WO2024098917A1 - Procédé de formage intégral pour forgeage de bague de forme spéciale axiale - Google Patents

Procédé de formage intégral pour forgeage de bague de forme spéciale axiale Download PDF

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Publication number
WO2024098917A1
WO2024098917A1 PCT/CN2023/116748 CN2023116748W WO2024098917A1 WO 2024098917 A1 WO2024098917 A1 WO 2024098917A1 CN 2023116748 W CN2023116748 W CN 2023116748W WO 2024098917 A1 WO2024098917 A1 WO 2024098917A1
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Prior art keywords
ring
blank
rolling
special
axial
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PCT/CN2023/116748
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English (en)
Chinese (zh)
Inventor
刘其源
何方有
许志成
刘峰
孙传华
王骏
蒋小飞
杨雄
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无锡派克新材料科技股份有限公司
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Publication of WO2024098917A1 publication Critical patent/WO2024098917A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K1/00—Making machine elements
    • B21K1/76—Making machine elements elements not mentioned in one of the preceding groups
    • B21K1/761—Making machine elements elements not mentioned in one of the preceding groups rings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
    • B21H1/00—Making articles shaped as bodies of revolution
    • B21H1/06—Making articles shaped as bodies of revolution rings of restricted axial length
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
    • B21J5/002—Hybrid process, e.g. forging following casting

