CN110935756B - Shaping tool used in manufacturing process of ultra-large integral ring forging and using method - Google Patents
Shaping tool used in manufacturing process of ultra-large integral ring forging and using method Download PDFInfo
- Publication number
- CN110935756B CN110935756B CN201911118528.8A CN201911118528A CN110935756B CN 110935756 B CN110935756 B CN 110935756B CN 201911118528 A CN201911118528 A CN 201911118528A CN 110935756 B CN110935756 B CN 110935756B
- Authority
- CN
- China
- Prior art keywords
- supporting rod
- ring
- ring piece
- supporting
- support
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
- B21D3/14—Recontouring
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
The invention belongs to the technical field of manufacturing of large-scale integral ring forgings, and particularly relates to a shaping tool used in the manufacturing process of an ultra-large-scale integral ring forging, and a use method of the tool. The shaping tool comprises an inner support ring piece, wherein a plurality of support rods are arranged on the inner wall of the inner support ring piece, and the other ends of all the support rods are connected with a reinforcing cylinder positioned at the central position of the inner support ring piece; the outer wall of the inner support ring piece is provided with a plurality of support mechanisms, each support mechanism has the same structure, and each support mechanism consists of a support leg, an adjusting cushion block and an arc-shaped rounding block from bottom to top. The shaping tool for the ultra-large integral ring forging provided by the invention has the advantages that the ultra-large ring which is scrapped is shaped to meet the machining size, particularly, the integral carbon steel ring with the length of 10 meters or more than 10 meters can be shaped to the required size, and the huge economic loss is avoided. Meanwhile, the product allowance can be reduced, so that the consumption of raw materials is reduced, and great economic significance is achieved.
Description
Technical Field
The invention belongs to the technical field of manufacturing of large-scale integral ring forgings, and particularly relates to a shaping tool used in the manufacturing process of an ultra-large integral ring forging; still relate to the application method of foretell frock.
Background
The maximum integral forged ring commonly seen at present is 10 meters, and the weight of the large ring piece is generally more than 80 tons. Because the ring piece has large size and weight and the ovality is very difficult to control, once the ring piece is out of tolerance, the blank is scrapped, and huge economic loss is caused. At present, the shaping tool for the oversized ring forging with the length of more than 10 meters is rare, so that the shaping tool suitable for manufacturing the oversized ring forging needs to be invented.
Disclosure of Invention
In order to solve the technical problem, the invention provides a shaping tool used in the manufacturing process of an ultra-large integral ring forging; the invention further provides a using method of the tool.
The shaping tool used in the manufacturing process of the ultra-large integral ring forging comprises an inner supporting ring piece, wherein a plurality of supporting rods are arranged on the inner wall of the inner supporting ring piece, and the other ends of all the supporting rods are connected with a reinforcing cylinder positioned at the central position of the inner supporting ring piece; the outer wall of the inner support ring piece is provided with a plurality of support mechanisms, each support mechanism has the same structure, and each support mechanism consists of a support leg, an adjusting cushion block and an arc-shaped rounding block from bottom to top.
The structure of the arc rounding block is as follows: the arc-shaped rounding block comprises a lower bottom surface, a front side surface, a rear side surface, a left side surface, a right side surface and an arc-shaped upper top surface, and the radian of the arc-shaped rounding block is determined according to the normal rolling of the ring piece to the inner diameter; for example, the process requires 13000 mm as the minimum point of the actual inner diameter ellipse with the inner diameter of 14800mm, the radian is processed according to 14800, and the width of the arc-shaped round block 1 is the same as the height of the ring piece; the ratio of the distance from the lower bottom surface of the arc-shaped rounding block to the lowermost end of the arc-shaped upper top surface to the length of the lower bottom surface is 2: 5.
the adjusting cushion block is of a cuboid structure, and the ratio of the length to the height of the adjusting cushion block is 100: 1; the width is the same as the ring height by ring height.
The diameter of the ultra-large integral ring forging is more than or equal to 10 meters.
The number of the supporting mechanisms is even, and the corresponding supporting mechanisms are distributed in central symmetry around the reinforcing cylinder.
The supporting rods are distributed in pairs in a central symmetry mode relative to the reinforcing cylinder.
The distance between adjacent supporting mechanisms is equal.
