EP1511939B1 - Herstellung von mit mineralguss ausgekleideten maschinenteilen - Google Patents
Herstellung von mit mineralguss ausgekleideten maschinenteilen Download PDFInfo
- Publication number
- EP1511939B1 EP1511939B1 EP02779376A EP02779376A EP1511939B1 EP 1511939 B1 EP1511939 B1 EP 1511939B1 EP 02779376 A EP02779376 A EP 02779376A EP 02779376 A EP02779376 A EP 02779376A EP 1511939 B1 EP1511939 B1 EP 1511939B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- casting
- mineral
- lining
- peripheral housing
- mineral 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.)
- Expired - Lifetime
Links
- 238000005266 casting Methods 0.000 title claims abstract description 63
- 229910052500 inorganic mineral Inorganic materials 0.000 title claims abstract description 53
- 239000011707 mineral Substances 0.000 title claims abstract description 53
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 15
- 238000000034 method Methods 0.000 claims abstract description 37
- 239000007788 liquid Substances 0.000 claims abstract description 5
- 239000003795 chemical substances by application Substances 0.000 claims description 23
- 238000007789 sealing Methods 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 7
- 239000011230 binding agent Substances 0.000 claims description 6
- 239000000945 filler Substances 0.000 claims description 5
- 238000005260 corrosion Methods 0.000 claims description 4
- 230000007797 corrosion Effects 0.000 claims description 4
- 238000004873 anchoring Methods 0.000 claims description 3
- 239000004848 polyfunctional curative Substances 0.000 claims description 3
- 239000006004 Quartz sand Substances 0.000 claims description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 2
- 239000000919 ceramic Substances 0.000 claims description 2
- 239000011521 glass Substances 0.000 claims description 2
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 2
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 2
- 230000002093 peripheral effect Effects 0.000 claims 14
- 230000005540 biological transmission Effects 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 230000003628 erosive effect Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 210000004907 gland Anatomy 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
- F04D29/4286—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps inside lining, e.g. rubber
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S415/00—Rotary kinetic fluid motors or pumps
- Y10S415/915—Pump or portion thereof by casting or molding
Definitions
- the invention relates to a process for the preparation of at least partially with Mineral casting lined machine parts, wherein the mineral casting in the liquid Condition in at least one serving as part of a mold housing element of the machine part is poured, so that the mineral cast after curing a lining element adapted to the inner contour of the housing element forms.
- the present invention is based on the task, the previously known Further develop a method such that eliminates the disadvantages mentioned become.
- a method is to be created by the invention, can be produced with the pump housing for centrifugal pumps, in which the made of mineral cast lining elements as exactly as possible to the inner Contour of the jacket are adapted without the risk that in the manufacture or operation of the pumps to destroy the Mineral casting comes.
- This task is based on a method of the aforementioned Art solved by the fact that the inner surfaces of the housing element before the pouring be treated with a release agent.
- the release agent When using the release agent is also ensured that the mineral casting during the casting process over the entire surface of the inner contour of the housing element adapts. Without any post-processing of the casting or the inner contour the housing element is a large-scale power transmission from the lining element ensured on the outer case.
- the wall thickness of the lining element can in the method according to the invention usefully by a casting process in the housing element be set core.
- the as part of the mold too Insert coming core, which determines the inner contour of the lining element, is removed after hardening or hardening of the mineral casting.
- abrasive, erosive or corrosive media comes as mineral casting expediently a mixture of a binder with filler for Use, wherein the filler is a fine-grained wear and corrosion resistant Material, in particular silicon carbide, quartz sand, glass, Ceramic or a mixture of these materials.
- the filler is a fine-grained wear and corrosion resistant Material, in particular silicon carbide, quartz sand, glass, Ceramic or a mixture of these materials.
- Chemical resistance and wear resistance should be the mixture contain as much filler and as little binder as possible.