Definitions

  • the invention belongs to the technical field of rolling technology, and in particular relates to an integral forming method of an axial special-shaped ring forging.
  • the existing patent CN102085549B discloses a forming method for processing the outer circumferential surface of a high barrel forging using a follower sleeve die.
  • the annular groove on the inner ring surface of the follower sleeve die is along the annular direction, so only special-shaped rolling in the annular direction can be achieved. Since the characteristic of ring rolling forming is the continuous deformation of the metal along the circumferential direction, the existing special-shaped ring forgings all achieve annular special-shaped shapes, and the special-shaped shapes are evenly distributed along the circumference, that is, the shapes of each axial section position must be consistent.
  • the present invention discloses an integral forming method for an axial special-shaped ring forging, which realizes the near-net-shape production and manufacturing of the axial special-shaped ring forging by introducing an intermediate rigid die with an axial groove.
  • the cylindrical blank is subjected to axial upsetting deformation, and after reaching a predetermined height, a cylindrical punch is used to punch a hole in the cylindrical blank to obtain a ring-shaped blank with a hole;
  • step S4 pre-rolling and heating, heating the perforated annular blank obtained in step S3 to 440° C. to 480° C., keeping the temperature for 9 to 12 hours, and then taking it out of the furnace;
  • the straight-wall main roller is controlled to rotate in the forward direction, and the intermediate rigid mold is driven by the straight-wall main roller to rotate in the reverse direction.
  • the intermediate rigid mold drives the annular blank to rotate in the reverse direction.
  • the core roller is controlled to feed radially toward the straight-wall main roller, and the outer diameter of the holding roller is in contact with the outer diameter of the intermediate rigid mold.
  • the core roller is a straight-wall core roller or a special-shaped core roller.
  • one end or both ends of the special-shaped core roller are provided with a flange step for performing inner hole special-shaped ring rolling on the annular blank and forming an inner end frame flange on the inner wall surface of the annular blank.
  • the process of using a special-shaped core roller to roll the inner hole special-shaped ring is located between step S5 pre-rolling and step S6 axial special-shaped ring heating, and the specific steps are as follows:
  • the ring blank obtained by pre-rolling in step S5 is first heated to 440°C to 480°C, kept warm for 9 to 12 hours and then taken out of the furnace. Subsequently, a special-shaped core roller and a straight-walled main roller are used to perform inner hole special-shaped ring rolling on the heated ring blank to obtain a ring blank with a special-shaped inner hole.
  • the specific steps of S2 are as follows: using a press to perform upsetting, stretching, and then upsetting in the Z-axis direction, stretching, upsetting in the Y-axis direction, and stretching, upsetting in the X-axis direction, and finally stretching along the Z-axis direction, and the deformation of each pass is controlled to be 45% to 55%, and the forging pressing speed of the press is controlled to be 10 to 50 mm/s.
  • the pre-rolling deformation is controlled to be 45% to 60%
  • the rotation speed of the straight-wall main roller is 1.5-1.7 rad/s
  • the rolling ring speed is controlled to be 8 to 12 mm/s
  • the pre-rolled billet is made into a ring billet with a rectangular cross-section.
  • step b the deformation of the inner hole special-shaped rolled ring is controlled at 25% to 40%, the rotation speed of the straight wall main roller is 1.2-1.5 rad/s, and the speed increase of the rolled ring is controlled at 5 to 8 mm/s.
  • the intermediate rigid mold is an annular mold
  • the inner wall surface of the annular mold is circumferentially provided with at least one axial groove arranged axially, and the axial groove is arranged to match the axial stringer of the target ring forging.
  • S6-1 Preheat the middle rigid mold to 350-400°C and place it on the working plane of the ring machine;
  • the present invention discloses an integral forming method for an axial special-shaped ring forging, which has the following advantages:
  • the present invention realizes the near-net-shape production and manufacturing of axial special-shaped ring forgings by introducing an intermediate rigid die, reduces milling allowance, improves raw material utilization, retains forging streamlines, and reduces raw material costs and machining costs.
