CN114309398A - Near-net forming method for high-temperature alloy special-shaped ring forging - Google Patents
Near-net forming method for high-temperature alloy special-shaped ring forging Download PDFInfo
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- CN114309398A CN114309398A CN202011053795.4A CN202011053795A CN114309398A CN 114309398 A CN114309398 A CN 114309398A CN 202011053795 A CN202011053795 A CN 202011053795A CN 114309398 A CN114309398 A CN 114309398A
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- 238000005242 forging Methods 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims abstract description 21
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 9
- 239000000956 alloy Substances 0.000 title claims abstract description 9
- 238000005096 rolling process Methods 0.000 claims abstract description 18
- 238000004080 punching Methods 0.000 claims abstract description 5
- 238000003754 machining Methods 0.000 claims description 12
- 238000001125 extrusion Methods 0.000 claims description 8
- 210000004379 membrane Anatomy 0.000 claims description 5
- 239000012528 membrane Substances 0.000 claims description 5
- 210000002219 extraembryonic membrane Anatomy 0.000 claims description 3
- 239000007769 metal material Substances 0.000 claims description 3
- 230000001131 transforming effect Effects 0.000 claims description 2
- 229910000601 superalloy Inorganic materials 0.000 claims 5
- 239000000463 material Substances 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
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Abstract
The invention discloses a near-net forming method of a high-temperature alloy special-shaped ring forging, which is characterized by comprising the following steps of: designing the shape and size of the forging according to a part drawing, upsetting and punching a bar, carrying out ring rolling, extruding a rectangular ring blank obtained after ring rolling in a tire mold to obtain a special-shaped ring blank, and rolling and forming the special-shaped ring blank. The method adopts a design method of near net shape, and can effectively improve the utilization rate of materials. The method is suitable for the high-temperature alloy special-shaped ring forging of the large-sized case.
Description
Technical Field
The invention relates to a forging forming method, in particular to a near-net forming method of a high-temperature alloy special-shaped ring forging.
Background
The aeroengine casing is an important part of an aeroengine, is a large-size thin-wall part with a large section change, and is made of a material difficult to deform. Conventionally designed cartridge receiver forging, as shown in fig. 1, the design profile is relatively simple, and the structure of the part 1 and the structure of the forging 2 have enlarged machining allowance, so that the processing period of the cartridge receiver is greatly prolonged, and the material utilization rate is about 15-25%.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the method is characterized in that a forging drawing design is carried out according to a part drawing and a near-net-shape design concept, and the forging machining allowance is small.
In order to solve the problems, the near-net forming method of the high-temperature alloy special-shaped ring forging is characterized by comprising the following steps of:
step 1: guiding the part drawing into drawing software, identifying contour points of the part, connecting the identified contour points, and adding machining allowance on the contour to obtain the shape and the size of the forging;
step 2: blanking a metal material into a bar according to a certain specification, and upsetting and punching to obtain a punched ring blank; placing the punched ring blank on a ring rolling machine for ring rolling to obtain a rectangular ring blank;
and step 3: placing the rectangular ring blank on a tire membrane for extrusion deformation to obtain a special-shaped ring blank;
and 4, step 4: sleeving the special-shaped ring blank into a core roller of a ring rolling mill, driving the ring rolling mill to rotate at a certain angular speed, driving the core roller to drive the special-shaped ring blank to feed to a main roller at a certain feeding speed, so that the wall thickness of the special-shaped ring blank is thinned, the outer diameter of the special-shaped ring blank is enlarged, and finally, the special-shaped ring blank is rolled into a special-shaped ring forging.
Furthermore, in the step 1, 23 contour points A-W are identified, the machining allowance at the contour points is 5-10 mm, and the machining allowance of the connecting surface of two adjacent contour points is 3-6 mm.
Further, in the step 2, the thickness of the rectangular ring blank is the maximum thickness of the special-shaped ring blank, the height of the rectangular ring blank is the height of the special-shaped ring blank, and the outer diameter of the rectangular ring blank is the minimum outer diameter of the special-shaped ring blank.
