DE1048677B - Process for applying an aluminum or aluminum oxide coating to an iron alloy - for example cast iron - existing and to be cast around with light metal in the die casting process Em position pieces - Google Patents
Process for applying an aluminum or aluminum oxide coating to an iron alloy - for example cast iron - existing and to be cast around with light metal in the die casting process Em position piecesInfo
- Publication number
- DE1048677B DE1048677B DENDAT1048677D DE1048677DA DE1048677B DE 1048677 B DE1048677 B DE 1048677B DE NDAT1048677 D DENDAT1048677 D DE NDAT1048677D DE 1048677D A DE1048677D A DE 1048677DA DE 1048677 B DE1048677 B DE 1048677B
- Authority
- DE
- Germany
- Prior art keywords
- aluminum
- iron
- applying
- existing
- light metal
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims description 15
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims description 10
- 229910052782 aluminium Inorganic materials 0.000 title claims description 8
- 229910052751 metal Inorganic materials 0.000 title claims description 7
- 239000002184 metal Substances 0.000 title claims description 7
- 229910001018 Cast iron Inorganic materials 0.000 title claims description 4
- 229910000640 Fe alloy Inorganic materials 0.000 title claims description 4
- 238000004512 die casting Methods 0.000 title claims description 4
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 title claims description 4
- 239000011248 coating agent Substances 0.000 title claims description 3
- 238000000576 coating method Methods 0.000 title claims description 3
- 238000005266 casting Methods 0.000 claims description 7
- PMVSDNDAUGGCCE-TYYBGVCCSA-L Ferrous fumarate Chemical compound [Fe+2].[O-]C(=O)\C=C\C([O-])=O PMVSDNDAUGGCCE-TYYBGVCCSA-L 0.000 claims 1
- 238000005516 engineering process Methods 0.000 claims 1
- 238000001746 injection moulding Methods 0.000 claims 1
- 239000000155 melt Substances 0.000 description 4
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- CSDREXVUYHZDNP-UHFFFAOYSA-N alumanylidynesilicon Chemical compound [Al].[Si] CSDREXVUYHZDNP-UHFFFAOYSA-N 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012943 hotmelt Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C10/00—Solid state diffusion of only metal elements or silicon into metallic material surfaces
- C23C10/28—Solid state diffusion of only metal elements or silicon into metallic material surfaces using solids, e.g. powders, pastes
- C23C10/34—Embedding in a powder mixture, i.e. pack cementation
- C23C10/36—Embedding in a powder mixture, i.e. pack cementation only one element being diffused
- C23C10/48—Aluminising
- C23C10/50—Aluminising of ferrous surfaces
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Description
BUNDESREPUBLIK DEUTSCHLANDFEDERAL REPUBLIC OF GERMANY
DEUTSCHESGERMAN
kl. 31 c 26/02kl. 31 c 26/02
INTERNAT. KL. B 22 dINTERNAT. KL. B 22 d
PATENTAMTPATENT OFFICE
AUSLEGESCHRIFT 1048 677EXPLAINING PUBLICATION 1048 677
M 27386 VI/31 cM 27386 VI / 31 c
ANMELDETAG: 13. JUNI 1955REGISTRATION DATE: JUNE 13, 1955
BEKANNTMACHUNG
DERANMELDUNG
UND AUSGABE DER
AUSLEGESCHRIFT: 15. J A N U A R 1 9 5 9NOTICE
LOGIN
AND ISSUE OF THE
EXPLORATION PAPER: 15 JANUARY 1 9 5 9
Die Erfindung betrifft ein Verfahren zum Aufbringen eines Aluminium- bzw. Aluminiumoxydüberzuges auf aus einer Eisenlegierung — z. B. Gußeisen — bestehende und mit Leichtmetall im Druckgießverfahren zu umgießende Einlagestücke.The invention relates to a method for applying an aluminum or aluminum oxide coating on made of an iron alloy - z. B. Cast iron - existing and with light metal in the die casting process inserts to be cast around.
