EP2555886A1 - Procede de fabrication de pieces forgees en alliage leger incorporant des sections pleines ou tirees d'epaisseur - Google Patents
Procede de fabrication de pieces forgees en alliage leger incorporant des sections pleines ou tirees d'epaisseurInfo
- Publication number
- EP2555886A1 EP2555886A1 EP11719334A EP11719334A EP2555886A1 EP 2555886 A1 EP2555886 A1 EP 2555886A1 EP 11719334 A EP11719334 A EP 11719334A EP 11719334 A EP11719334 A EP 11719334A EP 2555886 A1 EP2555886 A1 EP 2555886A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- core
- forging
- casting
- semi
- modeling
- 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
- 238000005242 forging Methods 0.000 title claims abstract description 46
- 238000000034 method Methods 0.000 title claims abstract description 29
- 239000007787 solid Substances 0.000 title claims abstract description 11
- 238000004519 manufacturing process Methods 0.000 title claims description 14
- 229910001234 light alloy Inorganic materials 0.000 title description 5
- 239000000463 material Substances 0.000 claims abstract description 45
- 238000005266 casting Methods 0.000 claims abstract description 28
- 239000011265 semifinished product Substances 0.000 claims abstract description 18
- 229910052751 metal Inorganic materials 0.000 claims abstract description 7
- 239000002184 metal Substances 0.000 claims abstract description 7
- 238000009966 trimming Methods 0.000 claims description 7
- 150000003839 salts Chemical class 0.000 claims description 6
- 239000004576 sand Substances 0.000 claims description 6
- 230000007613 environmental effect Effects 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 239000011162 core material Substances 0.000 claims 20
- 239000011295 pitch Substances 0.000 claims 1
- 239000000047 product Substances 0.000 claims 1
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 230000007547 defect Effects 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000005457 optimization Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 206010003830 Automatism Diseases 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 238000010273 cold forging Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006355 external stress Effects 0.000 description 1
- 230000012447 hatching Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D25/00—Special casting characterised by the nature of the product
- B22D25/02—Special casting characterised by the nature of the product by its peculiarity of shape; of works of art
-
- 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
-
- 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
- B21K21/00—Making hollow articles not covered by a single preceding sub-group
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D31/00—Cutting-off surplus material, e.g. gates; Cleaning and working on castings
- B22D31/002—Cleaning, working on castings
Definitions
- the invention relates to the technical sector of hot or cold forging for making hollow parts of light alloys.
- the invention also refers to the technical sector of the foundry in which it is known to melt the material around a core previously disposed and held in a mold.
- the invention relates to the application of the method for all technical fields for producing parts with high mechanical characteristics and in particular for certain parts or components in the automotive field, the cycle not limited.
- the technology of hollow part forging is well known. This is for example the case of forging ingots of previously pierced material. It is also the radial forging of blanks or forging ingots requiring time and several forging steps. We also know the forging of hollow parts with implementation of pins that allow the realization of recesses. This technique requires the use of pin insertion mechanisms and an automatism that can operate at the rate of hammers for good productivity.
- these recesses are always apparent to allow the positioning of the pins, and create limitations of use.
- the kinematics to calculate is not always easy to implement. We also know the machining method of the parts but it is expensive in machining time and initial material to be machined.
- Patent EP 850825 does not take into account the possibility of deformation of the core during the striking operation during forging. This patent is limited to pedal cranks for cycle in which the stresses are quite different than those resulting from the technical components for the design of motor vehicles.
- the bearing surfaces associated with the core are arranged in the zones to be machined.
- the method described in the patent requires that it is necessary to drill, pre-machine the piece obtained to break the core. This constraint is very heavy and delicate to achieve. The operator must also cut the final piece. The trimming results in the recovery of various and incompatible materials such as aluminum and steel, the aluminum being contained in the forged flash and the steel being the constituent material of the sealing means (pins, worn-inserts). This requires in the hypothesis of recycling a sorting.
