WO2012085427A1 - Procede de fabrication de noyau de sel par compaction isostatique pour des pieces mettant en oeuvre des operations successives de fonderie et de forgeage - Google Patents
Procede de fabrication de noyau de sel par compaction isostatique pour des pieces mettant en oeuvre des operations successives de fonderie et de forgeage Download PDFInfo
- Publication number
- WO2012085427A1 WO2012085427A1 PCT/FR2011/053052 FR2011053052W WO2012085427A1 WO 2012085427 A1 WO2012085427 A1 WO 2012085427A1 FR 2011053052 W FR2011053052 W FR 2011053052W WO 2012085427 A1 WO2012085427 A1 WO 2012085427A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- core
- foundry
- salt
- preform
- casting
- 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.)
- Ceased
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/10—Cores; Manufacture or installation of cores
- B22C9/105—Salt cores
-
- 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 relates to the technical sector of the design of cores for castings and forged thereafter.
- the core, foundry allows for hollow shapes in foundry parts. It is usually made of sand or salt.
- FIGS. 1A-1B show a core of blown sand or blown salt core before and after assembling the particles.
- the sand (1) is coated with a binder
- kernel salt blown using the same method the operation is carried out under similar conditions, with the same constraints and disadvantages, in particular porosity.
- the technique of manufacturing the salt core consists of a first stamping operation followed by sintering of a salt powder mixture with a binder and a release agent.
- Salt grains represent (3) and (4) the bond obtained from the grains according to the process. Forging leads to obtaining a core that is strong enough to handle. Its solidity is completed after a sintering operation at high temperature.
- the binder is in a semi-solid or liquid state and fills a portion of the porosities that persist after stamping.
- the bonds established by the binder give the core a high breaking strength but the compressibility remains high because all the porosities (p) are not filled.
- the stamping operation causes limitations of shapes and sizes to form the core.
- the solutions implemented according to the prior art therefore have limitations of use with a degree of porosity of the core obtained which may have disadvantages during casting of the foundry material.
- the core obtained according to the aforementioned methods, and their heterogeneous structure are partially unsuitable for other treatments, such as, for example, a forging operation.
- the Applicant is the designer of the COBAP process ESS (registered trademark) defined in the European patent 1 19 365.
- This process uses two successive casting operations for aluminum alloys to obtain a preform, which is then put into a forging die to be forged.
- This technology is very widely exploited and developed by the Applicant, but also by others, since the EP 1 19 365 patent is in the public domain.
- gases can come from the combustion of the resins or binders forming part of the core.
- the gas evacuation duct ensures (s) the positioning of the core in the mold during the molding operation. This therefore generates a very particular structure, with technical constraints related to this particular implementation, with in particular specific means for sealing the preform blank.
- Patent EP 850 825 also discloses the use of a core of lost material to form the hollow part of a bicycle pedal crank. This core is extended by a support portion for positioning the support within the foundry mold in which the metal is cast.
- the forging operation that follows requires the partial removal of the core. This therefore requires very specific operations with risks of leaving debris of the core in the mold that can be troublesome and create areas of weakness during the forging operation.
- the Applicant has turned in his approach in a different way from the techniques described above, on a new manufacturing design of the foundry core can be achieved without structural modification in the pre form for the forging operation of the preform and thus the core surrounded by solid metal at pressures of the order of 600 to 700 MPa.
- the solution found and tested by numerous tests has validated the choice of the Applicant for the manufacture of this core.
- the method of manufacturing the salt core to be introduced into a foundry mold by casting a material known in the foundry to obtain a preform is remarkable in that the core is a salt powder and undergoes for its shaping an isostatic pressing operation of the salt powder, the core obtained to the desired shapes being then introduced into the foundry mold to achieve the shape to be obtained, and the shape resulting from the foundry operation is a preform including the salt powder core obtained by isostatic compression, the said preform being then forged at a pressure between 600 and 700 MPa in order to obtain the final shape the product to be obtained, and the core is then evacuated.
- FIGS. 1A-1B are views showing the micro structure of a core of salt or blown sand before and after assembly according to the prior art
- FIGS. 2A-2B are views showing the micro structure of a salt core undergoing the stamping and sintering operations according to the prior art.
