EP4476010A1 - Anlage zum isothermen schmieden - Google Patents
Anlage zum isothermen schmiedenInfo
- Publication number
- EP4476010A1 EP4476010A1 EP22846911.0A EP22846911A EP4476010A1 EP 4476010 A1 EP4476010 A1 EP 4476010A1 EP 22846911 A EP22846911 A EP 22846911A EP 4476010 A1 EP4476010 A1 EP 4476010A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- chamber
- vacuum
- forging
- changing chamber
- plant according
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J9/00—Forging presses
- B21J9/02—Special design or construction
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J1/00—Preparing metal stock or similar ancillary operations prior, during or post forging, e.g. heating or cooling
- B21J1/06—Heating or cooling methods or arrangements specially adapted for performing forging or pressing operations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J13/00—Details of machines for forging, pressing, or hammering
- B21J13/08—Accessories for handling work or tools
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J13/00—Details of machines for forging, pressing, or hammering
- B21J13/08—Accessories for handling work or tools
- B21J13/085—Accessories for handling work or tools handling of tools
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J9/00—Forging presses
- B21J9/02—Special design or construction
- B21J9/06—Swaging presses; Upsetting presses
- B21J9/08—Swaging presses; Upsetting presses equipped with devices for heating the work-piece
Definitions
- the invention relates to a system for isothermally forging near-net-shape metal semi-finished products under vacuum and/or a protective gas atmosphere with at least one forging press, which comprises at least one press ram extending into a vacuum forging chamber, at least one upper tool and at least one lower tool.
- the HIF process is characterized in particular by the fact that both the forging tools and the workpieces are heated under vacuum to a temperature that allows superplastic deformation of the workpiece before the forging process is carried out. It is known to preheat the semi-finished products to be formed in a manipulator tunnel before the forging process and to load the preheated workpiece into a heated vacuum forging chamber.
- the invention is therefore based on the object of providing a system of the type mentioned at the outset, which is characterized by low leakage losses.
- the invention is also based in particular on the object of providing a system of the type mentioned at the outset, which enables short cycle and changeover times when carrying out the isothermal forging process.
- a system for the isothermal forging of near-net-shape metal semi-finished products in a vacuum and/or inert gas atmosphere is provided with at least one forging press, which comprises at least one press ram extending into a vacuum forging chamber, at least one upper tool and at least one lower tool, with at least one Workpiece changing chamber, which is connected gas-tight to the vacuum forging chamber and with a large number of lock chambers for preparing and/or heating and/or cooling workpieces, which are connected gas-tight to the workpiece changing chamber, with at least the vacuum forging chamber having at least one round cross-sectional contour.
- the vacuum forging chamber and at least the workpiece changing chamber can be evacuated and are each connected to a vacuum source.
- gas-tight is to be understood in particular as a tightness that enables evacuation.
- a round cross-sectional contour is particularly favorable when subjected to negative pressure with regard to the mechanical strength of the structure.
- the resulting round transitions and connections as well as bushings can be sealed more easily and with less leakage loss.
- the vacuum forging chamber has a circular cross-sectional contour and round bushings and round openings.
- the vacuum forging chamber is designed as an essentially cylindrical chamber with round passages and connections, with the transitions to the upper and lower end faces preferably also being rounded off. Any maintenance openings that may be provided in the vacuum forging chamber are also preferably provided as circular or oval openings with corresponding closures.
- the workpiece changing chamber and the lock chambers also have round cross sections.
- the vacuum forging chamber, the workpiece changing chamber and the lock chambers can be connected to one another in a gas-tight manner via round connecting elements and/or bushings. In this way a tubular modular system can be provided. Furthermore, several workpieces can be provided, heated and fed to the vacuum forging chamber in parallel.
- At least one tool changing chamber is preferably provided, which is also designed as a tubular component with a circular cross section is trained.
- a tool changing chamber which is connected to the vacuum forging chamber diametrically opposite the workpiece changing chamber, for example, has the advantage that tools for converting the forging press to other components can be kept preheated in the tool changing chamber.
- the heating-up time for a tool can be up to 24 hours, for example, so that the design of the system with a tool changing chamber has the advantage that a changeover to other tools can be carried out with little loss of time.
- the tool changing chamber also has a large number of lock chambers for introducing different upper tools and different lower tools under vacuum.
- the lock chambers of the tool changing chamber are expediently also designed such that they can be shut off in a gas-tight manner relative to the tool changing chamber by means of appropriately designed vacuum slides.
- the lock chambers of the workpiece changing chamber and/or the tool changing chamber can, for example, be closed off from the atmosphere with circular hatches.
- the vacuum slides are expediently provided with round slide plates.
- a large number of vacuum pumps are provided, which are arranged below a mill floor, preferably in a plant basement.
- Such an arrangement makes it possible to arrange the vacuum pumps directly below the individual chambers of the system, so that the number of required vacuum lines, the length of the vacuum lines and the number of required vacuum distributions can be minimized, which also contributes to reducing leakage losses.