The support rods comprise a first support rod, a second support rod, a third support rod, a fourth support rod, a fifth support rod and a sixth support rod;
the first supporting rod and the fourth supporting rod are on the same straight line; the second supporting rod and the fifth supporting rod are on the same straight line; the third supporting rod and the sixth supporting rod are on the same straight line.
Six supporting mechanisms are respectively arranged on the outer wall of the inner supporting ring piece at equal intervals at the position corresponding to the first supporting rod, the position corresponding to the second supporting rod, the position corresponding to the third supporting rod, the position corresponding to the fourth supporting rod, the position corresponding to the fifth supporting rod and the position corresponding to the sixth supporting rod.
Six supporting mechanisms are further arranged between every two supporting mechanisms on the outer wall of the inner supporting ring piece.
The use method of the shaping tool used in the manufacturing process of the ultra-large integral ring forging comprises the following specific steps: calculating the size of the hot ring piece and the correction size of the short axis of the ellipse according to the thermal expansion coefficients of different materials of the large ring piece and the size of the ellipse of the ring piece; adjusting the outer diameter of the shaping tool by increasing or decreasing the number of the adjusting cushion blocks, and adjusting the calculated shape correcting position to clamp the shaping tool on the elliptical hot short shaft; along with the reduction of the temperature, the ring shrinks, the shaping tool props against the minor axis of the ring, the shrinkage rate of the minor axis of the ellipse is inhibited, and the ellipse amount of the ring is reduced; and after the ring is cooled, taking out the ring.
The conventional small ring part shape correction scheme is to enlarge the inner diameter of the ring part by using hydraulic external force to perform shape correction. If a hydraulic system is adopted for shape correction, the ring needs to be corrected after being cooled in order to prevent danger due to the existence of hydraulic oil, and the cold-state deformation resistance of the ring is dozens of times of that of the hot-state ring. For example, q345 thermal state yield is about 20Mpa, cold state yield is at least 345Mpa, if 16 m ring piece shape correction in a cold state is realized, an oversized mechanical system needs to be manufactured, the strength of the used steel is higher than that of common structural steel, and the mechanical system close to 16 m cannot deform on the premise of ensuring the shape correction force. While a hydraulic cylinder providing a sizing force even requires pressure of tens of thousands of tons; moreover, if one of the multiple ejection mechanisms of the conventional system has a problem, the matching is not good, and the extra force is large, the ring can be directly damaged locally, so that the ring is scrapped. Moreover, the operation is complex, the realization is difficult and the investment is large. Therefore, conventional systems are not suitable for reshaping large rings, and therefore cold-state reshaping generally applies small rings.
After cold-state sizing, the residual internal stress of the ring piece is large, and after heat treatment and machining, stress release is uneven, so that deformation is more likely to occur compared with hot-state sizing of the ring piece. The scheme of the invention adopts shaping measures which are completely different from the original conventional scheme. The shaping tool provided by the invention fully utilizes the characteristic that the ring is easy to deform when being in a hot state after rolling, and reduces the ovality of the ring through the shaping tool when the ring is in the hot state. By the aid of the method, the ellipse of the ring piece can be obviously reduced, so that the weight of raw materials is reduced, and the utilization rate of the materials is improved.
The shaping tool for the ultra-large integral ring forging has the advantages that the ultra-large integral ring forging shaping tool provided by the invention can be used for shaping the ultra-large ring which is scrapped to meet the machining size, particularly shaping the integral carbon steel ring of 10 meters or more to the required size, and avoiding huge economic loss. Meanwhile, the product allowance can be reduced, so that the consumption of raw materials is reduced, and great economic significance is achieved.
Drawings
Fig. 1 is a schematic structural view of a shaping tool according to embodiment 1 of the present invention;
fig. 2 is a schematic side view of a shaping tool in embodiment 1 of the present invention;
FIG. 3 is a front view of an arc-shaped rounding block in embodiment 1 of the present invention;
FIG. 4 is a side view of an arc-shaped round block in embodiment 1 of the present invention;
fig. 5 is a schematic structural view of a shaping tool in embodiment 2 of the present invention;
in the figure, 1-arc rounding block; 2, adjusting a cushion block; 3-supporting legs; 4-inner support ring; 5-reinforcing cylinders; 6-supporting rods; 101. 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112-support mechanisms; 601-a first support bar; 602-a first support bar; 603-a first support bar; 604-a first support bar; 605-a first support bar; 606-a first support bar; 12-arc upper top surface, 13-front side surface, 14-lower bottom surface, 15-back side surface, 16-left side surface, 17-right side surface.
