CN110614295A - Polygonal ring forging top rounding process - Google Patents
Polygonal ring forging top rounding process Download PDFInfo
- Publication number
- CN110614295A CN110614295A CN201910957568.5A CN201910957568A CN110614295A CN 110614295 A CN110614295 A CN 110614295A CN 201910957568 A CN201910957568 A CN 201910957568A CN 110614295 A CN110614295 A CN 110614295A
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- China
- Prior art keywords
- ring forging
- polygonal ring
- polygonal
- forging
- circle
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D3/00—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts
- B21D3/10—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts between rams and anvils or abutments
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The invention discloses a polygonal ring forging top rounding process, which comprises the following steps: (1) preparing a polygonal ring forging top circle device; (2) when the wall thickness of the ring forging is smaller than 200mm, the polygonal ring forging is not required to be heated when being rounded, and the polygonal ring forging is rounded through a rounding device; when the wall thickness of the ring forging is not less than 200mm, if the polygonal ring forging is not subjected to heat treatment before the polygonal ring forging is rounded, the polygonal ring forging needs to be heated to a normalizing temperature, and then the polygonal ring forging can be rounded by a rounding device; if the polygonal ring forging is subjected to heat treatment before the polygonal ring forging is rounded, firstly, the polygonal ring forging needs to be heated to a tempering temperature, and then the polygonal ring forging can be rounded by a rounding device; after rounding, the press is pressed flat if warped, and stress relief annealing is required if heat treated. The process can quickly push the circular ring forging, has low energy consumption and is suitable for pushing the circular rings of polygonal ring forgings with different sizes.
Description
Technical Field
The invention relates to the field of ring forgings, in particular to a polygonal ring forging top rounding process.
Background
In the actual ring rolling production process, the condition that the ring forging deforms into the polygonal ring forging is often caused due to damage, aging or manual misoperation of equipment and the like. In the past, when the situation occurs, a workshop usually adopts a cold-finishing method to reform the ring into a circle, and the cold-finishing method is to directly place the ring forging which is forged and cooled on a ring rolling machine for rolling so as to reform the ring into a circle, but the cold-finishing method has great damage to the ring rolling machine and high energy consumption.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the polygonal ring forging rounding process can rapidly round the polygonal ring forging and has low energy consumption.
In order to solve the problems, the technical scheme adopted by the invention is as follows: the polygonal ring forging top rounding process is characterized in that: the process comprises the following steps:
(1) prepare multilateral ring forging and push up circle device, multilateral ring forging pushes up circle device's structure and includes: the bracket, the distance pole of side by side interval arrangement is controlled to being provided with two in the front portion of bracket, rear portion at the bracket is provided with one and blocks the post, middle part at the bracket is provided with an hydro-cylinder, be provided with a top on blocking the post on the bottom of hydro-cylinder body, the evagination deformation section of polygonal ring forging can shelve on the bracket between two distance poles and hydro-cylinder, the hydro-cylinder piston rod can make hydro-cylinder piston rod top in evagination deformation section after stretching out, make the inboard both ends of evagination deformation section can offset with two distance poles respectively and lean on, thereby make the evagination deformation section can be by the inside apical circle of hydro-cylinder, still include: the outer cushion block is used for cushioning the polygonal ring forging piece when the convex deformation section of the polygonal ring forging piece is placed on the bracket, so that the polygonal ring forging piece can be horizontally placed;
(2) a, when the wall thickness of the polygonal ring forging is smaller than 200mm, the polygonal ring forging does not need to be heated when being subjected to circle jacking, all convex deformation sections of the polygonal ring forging are jacked to a specified size one by one through a polygonal ring forging jacking device to enable the polygonal ring forging to be subjected to circle jacking, the thrust of an oil cylinder is 1000N when the polygonal ring forging is subjected to circle jacking, and after the circle jacking, if the ring forging is subjected to heat treatment which is not performed, the ring forging is subjected to heat removal treatment, and if the ring forging is subjected to circle jacking after the heat treatment, the ring forging is subjected to stress removal annealing in a heating furnace;
B. when the wall thickness of the polygonal ring forging is not less than 200mm,
b-1, if the polygonal ring forging is not subjected to heat treatment before the top circle, firstly heating the polygonal ring forging to the normalizing temperature corresponding to the ring forging material, then jacking all convex deformation sections of the polygonal ring forging to a specified size one by one through a polygonal ring forging jacking device to enable the polygonal ring forging to be topped circle, after the top circle, if the ring forging is not warped, then carrying out heat removal treatment on the ring forging, and if the ring forging is warped, then carrying out heat removal treatment on the ring forging after the warped part is flattened on a 6000T hydraulic press;
b-2, if the polygonal ring forging is subjected to heat treatment before the top circle, firstly heating the polygonal ring forging to the tempering temperature corresponding to the ring forging material, then jacking all convex deformation sections of the polygonal ring forging to the specified size one by one through a polygonal ring forging jacking device to enable the polygonal ring forging to be topped circle, after the top circle, if the ring forging is not warped, then carrying out stress relief annealing on the ring forging in a heating furnace, and if the ring forging is warped, then flattening the warped part on a 6000T hydraulic press and then carrying out stress relief annealing.
