EP0881014B1 - Einrichtung zum Aushärten von Giesserei-Kernen - Google Patents

Einrichtung zum Aushärten von Giesserei-Kernen Download PDF

Info

Publication number: EP0881014B1
Authority: EP; European Patent Office
Prior art keywords: catalyst; core; block; evaporator part; shaped evaporator
Prior art date: 1997-05-27
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.): Expired - Lifetime

Application number

EP97108678A

Other languages

German (de)

English (en)

French (fr)

Other versions

EP0881014A1 (de

Inventor

Wilhelm Bovens

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Lueber GmbH

Luber GmbH

Original Assignee

Lueber GmbH

Luber GmbH

Priority date (The priority date 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 date listed.)

1997-05-27

Filing date

1997-05-30

Publication date

2001-10-04

1997-05-27 Priority to US08/863,913 priority Critical patent/US5971056A/en

1997-05-28 Priority to CZ19971654A priority patent/CZ289410B6/cs

1997-05-30 Application filed by Lueber GmbH, Luber GmbH filed Critical Lueber GmbH

1997-05-30 Priority to ES97108678T priority patent/ES2163064T3/es

1997-05-30 Priority to EP97108678A priority patent/EP0881014B1/de

1997-05-30 Priority to AT97108678T priority patent/ATE206333T1/de

1997-05-30 Priority to DE59704789T priority patent/DE59704789D1/de

1998-12-02 Publication of EP0881014A1 publication Critical patent/EP0881014A1/de

2001-10-04 Application granted granted Critical

2001-10-04 Publication of EP0881014B1 publication Critical patent/EP0881014B1/de

2017-05-30 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Links

239000003054 catalyst Substances 0.000 claims abstract description 35
239000000919 ceramic Substances 0.000 claims abstract description 16
239000012159 carrier gas Substances 0.000 claims abstract description 10
UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims abstract description 6
239000007789 gas Substances 0.000 claims abstract description 5
PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract 6
HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims abstract 2
239000000203 mixture Substances 0.000 claims description 11
230000009183 running Effects 0.000 claims 2
229910052845 zircon Inorganic materials 0.000 claims 2
GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 claims 2
229910010271 silicon carbide Inorganic materials 0.000 claims 1
RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 abstract description 3
229910001928 zirconium oxide Inorganic materials 0.000 abstract description 3
PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 abstract 2
229910026551 ZrC Inorganic materials 0.000 abstract 1
OTCHGXYCWNXDOA-UHFFFAOYSA-N [C].[Zr] Chemical compound [C].[Zr] OTCHGXYCWNXDOA-UHFFFAOYSA-N 0.000 abstract 1
229910052759 nickel Inorganic materials 0.000 abstract 1
229910021426 porous silicon Inorganic materials 0.000 abstract 1
238000000034 method Methods 0.000 description 10
150000001412 amines Chemical class 0.000 description 6
239000004576 sand Substances 0.000 description 6
238000003958 fumigation Methods 0.000 description 4
238000011144 upstream manufacturing Methods 0.000 description 3
XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
150000003973 alkyl amines Chemical class 0.000 description 2
239000012948 isocyanate Substances 0.000 description 2
150000002513 isocyanates Chemical class 0.000 description 2
239000007788 liquid Substances 0.000 description 2
TZIHFWKZFHZASV-UHFFFAOYSA-N methyl formate Chemical compound COC=O TZIHFWKZFHZASV-UHFFFAOYSA-N 0.000 description 2
238000000465 moulding Methods 0.000 description 2
TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 2
229910052710 silicon Inorganic materials 0.000 description 2
239000010703 silicon Substances 0.000 description 2
238000003860 storage Methods 0.000 description 2
229920003002 synthetic resin Polymers 0.000 description 2
239000000057 synthetic resin Substances 0.000 description 2
NVXLIZQNSVLKPO-UHFFFAOYSA-N Glucosereductone Chemical compound O=CC(O)C=O NVXLIZQNSVLKPO-UHFFFAOYSA-N 0.000 description 1
239000004721 Polyphenylene oxide Substances 0.000 description 1
239000011230 binding agent Substances 0.000 description 1
230000015572 biosynthetic process Effects 0.000 description 1
230000001419 dependent effect Effects 0.000 description 1
238000010586 diagram Methods 0.000 description 1
238000005516 engineering process Methods 0.000 description 1
238000010438 heat treatment Methods 0.000 description 1
125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
238000004519 manufacturing process Methods 0.000 description 1
239000003110 molding sand Substances 0.000 description 1
229920001225 polyester resin Polymers 0.000 description 1
239000004645 polyester resin Substances 0.000 description 1
229920000570 polyether Polymers 0.000 description 1
238000010926 purge Methods 0.000 description 1
229920005989 resin Polymers 0.000 description 1
239000011347 resin Substances 0.000 description 1
230000036962 time dependent Effects 0.000 description 1
239000006200 vaporizer Substances 0.000 description 1