Detailed Description
The invention will be further described with reference to the accompanying drawings and specific embodiments so that those skilled in the art may better understand the invention, but the invention is not limited thereto.
Example 1
A shaping tool used in the manufacturing process of an ultra-large integral ring forging (with the diameter of 16 meters) comprises an inner support ring piece 4, wherein a plurality of support rods 6 are arranged on the inner wall of the inner support ring piece 4, and the other ends of all the support rods 6 are connected with a reinforcing cylinder 5 positioned at the central position of the inner support ring piece 4; the outer wall of the inner support ring piece 4 is provided with a plurality of support mechanisms, each support mechanism has the same structure, and each support mechanism consists of a support leg 3, an adjusting cushion block 2 and an arc-shaped rounding block 1 from bottom to top.
The structure of the arc rounding block 1 is as follows: the arc rounding block 1 comprises a lower bottom surface 14, a front side surface 13, a rear side surface 15, a left side surface 16, a right side surface 17 and an arc upper top surface, and the radian of the arc rounding block 1 is determined according to the normal rolling of the ring piece to the inner diameter; for example, 13000 is the minimum point of an actual inner diameter ellipse with the inner diameter of 14800mm as required by the process, the radian is processed according to 14800, and the width of the arc-shaped round block 1 is the same as the height of the ring piece; the ratio of the distance from the lower bottom surface 14 of the arc-shaped rounding block 1 to the lowermost end of the arc-shaped upper top surface 12 to the length of the lower bottom surface 14 is 2: 5.
the adjusting cushion block is of a cuboid structure, and the ratio of the length to the height of the adjusting cushion block is 100: 1; the width is the same as the ring height by ring height. The support rods 6 comprise a first support rod, a second support rod, a third support rod, a fourth support rod, a fifth support rod and a sixth support rod;
the first support bar 601 and the fourth support bar 604 are on the same straight line; the second support bar 602 is in the same line with the fifth support bar 605; the third supporting bar 603 and the sixth supporting bar 606 are on the same straight line.
Six supporting mechanisms 101, 103, 105, 107, 109 and 111 are respectively arranged on the outer wall of the inner support ring member 4 at equal intervals at a position corresponding to the first supporting rod 601, a position corresponding to the second supporting rod 602, a position corresponding to the third supporting rod 603, a position corresponding to the fourth supporting rod 604, a position corresponding to the fifth supporting rod 605 and a position corresponding to the sixth supporting rod 606;
and six supporting mechanisms 102, 104, 106, 108, 110 and 112 are arranged between every two supporting mechanisms on the outer wall of the inner support ring member 4.
The use method of the shaping tool used in the manufacturing process of the ultra-large integral ring forging piece comprises the following specific steps: calculating the size of the hot ring piece and the correction size of the short axis of the ellipse according to the thermal expansion coefficients of different materials of the large ring piece and the size of the ellipse of the ring piece; adjusting the outer diameter of the shaping tool by increasing or decreasing the number of the adjusting cushion blocks, and adjusting the calculated shape correcting position to clamp the shaping tool on the elliptical hot short shaft; along with the reduction of the temperature, the ring shrinks, the shaping tool props against the short axis of the ring, the shrinkage rate of the short axis of the ellipse is inhibited, and the ellipse amount of the ring is reduced; and taking out the ring after the ring is cooled. According to the shaping tool, the ring is in a hot state for shaping, the characteristic that the ring is easy to deform in the hot state after rolling is fully utilized, and the ovality of the ring is reduced through the shaping tool when the ring is in the hot state. By the aid of the method, the ellipse of the ring piece can be obviously reduced, so that the weight of raw materials is reduced, and the utilization rate of the materials is improved.
Example 2
The difference from embodiment 1 is that six support mechanisms 101, 103, 105, 107, 109, 111 are provided on the outer wall of the inner support ring member 4 at equal intervals at positions corresponding to the first support bar 601, the second support bar 602, the third support bar 603, the fourth support bar 604, the fifth support bar 605, and the sixth support bar 606, respectively. The number of supporting mechanisms in embodiment 2 is only half of that in embodiment 1, and the rest is the same as that in embodiment 1.