- FIGS. 3A-3B are views showing the micro structure of an isostatically compacted salt core. according to the invention.
- FIG. 4 is a diagram representing, according to the ratio of compressibility and deformation, the curves corresponding to cores obtained according to the known techniques, blown salt core, blown sand core, sintered salt core, and according to the invention, compacting core isostatic.
- the core (10) is made of salt powder.
- the kernel is shaped by isostatic compression by introducing the salt powder into the a mold having a very high yield strength and a very good ability to return to its original shape after deformation.
- the mold is sealed by introducing into an isostatic pressure chamber most often containing a pressure-bearing liquid, the vector of this pressure may also be gas.
- the said enclosure is closed and pressurized. This pressure is applied to the salt powder through the mold.
- the grains of salt powder deform can fragment and finally agglomerate to form a compact without porosity.
- the high pressure applied and its homogeneous distribution in the salt powder gives a compact core with very good cohesion.
- the foundry preform thus obtained is then forged with the salt core compacted by isostatic pressing at a pressure of 600 to 700 MPa.
- the salt core which has been compacted undergoes no loss of volume during the forging operation being protected by the preform itself and having been compacted with a virtual absence of vacuum between the constitutive grains of the core.
- the configuration of the core according to the invention gives it a very low compressibility.
- the design of the casting which is then forged with the core according to the invention is facilitated.
- the press force during the forging serves only to deform the core and the metal in a deviatoric manner, the rise in pressure not being affected by a decrease in the volume of the core.
- the process uses one or more salt powder cores obtained by isostatic compaction in the foundry mold.
- the diagram shown in FIG. 4 thus highlights the compressibility curves of the core in each type of known embodiment mentioned above and according to the invention. There is thus the very clear differentiation which is obtained with the salt nucleus by isostatic compaction with regard to the prior art. In essence, this table highlights a specific advantage of the method according to the invention compared to the prior art. At a forging pressure of 600 MPa, the deformation of the salt core by compression was measured.
- the deformation rate of the salt nucleus by isostatic compression is only 4%, whereas the deformations for a sintered salt core are 24.2%, for a sand core of 29% already at a pressure of 350 MPa, and of , 2% for a puffed salt core.
- the Applicant has therefore demonstrated the use of a salt core as part of the casting process of aluminum or aluminum alloy casting for the production of a foundry preform, said preform being transported for a forging operation at a pressure of 600 to 700 MPa, the use of a salt nucleus obtained by isostatic compression which exhibits, during the forging, a very small compression deformation of the order of 3 to 6%, and more specifically 4%, which makes it possible to work the parts with greater reliability.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
- Forging (AREA)
- Mold Materials And Core Materials (AREA)
- Manufacture Of Alloys Or Alloy Compounds (AREA)
Abstract
Description
Claims
Priority Applications (10)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES11817392.1T ES2675808T3 (es) | 2010-12-23 | 2011-12-19 | Procedimiento de fabricación de núcleo de sal por compactación isostática para unas piezas que implementan unas operaciones sucesivas de fundición y de forjadura |