Images

Classifications

- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/12—Treating moulds or cores, e.g. drying, hardening
- B22C9/123—Gas-hardening

Definitions

the present invention relates to a device for hardening foundry cores from a mass containing sand, in which the core to its Hardening in the core molding tool one enriched with a catalyst Gas flow and possibly subsequently exposed to a compressed air flow is, with a mixing stage upstream of the core molding tool for generation a catalyst vapor-carrier gas mixture, which is program-controlled Valve means, pump means and flow meter with a catalyst reservoir as well as with a program-controlled compressed air source in flow connection stands, see EP 0 168 635 A.
Such devices are known and allow cold curing processes such as for example the so-called cold box process, in which the core sand has two components a synthetic resin system are added, which then with the sand cure as soon as an amine, such as an alkylamine or a methyl formate, as a catalyst is added.
a synthetic resin system such as an alkylamine or a methyl formate, as a catalyst is added.
One component could e.g. a polyester resin, a polyether resin or any synthetic resin with a liquid consistency be with reactive hydroxyl groups; the second component is definitely a organic isocyanate.
the two components are made with the molding sand mixed thoroughly and then deformed. In order to catalyze the reaction here and the handling and use of the amines in particular are reliable various efforts have been made so far.
the known methods have a common disadvantage in that Hardening process takes a significant amount of time. For example, takes the formation of the core-sand mixture in the mold on a core-shooting machine often only a fraction of a second, whereas the subsequent gassing to harden the core over several seconds has taken place, which naturally makes fumigation an enormous cost bearer.
valve means Form a two-way valve in the flow line of the storage tank and this is temporarily switchable to a return line to the reservoir Pressure equalization in the flow system.
valve means as well as the other switching and control elements of the device programmable.
porous ceramics have a very large inner surface, which is completely wetted by the inflowing catalyst, after which the inflowing carrier gas, usually air, in the most intensive contact with the wetted surface comes and so an optimal discharge of the catalyst in the core causes what a corresponding reductone of the amount of catalyst allowed.
Such a ceramic evaporator can be made of silicon carbite, aluminum oxide, zirconium oxide oder-Carbit exist and be chrome-active nickel-plated.
Its flow can be in pressure steps or with a proportional increase in pressure respectively.
the block-shaped ceramic part a permanent magnet is arranged.
the ceramic body be enriched with iron oxide.
These units as well as others, such as one that can be added to the mixing stage Continuous-flow heater 11 and temperature sensor 12 are via a Control level 13 programmable.
valve means 2 are now in the feed line 7 of the storage container 5 temporarily switchable to a return line 8 to the reservoir 5 for pressure equalization in the flow system, as the above in detail has been described.
a permanent magnet 14 can be effective on the ceramic body 9.
the metering valve 2 becomes dependent the signal of the flow meter 4 or time-dependent via the control stage 13 switched, after which the catalyst enters the mixing stage. At the same time or afterwards the transport air is then supplied and then the mixture, if appropriate via a flow heater 11, passed to the core. After that you can purge air can be supplied as required.
the porous ceramic vaporizer also allows optimal discharge of the catalyst in the core and accordingly a substantial reduction the amount of catalyst as stated above. Further is achieved that corresponds to the large air flow through the ceramic evaporator the catalyst is gradually transported into the core, so that residual amines reach the core when it has already hardened is what significantly improves its surface hardness.

