CN114289659A - Manufacturing method of TC4 titanium alloy cone-shaped forging for aeroengine - Google Patents
Manufacturing method of TC4 titanium alloy cone-shaped forging for aeroengine Download PDFInfo
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- CN114289659A CN114289659A CN202111672060.4A CN202111672060A CN114289659A CN 114289659 A CN114289659 A CN 114289659A CN 202111672060 A CN202111672060 A CN 202111672060A CN 114289659 A CN114289659 A CN 114289659A
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- 238000005242 forging Methods 0.000 title claims abstract description 59
- 229910001069 Ti alloy Inorganic materials 0.000 title claims abstract description 34
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 31
- 238000007493 shaping process Methods 0.000 claims abstract description 45
- 238000004080 punching Methods 0.000 claims abstract description 21
- 238000000034 method Methods 0.000 claims abstract description 19
- 238000005096 rolling process Methods 0.000 claims abstract description 5
- 238000010438 heat treatment Methods 0.000 claims abstract description 4
- 238000007514 turning Methods 0.000 claims abstract description 4
- 238000000465 moulding Methods 0.000 claims description 4
- 230000008569 process Effects 0.000 description 6
- 239000002699 waste material Substances 0.000 description 4
- 239000002994 raw material Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
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Abstract
The invention discloses a method for manufacturing TC4 titanium alloy cone-shaped forgings for an aeroengine, which comprises the following steps: carrying out forging design according to the size of the TC4 titanium alloy conical cylindrical part, and designing a die tool according to the designed forging size; the die tool comprises a forming external die, a punching core, a shaping external die and a shaping internal die; drawing out the blank and rolling the blank to a specified size to obtain a forged circle; placing the forging circle into a forming external mold for upsetting, and punching by using a punching core to obtain a pre-forged piece; placing the pre-forged piece into a shaping outer die, placing a shaping inner die into the punched hole of the pre-forged piece for shaping, and after shaping is finished, turning for 180 degrees and demoulding to obtain a rough forged piece; further shaping the rough forging to obtain a fine forging; and carrying out heat treatment on the finish forging to obtain the TC4 titanium alloy cone-shaped forging. The manufacturing method can effectively control the quality consistency in the manufacturing process of the product, reduce the quality loss and the production cost, effectively shorten the production period and improve the production efficiency.
Description
Technical Field
The invention relates to the technical field of forging manufacturing, in particular to a manufacturing method of a TC4 titanium alloy cone-shaped forging for an aeroengine.
Background
The new generation of aircraft engine has the characteristics of light weight, long service life, quick response and the like, in order to reduce weight and improve reliability, the use proportion of titanium alloy in the advanced aircraft engine is higher and higher, the use proportion of titanium alloy in the fourth generation of aircraft engine reaches 40%, wherein the most used material is TC4 titanium alloy, and other titanium alloys also include TA7, TA19 and the like. The titanium alloy has the advantages of high strength, high specific strength, good corrosion resistance, high service temperature and the like; the titanium alloy hot forming has the characteristics of high forming efficiency, suitability for batch industrial production and the like, and is the most widely applied forming technology in aviation manufacturing of all countries in the world.
The TC4 titanium alloy cone-shaped forged part is an important force-bearing part of an aeroengine, and the shape of the part is shown in figure 1. The main specification of the part product is phi 668.3/phi 230 x 415, and the part product is characterized by large weight, deep inner cylinder, large cross section change of the upper and lower sections of the part, and difficult direct molding by a ring rolling machine. At present, the free forging forming method is mainly adopted for production, and the design drawing of an original forging piece is shown in figure 2; the method has two disadvantages: firstly, the product needs to meet the requirements of HB5432 and GJB2218A II production and acceptance, and the product quality stability is poor; secondly, the process margin is larger, and the material utilization rate is lower. Therefore, certain methods are needed to improve and optimize the production process of the forged piece, reduce the consumption of raw materials and stabilize the product quality.