| RS20180776A RS57440B1 (sr) | 2010-12-23 | 2011-12-19 | Proces za proizvodnju kalupa od soli izostatskom kompakcijom, za livenje delova, sukcesivnom primenom operacija livenja i kovanja |
| EP11817392.1A EP2654988B1 (fr) | 2010-12-23 | 2011-12-19 | Procede de fabrication de noyau de sel par compaction isostatique pour des pieces mettant en oeuvre des operations successives de fonderie et de forgeage |
| JP2013545464A JP5866377B2 (ja) | 2010-12-23 | 2011-12-19 | 連続的な鋳造および鍛造操作を実施する部品のための、静水圧圧縮による塩中子の製造プロセス |
| PL11817392T PL2654988T3 (pl) | 2010-12-23 | 2011-12-19 | Proces produkcji rdzenia solnego przez zagęszczenie isostatyczne dla wyrobów wykorzystujących sukcesywne procesy odlewania i kucia |
| BR112013015968-5A BR112013015968A2 (pt) | 2010-12-23 | 2011-12-19 | método para fabricar núcleo de sal para ser introduzido em um molde de fundição por moldagem de partes, utilização de um núcleo de sal obtido por compactação isostática. |
| CN201180062403.3A CN103347625B (zh) | 2010-12-23 | 2011-12-19 | 通过等静压成型的部件实现连续铸造和锻造操作的盐芯的制造方法 |
| RU2013132875/02A RU2574152C2 (ru) | 2010-12-23 | 2011-12-19 | Способ производства соляного стержня посредством изостатического сжатия для деталей с применением последующих операций литья и ковки |
| HRP20181019TT HRP20181019T1 (hr) | 2010-12-23 | 2011-12-19 | Postupak za proizvodnju jezgri od soli izostatskim sažimanjem za dijelove kojima se provode uzastopne operacije lijevanja i kovanja |
| US13/997,511 US9149866B2 (en) | 2010-12-23 | 2011-12-19 | Process for manufacturing a salt core by isostatic compaction for parts implementing successive foundry and forging operations |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1061116A FR2969516B1 (fr) | 2010-12-23 | 2010-12-23 | Procede de fabrication de noyau de sel par compaction isostatique uilisable en fonderie ou en fonderie-forgeage |
| FR1061116 | 2010-12-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2012085427A1 true WO2012085427A1 (fr) | 2012-06-28 |
Family
ID=44265717
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/FR2011/053052 Ceased WO2012085427A1 (fr) | 2010-12-23 | 2011-12-19 | Procede de fabrication de noyau de sel par compaction isostatique pour des pieces mettant en oeuvre des operations successives de fonderie et de forgeage |
Country Status (14)
| Country | Link |
|---|---|
| US (1) | US9149866B2 (fr) |
| EP (1) | EP2654988B1 (fr) |
| JP (1) | JP5866377B2 (fr) |
| CN (1) | CN103347625B (fr) |
| BR (1) | BR112013015968A2 (fr) |
| ES (1) | ES2675808T3 (fr) |
| FR (1) | FR2969516B1 (fr) |
| HR (1) | HRP20181019T1 (fr) |
| HU (1) | HUE039586T2 (fr) |
| PL (1) | PL2654988T3 (fr) |
| PT (1) | PT2654988T (fr) |
| RS (1) | RS57440B1 (fr) |
| TR (1) | TR201809508T4 (fr) |
| WO (1) | WO2012085427A1 (fr) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114074167A (zh) * | 2021-11-11 | 2022-02-22 | 上海工程技术大学 | 难变形铝合金盘饼类构件及其复合成形方法 |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110621635A (zh) * | 2017-03-31 | 2019-12-27 | 耶路撒冷希伯来大学伊森姆研究发展有限公司 | 压缩盐物体 |
| JP7382762B2 (ja) * | 2019-08-27 | 2023-11-17 | 株式会社ディスコ | レーザー加工装置の加工結果の良否判定方法 |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0119365A1 (fr) | 1983-03-14 | 1984-09-26 | Thomas Di Serio | Procédé pour fabriquer des pièces en aluminium ou en alliage d'aluminium |
| WO1984004264A1 (fr) | 1983-04-26 | 1984-11-08 | Gkn Technology Ltd | Procede de façonnage par pression d'articles metalliques |
| EP0586314A1 (fr) | 1992-08-31 | 1994-03-09 | Cobapress Engineering Sarl | Procédé de fabrication de pièces en alliages coulés avec zones de renforcement |
| EP0850825A2 (fr) | 1996-12-27 | 1998-07-01 | Shimano Inc. | Bras de manivelle d'une bicyclette et procédé de fabrication |
| WO2009050382A2 (fr) | 2007-09-28 | 2009-04-23 | C2Ft | Procede de fabrication de pieces forgees creuses et pieces ainsi obtenues |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60501150A (ja) * | 1983-04-26 | 1985-07-25 | ジ−ケイエヌ・テクノロジ−・リミテツド | 金属物品の鋳造方法 |
| GB8314089D0 (en) * | 1983-05-20 | 1983-06-29 | Doulton Ind Products Ltd | Moulding |
| CN85101949A (zh) * | 1985-04-01 | 1987-01-17 | Gkn科技有限公司 | 金属制品的压铸成型方法 |
| DE4023618C2 (de) * | 1990-07-25 | 1993-11-18 | Daimler Benz Ag | Verfahren zur Herstellung von Formhohlkörpern im Plasma-Spritzverfahren |
| US5941651A (en) | 1994-06-10 | 1999-08-24 | Di Serio; Thomas | Process for the fabrication of parts made of cast alloys with reinforcement zones |
| IT1295226B1 (it) * | 1997-10-14 | 1999-05-04 | Magneti Marelli Spa | Impianto per la produzione di manufatti pressocolati o stampati ad iniezione impiegando anime in sale. |
| DE102005018614B4 (de) * | 2005-04-21 | 2016-07-28 | Emil Müller GmbH | Verfahren zur Herstellung von wasserlöslichen Salzkernen |
| JP5324979B2 (ja) * | 2009-03-27 | 2013-10-23 | 株式会社神戸製鋼所 | 疲労強度に優れた粉末鍛造品、粉末鍛造用混合粉末、および破断分割型コンロッド |
-
2010
- 2010-12-23 FR FR1061116A patent/FR2969516B1/fr not_active Expired - Fee Related
-
2011
- 2011-12-19 RS RS20180776A patent/RS57440B1/sr unknown
- 2011-12-19 TR TR2018/09508T patent/TR201809508T4/tr unknown
- 2011-12-19 US US13/997,511 patent/US9149866B2/en not_active Expired - Fee Related
- 2011-12-19 HR HRP20181019TT patent/HRP20181019T1/hr unknown
- 2011-12-19 HU HUE11817392A patent/HUE039586T2/hu unknown
- 2011-12-19 ES ES11817392.1T patent/ES2675808T3/es active Active
- 2011-12-19 JP JP2013545464A patent/JP5866377B2/ja not_active Expired - Fee Related
- 2011-12-19 CN CN201180062403.3A patent/CN103347625B/zh not_active Expired - Fee Related
- 2011-12-19 WO PCT/FR2011/053052 patent/WO2012085427A1/fr not_active Ceased
- 2011-12-19 PT PT118173921T patent/PT2654988T/pt unknown
- 2011-12-19 PL PL11817392T patent/PL2654988T3/pl unknown
- 2011-12-19 BR BR112013015968-5A patent/BR112013015968A2/pt not_active Application Discontinuation
- 2011-12-19 EP EP11817392.1A patent/EP2654988B1/fr not_active Not-in-force
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0119365A1 (fr) | 1983-03-14 | 1984-09-26 | Thomas Di Serio | Procédé pour fabriquer des pièces en aluminium ou en alliage d'aluminium |
| WO1984004264A1 (fr) | 1983-04-26 | 1984-11-08 | Gkn Technology Ltd | Procede de façonnage par pression d'articles metalliques |
| EP0586314A1 (fr) | 1992-08-31 | 1994-03-09 | Cobapress Engineering Sarl | Procédé de fabrication de pièces en alliages coulés avec zones de renforcement |
| EP0850825A2 (fr) | 1996-12-27 | 1998-07-01 | Shimano Inc. | Bras de manivelle d'une bicyclette et procédé de fabrication |
| WO2009050382A2 (fr) | 2007-09-28 | 2009-04-23 | C2Ft | Procede de fabrication de pieces forgees creuses et pieces ainsi obtenues |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114074167A (zh) * | 2021-11-11 | 2022-02-22 | 上海工程技术大学 | 难变形铝合金盘饼类构件及其复合成形方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| HUE039586T2 (hu) | 2019-01-28 |
| HRP20181019T1 (hr) | 2018-08-24 |
| CN103347625A (zh) | 2013-10-09 |
| CN103347625B (zh) | 2015-11-25 |
| PL2654988T3 (pl) | 2018-10-31 |
| FR2969516B1 (fr) | 2013-08-16 |
| US20130299115A1 (en) | 2013-11-14 |
| ES2675808T3 (es) | 2018-07-12 |
| TR201809508T4 (tr) | 2018-07-23 |
| JP2014501622A (ja) | 2014-01-23 |
| BR112013015968A2 (pt) | 2018-07-10 |
| US9149866B2 (en) | 2015-10-06 |
| FR2969516A1 (fr) | 2012-06-29 |
| JP5866377B2 (ja) | 2016-02-17 |
| EP2654988A1 (fr) | 2013-10-30 |
| RU2013132875A (ru) | 2015-01-27 |
| PT2654988T (pt) | 2018-07-06 |
| RS57440B1 (sr) | 2018-09-28 |
| EP2654988B1 (fr) | 2018-05-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101274361B (zh) | 低速真空压挤铸造工艺 | |
| FR2464772A1 (fr) | Procede pour agglomerer et comprimer a chaud une poudre a l'aide d'un recipient recyclable | |
| CA2493445C (fr) | Piece mecanique, et procede de fabrication d'une telle piece mecanique | |
| FR2474911A1 (fr) | Procede de fabrication de pieces metalliques frittees | |
| WO2003047791A1 (fr) | Pieces de fonderie avec une resistance accrue a l'usure | |
| EP2654988B1 (fr) | Procede de fabrication de noyau de sel par compaction isostatique pour des pieces mettant en oeuvre des operations successives de fonderie et de forgeage | |
| EP2074237B1 (fr) | Procede de fabrication de pieces forgees a chaud en alliage de magnesium | |
| EP0461052B1 (fr) | Procédé de moulage à mousse perdue et sous basse pression de pièces en alliage d'aluminium | |
| CN100544858C (zh) | 金属液态压铸锻造双控一次成型的方法 | |
| EP2197606A2 (fr) | Procede de fabrication de pieces forgees creuses et pieces ainsi obtenues | |
| JP2004351472A (ja) | 繊維強化アルミニウム合金ピストンの製造法 | |
| FR3032204B1 (fr) | Piece en alliage d'aluminium bas silicium | |
| FR2944720A1 (fr) | Realisation de pieces a cavites en moulage par injection de poudres metalliques | |
| FR2947468A1 (fr) | Procede de coulee de matiere, utilisation du procede, moule pour la mise en oeuvre du procede et objets fabriques selon le procede ou dans le moule, ainsi que noyau a placer dans un tel moule | |
| FR2766743A1 (fr) | Outillage de compression de poudre pour installation de frittage | |
| FR2504425A1 (fr) | Procede de fabrication d'une piece en metal fritte a partir d'un melange pateux moule, et moule pour la mise en oeuvre du procede | |
| CN119859757B (zh) | 一种钛废料回收制备高性能表面改性钛过滤器的方法 | |
| FR2528743A1 (fr) | Procede et dispositif de fabrication de pieces minces de forme complexe par compaction isostatique a chaud | |
| RU2574152C2 (ru) | Способ производства соляного стержня посредством изостатического сжатия для деталей с применением последующих операций литья и ковки | |
| BE885152A (fr) | Procede pour agglomere et comprimer a chaud une poudre a l'aide d'un recipient recyclable | |
| FR2619035A1 (fr) | Procede pour fabriquer des elements de construction a partir de poudres metalliques ou non metalliques | |
| KR0128359B1 (ko) | 차량용 경량복합재의 브레이크디스크제조방법 | |
| KR20020083822A (ko) | 스퀴즈 캐스팅 공법을 이용한 브레이크 드럼의 제조방법 | |
| BE823111A (fr) | Procede de fabrication de produits extra-durs | |
| FR2819205A1 (fr) | Noyau de fonderie a base de borates de potassium et procede de fabrication d'un tel noyau |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 11817392 Country of ref document: EP Kind code of ref document: A1 |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 2011817392 Country of ref document: EP |
|
| ENP | Entry into the national phase |
Ref document number: 2013545464 Country of ref document: JP Kind code of ref document: A |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| ENP | Entry into the national phase |
Ref document number: 2013132875 Country of ref document: RU Kind code of ref document: A |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 13997511 Country of ref document: US |
|
| REG | Reference to national code |
Ref country code: BR Ref legal event code: B01A Ref document number: 112013015968 Country of ref document: BR |
|
| ENP | Entry into the national phase |
Ref document number: 112013015968 Country of ref document: BR Kind code of ref document: A2 Effective date: 20130621 |