Landscapes

Engineering & Computer Science (AREA)
Mechanical Engineering (AREA)
Catalysts (AREA)
Mold Materials And Core Materials (AREA)
Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
Casting Devices For Molds (AREA)
Magnetic Heads (AREA)

EP97108678A 1997-05-27 1997-05-30 Einrichtung zum Aushärten von Giesserei-Kernen Expired - Lifetime EP0881014B1 (de)

Priority Applications (6)

Application Number	Priority Date	Filing Date	Title
US08/863,913 US5971056A (en)	1997-05-27	1997-05-27	Device for hardening foundry cores and use thereof
CZ19971654A CZ289410B6 (cs)	1997-05-27	1997-05-28	Zařízení k vytvrzování slévárenských jader
ES97108678T ES2163064T3 (es)	1997-05-27	1997-05-30	Instalacion para el endurecimiento de machos de arena.
EP97108678A EP0881014B1 (de)	1997-05-27	1997-05-30	Einrichtung zum Aushärten von Giesserei-Kernen
AT97108678T ATE206333T1 (de)	1997-05-27	1997-05-30	Einrichtung zum aushärten von giesserei-kernen
DE59704789T DE59704789D1 (de)	1997-05-27	1997-05-30	Einrichtung zum Aushärten von Giesserei-Kernen

Applications Claiming Priority (3)

Application Number	Priority Date	Filing Date	Title
US08/863,913 US5971056A (en)	1997-05-27	1997-05-27	Device for hardening foundry cores and use thereof
CZ19971654A CZ289410B6 (cs)	1997-05-27	1997-05-28	Zařízení k vytvrzování slévárenských jader
EP97108678A EP0881014B1 (de)	1997-05-27	1997-05-30	Einrichtung zum Aushärten von Giesserei-Kernen

Publications (2)

Publication Number	Publication Date
EP0881014A1 EP0881014A1 (de)	1998-12-02
EP0881014B1 true EP0881014B1 (de)	2001-10-04

Family

ID=27179637

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP97108678A Expired - Lifetime EP0881014B1 (de)	1997-05-27	1997-05-30	Einrichtung zum Aushärten von Giesserei-Kernen

Country Status (6)

Country	Link
US (1)	US5971056A (cs)
EP (1)	EP0881014B1 (cs)
AT (1)	ATE206333T1 (cs)
CZ (1)	CZ289410B6 (cs)
DE (1)	DE59704789D1 (cs)
ES (1)	ES2163064T3 (cs)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE10231883A1 (de) *	2002-07-12	2004-02-12	J. Eberspächer GmbH & Co. KG	Verdampferanordnung, insbesondere zur Erzeugung eines in einem Reformer zur Wasserstoffgewinnung zersetzbaren Kohlenwasserstoff/Mischmaterial-Gemisches

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US6505671B1 (en) *	2000-12-28	2003-01-14	Hayes Lemmerz International, Inc.	Method for producing a sand core
US6520244B2 (en) *	2001-03-14	2003-02-18	Ford Global Technologies, Inc.	Method and apparatus for curing foundry cores
CH695547A5 (de) *	2002-06-17	2006-06-30	Lueber Gmbh	Verfahren und Einrichtung zum Aushärten von Giesserei-Kernen.
US20050082331A1 (en) *	2003-10-17	2005-04-21	Chi-Hong Yang	Tempered glass breaker
US20080060763A1 (en) *	2006-09-11	2008-03-13	Kenn Bishop	Tire bead breaking tool and method of use
CN103521708A (zh) *	2013-08-16	2014-01-22	苏州明志科技有限公司	用于冷芯机的气体发生器催化剂定量控制方法及装置
PL2848332T3 (pl) *	2013-09-11	2016-01-29	Lueber Gmbh	Urządzenie i sposób do utwardzania rdzeni odlewniczych
CN103949583B (zh) *	2014-04-22	2016-08-17	重庆长江造型材料（集团）股份有限公司	热风装置控制系统