Disclosure of Invention
In order to solve the technical problems, the invention aims to provide a method for manufacturing a TC4 titanium alloy cone-shaped forging for an aeroengine; the manufacturing method can solve the problem of high raw material cost caused by large allowance of the traditional free forging forming process, can effectively reduce resource waste and energy waste caused by repair, can effectively control quality consistency in the product manufacturing process, reduces quality loss, effectively shortens the production period and improves the production efficiency.
In order to achieve the technical purpose and achieve the technical effect, the invention is realized by the following technical scheme:
a manufacturing method of TC4 titanium alloy cone-shaped forgings for aeroengines comprises the following steps:
a. carrying out forging design according to the size of the TC4 titanium alloy conical cylindrical part, and designing a die tool according to the designed forging size; the die tool comprises a forming external die, a punching core, a shaping external die and a shaping internal die;
b. drawing out the blank and rolling the blank to a specified size to obtain a forged circle;
c. b, placing the forging circle obtained in the step b into a forming external mold for upsetting, punching by using a punching core, and leveling to obtain a pre-forged piece;
d. c, placing the pre-forged piece obtained in the step c into a shaping outer die, placing a shaping inner die into the punched hole of the pre-forged piece, shaping, and turning for 180 degrees to demould after shaping is finished to obtain a rough forged piece;
e. further shaping the rough forging to obtain a fine forging;
f. and carrying out heat treatment on the finish forging to obtain the TC4 titanium alloy cone-shaped forging.
Furthermore, the forged piece designed in the step a is of a conical cylinder structure, and the diameter of the large head end outer diameter, the small head end outer diameter and the small head end inner hole of the forged piece are approximately equal to the diameter of the large head end outer diameter, the small head end outer diameter and the small head end inner hole corresponding to the TC4 titanium alloy conical cylinder part.
Further, the molding time of step b is 3 min.
Further, the forming external mold and the shaping external mold are respectively provided with tapered holes; b, placing the forging circle obtained in the step b into a tapered hole of a forming external mold for upsetting, and placing the pre-forged piece obtained in the step c into a tapered hole of a shaping external mold for shaping; the shaping internal mold and the punching core are both conical structures.
Furthermore, the diameter of the small end of the punching core is 190 mm.
The invention has the beneficial effects that:
the manufacturing method reasonably designs the forging, the forming external mold, the shaping internal mold and the punching core, and obtains the TC4 titanium alloy conical forging for the aeroengine through the matching of the mold tooling and the reasonable die forging process;
the manufacturing method can solve the problem of high raw material cost caused by large allowance of the traditional free forging forming process, can effectively reduce resource waste and energy waste caused by repair, can effectively control quality consistency in the product manufacturing process, reduces quality loss, effectively shortens the production period and improves the production efficiency.
Drawings
FIG. 1 is a schematic structural diagram of a TC4 titanium alloy cone-shaped part for an aeroengine.
Fig. 2 is a structural view of a forging design of a free forging process in the prior art.
FIG. 3 is a design structure view of a forging of the present invention.
Fig. 4 is a design structure view of the molding outer die in the present invention.
Fig. 5 is a design structure view of the punching core of the present invention.
Fig. 6 is a design structure view of the shaping outer mold in the present invention.
Fig. 7 is a design structure diagram of the shaping inner mold of the present invention.
Detailed Description
The following detailed description of the preferred embodiments of the present invention, taken in conjunction with the accompanying drawings, will make the advantages and features of the invention easier to understand by those skilled in the art, and thus will clearly and clearly define the scope of the invention.