- the vacuum pumps above the Wegtenflures it would be necessary to provide larger cable routes, since the Lines would have to be laid around the system and the individual chambers could not be connected directly.
- At least one vacuum pump can be arranged directly below the vacuum forging chamber and below the workpiece changing chamber and preferably also below the tool changing chamber.
- the workpiece changing chamber, the lock chambers and preferably also the tool changing chamber are assembled as tubular components in a modular design, so that the system can be expanded by a required number of lock chambers.
- tubular components can be joined together to form a tunnel-shaped workpiece changing chamber, for example.
- tubular lock chambers can be connected to the tool changing chamber and/or to the workpiece changing chamber on both sides.
- At least one horizontally displaceable manipulator for handling the workpieces is arranged in the workpiece changing chamber.
- a movable manipulator for handling the tools can also be provided in the tool changing chamber.
- the passage of the press ram into the vacuum forging chamber expediently includes water cooling.
- the pressure stage of the vacuum forging chamber in the area where the press ram passes through comprises at least two sealing flanges which interact with a sealing system of the press ram on the inside.
- the flanges are preferably over at least one Bellows made of stainless steel, preferably connected to one another via two such bellows.
- FIG. 1 shows a partial sectional view through a system according to the invention
- Figure 2 is a plan view of the plant according to the invention.
- FIG. 3 is a schematic perspective view of the plant according to the invention.
- Figure 4 is a schematic sectional view showing the press ram and the upper die and lower die of the forging press
- FIG. 5 shows a perspective partial sectional view of the vacuum forging chamber and the tool changing chamber connected to it
- FIG. 6 shows a schematic representation of a lock chamber designed as a heating chamber
- FIG. 7 shows a perspective view of a vacuum slide.
- the system shown in Figure 1 for the isothermal forging of metal semi-finished products comprises a forging press 1 with four columns 2 and a press ram 4 extending into a vacuum forging chamber 3 with an upper tool 5 (see Figure 4) which is connected to a lower tool 6 arranged in the vacuum forging chamber 3 to transform one heated semi-finished product 7 interacts.
- the press ram 4 can be moved hydraulically vertically or axially, and is sealed in a passage 8 of the vacuum forging chamber 3 .
- the invention is to be understood in such a way that the press ram can also be mechanically displaceable.
- the vacuum forging chamber 3 is connected on the one hand to a workpiece changing chamber 9 and on the other hand to a tool changing chamber 10 .
- First lock chambers 11 are connected to the workpiece changing chamber 9, whereas second lock chambers 12 are connected to the tool changing chamber.
- the vacuum forging chamber 3, the workpiece changing chamber 9 and the tool changing chamber 10 as well as the first and second lock chambers 11, 12 can each be evacuated and gas-tightly connected to one another or connected to one another.
- all chambers 3 , 9 , 10 , 11 , 12 are connected to vacuum pumps 13 which are arranged below a smelting floor 14 under the plant in a plant cellar 15 .
- Semi-finished products 7 can be introduced into the workpiece changing chamber 9 and finished forged products can be discharged from the workpiece changing chamber 9 via the first lock chambers 11 .
- the workpiece changing chamber 9 is designed as a tubular tunnel for handling the semi-finished products 7 and the finished products, which has a round, circular cross-section with which it is connected to a correspondingly designed opening in the vacuum forging chamber 3 .
- the first lock chambers 11 are also designed as tubular components which have a round, circular cross-section with which they are connected to correspondingly designed openings in the workpiece changing chamber 9 on the side of the latter.
- the first lock chambers 11 can be closed gas-tight to the outside against the atmosphere with appropriately designed round hatches 18 and can be closed with respect to the workpiece changing chamber 9 via vacuum slides 23 . At least some of the first lock chambers 11 are provided with heating devices 19 for preheating the semi-finished products 7 .
- a first lock chamber 11 designed as a heating chamber is shown in FIG. This includes the designated 19 heating device and a hydraulically lowerable hood 20, which encloses the semi-finished product 7 during the heating process in order to accelerate the heating process.
- the heating device 19 is designed as a heating plate with at least one resistance heating element.
- the second lock chambers 12 are designed to correspond to the first lock chambers 11 and are each connected laterally to the tool changing chamber 10 .
- the tool changing chamber 10 is also connected as a tubular component with a circular cross section to a correspondingly designed opening in the vacuum forging chamber 3 .
- the vacuum forging chamber 3 can be shut off both with respect to the workpiece changing chamber 9 and with respect to the tool changing chamber 10 by means of a vacuum slide 23 in each case.
- Tools, upper tools 5 on the one hand and lower tools 6 on the other hand can be brought into and removed from the tool changing chamber 10 through the second lock chambers 12 .
- a horizontally movable lifting truck 17 is preferably provided in the tool changing chamber 10 . The tools are moved into the vacuum forging chamber 3 with the lifting truck 17, where they are coupled to the press ram 4 by a corresponding lifting movement of the latter.