It is within the scope of the present invention to reduce the number of changes of the support mechanism as in embodiment 2, and to increase the number of changes of the support mechanism as appropriate.
In actual production, the 12m ring rolled at a certain time exceeds the reserved blank allowance due to the oval shape of the ring of 110mm, the finished product size cannot be processed, and the ring of about 100 tons is scrapped.
In the above situation, the inventor successfully processes the product by reducing the ellipse to 30mm through the shaping measure. The large ring piece is heavy in weight, large in size, difficult in rolling process and particularly difficult to control ellipticity, the ring piece with the diameter of more than 10m is very easy to appear when the ellipse is more than 100mm, and once the ellipse is too large and cannot be processed, one ring piece is scrapped, so that huge economic loss is caused. The inventor successfully shapes the large ring piece which is to be scrapped to the size meeting the requirement through the measure for many times, so that the scrappage rate is greatly reduced, and huge economic loss is recovered.
Claims (2)
1. The shaping tool used in the manufacturing process of the ultra-large integral ring forging is characterized by comprising an inner support ring piece (4), wherein a plurality of support rods (6) are arranged on the inner wall of the inner support ring piece (4), and the other ends of all the support rods (6) are connected with a reinforcing cylinder (5) positioned at the central position of the inner support ring piece (4); the outer wall of the inner support ring piece (4) is provided with a plurality of support mechanisms, each support mechanism has the same structure, and each support mechanism consists of a support leg (3), an adjusting cushion block (2) and an arc-shaped rounding block (1) from bottom to top;
the structure of the arc rounding block (1) is as follows: the arc-shaped rounding block (1) comprises a lower bottom surface (14), a front side surface (13), a rear side surface (15), a left side surface (16), a right side surface (17) and an arc-shaped upper top surface, and the width of the arc-shaped rounding block (1) is the same as the height of the ring piece; the ratio of the distance from the lower bottom surface (14) of the arc-shaped rounding block (1) to the lowermost end of the arc-shaped upper top surface (12) to the length of the lower bottom surface (14) is 2: 5;
the adjusting cushion block is of a cuboid structure, and the ratio of the length to the height of the adjusting cushion block is 100: 1; the width is the same as the height of the ring piece according to the height of the ring piece;
the diameter of the ultra-large integral ring forging is greater than or equal to 10 meters;
the supporting rods (6) are distributed in pairs in central symmetry with respect to the reinforcing cylinder (5);
the supporting rods (6) comprise a first supporting rod, a second supporting rod, a third supporting rod, a fourth supporting rod, a fifth supporting rod and a sixth supporting rod;
the first supporting rod and the fourth supporting rod are on the same straight line; the second supporting rod and the fifth supporting rod are on the same straight line; the third supporting rod and the sixth supporting rod are on the same straight line;
six supporting mechanisms (101, 103, 105, 107, 109 and 111) are respectively arranged on the outer wall of the inner supporting ring piece (4) at positions corresponding to the first supporting rod, the second supporting rod, the third supporting rod, the fourth supporting rod, the fifth supporting rod and the sixth supporting rod at equal intervals;
six supporting mechanisms (102, 104, 106, 108, 110 and 112) are arranged between every two supporting mechanisms on the outer wall of the inner supporting ring piece (4);
the using method of the shaping tool comprises the following steps: calculating the size of the hot ring piece and the correction size of the short axis of the ellipse according to the thermal expansion coefficients of different materials of the large ring piece and the size of the ellipse of the ring piece; adjusting the outer diameter of the shaping tool by increasing or decreasing the number of the adjusting cushion blocks, and adjusting the calculated shape correcting position to clamp the shaping tool on the elliptical hot short shaft; along with the reduction of the temperature, the ring shrinks, the shaping tool props against the short axis of the ring, the shrinkage rate of the short axis of the ellipse is inhibited, and the ellipse amount of the ring is reduced; and taking out the ring after the ring is cooled.