  • the axial special-shaped ring forgings produced by the method of the present invention can realize uneven distribution of special shapes along the circumference, and the shapes of various axial section positions can be inconsistent, which is suitable for the forming of various types of axial special-shaped ring forgings.
  • FIG1 is a schematic structural diagram 1 of a target ring forging of Example 1;
  • FIG2 is a schematic structural diagram 2 of a target ring forging of Example 1;
  • FIG3 is a three-dimensional schematic diagram of a target ring forging of Example 1;
  • FIG4 is a schematic diagram 1 of a special-shaped inner hole rolled ring in step 6 of Example 1;
  • FIG5 is a schematic diagram 2 of a special-shaped inner hole rolled ring in step 6 of Example 1;
  • FIG6 is a schematic diagram 1 of a ring blank with a special-shaped inner hole in step 6 of Example 1;
  • FIG7 is a schematic diagram 2 of a ring blank with a special-shaped inner hole in step 6 of Example 1;
  • FIG8 is a schematic diagram 1 of the ring billet rolling process in step 7-4 of Example 1;
  • FIG9 is a schematic diagram 2 of the ring billet rolling process in step 7-4 of Example 1;
  • FIG10 is a schematic diagram 1 of the ring billet rolling process in step 7-5 of Example 1;
  • FIG11 is a schematic diagram 2 of the ring billet rolling process in step 7-5 of Example 1;
  • FIG12 is a schematic structural diagram 1 of a target ring forging of Example 2;
  • FIG13 is a schematic structural diagram 2 of a target ring forging of Example 2;
  • FIG14 is a three-dimensional schematic diagram of a target ring forging of Example 2.
  • FIG15 is a schematic diagram 1 of the ring billet rolling in step 6 of Example 2;
  • FIG16 is a schematic diagram 2 of the ring billet rolling in step 6 of Example 2;
  • FIG17 is a schematic diagram 1 of the ring billet rolling process in step 6-5 of Example 2;
  • FIG18 is a schematic diagram 2 of the ring billet rolling process in step 6-5 of Example 2;
  • straight-wall main roller 1 special-shaped core roller 2
  • flange step 2-1 intermediate rigid mold I3-1
  • intermediate rigid mold II3-2 intermediate rigid mold II3-2
  • axial groove 4 annular blank 5
  • this is an axial special-shaped ring forging of the upper and lower inner end frame flanges of the outer axial truss.
  • the specific forming steps are as follows:
  • Step 1 Forging heating: put 660kg of aluminum alloy bars ( ⁇ 500 ⁇ 1200) ⁇ 400°C into the furnace, heat to 460°C and keep warm for 18h before taking out of the furnace.
  • Step 2 Multi-directional forging: Use a press to perform multi-directional forging on the billet to improve the organizational properties of the billet and obtain a cylindrical billet.
  • the specific steps are as follows:
  • the billet (aluminum alloy bar) is upset to 620 ⁇ 620 ⁇ 610 (Z-axial deformation 49.2%) along the Z-axis direction, drawn to 420 ⁇ 420 ⁇ 1350 (Z-axial deformation 54.8%), upset to 620 ⁇ 620 ⁇ 610 (Z-axial deformation 54.8%), then drawn to 420 ⁇ 1350 ⁇ 420 (Y-axial deformation 54.1%) along the Y-axis direction of the billet, upset to 620 ⁇ 610 ⁇ 620 (Y-axial deformation 54.8%), then drawn to 1350 ⁇ 420 ⁇ 420 (X-axial deformation 54.1%) along the X-axis direction of the billet, upset to 610 ⁇ 620 ⁇ 620 (X-axial deformation 54.8%), and finally drawn to 420 ⁇ 420 ⁇ 1350 (Z-axial deformation 54.1%).
  • the forging speed of the press machine is controlled to be 30 mm/s.
  • the unit of dimensions in all embodiments is mm.
  • Step 3 Punching the upsetting cake: Upset and round the cylindrical blank along the Z-axis direction until the size reaches ⁇ 640 ⁇ 730 (Z-axial deformation is 45.9%), and then use a cylindrical punch to punch the cylindrical blank with an inner hole size of ⁇ 250, thereby obtaining a perforated ring blank with a size of ⁇ 665 (outer diameter) ⁇ ⁇ 250 (inner diameter) ⁇ 730.
  • Step 4 Pre-rolling heating: Heat the perforated annular blank to 460°C, keep it warm for 11 hours, and then take it out of the furnace.
  • Step 5 Pre-rolling: Pre-roll the perforated ring blank on a horizontal ring rolling machine to a ring blank 5 with a rectangular axial cross section, until the size is ⁇ 1010 (outer diameter) ⁇ ⁇ 800 (inner diameter) ⁇ 730 (wall thickness deformation is 49.3%), wherein the speed of the straight wall main roller 1 is controlled to be 1.5 rad/s, and the speed increase of the rolling ring is 10 mm/s;