- the vacuum forging chamber 3 has a circular cross-section and is approximately formed cylindrical housing.
- the transitions of the cylindrical wall of the vacuum forging chamber 3 in the upper and lower end faces can be rounded.
- FIG. 5 the illustration according to FIG. 5 is simplified and this detail cannot be seen from FIG.
- parts of the front columns 2 of the forging press 1 are also not shown in FIG.
- the vacuum slides 23 comprise circular slide plates 24, which are shown closed in FIG. Via the second lock chambers 12, which can also be closed with hatches 18, an upper tool 5 and a lower tool 6 can be introduced into or removed from the tool changing chamber 10 on either side of the tool changing chamber 10.
- two second lock chambers 12 are connected to the tool changing chamber 10 in each case.
- the tool changing chamber 10 be expanded by appropriately designed tubular components, to which further second lock chambers 12 are then connected, so that a large number of tools can be preheated in a ready position.
- a correspondingly modular design is provided for the workpiece changing chamber 9 and the first lock chambers 11 connected to it.
- the vacuum forging chamber 3 is provided with a maintenance opening 21 which is closed with a maintenance door 22 .
- the maintenance opening 21 and the maintenance door 22 are also designed to be round, since these contours can be sealed more easily and with less force.
- the semi-finished products 7 are first introduced into one or more of the first lock chambers 11 by means of a manipulator, lifting truck or the like.
- the lock chamber 11 in question is opened, it is closed gas-tight with respect to the workpiece changing chamber 9 by means of vacuum slides 23 .
- the first lock chamber 11 is then closed and, after appropriate evacuation and preheating of the semi-finished product 7 by means of a heating device 19, is connected to the workpiece changing chamber 9 by actuating the vacuum slide 23. Then the heated semi-finished product 7 is taken over by the manipulator 16 and, as shown in FIG. The upper tool 5 and the lower tool 6 are closed by actuating the press ram 4 for the purpose of forming the forging. After completion of the forged part, this is again removed with the manipulator 16 and made available in a first lock chamber 11 for the purpose of cooling and subsequent removal.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102022201470.7A DE102022201470A1 (de) | 2022-02-11 | 2022-02-11 | Anlage zum isothermen Schmieden |
| PCT/EP2022/087911 WO2023151855A1 (de) | 2022-02-11 | 2022-12-27 | Anlage zum isothermen schmieden |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP4476010A1 true EP4476010A1 (de) | 2024-12-18 |
| EP4476010B1 EP4476010B1 (de) | 2026-04-29 |
Family
ID=85017540
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22846911.0A Active EP4476010B1 (de) | 2022-02-11 | 2022-12-27 | Anlage zum isothermen schmieden |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20250144700A1 (de) |
| EP (1) | EP4476010B1 (de) |
| CN (1) | CN118434517A (de) |
| DE (1) | DE102022201470A1 (de) |
| WO (1) | WO2023151855A1 (de) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117245049B (zh) * | 2023-09-19 | 2024-07-19 | 北京科技大学 | 一种1300-2000℃超高温真空等温成形装置 |
| CN120920648A (zh) * | 2025-08-14 | 2025-11-11 | 中国机械总院集团北京机电研究所有限公司 | 一种大型多工作台真空等温锻造设备及连续化生产方法 |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3698219A (en) | 1971-05-10 | 1972-10-17 | United Aircraft Corp | Apparatus for forging |
| US3893318A (en) | 1974-07-17 | 1975-07-08 | United Aircraft Corp | Forging apparatus |
| CH593732A5 (de) | 1975-12-19 | 1977-12-15 | Bbc Brown Boveri & Cie | |
| JPS59225840A (ja) * | 1983-06-08 | 1984-12-18 | Agency Of Ind Science & Technol | 超塑性鍛造装置 |
| FR2749784B1 (fr) | 1996-06-13 | 1998-07-31 | Snecma | Procede de fabrication d'un aube creuse de turbomachine et presse-four a multiple effet utilisee dans sa mise en oeuvre |
| CN2625076Y (zh) | 2003-06-27 | 2004-07-14 | 天津市天锻压力机有限公司 | 一种用于等温模锻液压机上的模具保温装置 |
-
2022
- 2022-02-11 DE DE102022201470.7A patent/DE102022201470A1/de active Pending
- 2022-12-27 WO PCT/EP2022/087911 patent/WO2023151855A1/de not_active Ceased
- 2022-12-27 EP EP22846911.0A patent/EP4476010B1/de active Active
- 2022-12-27 US US18/837,526 patent/US20250144700A1/en active Pending
- 2022-12-27 CN CN202280085869.3A patent/CN118434517A/zh active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| EP4476010B1 (de) | 2026-04-29 |
| CN118434517A (zh) | 2024-08-02 |
| US20250144700A1 (en) | 2025-05-08 |
| DE102022201470A1 (de) | 2023-08-17 |
| WO2023151855A1 (de) | 2023-08-17 |
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