Further, the polygonal ring forging tip rounding process comprises the following steps: distance pole and the mounting structure who blocks post and bracket are: the bracket is provided with a threaded hole, the lower ends of the distance rod and the blocking column are provided with studs, and the distance rod and the blocking column can be installed on the bracket by screwing the studs into the threaded hole.
Further, the polygonal ring forging tip rounding process comprises the following steps: a plurality of threaded holes are provided in the bracket so that the distance and position between the two distance rods can be adjusted by screwing them into different threaded holes, respectively.
Further, the polygonal ring forging tip rounding process comprises the following steps: the structure of the bracket comprises: the annular ring, the distance rod and the blocking column are arranged on the annular ring, a cylinder cushion block is clamped in the middle of the annular ring, and the oil cylinder is arranged on the cylinder cushion block.
Further, the polygonal ring forging tip rounding process comprises the following steps: the surface of the blocking column, which is pressed against the top rod, is a plane.
Further, the polygonal ring forging tip rounding process comprises the following steps: the distance rod is a cylinder.
Further, the polygonal ring forging tip rounding process comprises the following steps: the top end of the piston rod of the oil cylinder is in threaded connection with a top circular cushion block, and the outer end surface of the top circular cushion block, which is in contact with the convex deformation section, is arc-shaped.
Further, the polygonal ring forging tip rounding process comprises the following steps: the outside of the oil cylinder is coated with heat insulation cotton.
The invention has the advantages that: the polygonal ring forging piece top circle process can quickly top a ring forging piece, has low energy consumption and is suitable for top circles of polygonal ring forging pieces with different sizes.
Drawings
FIG. 1 is a schematic structural diagram of the polygonal ring forging rounding device.
Detailed Description
The present invention will be described in further detail below with reference to specific embodiments and the attached drawings.
The polygonal ring forging top rounding process comprises the following steps:
(1) preparing a polygonal ring forging rounding device, as shown in fig. 1, the polygonal ring forging rounding device comprises: bracket 1 is provided with two distance rods 2 of controlling side by side interval arrangement in the front portion of bracket 1, and distance rod 2 is the cylinder, and the cylinder is difficult for the ring forging of gouging, is provided with one at the rear portion of bracket 1 and blocks post 3, and in this embodiment, distance rod 2 is with the mounting structure who blocks post 3 and bracket 1 and be: a threaded hole 11 is formed in the bracket 1, studs are arranged at the lower ends of the distance rod 2 and the blocking column 3, and the distance rod 2 and the blocking column 3 can be installed on the bracket 1 by screwing the studs into the threaded hole 11; after the arrangement, the distance rod 2 and the blocking column 3 can be conveniently detached, and can not be moved when in use, so that the safety is higher; the middle part of the bracket 1 is provided with an oil cylinder 4, the bottom end of the cylinder body of the oil cylinder 4 is provided with a mandril 41 which is propped against the blocking column 3, and the surface of the blocking column 3 which is propped against by the mandril 41 is a plane, so that the oil cylinder 4 can be better propped against the plane; the evagination deformation section of polygonal ring forging 9 can shelve on bracket 1 between two distance poles 2 and hydro-cylinder 4, and 4 piston rods of hydro-cylinder stretch out the back and enable 4 piston rod tops of hydro-cylinder on the evagination deformation section for the inboard both ends of evagination deformation section can lean on with two distance pole 2 offsets respectively, thereby make the evagination deformation section can be by 4 inside apical circles of hydro-cylinder, still include: when the convex deformation section of the polygonal ring forging 9 is placed on the bracket 1, the outer cushion block 5 is used for cushioning the polygonal ring forging 9, so that the polygonal ring forging 9 can be horizontally placed;