2. The use method of the shaping tool in the manufacturing process of the ultra-large integral ring forging as claimed in claim 1, wherein the size of the hot ring and the shape correction size of the short axis of the ellipse are calculated according to the thermal expansion coefficients of different materials of the large ring and the size of the ellipse of the ring; adjusting the outer diameter of the shaping tool by increasing or decreasing the number of the adjusting cushion blocks, and adjusting the calculated shape correcting position to clamp the shaping tool on the elliptical hot short shaft; along with the reduction of the temperature, the ring shrinks, the shaping tool props against the short axis of the ring, the shrinkage rate of the short axis of the ellipse is inhibited, and the ellipse amount of the ring is reduced; taking out the ring piece after the ring piece is cooled;
the shaping tool used in the manufacturing process of the ultra-large integral ring forging comprises an inner support ring piece (4), a plurality of support rods (6) are arranged on the inner wall of the inner support ring piece (4), and the other ends of all the support rods (6) are connected with a reinforcing cylinder (5) located at the central position of the inner support ring piece (4); the outer wall of the inner support ring piece (4) is provided with a plurality of support mechanisms, each support mechanism has the same structure, and each support mechanism consists of a support leg (3) from bottom to top, an adjusting cushion block (2) and an arc-shaped rounding block (1);
the structure of the arc rounding block (1) is as follows: the arc-shaped rounding block (1) comprises a lower bottom surface (14), a front side surface (13), a rear side surface (15), a left side surface (16), a right side surface (17) and an arc-shaped upper top surface, and the width of the arc-shaped rounding block (1) is the same as the height of the ring piece; the ratio of the distance from the lower bottom surface (14) of the arc-shaped rounding block (1) to the lowermost end of the arc-shaped upper top surface (12) to the length of the lower bottom surface (14) is 2: 5;
the adjusting cushion block is of a cuboid structure, and the ratio of the length to the height of the adjusting cushion block is 100: 1; the width is the same as the height of the ring piece according to the height of the ring piece;
the diameter of the ultra-large integral ring forging is greater than or equal to 10 meters;
the supporting rods (6) are distributed in pairs in central symmetry with respect to the reinforcing cylinder (5);
the supporting rods (6) comprise a first supporting rod, a second supporting rod, a third supporting rod, a fourth supporting rod, a fifth supporting rod and a sixth supporting rod;
the first supporting rod and the fourth supporting rod are on the same straight line; the second supporting rod and the fifth supporting rod are on the same straight line; the third supporting rod and the sixth supporting rod are on the same straight line;
six supporting mechanisms (101, 103, 105, 107, 109 and 111) are respectively arranged on the outer wall of the inner supporting ring piece (4) at positions corresponding to the first supporting rod, the second supporting rod, the third supporting rod, the fourth supporting rod, the fifth supporting rod and the sixth supporting rod at equal intervals;
and six supporting mechanisms (102, 104, 106, 108, 110, 112) are arranged between every two supporting mechanisms on the outer wall of the inner supporting ring member (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911118528.8A CN110935756B (en) | 2019-11-15 | 2019-11-15 | Shaping tool used in manufacturing process of ultra-large integral ring forging and using method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911118528.8A CN110935756B (en) | 2019-11-15 | 2019-11-15 | Shaping tool used in manufacturing process of ultra-large integral ring forging and using method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110935756A CN110935756A (en) | 2020-03-31 |
| CN110935756B true CN110935756B (en) | 2022-09-16 |
Family
ID=69906673
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911118528.8A Active CN110935756B (en) | 2019-11-15 | 2019-11-15 | Shaping tool used in manufacturing process of ultra-large integral ring forging and using method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110935756B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112122515B (en) * | 2020-07-30 | 2022-11-11 | 伊莱特能源装备股份有限公司 | Process for rolling and shaping ultra-large integral ring forging |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107755955A (en) * | 2017-11-06 | 2018-03-06 | 上海交通大学 | Integral type for component inner support inner support chucking device free of demolition |