- the process for manufacturing hollow parts made in two successive operations of material casting for the production of a semi finished product then forging implements the following operating phases: a) definition of the final hollow part in its inner part to obtain after forging with deformation of solid or drawn sections according to environmental and mechanical constraints, b) modeling of solid and drawn sections in areas of the part requiring it
- step d) Modeling deformations introduced by forging, e) With the result of step d) modeling of the part and its core before forging, that is to say of the casting, and the core in its initial form f) After pouring the metal around said core (s) (x) over all or part of their volume into the initial shape that makes it possible to obtain a semi-finished product with its nucleus (s), this type of striking operation semi-finished product with its nucleus (s) generating deformation of the part and its nucleus (s) from their initial forms to their final shapes, (g) Trimming of the burrs made of the casting material, (h) Evacuation of the monolithic kernel (s) recyclable material,
- the modeling step of the functional zones of the core provides that the functional zones of the core emerging at the surface of the part after forging must be located outside the clipping areas of the part, in particular outside the joint plane of the dies forging, and sufficiently far away from them, to allow trimming without removing material from the core,
- Figure 1 is a perspective view of a plurality of cores for insertion into a casting and forging. (1) are mono-material comprising their bearings (la) ensuring their positioning in the mold.
- Figure 2 is a view illustrating the cores positioned in the foundry mold before performing the casting operation.
- Figure 3 is a sectional view illustrating the semi-finished product (2) obtained after casting, with the two cores positioned in the areas drawn in thickness.
- FIG. 3 A is identical to Figure 3, but with a hatch representation for the understanding of the drawing
- FIG. 4 is a view of a finished forging (3) with areas including cores (1) in thick drawn parts and solid areas.
- ⁇ 4A is the same as Figure 4, but with a hatch representation for the understanding of the drawing,
- Figure 5A1 is identical to Figure 5A, but with a hatching representation for the understanding of the drawing,
- Scheme 5B1 is identical to Scheme 5B, but with a hatch representation for good understanding of the drawing.
- the method according to the invention is distinguished from the prior art by the initial modeling operations of the part including one or more cores (1) mono-material and recyclable and integrating into the same material their bearing (la) positioning .
- These modeling operations allow the definition of parts of parts that must be full and those that have thick drawn by the placement of the cores.
- Upstream modeling combined with the mastery and knowledge of the characteristics of the materials constituting the part and the core or cores make it possible to simulate the flow of the metal around the core or cores which deform during the forging. This allows the optimization of the shape of the cores or placed in the room for its implementation by casting and forging.
- the control of all these data allows us to define the part according to the desired thicknesses
- the method according to the invention also implements a software of values integrating all the data relating to the finished part to obtain, all the data of the core or nuclei, all the data relating to the machine or striking tools, said software calculating the set of deformations of the piece and the nucleus or nuclei to define the initial and final forms to obtain.
- Modeling makes it possible to have no internal defect because the initial shape of the nucleus or nuclei is defined beforehand to meet this objective, for example, the types of defects, release of the core in the burr or drawn of inhomogeneous thickness over any section, can not arrive.
- the modeling makes it possible to have no apparent external defect type withdrawal, trace of crude for example.
- the burr obtained after forging remains exclusively in the casting material and can be easily cut and recycled.
- the method according to the invention also makes it possible to define, among other things, an optimization of the stiffness and, on the other hand, to reduce the weight without deteriorating the behavior of the part.
- the core (s) (x) (1) are further selected and defined with a compression ratio of less than 0.30 to 1500 MPa.
- the core or cores may be of different materials, especially made of sand, but in an optimized version of salt as needed but each core is mono-material. It is possible to recover fully after unstacking the nucleus according to the known methodologies.
- the core can be removed in particular by thermal deburring or mechanical deburring when it is sand, or air / water pressure if the core is in salt.
- the evacuation of the nucleus (s) is carried out conventionally by means of orifices provided on the shell and the striking matrix.
- the solution provided thus allows optimization of the manufacture of hollow light alloy parts in whole or part of their volume by the implementation of the casting of the alloy and the forging of the part.
- the same part treated by the process according to the invention can have, according to the modelizations, a single hollow zone for the reception of a core, a plurality of alternating hollow zones with solid zones, the hollow zones receiving cores in corresponding number.