- the Mineral cast mixture may be sufficient during the mixing and casting process
- Cast metal mixture may be sufficient during the mixing and pouring process be kept liquid for a long time, then cured by selective heating to become.
- Suitable Kunsarz hardener systems are as commercial products available.
- a useful development of the method according to the invention results, when the housing member in the mineral casting protruding anchoring means having.
- This is any kind of positive connection between the housing part and the lining element, by means of which, for example prevents the Mineralguß stresses from the housing part fall out. This can also be prevented by recesses in the housing part, in which the cast mineral casting anchors itself.
- the anchoring means e.g. Also provided with a corresponding pocket wall element of the Housing part, detachable by means of suitable screwing of the housing part be designed.
- the method according to the invention is particularly suitable Method for the manufacture of pump housings for centrifugal pumps.
- the housing element in this case is a jacket housing part a volute casing of a centrifugal pump.
- At least two interconnected, on the inner surface shell parts treated with the release agent are poured out with the mineral casting, wherein inside the jacket housing parts is a core, which specifies the wall thickness of the lining element during the casting process.
- a core which specifies the wall thickness of the lining element during the casting process.
- the jacket parts become separated from each other, whereupon that of the one-piece lining element destroyed and removed at least partially enclosed core can be.
- the jacket housing parts are joined together again.
- This approach has the advantage that the Mineralgußauscited the spiral housing is one-piece. A mutual sealing of the lining elements the respective housing parts is unnecessary.
- the disadvantage is that the core, through which the shape of the impeller chamber of the centrifugal pump is specified after the casting is enclosed in the mineral casting, so that the core must be destroyed and can not be reused.
- a procedure according to the following method steps offers At first, at least two on the inner surface with the release agent treated jacket housing parts individually poured with the mineral casting, wherein the wall thickness of the lining elements during the casting process respectively a core is given. After hardening or hardening of the mineral casting the core is taken. Then they are lined with the mineral casting Mantelgepliusemaschine joined together, the sealing surfaces of the lining elements be sealed. In this way, the core can be multiply be used. For the sealing preferably elastic seals used.
- the jacket housing parts be poured individually, there is advantageously the possibility the formed by the shell housing parts and the respective core Mold form such that the lining elements in the Protruding sealing surfaces a few millimeters from the jacket housing parts.
- the sealing surfaces of the lining elements with large Force are pressed together.
- the lining elements firmly pressed from the inside to the shell housing parts, creating a good Power transmission ensured by the pumped fluid to the outer housing becomes.
- the formed by the shell housing parts and the respective core Mold be formed such that the lining elements in the area the sealing surfaces behind the Verschraubungsbünden the casing housing parts lying back or flush with these. In this case will be only the forces caused by the elastic seals on the Transfer lining elements, which also ensures a safe application of the Mineral cast body ensures the inner surfaces of the casing housing parts can be.
- a centrifugal pump can be produced, the at least one impeller and at least one wheel chamber receiving the impeller which at least partially with lining elements is lined with mineral casting, wherein the lining elements of a metallic shell casing are enclosed, consisting of at least two jacket housing parts exists, in which the lining elements are shed.
- the centrifugal pump is according to the invention characterized in that between the outer surfaces of the lining elements and the inner surfaces of the Sheath housing parts a filled with a release agent gap exists.
- FIG. 1 shows a dashed line Release agent layer 3.
- a liquid release agent proven on a wax basis.
- release agent T2 commercially Available "release agent T2" from Ebalta Kunststoff GmbH.
- Figure 1a shows the state through the interconnected jacket housing parts 1, 2 and the Core 4 formed mold before the casting process.
- the figure 1 b) is the Gap between the housing elements 1, 2 and the core 4 after the pouring process filled with mineral casting.
- the mineral body molds on the inner contour of the casing housing parts 1, 2 adapted lining element 5, whose inner contour is predetermined by the core 4.
- the core 4 is destroyed and removed.