(2) a, when the wall thickness of the polygonal ring forging is smaller than 200mm, the polygonal ring forging does not need to be heated when being subjected to circle jacking, all convex deformation sections of the polygonal ring forging are jacked to a specified size one by one through a polygonal ring forging jacking device to enable the polygonal ring forging to be subjected to circle jacking, the thrust of an oil cylinder is 1000N when the polygonal ring forging is subjected to circle jacking, and after the circle jacking, if the ring forging is subjected to heat treatment which is not performed, the ring forging is subjected to heat removal treatment, and if the ring forging is subjected to circle jacking after the heat treatment, the ring forging is subjected to stress removal annealing in a heating furnace; when the circle is pushed, the size of the polygonal ring forging is measured by a caliper when the circle is pushed;
B. when the wall thickness of the polygonal ring forging is not less than 200mm,
b-1, if the polygonal ring forging is not subjected to heat treatment before the top circle, firstly heating the polygonal ring forging to the normalizing temperature corresponding to the ring forging material, then jacking all convex deformation sections of the polygonal ring forging to a specified size one by one through a polygonal ring forging jacking device to enable the polygonal ring forging to be topped circle, after the top circle, if the ring forging is not warped, then carrying out heat removal treatment on the ring forging, and if the ring forging is warped, then carrying out heat removal treatment on the ring forging after the warped part is flattened on a 6000T hydraulic press;
b-2, if the polygonal ring forging is subjected to heat treatment before the top circle, firstly heating the polygonal ring forging to the tempering temperature corresponding to the ring forging material, then jacking all convex deformation sections of the polygonal ring forging to the specified size one by one through a polygonal ring forging jacking device to enable the polygonal ring forging to be topped circle, after the top circle, if the ring forging is not warped, then carrying out stress relief annealing on the ring forging in a heating furnace, and if the ring forging is warped, then flattening the warped part on a 6000T hydraulic press and then carrying out stress relief annealing.
The ring forging with larger wall thickness can be rounded after being heated, and if the ring forging is forced to be rounded by a cold ring, the ring forging is easy to crack and even collapse, so that danger is caused; the residual internal stress can be effectively eliminated by stress relief annealing, the size stability of the ring forging is improved, and the ring forging is prevented from deforming or cracking after being subjected to rounding.
In the present embodiment, a plurality of threaded holes 11 are provided in the bracket 1, so that the distance and position between the two distance rods 2 can be adjusted by screwing them into different threaded holes 11, respectively. This is to accommodate the tip circles of different sizes of ring forgings.
The structure of the bracket 1 includes: the annular ring 12, the distance rod 2 and the blocking column 3 are arranged on the annular ring 12, a cylinder cushion block 13 is clamped in the middle of the annular ring 12, and the oil cylinder 4 is arranged on the cylinder cushion block 13. The height of the oil cylinder 4 can be adjusted by replacing the cylinder cushion blocks 13 with different heights, so that the top circle of the ring forging with different heights is adapted.
The top end of the piston rod of the oil cylinder 4 is in threaded connection with a top round cushion block 42, and the outer end surface of the top round cushion block 42, which is in contact with the convex deformation section, is arc-shaped. The device is used for fitting the arc shape of the outer surface of the ring forging, preventing the outer surface of the ring forging from being gouged when the ring forging is rounded, and preventing accidents caused by the slipping of the ring forging device.
The outer side of the oil cylinder 4 is coated with heat insulation cotton. The ring forging needs to be heated when the ring forging is rounded, so that the oil cylinder needs to be wrapped by heat insulation cotton, and the oil cylinder is prevented from being damaged due to overheating.