Further, in the step 3, the extrusion deformation of the tire membrane is carried out in two times; firstly, extruding and deforming a rectangular ring blank into a conical ring blank by using a male die with a certain taper; and extruding and transforming the conical ring blank into the special-shaped ring blank by using a male die with the same contour as the inner wall of the special-shaped ring blank and a female die with the same contour as the outer wall of the special-shaped ring blank.
Further, in the step 3, the shape and size of the special-shaped ring blank are designed according to the shape and size of the forging in the forging drawing, and it is required to ensure that the deformation of the forged piece rolled from the special-shaped ring blank is more than 30% in the subsequent ring rolling process.
Further, in the step 4, the angular velocity of the main roll is 0.8 to 1.2rad/s, and the feeding velocity of the core roll is 0.2mm/s to 2.0 mm/s.
Compared with the prior art, the invention has the following beneficial effects:
the near-net forming method of the high-temperature alloy special-shaped ring forging adopts a near-net forming design method, and can effectively improve the material utilization rate. According to statistics, the forming method can achieve nearly 40% of material utilization.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
FIG. 1 is a schematic view of a conventionally designed profiled ring forging;
FIG. 2 is a schematic view of contour point identification of a part;
FIG. 3 is a schematic view of a near net shape profiled ring forging of the present invention;
FIG. 4 is a schematic representation of the near net shape deformed annular forging shape variation of the present invention;
FIG. 5 is a schematic view of the tire membrane of the present invention for preparing a shaped ring blank;
FIG. 6 is a schematic diagram showing the shape change of the shaped ring blank for forming the tire membrane according to the present invention;
fig. 7 is a schematic view of the forming of the profiled ring forging of the present invention.
Detailed Description
The near-net forming method of the high-temperature alloy special-shaped ring forging needs to provide equipment such as a forging heating furnace, a press machine, a ring rolling machine and a manipulator. The specific implementation mode is as follows:
importing the part drawing into drawing software, identifying contour points of the part, identifying 23 contour points A-W, connecting the identified contour points as shown in FIG. 2, adding machining allowance on the contour, wherein the machining allowance at the contour points is 5-10 mm, the machining allowance of the connecting surfaces of two adjacent contour points is 3-6 mm, and obtaining the shape and the size of the forged piece, wherein as shown in FIG. 3, the structure of the forged piece 3 is similar to that of the part 1, and the machining allowance is small;
blanking a metal material into a bar according to a certain specification, processing according to the steps shown in figure 4, and upsetting and punching the bar (1) to obtain a punching ring blank (2); placing the punched ring blank (2) on a ring rolling mill for ring rolling to obtain a rectangular ring blank (3), wherein the thickness of the rectangular ring blank (3) is the maximum thickness of the special-shaped ring blank (4), the height of the rectangular ring blank (3) is the height of the special-shaped ring blank (4), and the outer diameter of the rectangular ring blank (3) is the minimum outer diameter of the special-shaped ring blank (4); placing the rectangular ring blank (3) in a female die of a fetal membrane, and driving a male die to perform extrusion deformation from the upper part to the lower part of an inner hole of the rectangular ring blank (3) to obtain a special-shaped ring blank (4); sleeving the special-shaped ring blank (4) into a core roller of a ring rolling mill, driving the ring rolling mill to rotate at an angular speed of 0.8-1.2 rad/s, and driving the core roller to drive the special-shaped ring blank to feed to a main roller at a feeding speed of 0.2-2.0 mm/s, so that the wall thickness of the special-shaped ring blank is thinned, the outer diameter of the special-shaped ring blank is enlarged, and finally, the special-shaped ring blank is rolled into a special-shaped ring forging (5) as shown in figure 7.
The extrusion deformation of the fetal membrane is carried out twice, as shown in figure 6, a male die with certain taper is used for carrying out extrusion deformation on a rectangular ring blank (a) to form a conical ring blank (b), and then the male die 1 with the same contour as the inner wall of the special-shaped ring blank and a female die 3 with the same contour as the outer wall of the special-shaped ring blank as shown in figure 5 are used for carrying out extrusion deformation on the conical ring blank (b) to form a special-shaped ring blank (c).