  • Step 6 Inner hole special-shaped ring rolling: heat the ring blank 5 to 460°C, keep it warm for 11h and then take it out of the furnace; as shown in Figures 4 and 5, use the special-shaped core roller 2 and the straight-walled main roller 1 to perform inner hole special-shaped ring rolling on the heated ring blank 5, and obtain the ring blank 5 with upper and lower inner end frame flanges as shown in Figures 6 and 7 (the deformation amount is 28.6%).
  • flange steps 2-1 are provided at both ends of the special-shaped core roller 2 as shown in Figure 4, the roller surface of the special-shaped core roller 2 is in contact with the inner hole wall surface of the ring blank 5, and the straight-walled main roller 1 is in contact with the outer wall surface of the ring blank 5, and the rotation speed of the straight-walled main roller 1 is controlled to be 1.4rad/s and the ring rolling speed is 6mm/s.
  • Step 7 Axial profiled ring rolling: heat the ring blank 5 to 460°C, keep it warm for 10 hours and then take it out of the furnace; place the ring blank 5 in the intermediate rigid mold I3-1, and use the intermediate rigid mold I3-1 in conjunction with the profiled core roller 2 and the straight wall main roller 1 to perform final rolling, thus obtaining the outer axial stringer inner end frame flange profiled ring forging as shown in Figures 1 to 3.
  • the final rolling steps of this embodiment 1 are as follows:
  • Step 7-1 Preheat the intermediate rigid mold I3-1 to 350°C and place it on the working plane of the ring machine;
  • Step 7-2 placing the heated annular blank 5 in the intermediate rigid mold I3-1, wherein the outer diameter of the annular blank 5 is smaller than the inner diameter of the intermediate rigid mold I3-1;
  • Step 7-3 Pass the special-shaped core roller 2 through the inner hole of the ring blank 5, and use the intermediate rigid mold I3-1 and the ring blank 5 as a whole to perform ring rolling;
  • Step 7-4 Control the straight wall main roller 1 to rotate counterclockwise (counterclockwise rotation is positive rotation in this embodiment), and the straight wall main roller 1 drives the intermediate rigid mold I3-1 to rotate clockwise, and the intermediate rigid mold I3-1 drives the annular blank 5 to rotate clockwise, and at the same time, the special-shaped core roller 2 is controlled to feed radially toward the straight wall main roller 1, and the outer diameter of the holding roller and the intermediate rigid mold I3-1 are in contact.
  • the deformation of the annular blank 5 reaches 6.0%, as shown in Figures 8 and 9, the outer diameter of the annular blank 5 fits the inner hole of the intermediate rigid mold I3-1.
  • the rotation speed of the straight wall main roller 1 is 1.3rad/s
  • the rolling ring speed is 3mm/s
  • the feeding speed of the special-shaped core roller 2 is 0.8mm/s.
  • Step 7-5 When the outer diameter of the ring blank 5 is completely fitted with the inner diameter of the intermediate rigid mold I3-1, the ring blank 5 and the intermediate rigid mold I3-1 move synchronously, and the angular velocity and linear velocity of the two are consistent, as shown in Figures 10 and 11.
  • an axial stringer special-shaped ring forging is shown, and the specific forming steps are as follows:
  • Step 1 Forging heating: put 1520kg aluminum alloy bar ( ⁇ 650 ⁇ 1635) ⁇ 400°C into the furnace, heat it to 460°C and keep it for 18h before taking it out of the furnace;
  • Step 2 Multi-directional forging: Use a press to perform multi-directional forging on the blank 5 to improve the organizational properties of the blank and obtain a cylindrical blank.
  • the specific steps are as follows:
  • the billet (aluminum alloy bar) is upset to 825 ⁇ 825 ⁇ 800 (Z-axial deformation is 51.1%) along the Z-axis direction, drawn to 580 ⁇ 580 ⁇ 1600 (Z-axial deformation is 50%), upset to 825 ⁇ 825 ⁇ 800 (Z-axial deformation is 50%), and then drawn to 580 ⁇ 1600 ⁇ 580 (Y-axial deformation is 48.4%) along the Y-axis direction of the billet, upset to 825 ⁇ 800 ⁇ 825 (Y-axial deformation is 50%), and then drawn to 1600 ⁇ 580 ⁇ 580 (X-axial deformation is 48.4%) along the X-axis direction of the billet, upset to 800 ⁇ 825 ⁇ 825 (X-axial deformation is 50%), and then drawn to 580 ⁇ 580 ⁇ 1600 (Z-axial deformation is 48.4%) along the Z-axis direction.
  • the forging pressing speed of the press is controlled to be 30 mm/s.
  • Step 3 Punching holes in the upsetting cake: Upset and round the cylindrical blank along the Z-axis direction until the size reaches ⁇ 930 ⁇ 800 (Z-axial deformation is 50%), and then use a cylindrical punch to punch the cylindrical blank with an inner hole size of ⁇ 300, thereby obtaining a perforated ring blank with a size of ⁇ 955 (outer diameter) ⁇ ⁇ 300 (inner diameter) ⁇ 800.