Claims (8)
1. The polygonal ring forging top rounding process is characterized in that: the process comprises the following steps:
(1) prepare multilateral ring forging and push up circle device, multilateral ring forging pushes up circle device's structure and includes: the bracket, the distance pole of side by side interval arrangement is controlled to being provided with two in the front portion of bracket, rear portion at the bracket is provided with one and blocks the post, middle part at the bracket is provided with an hydro-cylinder, be provided with a top on blocking the post on the bottom of hydro-cylinder body, the evagination deformation section of polygonal ring forging can shelve on the bracket between two distance poles and hydro-cylinder, the hydro-cylinder piston rod can make hydro-cylinder piston rod top in evagination deformation section after stretching out, make the inboard both ends of evagination deformation section can offset with two distance poles respectively and lean on, thereby make the evagination deformation section can be by the inside apical circle of hydro-cylinder, still include: the outer cushion block is used for cushioning the polygonal ring forging piece when the convex deformation section of the polygonal ring forging piece is placed on the bracket, so that the polygonal ring forging piece can be horizontally placed;
(2) a, when the wall thickness of the polygonal ring forging is smaller than 200mm, the polygonal ring forging does not need to be heated when being subjected to circle jacking, all convex deformation sections of the polygonal ring forging are jacked to a specified size one by one through a polygonal ring forging jacking device to enable the polygonal ring forging to be subjected to circle jacking, the thrust of an oil cylinder is 1000N when the polygonal ring forging is subjected to circle jacking, and after the circle jacking, if the ring forging is subjected to heat treatment which is not performed, the ring forging is subjected to heat removal treatment, and if the ring forging is subjected to circle jacking after the heat treatment, the ring forging is subjected to stress removal annealing in a heating furnace;
B. when the wall thickness of the polygonal ring forging is not less than 200mm,
b-1, if the polygonal ring forging is not subjected to heat treatment before the top circle, firstly heating the polygonal ring forging to the normalizing temperature corresponding to the ring forging material, then jacking all convex deformation sections of the polygonal ring forging to a specified size one by one through a polygonal ring forging jacking device to enable the polygonal ring forging to be topped circle, after the top circle, if the ring forging is not warped, then carrying out heat removal treatment on the ring forging, and if the ring forging is warped, then carrying out heat removal treatment on the ring forging after the warped part is flattened on a 6000T hydraulic press;
b-2, if the polygonal ring forging is subjected to heat treatment before the top circle, firstly heating the polygonal ring forging to the tempering temperature corresponding to the ring forging material, then jacking all convex deformation sections of the polygonal ring forging to the specified size one by one through a polygonal ring forging jacking device to enable the polygonal ring forging to be topped circle, after the top circle, if the ring forging is not warped, then carrying out stress relief annealing on the ring forging in a heating furnace, and if the ring forging is warped, then flattening the warped part on a 6000T hydraulic press and then carrying out stress relief annealing.
2. The polygonal ring forging tip rounding process of claim 1, wherein: distance pole and the mounting structure who blocks post and bracket are: the bracket is provided with a threaded hole, the lower ends of the distance rod and the blocking column are provided with studs, and the distance rod and the blocking column can be installed on the bracket by screwing the studs into the threaded hole.
3. The polygonal ring forging tip rounding process of claim 2, wherein: a plurality of threaded holes are provided in the bracket so that the distance and position between the two distance rods can be adjusted by screwing them into different threaded holes, respectively.
4. The polygonal ring forging tip rounding process of claim 1, 2 or 3, wherein: the structure of the bracket comprises: the annular ring, the distance rod and the blocking column are arranged on the annular ring, a cylinder cushion block is clamped in the middle of the annular ring, and the oil cylinder is arranged on the cylinder cushion block.
5. The polygonal ring forging tip rounding process of claim 1, 2 or 3, wherein: the surface of the blocking column, which is pressed against the top rod, is a plane.