- the staves (la) can be multidirectional.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL11719334T PL2555886T3 (pl) | 2010-04-06 | 2011-04-05 | Sposób wytwarzania odkuwek z lekkiego stopu zawierających sekcje pełne lub ze zmniejszoną grubością |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1052586A FR2958193B1 (fr) | 2010-04-06 | 2010-04-06 | Procede de fabrication de pieces forgees en alliage leger incorporant des sections pleines ou tirees d'epaisseur |
PCT/FR2011/050757 WO2011124836A1 (fr) | 2010-04-06 | 2011-04-05 | Procede de fabrication de pieces forgees en alliage leger incorporant des sections pleines ou tirees d'epaisseur |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2555886A1 true EP2555886A1 (fr) | 2013-02-13 |
EP2555886B1 EP2555886B1 (fr) | 2014-06-25 |
Family
ID=43086977
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11719334.2A Active EP2555886B1 (fr) | 2010-04-06 | 2011-04-05 | Procede de fabrication de pieces forgees en alliage leger incorporant des sections pleines ou tirees d'epaisseur |
Country Status (13)
Country | Link |
---|---|
US (1) | US8701741B2 (fr) |
EP (1) | EP2555886B1 (fr) |
JP (1) | JP5850910B2 (fr) |
CN (1) | CN102917815B (fr) |
BR (1) | BR112012025340B1 (fr) |
ES (1) | ES2505499T3 (fr) |
FR (1) | FR2958193B1 (fr) |
HR (1) | HRP20140914T1 (fr) |
PL (1) | PL2555886T3 (fr) |
PT (1) | PT2555886E (fr) |
RS (1) | RS53538B1 (fr) |
RU (1) | RU2578282C2 (fr) |
WO (1) | WO2011124836A1 (fr) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013517125A (ja) | 2010-01-14 | 2013-05-16 | ノードソン コーポレーション | 個別量の高粘性液体の噴射 |
US9205482B2 (en) * | 2014-03-21 | 2015-12-08 | Alex Global Technology, Inc. | Method for manufacturing integrated aluminum alloy bicycle front fork |
CA2979561C (fr) | 2015-03-13 | 2020-06-09 | Raymond J. Kilmer | Procedes de fabrication de produits corroyes avec des passages internes |
US9579709B2 (en) * | 2015-03-20 | 2017-02-28 | Alex Global Technology, Inc. | Method for manufacturing bicycle front fork having wheel clamping base |
CN104785692B (zh) * | 2015-04-14 | 2016-08-24 | 太原科技大学 | 一种确定隔框锻件变厚度板坯形状尺寸的方法 |
WO2017123995A1 (fr) | 2016-01-14 | 2017-07-20 | Arconic Inc. | Procédés de fabrication de produits forgés et autres produits façonnés |
US11021187B2 (en) | 2017-12-08 | 2021-06-01 | ILJIN USA Corporation | Steering knuckle and method of making the same |
CN114289658B (zh) * | 2021-12-27 | 2023-07-25 | 中国兵器科学研究院宁波分院 | 一种铝合金铸锻的复合成形方法 |
CN114769510B (zh) * | 2022-03-30 | 2024-01-09 | 贺州市旭平首饰有限公司 | 一种首饰失蜡铸造的方法 |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SU114071A1 (ru) * | 1957-03-04 | 1957-11-30 | Д.И. Бережковский | Способ изготовлени поковок дл изделий, имеющих осевое отверстие |
DE3373281D1 (en) | 1983-03-14 | 1987-10-08 | Serio Thomas Di | Method of producing pieces of aluminium or aluminium alloy |
CN85106018B (zh) * | 1985-07-22 | 1988-03-30 | 上海交通大学 | 低塑性铝硅铜合金连杆的铸锻工艺 |
JP2717440B2 (ja) * | 1989-04-06 | 1998-02-18 | マツダ株式会社 | 塑性結合方法 |