  • Step 4 Pre-rolling heating: Heat the perforated ring billet to 460°C, keep it warm for 11 hours, and then take it out of the furnace.
  • Step 5 Pre-rolling: The perforated ring blank is pre-rolled on a horizontal ring rolling machine to obtain a ring blank 5 with a rectangular axial cross-section and dimensions of ⁇ 1350 (outer diameter) ⁇ ⁇ 1000 (inner diameter) ⁇ 800 (wall thickness deformation 46.6%).
  • the speed of the straight wall main roller is controlled to be 1.6 rad/s, and the speed increase of the rolling ring is 12 mm/s.
  • Step 6 Axial profiled ring rolling: heat the ring blank 5 to 450°C, keep it warm for 11 hours and then take it out of the furnace. Place the ring blank 5 in the intermediate rigid mold II3-2 as shown in Figures 15 and 16.
  • the intermediate rigid mold II3-2 is used in conjunction with the straight-wall core roller 6 and the straight-wall main roller 1 to perform final rolling to obtain the outer axial stringer profiled ring forging as shown in Figures 12-14.
  • the final rolling steps of this embodiment are as follows:
  • Step 6-1 Preheat the intermediate rigid mold II3-2 to 350°C and place it on the working plane of the ring machine;
  • Step 6-2 placing the heated annular blank 5 in the intermediate rigid mold II3-2, at which point the outer diameter of the annular blank 5 is smaller than the inner diameter of the intermediate rigid mold II3-2, as shown in FIGS. 15-16;
  • Step 6-3 Pass the straight-wall core roller 6 through the inner hole of the ring blank 5, and use the intermediate rigid mold II3-2 and the ring blank 5 as a whole to perform ring rolling;
  • Step 6-4 Control the straight-wall main roller 1 to rotate counterclockwise (counterclockwise rotation is positive rotation in this embodiment), and the straight-wall main roller 1 drives the intermediate rigid mold II3-2 to rotate clockwise, and the intermediate rigid mold II3-2 drives the annular blank 5 to rotate clockwise.
  • the straight-wall core roller 6 is controlled to feed radially toward the straight-wall main roller 1, and the outer diameter of the holding roller and the intermediate rigid mold II3-2 are in contact.
  • the outer diameter of the annular blank 5 fits with the inner hole of the intermediate rigid mold II3-2, wherein the rotation speed of the straight-wall main roller 1 is 1.2 rad/s, the rolling ring speed increase is 2.5 mm/s, and the feed speed of the straight-wall core roller 6 is 0.5 mm/s.
  • Step 6-5 When the outer diameter of the ring blank 5 is completely fitted with the inner diameter of the intermediate rigid mold II3-2, as shown in Figures 17 and 18, the ring blank 5 and the intermediate rigid mold II3-2 move synchronously, and the angular velocity and linear velocity of the two are kept consistent.
  • the straight-wall main roller 1 continues to be controlled to rotate counterclockwise, and the straight-wall core roller 6 feeds radially toward the straight-wall main roller 1, thereby forming an outer axial beam in the axial groove 4 of the intermediate rigid mold II3-2, and finally obtaining the target ring forging as shown in Figures 12-14, wherein the rotation speed of the straight-wall main roller 1 is controlled to be 0.9rad/s, the rolling ring acceleration is 0.8mm/s, and the feed speed of the straight-wall core roller 6 is 0.3mm/s.
  • the axial special-shaped forming mechanism of the axial special-shaped ring forging is as follows:
  • the ring blank is rolled using an intermediate rigid die in cooperation with a core roller and a straight-wall main roller so that the outer diameter of the ring blank fits the intermediate rigid die;
  • the axial groove of the intermediate rigid mold can be set but is not limited to the structure of the intermediate rigid mold in the above embodiment. It can be designed according to the outer axial special-shaped structure of the actual axial special-shaped ring forging, and is suitable for the forming of various types of outer axial truss ring forgings.
  • the special-shaped structure of the special-shaped core roller matches the special-shaped structure of the inner hole of the target ring forging.
  • the integral forming method of the axial special-shaped ring forging of the present invention can be applied to various ring forgings of high-temperature alloys, titanium alloys, aluminum alloys, magnesium alloys, stainless steel, steel, etc.
  • the outer axial shape of the present invention can be any continuous or discontinuous shape such as round, square, triangle, etc., which can be realized by this method.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)