| CN109266982A (en) * | 2018-11-28 | 2019-01-25 | 西南铝业（集团）有限责任公司 | A kind of timeliness shaping methods of large aluminum alloy ring |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4360721B2 (en) * | 1999-11-22 | 2009-11-11 | 第一高周波工業株式会社 | Ring material straightening method |
| CN2794669Y (en) * | 2005-03-25 | 2006-07-12 | 安徽华光玻璃集团有限公司 | Circule corrector for large caliber pipe butt-joint |
| CN201361644Y (en) * | 2009-01-20 | 2009-12-16 | 太原市阳光园不锈钢制品有限公司 | Pipe mouth rounding device of heavy-caliber steel pipe |
| JP2014018828A (en) * | 2012-07-18 | 2014-02-03 | Nippon Steel & Sumikin Engineering Co Ltd | Device for correcting pipe material |
| CN203155771U (en) * | 2012-09-26 | 2013-08-28 | 安徽海螺川崎装备制造有限公司 | Checking circle tooling for cylinder body |
| KR101455515B1 (en) * | 2013-02-27 | 2014-10-27 | 현대제철 주식회사 | Jig for correcting roundness of pipe |
| CN104492865A (en) * | 2014-11-18 | 2015-04-08 | 四川邮科通信技术有限公司 | Roller flexibility correction device with balancing device |
| CN204486509U (en) * | 2014-12-25 | 2015-07-22 | 渤海船舶重工有限责任公司 | The orthopedic supporting device of circular cylinder body |
| CN205966876U (en) * | 2016-08-08 | 2017-02-22 | 武汉市林美封头制造有限公司 | Pressure vessel drum school circle device |
| CN206405213U (en) * | 2016-12-23 | 2017-08-15 | 河北天鸿游乐设备有限责任公司 | A kind of circular correction machine |
-
2019
- 2019-11-15 CN CN201911118528.8A patent/CN110935756B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107755955A (en) * | 2017-11-06 | 2018-03-06 | 上海交通大学 | Integral type for component inner support inner support chucking device free of demolition |
| CN109266982A (en) * | 2018-11-28 | 2019-01-25 | 西南铝业（集团）有限责任公司 | A kind of timeliness shaping methods of large aluminum alloy ring |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110935756A (en) | 2020-03-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101439350B (en) | Method for producing seamless steel pipe for producing gas cylinder with heavy caliber for hauled vehicle | |
| CN101912939B (en) | Extruding, upsetting and moulding die and corresponding upsetting method | |
| CN104907473A (en) | Method for hot processing of large die flat steel forged piece | |
| CN107443019B (en) | The cold duplex forging manufacturing process of temperature of deep hole input shaft | |
| CN105568195A (en) | Preparation method for high-accuracy and high-strength titanium alloy seamless tubes | |
| CN110935756B (en) | Shaping tool used in manufacturing process of ultra-large integral ring forging and using method | |
| CN108080547B (en) | A kind of long-axis forging prefabricated blank method and device | |
| CN112589021A (en) | Manufacturing method of IN718 alloy double-flange high-barrel casing ring piece | |
| US20040139781A1 (en) | Method for producing forgings mainly made of metals and alloys of titanium group and a forging system for carrying out said method | |
| CN108746440B (en) | A kind of high cylindrical forged piece segmentation milling method of large-sized high-temperature alloy | |
| CN109773097B (en) | Earring forging forming method | |
| CN105290281B (en) | The production method of the nickeliferous ring forging of large thick-wall | |
| CN101444792B (en) | Method for producing seamless steel pipes used for large-diameter high-pressure gas cylinders | |
| CN113953423B (en) | Hollow diameter-reducing extrusion forming process method for stainless steel thick-wall ultra-large half-cone-angle special-shaped ring forging with inner flange structure | |
| CN107225150B (en) | A kind of processing method of variable cross-section track connecting plate | |
| CN112045124B (en) | Special core rod for cylinder barrel inner hole concave step and forming method | |
| CN105363980A (en) | Method for preparing forged SHSS (Semi-high Speed Steel) rolling mill roll by radial rotary precision forging | |
| CN115055617A (en) | Integral hot-working forming method for oil cylinder | |
| CN109807281B (en) | K3 brake beam end forging process | |
| CN212944648U (en) | Novel stretch reducing machine with polygonal hole pattern | |
| CN104690199B (en) | The free forging method of petroleum drilling and mining blowout preventer body | |
| CN210547758U (en) | Special forging and pressing mould for cylinder barrel in coal mine hydraulic support | |
| CN110788263B (en) | Manufacturing process of stainless steel oil rail forging | |
| CN210547757U (en) | Special forging and pressing mould for outer cylinder barrel of coal mine hydraulic support | |
| CN201728321U (en) | Extrusion upsetting mold |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |