EP1715970A2 - Noyaux de sel solubles dans l'eau pour coulee sous pression - Google Patents
Noyaux de sel solubles dans l'eau pour coulee sous pressionInfo
- Publication number
- EP1715970A2 EP1715970A2 EP05714987A EP05714987A EP1715970A2 EP 1715970 A2 EP1715970 A2 EP 1715970A2 EP 05714987 A EP05714987 A EP 05714987A EP 05714987 A EP05714987 A EP 05714987A EP 1715970 A2 EP1715970 A2 EP 1715970A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- parts
- weight
- water
- salt
- die 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.)
- Withdrawn
Links
- 150000003839 salts Chemical group 0.000 title claims abstract description 32
- 238000004512 die casting Methods 0.000 title claims abstract description 13
- 239000000203 mixture Substances 0.000 claims abstract description 13
- 229910021538 borax Inorganic materials 0.000 claims abstract description 7
- 238000005245 sintering Methods 0.000 claims abstract description 7
- 239000004328 sodium tetraborate Substances 0.000 claims abstract description 7
- 235000010339 sodium tetraborate Nutrition 0.000 claims abstract description 7
- 239000000454 talc Substances 0.000 claims abstract description 7
- 229910052623 talc Inorganic materials 0.000 claims abstract description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 6
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000010439 graphite Substances 0.000 claims abstract description 6
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 6
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 6
- 239000011777 magnesium Substances 0.000 claims abstract description 6
- 230000006835 compression Effects 0.000 claims abstract description 5
- 238000007906 compression Methods 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 238000007792 addition Methods 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- YLQBMQCUIZJEEH-UHFFFAOYSA-N Furan Chemical compound C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 238000010120 permanent mold casting Methods 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
Definitions
- the present invention relates to water-soluble salt cores for die casting with the features of the preamble of claim 1.
- salt cores for foundry purposes which are washed out after the casting of parts, have long been known, as have attempts to optimize them by adding additives. It was found in DE-C-14 83 641 that the addition of up to 10% borax, magnesium oxide or talc improves the resilience of salt cores made of NaCl and / or KC1.
- DE-A-19 34 787 proposes the addition of a synthetic resin binder and water glass to avoid pressing and sintering. These additions are also known from US-A-37 64 575.
- Such salt cores were used in the past for permanent mold casting. These salt cores could not withstand die casting. Instead, sand cores have been used here for decades, most of which are made with binders containing phenol and furan. Since this technology is based on the processing of environmentally harmful substances, it is classified as critical and requires considerable, costly protective measures. There is therefore a need for environmentally friendly, e.g. salt-based cores for the die casting process
- the object of the present invention is to provide a method for producing a salt core for die casting which produces salt cores which meet the requirements of die casting and which are produced from components which do not contain any environmentally harmful components.
- water-soluble salt cores for die casting which are produced by compressing a mixture of water-soluble salts under pressure and then sintering 0.5 to 2 parts by weight of graphite or talc come, characterized in that the compression takes place under a pressure of between 300 and 900 N / mm 2 .
- the pressed salt cores are sintered at 650 - 730 ° C between 1 / 2h and 2h.