The invention provides a method for manufacturing a TC4 titanium alloy cone-shaped forging for an aeroengine, which comprises the following steps:
a. carrying out forging design according to the size of the TC4 titanium alloy conical cylindrical part, and designing a die tool according to the designed forging size; the die tool comprises a forming external die, a punching core, a shaping external die and a shaping internal die;
as shown in fig. 1, the sizes of TC4 titanium alloy cone-shaped parts for the aeroengine are respectively as follows: the outer diameter of the large end is 670mm, the outer diameter of the small end is 368mm, the height is 415mm, the diameter of the inner hole of the small end is 230mm, and the diameter of the inner hole of the large end is 561 mm;
designing a forging according to the size specification of the part, wherein the forging has a structure shown in FIG. 3, the forging is a conical cylindrical structure, the outer diameter of the large end of the forging is 670.44mm, the outer diameter of the small end of the forging is 368.44mm, the diameter of the inner hole of the large end is 532.1mm, the diameter of the inner hole of the small end is 230mm, and the height is 415 mm;
the structure of the forming external mold is shown in FIG. 4, the height of the forming external mold is 435mm, the outer diameter is 1100mm, the diameter of the large head end of the internal tapered hole is 578mm, and the diameter of the small head end is 393 mm;
the structure of the punching core is shown in FIG. 5, the punching core is in a conical structure, the height of the punching core is 435mm, the diameter of the large head end is 235.59mm, and the diameter of the small head end is 190 mm;
the structure of the shaping external mold is shown in FIG. 6, the height of the shaping external mold is 445mm, the external diameter is 1100mm, the diameter of the large head end of the internal taper hole is 716mm, and the diameter of the small head end is 392 mm;
the structure of the shaping inner die is shown in fig. 7, the shaping inner die is a conical structure, the diameter of a large head end is 512.59mm, the diameter of a small head end is 189mm, and the height is 445 mm;
b. drawing out the blank and rolling the blank to a specified size to obtain a forged circle, wherein the forming time is 3 min;
c. b, placing the forging circle obtained in the step b into a forming external mold for upsetting, punching by using a punching core, and leveling to obtain a pre-forged piece;
d. c, placing the pre-forged piece obtained in the step c into a shaping outer die, placing a shaping inner die into the punched hole of the pre-forged piece, shaping, and turning for 180 degrees to demould after shaping is finished to obtain a rough forged piece; before the shaping internal mold is used, the surface of the shaping internal mold is coated with a lubricant in advance so as to be convenient for demolding;
e. further shaping the rough forging to obtain a fine forging;
f. and carrying out heat treatment on the finish forging to obtain the TC4 titanium alloy cone-shaped forging.
And carrying out subsequent machining treatment on the obtained TC4 titanium alloy cone-shaped forging to obtain a TC4 titanium alloy cone-shaped part product for the aeroengine.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (5)
1. A manufacturing method of TC4 titanium alloy cone-shaped forgings for aeroengines is characterized by comprising the following steps:
a. carrying out forging design according to the size of the TC4 titanium alloy conical cylindrical part, and designing a die tool according to the designed forging size; the die tool comprises a forming external die, a punching core, a shaping external die and a shaping internal die;
b. drawing out the blank and rolling the blank to a specified size to obtain a forged circle;
c. b, placing the forging circle obtained in the step b into a forming external mold for upsetting, punching by using a punching core, and leveling to obtain a pre-forged piece;
d. c, placing the pre-forged piece obtained in the step c into a shaping outer die, placing a shaping inner die into the punched hole of the pre-forged piece, shaping, and turning for 180 degrees to demould after shaping is finished to obtain a rough forged piece;
e. further shaping the rough forging to obtain a fine forging;
f. and carrying out heat treatment on the finish forging to obtain the TC4 titanium alloy cone-shaped forging.
2. The method for manufacturing the TC4 titanium alloy cone-shaped forging for the aeroengine according to claim 1, wherein the method comprises the following steps: the forged piece designed in the step a is of a conical cylindrical structure, and the outer diameter of the large head end, the outer diameter of the small head end and the diameter of the inner hole of the small head end of the forged piece are approximately equal to the outer diameter of the large head end, the outer diameter of the small head end and the diameter of the inner hole of the small head end corresponding to the TC4 titanium alloy conical cylindrical part.
3. The method for manufacturing the TC4 titanium alloy cone-shaped forging for the aeroengine according to claim 1, wherein the method comprises the following steps: the molding time of step b is 3 min.