- the figure 1c) shows the final state of the manufacturing process. After removing the Kerns 4 remains enclosed by the lining element 5 cavity 6th back, which forms the impeller chamber of the centrifugal pump. Through the between the jacket housing parts 1, 2 and the lining element 5 remaining Release agent layer 3 is ensured that the lining element. 5 not firmly connected to the outer housing.
- FIG. 2a shows the molds with the release agent layer 3 before the casting process.
- the both jacket housing parts 1, 2 are poured out individually with mineral casting, in turn, the wall thickness of each formed by the mineral casting Lining element 5, as shown in Figure 2b), specified by the core 4 becomes. After hardening or hardening of the mineral casting are respectively the core 4, which is reusable in the process shown in Figure 2 is, and the plates 7, 8 removed.
- FIG. 2 shows the final state of FIG mated jacket housing parts 1, 2 existing spiral housing.
- the Impeller chamber 6 is sealed from two against each other by means of the sealing elements 9 Lined lining elements 5, which due to the Release agent layer 3 is not fixed to the metallic shell housing parts 1, 2 are connected.
- FIGS. 3 and 4 show a volute casing of a centrifugal pump, which consists of two metallic outer shell housing parts 1 and 2 consists. That in the figures not shown impeller of the centrifugal pump is received by the impeller chamber 6, partially lined with lining elements 5 of mineral casting is. Between the outer surfaces of the lining elements 5 and the Inner surfaces of the shell housing parts 1, 2 is shown in phantom in FIG Release agent layer 3 to see, which ensures that no firm connection between the jacket housing parts 1, 2 and the lining elements 5 exists. Between the sealing surfaces of the lining elements are sealing elements 9 arranged. At the same time, it can be seen in FIG. 3 that the lining elements 5 positively received in the shell housing parts 1, 2 are.
- FIG. 4 also shows gland collars 10, 11 of the jacket housing parts 1, 2 and a connecting flange 12 for the outlet of the centrifugal pump.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Casting Devices For Molds (AREA)
Description
- Figur 1
- schematische Darstellung der Herstellung eines Spiralgehäuses für eine Kreiselpumpe nach einer ersten Variante des erfindungsgemäßen Verfahrens;
- Figur 2
- schematische Darstellung der Herstellung eines Spiralgehäuses für eine Kreiselpumpe nach einer zweiten Variante des erfindungsgemäßen Verfahrens;
- Figur 3
- Querschnittdarstellung eines Spiralgehäuses einer erfindungsgemäßen Kreiselpumpe;
- Figur 4
- Draufsicht auf das Spiralgehäuse gemäß Figur 3.
Claims (11)
- Verfahren zur Herstellung von zumindest teilweise mit Mineralguß ausgekleideten Maschinenteilen, wobei der Mineralguß im flüssigen Zustand in wenigstens ein als Teil einer Gießform dienendes Gehäuseelement (1,2) des Maschinenteils gegossen wird, so daß der Mineralguß nach der Aushärtung ein an die Innenkontur des Gehäuseelementes angepaßtes Auskleidungselement (5) bildet,
dadurch gekennzeichnet, daß die Innenflächen des Gehäuseelementes (1,2) vor dem Ausgießen mit einem Trennmittel (3) behandelt werden. - Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Wandstärke des Auskleidungselementes (5) durch einen beim Gießvorgang in dem Gehäuseelement (1,2) befindlichen Kern (4) vorgegeben wird.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß als Mineralguß ein Gemisch aus einem Bindemittel mit Füllstoff verwendet wird, wobei es sich bei dem Füllstoff um ein feinkörniges verschleiß- und korrosionsbeständiges Material, wie insbesondere Siliziumcarbid, Quarzsand, Glas, Keramik oder eine Mischung aus diesen Materialien, handelt.