- This mixture is subjected to a pressure of 700 N / mm 2 and at 720 °
- the salt core is suitable for die casting.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
- Mold Materials And Core Materials (AREA)
Abstract
La présente invention concerne des noyaux de sel solubles dans l'eau destinés à la coulée sous pression, qui sont produits par compression puis frittage d'un mélange de sels solubles dans l'eau. Selon l'invention, le mélange fait intervenir, sur 100 parties pondérales de sel, entre 4 et 5 parties pondérales de borax, entre 2 et 3 parties pondérales de magnésium et entre 0,5 et 2 parties pondérales de graphite ou de talc, et la compression s'effectue sous une pression comprise entre 300 et 900 N/mm2.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102004008096 | 2004-02-19 | ||
| DE102004038288A DE102004038288A1 (de) | 2004-02-19 | 2004-08-06 | Wasserlösliche Salzkerne |
| PCT/DE2005/000272 WO2005080022A2 (fr) | 2004-02-19 | 2005-02-17 | Noyaux de sel solubles dans l'eau pour coulee sous pression |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1715970A2 true EP1715970A2 (fr) | 2006-11-02 |
Family
ID=34888796
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP05714987A Withdrawn EP1715970A2 (fr) | 2004-02-19 | 2005-02-17 | Noyaux de sel solubles dans l'eau pour coulee sous pression |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20080035294A1 (fr) |
| EP (1) | EP1715970A2 (fr) |
| DE (1) | DE112005000950A5 (fr) |
| WO (1) | WO2005080022A2 (fr) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102005018614B4 (de) * | 2005-04-21 | 2016-07-28 | Emil Müller GmbH | Verfahren zur Herstellung von wasserlöslichen Salzkernen |
| CN1314498C (zh) * | 2005-09-12 | 2007-05-09 | 华南理工大学 | 一种挤压铸造用可溶盐芯及其制作方法 |
| DE102007009274A1 (de) | 2007-02-26 | 2008-08-28 | Daimler Ag | Wasserlösliche Gießkerne für den Leichtmetallguss |
| DE102008039208A1 (de) | 2008-08-20 | 2009-02-12 | Heppes, Frank, Dipl.-Ing. | Urformkerne zur Herstellung umfangreich konturierter, hinterschnittener Hohlräume in Urformteilen, damit hergestellte Urformteile sowie Verfahren zur Herstellung, Anwendung und Entfernung der Kerne |
| WO2013152851A2 (fr) * | 2012-04-10 | 2013-10-17 | Emil Müller GmbH | Noyaux à base de sel, procédé de fabrication de ces noyaux et leur utilisation |
| DE102012022390B3 (de) * | 2012-11-15 | 2014-04-03 | Audi Ag | Verfahren zur kalten Herstellung eines Salzkerns für das Druckgießen |
| CN104399865B (zh) * | 2014-12-01 | 2016-08-24 | 湖南江滨机器（集团）有限责任公司 | 一种水溶性石墨复合盐芯材料、石墨复合盐芯及其制备方法 |
| JP6914783B2 (ja) * | 2017-08-31 | 2021-08-04 | ローレルバンクマシン株式会社 | 物品管理装置 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1483641A1 (de) * | 1965-06-12 | 1969-02-27 | Schmidt Gmbh Karl | Verfahren zum Eingiessen von Hohlraeumen |
| GB1274966A (en) * | 1969-05-16 | 1972-05-17 | Schmidt Gmbh Karl | Core for use in foundries and a method of forming cavities in castings |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3963818A (en) * | 1971-10-29 | 1976-06-15 | Toyo Kogyo Co., Ltd. | Water soluble core for pressure die casting and process for making the same |
| US3968828A (en) * | 1973-11-14 | 1976-07-13 | Ashland Oil, Inc. | Method of casting non-ferrous alloys |
-
2005
- 2005-02-17 DE DE112005000950T patent/DE112005000950A5/de not_active Withdrawn
- 2005-02-17 EP EP05714987A patent/EP1715970A2/fr not_active Withdrawn
- 2005-02-17 US US10/589,629 patent/US20080035294A1/en not_active Abandoned
- 2005-02-17 WO PCT/DE2005/000272 patent/WO2005080022A2/fr not_active Ceased
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1483641A1 (de) * | 1965-06-12 | 1969-02-27 | Schmidt Gmbh Karl | Verfahren zum Eingiessen von Hohlraeumen |
| GB1274966A (en) * | 1969-05-16 | 1972-05-17 | Schmidt Gmbh Karl | Core for use in foundries and a method of forming cavities in castings |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2005080022A3 (fr) | 2006-03-02 |
| WO2005080022A2 (fr) | 2005-09-01 |
| DE112005000950A5 (de) | 2007-05-24 |
| US20080035294A1 (en) | 2008-02-14 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| 17P | Request for examination filed |
Effective date: 20060825 |
|
| AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR |
|
| DAX | Request for extension of the european patent (deleted) | ||
| 17Q | First examination report despatched |
Effective date: 20080725 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
| 18D | Application deemed to be withdrawn |
Effective date: 20091215 |