Abstract

La présente divulgation se rapporte au domaine technique des processus de laminage, et concerne un procédé de formage intégral pour un forgeage de bague de forme spéciale axiale. Le procédé de formage intégral comprend les étapes spécifiques consistant à : S1, chauffer pour forger ; S2, forger dans de multiples directions ; S3, poinçonner un gâteau de refoulement ; S4, chauffer pour pré-laminer ; S5, pré-laminer ; et S6, laminer axialement une bague de forme spéciale : la placer dans des moules rigides intermédiaires (I3-1, II3-2), un flan de bague (5) obtenu par chauffage, les moules rigides intermédiaires (I3-1, II3-2) étant des moules de forme spéciale pourvus de rainures axiales (4), les moules rigides intermédiaires (I3-1, II3-2) étant en coopération avec des rouleaux centraux (2, 6) et un rouleau principal de paroi droite (1), et un laminage final étant effectué pour obtenir le forgeage de bague de forme spéciale axiale. L'introduction des moules rigides intermédiaires permet la production et la fabrication de formage de filet proche du forgeage de bague de forme spéciale axiale, et une tolérance d'usinage est réduite, de telle sorte que la tolérance d'un produit est optimisée, ce qui permet d'augmenter le taux d'utilisation des matières premières, et de réduire les coûts de matière première et les coûts d'usinage.
PCT/CN2023/116748 2022-11-09 2023-09-04 Procédé de formage intégral pour forgeage de bague de forme spéciale axiale WO2024098917A1 (fr)

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CN202211398745.9 2022-11-09
CN202211398745.9A CN115430801B (zh) 2022-11-09 2022-11-09 一种轴向异形环锻件整体成形方法

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115430801B (zh) * 2022-11-09 2023-02-10 无锡派克新材料科技股份有限公司 一种轴向异形环锻件整体成形方法

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JPS6440128A (en) * 1987-08-04 1989-02-10 Mitsubishi Metal Corp Manufacture of ring article having protrusion on peripheral part by plastic working
JPH03198939A (ja) * 1989-12-26 1991-08-30 Mitsubishi Materials Corp リングローリングミル
CN102085548A (zh) * 2010-12-10 2011-06-08 贵州安大航空锻造有限责任公司 钛合金高筒环锻件的辗轧成形方法
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CN214108649U (zh) * 2020-11-17 2021-09-03 重庆骄航科技有限公司 一种环形件的成型装置
CN113579130A (zh) * 2021-07-29 2021-11-02 武汉理工大学 带外岛屿凸台的异型薄壁机匣环锻件轧制方法
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CN102430897A (zh) * 2011-10-28 2012-05-02 江阴市恒润环锻有限公司 一种异形截面法兰的热变形工艺
CN210475363U (zh) * 2019-08-27 2020-05-08 张家港市亨通环形锻件制造有限公司 一种内t型齿轮锻件模具

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Publication number Priority date Publication date Assignee Title
JPS6440128A (en) * 1987-08-04 1989-02-10 Mitsubishi Metal Corp Manufacture of ring article having protrusion on peripheral part by plastic working
JPH03198939A (ja) * 1989-12-26 1991-08-30 Mitsubishi Materials Corp リングローリングミル
CN102085548A (zh) * 2010-12-10 2011-06-08 贵州安大航空锻造有限责任公司 钛合金高筒环锻件的辗轧成形方法
CN109351896A (zh) * 2018-11-14 2019-02-19 湖北汽车工业学院 一种超大直径6061铝合金异形截面环件的轧制方法
CN210450757U (zh) * 2019-08-27 2020-05-05 张家港市亨通环形锻件制造有限公司 一种用于制造内弓形锻件的模具
CN214108649U (zh) * 2020-11-17 2021-09-03 重庆骄航科技有限公司 一种环形件的成型装置
CN113579130A (zh) * 2021-07-29 2021-11-02 武汉理工大学 带外岛屿凸台的异型薄壁机匣环锻件轧制方法
CN115430801A (zh) * 2022-11-09 2022-12-06 无锡派克新材料科技股份有限公司 一种轴向异形环锻件整体成形方法

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