- Verfahren nach Anspruch 3, dadurch gekennzeichnet, daß als Bindemittel ein unter Wärmezufuhr aushärtendes Kunstharz-Härtersystem verwendet wird.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß das Gehäuseelement in den Mineralguß hineinragende Verankerungsmittel aufweist oder sonstwie formschlüssig mit dem Auskleidungselement verbunden ist.
- Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß es sich bei dem Gehäuseelement um ein Mantelgehäuseteil eines Spiralgehäuses einer Kreiselpumpe handelt.
- Verfahren nach Anspruch 6, gekennzeichnet durch die folgenden Verfahrensschritte:wenigstens zwei miteinander verbundene, an der Innenfläche mit dem Trennmittel (3) behandelte Mantelgehäuseteile (1,2) werden mit dem Mineralguß ausgegossen, wobei sich im Inneren der Mantelgehäuseteile ein Kern (4) befindet, welcher die Wandstärke des Auskleidungselementes (5) beim Gießvorgang vorgibt;nach dem An- oder Aushärten des Mineralgusses werden die Mantelgehäuseteile (1,2) voneinander getrennt;der von dem einteiligen Auskleidungselement (5) zumindest teilweise umschlossene Kern (4) wird zerstört und entfernt;die Mantellgehäuseteile (1,2) werden wieder zusammengefügt.
- Verfahren nach Anspruch 6, gekennzeichnet durch die folgenden Verfahrensschritte:wenigstens zwei an der Innenfläche mit dem Trennmittel (3) behandelte Mantelgehäuseteile (3) werden einzeln mit dem Mineralguß ausgegossen, wobei die Wandstärke der Auskleidungselemente (5) beim Gießvorgang jeweils durch einen Kern (4) vorgegeben wird;nach dem An- oder Aushärten des Mineralgusses wird der Kern (4) entnommen;die mit dem Mineralguß ausgekleideten Mantelgehäuseteile (1,2) werden zusammengefügt, wobei die Dichtflächen der Auskleidungselemente (5) abgedichtet werden.
- Verfahren nach Anspruch 8, dadurch gekennzeichnet, daß die durch die Mantelgehäuseteile (1,2) und den jeweiligen Kern (4) gebildete Gießform derart ausgebildet sind, daß die Auskleidungselemente (5) im Bereich der Dichtflächen einige Millimeter aus den Mantelgehäuseteilen (1,2) herausragen.
- Verfahren nach Anspruch 8, dadurch gekennzeichnet, daß die durch die Mantelgehäuseteile (1,2) und den jeweiligen Kern (4) gebildete Gießform derart ausgebildet sind, daß die Auskleidungselemente (5) im Bereich der Dichtflächen hinter den Verschraubungsbünden (10,11) der Mantelgehäuseteile (1,2) zurückliegen oder bündig abschließen.
- Kreiselpumpe mit wenigstens einem Laufrad und wenigstens einer das Laufrad aufnehmenden Laufradkammer (6), die zumindest teilweise mit Auskleidungselementen (5) aus Mineralguß ausgekleidet ist, wobei die Auskleidungselemente (5) von einem metallischen Mantelgehäuse umschlossen sind, das aus wenigstens zwei Mantelgehäuseteilen (1,2) besteht, in welche die Auskleidungselemente (5) vergossen sind,
dadurch gekennzeichnet, daβ zwischen den Außenflächen der Auskleidungselemente (5) und den Innenflächen der Mantelgehäuseteile (1,2) ein mit einem Trennmittel ausgefüllter Spalt (3) besteht.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/EP2002/010513 WO2004033919A1 (de) | 2002-09-19 | 2002-09-19 | Herstellung von mit mineralguss ausgekleideten maschinenteilen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1511939A1 EP1511939A1 (de) | 2005-03-09 |
