nut and casting method of special sand core |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114260426A CN114260426A (en) | 2022-04-01 |
| CN114260426B true CN114260426B (en) | 2023-11-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111597765.4A Active CN114260426B (en) | 2021-12-24 | 2021-12-24 | Edge-opening nut mold, special sand core for edge-opening nut and casting method of special sand core |
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| CN (1) | CN114260426B (en) |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB496537A (en) * | 1938-05-13 | 1938-12-01 | Birco Motor Cylinder Company L | Improved method of, and means for, casting engine and like cylinders |
| DE3509015A1 (en) * | 1984-03-13 | 1985-09-26 | Tovarna Avtomobilov in Motorjev n.sol.o., Tozd Raziskave in razvoj n.sol.o., Maribor | Method and equipment for casting the grey cast iron cylinders of air-cooled internal combustion engines |
| US5479981A (en) * | 1993-12-29 | 1996-01-02 | Hyundai Motor Company | Method for casting a hollow camshaft for internal combustion engine |
| KR20040038333A (en) * | 2002-10-31 | 2004-05-08 | 한국과학기술원 | Lost Foam Riser |
| CN104550757A (en) * | 2014-12-30 | 2015-04-29 | 宁夏共享装备有限公司 | Cold iron and core rod combining device for casting of sand core of generator cylinder block and manufacturing method |
| CN104785720A (en) * | 2015-05-06 | 2015-07-22 | 广东恒成科技股份有限公司 | Casting die and casting process of die-casting machine adjusting nut |
| CN105382206A (en) * | 2015-12-11 | 2016-03-09 | 南车戚墅堰机车车辆工艺研究所有限公司 | Casting mold and forming method for box body of gearbox |
| CN207057591U (en) * | 2017-07-26 | 2018-03-02 | 湖北省机电研究设计院股份公司 | A kind of pick housing of pneumatic pick mold |
| CN210412487U (en) * | 2019-07-05 | 2020-04-28 | 宁波永祥铸造有限公司 | Special dark chill of psammitolite |
| CN111390120A (en) * | 2020-05-09 | 2020-07-10 | 大连华锐重工铸业有限公司 | Core making method of middle hole sand core of large injection molding machine template casting |
| CN212884925U (en) * | 2020-08-28 | 2021-04-06 | 中铝山东工程技术有限公司 | Indirect external chill of large casting |
| CN212917558U (en) * | 2020-07-02 | 2021-04-09 | 天津新伟祥工业有限公司 | Sand-coated chilling block structure |
| CN113680967A (en) * | 2021-07-28 | 2021-11-23 | 中钢集团邢台机械轧辊有限公司 | Casting forming method of hundred-ton spent fuel container |
| CN216828524U (en) * | 2021-12-24 | 2022-06-28 | 阜新力达钢铁铸造有限公司 | Edge-opening nut die and special sand core for edge-opening nut |
-
2021
- 2021-12-24 CN CN202111597765.4A patent/CN114260426B/en active Active
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB496537A (en) * | 1938-05-13 | 1938-12-01 | Birco Motor Cylinder Company L | Improved method of, and means for, casting engine and like cylinders |
| DE3509015A1 (en) * | 1984-03-13 | 1985-09-26 | Tovarna Avtomobilov in Motorjev n.sol.o., Tozd Raziskave in razvoj n.sol.o., Maribor | Method and equipment for casting the grey cast iron cylinders of air-cooled internal combustion engines |
| US5479981A (en) * | 1993-12-29 | 1996-01-02 | Hyundai Motor Company | Method for casting a hollow camshaft for internal combustion engine |
| KR20040038333A (en) * | 2002-10-31 | 2004-05-08 | 한국과학기술원 | Lost Foam Riser |
| CN104550757A (en) * | 2014-12-30 | 2015-04-29 | 宁夏共享装备有限公司 | Cold iron and core rod combining device for casting of sand core of generator cylinder block and manufacturing method |
| CN104785720A (en) * | 2015-05-06 | 2015-07-22 | 广东恒成科技股份有限公司 | Casting die and casting process of die-casting machine adjusting nut |
| CN105382206A (en) * | 2015-12-11 | 2016-03-09 | 南车戚墅堰机车车辆工艺研究所有限公司 | Casting mold and forming method for box body of gearbox |
| CN207057591U (en) * | 2017-07-26 | 2018-03-02 | 湖北省机电研究设计院股份公司 | A kind of pick housing of pneumatic pick mold |
| CN210412487U (en) * | 2019-07-05 | 2020-04-28 | 宁波永祥铸造有限公司 | Special dark chill of psammitolite |
| CN111390120A (en) * | 2020-05-09 | 2020-07-10 | 大连华锐重工铸业有限公司 | Core making method of middle hole sand core of large injection molding machine template casting |
| CN212917558U (en) * | 2020-07-02 | 2021-04-09 | 天津新伟祥工业有限公司 | Sand-coated chilling block structure |
| CN212884925U (en) * | 2020-08-28 | 2021-04-06 | 中铝山东工程技术有限公司 | Indirect external chill of large casting |
| CN113680967A (en) * | 2021-07-28 | 2021-11-23 | 中钢集团邢台机械轧辊有限公司 | Casting forming method of hundred-ton spent fuel container |
| CN216828524U (en) * | 2021-12-24 | 2022-06-28 | 阜新力达钢铁铸造有限公司 | Edge-opening nut die and special sand core for edge-opening nut |
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| CN114260426A (en) | 2022-04-01 |
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