6. The polygonal ring forging tip rounding process of claim 1, 2 or 3, wherein: the distance rod is a cylinder.
7. The polygonal ring forging tip rounding process of claim 1, 2 or 3, wherein: the top end of the piston rod of the oil cylinder is in threaded connection with a top circular cushion block, and the outer end surface of the top circular cushion block, which is in contact with the convex deformation section, is arc-shaped.
8. The polygonal ring forging tip rounding process of claim 1, 2 or 3, wherein: the outside of the oil cylinder is coated with heat insulation cotton.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910957568.5A CN110614295B (en) | 2019-10-10 | 2019-10-10 | Polygonal ring forging top rounding process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910957568.5A CN110614295B (en) | 2019-10-10 | 2019-10-10 | Polygonal ring forging top rounding process |
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| Publication Number | Publication Date |
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| CN110614295A true CN110614295A (en) | 2019-12-27 |
| CN110614295B CN110614295B (en) | 2021-02-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910957568.5A Active CN110614295B (en) | 2019-10-10 | 2019-10-10 | Polygonal ring forging top rounding process |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113094824A (en) * | 2021-03-25 | 2021-07-09 | 武汉理工大学 | Radial-axial rolling coordinated deformation design method for large ring piece |
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| DE6811332U (en) * | 1967-12-15 | 1969-09-25 | Crow Hamilton & Company Ltd | DEVICE FOR ALIGNING BENDED PIPES OR THE LIKE. |
| JPS5533846A (en) * | 1978-09-01 | 1980-03-10 | Hitachi Ltd | Die for correcting roundness of can barrel |
| JPS63199025A (en) * | 1987-02-14 | 1988-08-17 | Sumitomo Metal Ind Ltd | Method for straightening bend of pipe/bar stock |
| CN201644564U (en) * | 2010-02-10 | 2010-11-24 | 西安石油大学 | Continuous oil pipe straightener |
| CN203635678U (en) * | 2013-10-27 | 2014-06-11 | 天津市津英达塑料制品有限责任公司 | Protector steel bushing welded junction flattening device |
| CN105945093A (en) * | 2016-06-20 | 2016-09-21 | 安徽省瑞杰锻造有限责任公司 | Straightening technology of long shaft type forging piece |
| CN207271857U (en) * | 2017-09-25 | 2018-04-27 | 无锡市恒欣金属制品有限公司 | A kind of trimmer |
| CN108746257A (en) * | 2018-06-18 | 2018-11-06 | 芜湖明智自动化科技有限公司 | A kind of flattening device for metal ring parts |
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2019
- 2019-10-10 CN CN201910957568.5A patent/CN110614295B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE6811332U (en) * | 1967-12-15 | 1969-09-25 | Crow Hamilton & Company Ltd | DEVICE FOR ALIGNING BENDED PIPES OR THE LIKE. |
| JPS5533846A (en) * | 1978-09-01 | 1980-03-10 | Hitachi Ltd | Die for correcting roundness of can barrel |
| JPS63199025A (en) * | 1987-02-14 | 1988-08-17 | Sumitomo Metal Ind Ltd | Method for straightening bend of pipe/bar stock |
| CN201644564U (en) * | 2010-02-10 | 2010-11-24 | 西安石油大学 | Continuous oil pipe straightener |
| CN203635678U (en) * | 2013-10-27 | 2014-06-11 | 天津市津英达塑料制品有限责任公司 | Protector steel bushing welded junction flattening device |
| CN105945093A (en) * | 2016-06-20 | 2016-09-21 | 安徽省瑞杰锻造有限责任公司 | Straightening technology of long shaft type forging piece |
| CN207271857U (en) * | 2017-09-25 | 2018-04-27 | 无锡市恒欣金属制品有限公司 | A kind of trimmer |
| CN108746257A (en) * | 2018-06-18 | 2018-11-06 | 芜湖明智自动化科技有限公司 | A kind of flattening device for metal ring parts |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113094824A (en) * | 2021-03-25 | 2021-07-09 | 武汉理工大学 | Radial-axial rolling coordinated deformation design method for large ring piece |
| CN113094824B (en) * | 2021-03-25 | 2021-12-07 | 武汉理工大学 | Radial-axial rolling coordinated deformation design method for large ring piece |
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| CN110614295B (en) | 2021-02-23 |
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