| EP1511939B1 true EP1511939B1 (de) | 2005-11-30 |
Family
ID=32087921
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP02779376A Expired - Lifetime EP1511939B1 (de) | 2002-09-19 | 2002-09-19 | Herstellung von mit mineralguss ausgekleideten maschinenteilen |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US7329094B2 (de) |
| EP (1) | EP1511939B1 (de) |
| AT (1) | ATE311539T1 (de) |
| AU (1) | AU2002342716A1 (de) |
| DE (1) | DE50205144D1 (de) |
| WO (1) | WO2004033919A1 (de) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004039172C5 (de) * | 2004-08-12 | 2009-02-19 | Nomig Gmbh | Verfahren zur Herstellung von mit Mineralguß ausgekleideten Maschinenteilen und Verwendung des Verfahrens |
| EP1855012A1 (de) * | 2006-05-11 | 2007-11-14 | IHC Holland IE N.V. | Kreiselpumpe mit mit einem Innen- und Aussengehäuse |
| ATE452295T1 (de) * | 2006-09-19 | 2010-01-15 | Ihc Holland Ie Bv | Kreiselpumpe mit innen- und aussengehäuse |
| MX350021B (es) | 2008-06-13 | 2017-08-18 | Weir Minerals Australia Ltd | Pasador de acople de recubrimiento. |
| DE102012221442B3 (de) * | 2012-11-23 | 2014-02-27 | PME Pumpen- und Modelltechnik GmbH | Verfahren zur Herstellung einer Mineralgussauskleidung und damit ausgekleidetes Gehäuse einer Pumpe |
| DE102013004101B4 (de) | 2013-03-11 | 2014-12-24 | SICcast Mineralguß GmbH & Co. KG | Zusammensetzung, Verfahren zur Herstellung eines Verbundwerkstoffs, Verwendung der Zusammensetzung sowie Verbundwerkstoff |
| CN110732656B (zh) * | 2019-10-21 | 2021-06-29 | 大连船用柴油机有限公司 | 大型低速船用柴油机十字头滑块白合金浇铸方法和工装 |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3607600A (en) * | 1969-07-15 | 1971-09-21 | Hauck Mfg Co | Composite molding process and product |
| SE411571B (sv) * | 1978-06-16 | 1980-01-14 | Skega Ab | Slitfoder |
| DE4012041C2 (de) * | 1990-04-11 | 1996-06-13 | Duechting Pumpen Maschf Gmbh | Hochdruckkreiselpumpe |
| DE4343547C1 (de) | 1993-12-20 | 1994-11-17 | Duechting Pumpen Maschf Gmbh | Verfahren für die Herstellung von Maschinenbauteilen aus Mineralguß |
| US5513954A (en) | 1994-06-10 | 1996-05-07 | Envirotech Pumpsystems, Inc. | Multilayer pump liner |
| DE29723409U1 (de) | 1997-05-27 | 1998-09-10 | H. Wernert & Co. oHG, 45476 Mülheim | Kreiselpumpe für chemisch aggressive und/oder erosive oder abrasive Fördermedien |
-
2002
- 2002-09-19 EP EP02779376A patent/EP1511939B1/de not_active Expired - Lifetime
- 2002-09-19 AU AU2002342716A patent/AU2002342716A1/en not_active Abandoned
- 2002-09-19 DE DE50205144T patent/DE50205144D1/de not_active Expired - Lifetime
- 2002-09-19 WO PCT/EP2002/010513 patent/WO2004033919A1/de not_active Ceased
- 2002-09-19 AT AT02779376T patent/ATE311539T1/de not_active IP Right Cessation
- 2002-09-19 US US10/528,536 patent/US7329094B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| EP1511939A1 (de) | 2005-03-09 |
| WO2004033919A1 (de) | 2004-04-22 |
| AU2002342716A1 (en) | 2004-05-04 |
| US20050241793A1 (en) | 2005-11-03 |
| DE50205144D1 (de) | 2006-01-05 |
| US7329094B2 (en) | 2008-02-12 |
| ATE311539T1 (de) | 2005-12-15 |
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