DE19547388A1 (de) * | 1995-12-19 | 1997-06-26 | Bayerische Motoren Werke Ag | Herstellverfahren für ein Guß-Maschinenteil mit einer durch Bruchtrennen mehrteilig gestalteten Lageranordnung |
JP3248675B2 (ja) * | 1996-12-27 | 2002-01-21 | 株式会社シマノ | 自転車用クランクの製造方法 |
JP3248676B2 (ja) * | 1996-12-27 | 2002-01-21 | 株式会社シマノ | 自転車用クランクとその製造方法 |
JP3149374B2 (ja) * | 1996-12-27 | 2001-03-26 | 株式会社シマノ | 自転車用中空クランクとその製造方法 |
FR2803232B1 (fr) * | 1999-12-29 | 2002-04-26 | Serio Emile Di | Procede perfectionne pour fabriquer des pieces en alliage leger |
FR2818565B1 (fr) | 2000-12-27 | 2003-07-04 | Serio Emile Di | Procede de fabrication de pieces moulees puis forgees comprenant un ou deux evidements et installation de mise en oeuvre |
EP1350714A1 (fr) * | 2002-03-19 | 2003-10-08 | Campagnolo Srl | Bras de manivelle d'une bicyclette et procédé de fabrication |
US6564675B1 (en) * | 2002-07-23 | 2003-05-20 | Cheng-Xun Jiang | Crank arm for bicycles |
JP2004136323A (ja) * | 2002-10-17 | 2004-05-13 | Mazda Motor Corp | 軽合金複合部材の製造方法 |
JP2004340307A (ja) * | 2003-05-16 | 2004-12-02 | Toyota Motor Corp | 中空クランク軸 |
EP1806188A1 (fr) * | 2006-01-10 | 2007-07-11 | Yu, Chai-chi | Moule et procédé de fabrication d'une manivelle |
FR2921574B1 (fr) * | 2007-09-28 | 2010-04-16 | Sifcor | Procede de fabrication de pieces forgees creuses et pieces ainsi obtenues |
-
2010
- 2010-04-06 FR FR1052586A patent/FR2958193B1/fr not_active Expired - Fee Related
-
2011
- 2011-04-05 WO PCT/FR2011/050757 patent/WO2011124836A1/fr active Application Filing
- 2011-04-05 BR BR112012025340-9A patent/BR112012025340B1/pt active IP Right Grant
- 2011-04-05 EP EP11719334.2A patent/EP2555886B1/fr active Active
- 2011-04-05 ES ES11719334.2T patent/ES2505499T3/es active Active
- 2011-04-05 US US13/638,945 patent/US8701741B2/en active Active
- 2011-04-05 PL PL11719334T patent/PL2555886T3/pl unknown
- 2011-04-05 PT PT117193342T patent/PT2555886E/pt unknown
- 2011-04-05 RU RU2012146973/02A patent/RU2578282C2/ru active
- 2011-04-05 JP JP2013503156A patent/JP5850910B2/ja active Active
- 2011-04-05 RS RSP20140502 patent/RS53538B1/en unknown
- 2011-04-05 CN CN201180017871.9A patent/CN102917815B/zh active Active
-
2014
- 2014-09-24 HR HRP20140914AT patent/HRP20140914T1/hr unknown
Non-Patent Citations (1)
Title |
---|
See references of WO2011124836A1 * |
Also Published As
Publication number | Publication date |
---|---|
US20130098575A1 (en) | 2013-04-25 |
FR2958193A1 (fr) | 2011-10-07 |
BR112012025340A2 (pt) | 2016-06-28 |
RU2578282C2 (ru) | 2016-03-27 |
RU2012146973A (ru) | 2014-05-20 |
FR2958193B1 (fr) | 2012-06-29 |
BR112012025340B1 (pt) | 2020-11-17 |
PL2555886T3 (pl) | 2014-11-28 |
ES2505499T3 (es) | 2014-10-10 |
HRP20140914T1 (hr) | 2014-11-07 |
RS53538B1 (en) | 2015-02-27 |
EP2555886B1 (fr) | 2014-06-25 |
CN102917815B (zh) | 2015-02-25 |
US8701741B2 (en) | 2014-04-22 |
JP2013523457A (ja) | 2013-06-17 |
JP5850910B2 (ja) | 2016-02-03 |
PT2555886E (pt) | 2014-09-26 |
CN102917815A (zh) | 2013-02-06 |
WO2011124836A1 (fr) | 2011-10-13 |
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