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
GB1269202A (en) *	1968-02-14	1972-04-06	Fordath Ltd	Improvements in the production of cores for use in the production of metal castings
DE2025253C3 (de) *	1970-05-23	1975-10-02	Guenther 7012 Schmiden Doll	Verfahren und Einrichtung zum Herstellen von Kernen oder Sandformen
DE2162137C2 (de) *	1971-12-15	1983-01-13	Horst-Werner Ing.(Grad.) 7707 Engen Michel	Anlage zum Aushärten von Sandformen und -kernen für Gießereizwecke
DE2413537C2 (de) *	1974-03-21	1984-11-15	Horst-Werner Ing.(Grad.) 7707 Engen Michel	Vorrichtung zum Herstellen von Kernen für Gießereizwecke
DE2621153A1 (de) *	1976-05-13	1977-11-24	Daimler Benz Ag	Verfahren und einrichtung zum aushaerten von sandformkoerpern
EP0013357A1 (de) *	1978-12-22	1980-07-23	Werner Lüber	Verfahren und Vorrichtung zum Aushärten von Sandkörpern und dadurch erhaltene Formkörper
US4362204A (en) *	1980-03-17	1982-12-07	The Mead Corporation	Method and apparatus for curing a foundry core
US4483384A (en) *	1980-06-02	1984-11-20	Michel Horst Werner	Apparatus for hardening mold parts made of sand for making metal castings
DE3135510C2 (de) *	1981-09-08	1987-05-07	Horst Werner Dipl.-Ing. 7707 Engen Michel	Vorrichtung zum Aushärten von aus Sand unter Beigabe von aushärtbaren Bindemitteln hergestellten Kernen und/oder Formen
DE3340762C2 (de) *	1983-11-10	1986-10-02	Horst Werner Dipl.-Ing. 7707 Engen Michel	Verfahren und Vorrichtung zum Aushärten von aus Sand unter Verwendung eines Bindemittels hergestellten Kernen und/oder Formen, die zum Gießen von Formkörpern aus metallischen oder nicht metallischen schmelzflüssigen Ausgangsmaterialien Verwendung finden
US4540531A (en) *	1984-05-04	1985-09-10	Ashland Oil, Inc.	Vapor generator and its use in generating vapors in a pressurized gas
DE3422742A1 (de) *	1984-06-19	1985-12-19	Michel, Horst Werner, Dipl.-Ing., 7707 Engen	Steuerung fuer eine vorrichtung zum aushaerten von sandkernen und/oder -formen
CH667821A5 (en) *	1985-08-02	1988-11-15	Werner Lueber	Appts. for hardening casting cores - having time valves controlling the flow of air and hardener gas through core box
CH670405A5 (cs) *	1985-12-19	1989-06-15	Werner Lueber
CH674480A5 (cs) *	1987-10-02	1990-06-15	Franz Gaehler
DE4112701A1 (de) *	1991-04-18	1992-10-22	Dossmann Gmbh Eisengiesserei U	Verfahren und vorrichtung der herstellung von sandkernen fuer den metallguss
DE4213845C2 (de) *	1992-04-28	1997-01-09	Hottinger Adolf Masch	Vorrichtung zum separaten Begasen von porösen Gießereikernen

1997
- 1997-05-27 US US08/863,913 patent/US5971056A/en not_active Expired - Lifetime
- 1997-05-28 CZ CZ19971654A patent/CZ289410B6/cs not_active IP Right Cessation
- 1997-05-30 AT AT97108678T patent/ATE206333T1/de active
- 1997-05-30 DE DE59704789T patent/DE59704789D1/de not_active Expired - Lifetime
- 1997-05-30 EP EP97108678A patent/EP0881014B1/de not_active Expired - Lifetime
- 1997-05-30 ES ES97108678T patent/ES2163064T3/es not_active Expired - Lifetime

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE10231883A1 (de) *	2002-07-12	2004-02-12	J. Eberspächer GmbH & Co. KG	Verdampferanordnung, insbesondere zur Erzeugung eines in einem Reformer zur Wasserstoffgewinnung zersetzbaren Kohlenwasserstoff/Mischmaterial-Gemisches
DE10231883B4 (de) *	2002-07-12	2008-01-17	J. Eberspächer GmbH & Co. KG	Verdampferanordnung, insbesondere zur Erzeugung eines in einem Reformer zur Wasserstoffgewinnung zersetzbaren Kohlenwasserstoff/Mischmaterial-Gemisches

Also Published As

Publication number	Publication date
US5971056A (en)	1999-10-26
EP0881014A1 (de)	1998-12-02
ES2163064T3 (es)	2002-01-16
ATE206333T1 (de)	2001-10-15
CZ165497A3 (cs)	1998-12-16
DE59704789D1 (de)	2001-11-08
CZ289410B6 (cs)	2002-01-16

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