4. The method for manufacturing the TC4 titanium alloy cone-shaped forging for the aeroengine according to claim 1, wherein the method comprises the following steps: the forming external mold and the shaping external mold are respectively provided with a tapered hole; b, placing the forging circle obtained in the step b into a tapered hole of a forming external mold for upsetting, and placing the pre-forged piece obtained in the step c into a tapered hole of a shaping external mold for shaping; the shaping internal mold and the punching core are both conical structures.
5. The method for manufacturing the TC4 titanium alloy cone-shaped forging for the aeroengine according to claim 4, wherein: the diameter of the small end of the punching core is 190 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111672060.4A CN114289659A (en) | 2021-12-31 | 2021-12-31 | Manufacturing method of TC4 titanium alloy cone-shaped forging for aeroengine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111672060.4A CN114289659A (en) | 2021-12-31 | 2021-12-31 | Manufacturing method of TC4 titanium alloy cone-shaped forging for aeroengine |
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| CN114289659A true CN114289659A (en) | 2022-04-08 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH032359A (en) * | 1989-05-26 | 1991-01-08 | Nissan Motor Co Ltd | Production of flanged cylindrical member |
| CN102107255A (en) * | 2010-12-20 | 2011-06-29 | 沈阳黎明航空发动机(集团)有限责任公司 | Die forging forming method of basin-shaped blank |
| CN103008521A (en) * | 2012-10-22 | 2013-04-03 | 沈阳黎明航空发动机(集团)有限责任公司 | Forming die for conic forgings and forming method thereof |
| CN103447769A (en) * | 2013-08-27 | 2013-12-18 | 贵州安大航空锻造有限责任公司 | Preparing method of TC4 alloy large-scale special-shaped cross section annular blank |
| CN106141049A (en) * | 2016-08-31 | 2016-11-23 | 无锡派克新材料科技股份有限公司 | Small-bore steep-taper taper annular element forging and forming technology |
| CN108213316A (en) * | 2016-12-14 | 2018-06-29 | 贵州航宇科技发展股份有限公司 | 2219 aluminium alloy big-taper-angle taper shape ring forging manufacturing methods |
| CN111761009A (en) * | 2020-05-07 | 2020-10-13 | 山东南山铝业股份有限公司 | Forging forming method of 2A70 aluminum alloy aircraft engine conical shell |
-
2021
- 2021-12-31 CN CN202111672060.4A patent/CN114289659A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH032359A (en) * | 1989-05-26 | 1991-01-08 | Nissan Motor Co Ltd | Production of flanged cylindrical member |
| CN102107255A (en) * | 2010-12-20 | 2011-06-29 | 沈阳黎明航空发动机(集团)有限责任公司 | Die forging forming method of basin-shaped blank |
| CN103008521A (en) * | 2012-10-22 | 2013-04-03 | 沈阳黎明航空发动机(集团)有限责任公司 | Forming die for conic forgings and forming method thereof |
| CN103447769A (en) * | 2013-08-27 | 2013-12-18 | 贵州安大航空锻造有限责任公司 | Preparing method of TC4 alloy large-scale special-shaped cross section annular blank |
| CN106141049A (en) * | 2016-08-31 | 2016-11-23 | 无锡派克新材料科技股份有限公司 | Small-bore steep-taper taper annular element forging and forming technology |
| CN108213316A (en) * | 2016-12-14 | 2018-06-29 | 贵州航宇科技发展股份有限公司 | 2219 aluminium alloy big-taper-angle taper shape ring forging manufacturing methods |
| CN111761009A (en) * | 2020-05-07 | 2020-10-13 | 山东南山铝业股份有限公司 | Forging forming method of 2A70 aluminum alloy aircraft engine conical shell |
Non-Patent Citations (1)
| Title |
|---|
| 黄春峰: "圆锥筒形零件的压力加工成形" * |
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Application publication date: 20220408 |