Claims (6)
1. A near-net forming method of a high-temperature alloy special-shaped ring forging is characterized by comprising the following steps: the method comprises the following steps:
step 1: guiding the part drawing into drawing software, identifying contour points of the part, connecting the identified contour points, and adding machining allowance on the contour to obtain the shape and the size of the forging;
step 2: blanking a metal material into a bar according to a certain specification, and upsetting and punching to obtain a punched ring blank; placing the punched ring blank on a ring rolling machine for ring rolling to obtain a rectangular ring blank;
and step 3: placing the rectangular ring blank on a tire membrane for extrusion deformation to obtain a special-shaped ring blank;
and 4, step 4: sleeving the special-shaped ring blank into a core roller of a ring rolling mill, driving the ring rolling mill to rotate at a certain angular speed, driving the core roller to drive the special-shaped ring blank to feed to a main roller at a certain feeding speed, so that the wall thickness of the special-shaped ring blank is thinned, the outer diameter of the special-shaped ring blank is enlarged, and finally, the special-shaped ring blank is rolled into a special-shaped ring forging.
2. The near-net forming method of the superalloy profiled ring forging of claim 1, wherein: in the step 1, 23 contour points A-W are identified, the machining allowance at the contour points is 5-10 mm, and the machining allowance of the connecting surface of two adjacent contour points is 3-6 mm.
3. The near-net forming method of the superalloy profiled ring forging of claim 1, wherein: in the step 2, the thickness of the rectangular ring blank is the maximum thickness of the special-shaped ring blank, the height of the rectangular ring blank is the height of the special-shaped ring blank, and the outer diameter of the rectangular ring blank is the minimum outer diameter of the special-shaped ring blank.
4. The near-net forming method of the superalloy profiled ring forging of claim 1, wherein: in the step 3, the extrusion deformation of the fetal membrane is carried out twice; firstly, extruding and deforming a rectangular ring blank into a conical ring blank by using a male die with a certain taper; and extruding and transforming the conical ring blank into the special-shaped ring blank by using a male die with the same contour as the inner wall of the special-shaped ring blank and a female die with the same contour as the outer wall of the special-shaped ring blank.
5. The near-net forming method of the superalloy profiled ring forging of claim 1, wherein: in the step 3, the shape and the size of the special-shaped ring blank are designed according to the shape and the size of the forging in the forging drawing, and the deformation of the forging rolled from the special-shaped ring blank is more than 30% in the subsequent ring rolling process.
6. The near-net forming method of the superalloy profiled ring forging of claim 1, wherein: in the step 4, the angular speed of the main roller is 0.8-1.2 rad/s, and the feeding speed of the core roller is 0.2-2.0 mm/s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011053795.4A CN114309398A (en) | 2020-09-29 | 2020-09-29 | Near-net forming method for high-temperature alloy special-shaped ring forging |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011053795.4A CN114309398A (en) | 2020-09-29 | 2020-09-29 | Near-net forming method for high-temperature alloy special-shaped ring forging |
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| CN114309398A true CN114309398A (en) | 2022-04-12 |
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| CN202011053795.4A Pending CN114309398A (en) | 2020-09-29 | 2020-09-29 | Near-net forming method for high-temperature alloy special-shaped ring forging |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116441466A (en) * | 2023-03-24 | 2023-07-18 | 江苏翔能科技发展有限公司 | Method for cooperatively determining size of complex conical ring piece forming process chain blank and die |
-
2020
- 2020-09-29 CN CN202011053795.4A patent/CN114309398A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116441466A (en) * | 2023-03-24 | 2023-07-18 | 江苏翔能科技发展有限公司 | Method for cooperatively determining size of complex conical ring piece forming process chain blank and die |
| CN116441466B (en) * | 2023-03-24 | 2023-11-17 | 江苏翔能科技发展有限公司 | Method for cooperatively determining size of complex conical ring piece forming process chain blank and die |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20220412 |
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| WD01 | Invention patent application deemed withdrawn after publication |