Nach einem bekannten Verfahren werden die Einlagestücke zunächst in eine etwa 850 bis 880° C heiße Aluminiumschmelze und anschließend in eine 560 bis 630° C heiße Schmelze einer mit Silicium versetzten Aluminiumlegierung getaucht, um sie dann in warmem Zustand in eine Sandform oder Kokille zum Umgießen mit Aluminium einzulegen.According to a known method, the inserts are first heated to about 850 to 880 ° C Aluminum melt and then in a 560 to 630 ° C hot melt one mixed with silicon Aluminum alloy is dipped in a warm state in a sand mold or permanent mold for casting inlay with aluminum.
Um gewisse Nachteile dieses Verfahrens zu vermeiden, werden nach einem anderen bekannten Verfahren die Metallteile in eine Aluminiumschmelze mit einer Anfangstemperatur von etwa 900 bis 850° C getaucht und die Schmelze alsbald durch Unterbrechung oder Drosselung ihrer Beheizung bis nahe über ihren Erstarrungspunkt abgekühlt und auf dieser Temperatur gehalten, worauf dann die eingetauchten Metallteile im Arbeitstakt der Gießvorgänige aus der Schmelze herausgenommen, in die Gießformen eingelegt und umgössen werden. Hierbei kann für die Schmelze Reinaluminium oder aber eine hochprozentige Aluminiumlegierung verwendet werden.In order to avoid certain disadvantages of this method, another known method is used the metal parts are immersed in a molten aluminum with an initial temperature of around 900 to 850 ° C and the melt immediately by interrupting or throttling its heating up to almost its solidification point cooled and kept at this temperature, whereupon the immersed metal parts in the work cycle of the casting process removed from the melt, placed in the molds and be cast around. Here, pure aluminum or a high-percentage aluminum alloy can be used for the melt be used.
Dieses Verfahren erfordert nicht nur eine ständige Überwachung der Schmelze, sondern auch, daß die Vorbehandlung der Metallteile immer im Arbeitstakt der Gießvorgänige erfolgen muß, so daß sich bei etwaigen unvorhergesehenen Betriebsunterbrechungen Schwierigkeiten ergeben können.This process not only requires constant monitoring of the melt, but also that the Pretreatment of the metal parts must always take place in the work cycle of the casting process, so that with any unforeseen business interruptions could cause difficulties.
Gegenüber den bekannten Verfahren kennzeichnet sich das erfindungsgemäße Verfahren dadurch, daß die Einlagestücke vor dem Einsetzen in die Gießform innerhalb eines luftdicht abgeschlossenen Kastens in Reinaluminiumpulver mindestens etwa 1 Stunde lang auf einer Temperatur von 800 bis 1000° C gehalten werden.Compared to the known method, the method according to the invention is characterized in that the Insert pieces in an airtight box before being inserted into the casting mold Maintained pure aluminum powder at a temperature of 800 to 1000 ° C for at least about 1 hour will.
Als. besonders vorteilhaft hat sich bei dem erfindungssgemäßen Verfahren erwiesen, daß Einlagestücke bei Raumtemperatur in die Gießform, also unabhängig vom Gießvorgang, eingelegt werden können. Gleichzeitig wird außerdem erreicht, daß die. Einlagestücke entspannt sind, so daß, wenn in ihnen beim Betrieb höhere Temperaturen entstehen, maßliche Änderungen auf ein Mindestmaß beschränkt werden und Spannungen nicht mehr auftreten.As. has proven particularly advantageous in the case of the invention Process proved that inserts at room temperature in the mold, so independently from the casting process, can be inserted. At the same time it is also achieved that the. Inserts are relaxed, so that if higher temperatures arise in them during operation, dimensional Changes are kept to a minimum and tension no longer occurs.
Verfahren zum Aufbringen einesMethod of applying a
Aluminium- bzw. Aluminiumoxyd-Aluminum or aluminum oxide
überzuges auf aus einer EisenlegierungPlating on an iron alloy
— z. B. Gußeisen — bestehende und mit- e.g. B. cast iron - existing and with
Leichtmetall im DruckgießverfahrenLight metal in die casting process
zu umgießende Einlagestückeinserts to be cast around
Anmelder:Applicant:
Mahle-WerkMahle factory
Gesellschaft mit beschränkter Haftung,
Fellbach (Württ), Schaflandstr. 3/8Company with limited liability,
Fellbach (Württ), Schaflandstr. 3/8
Gustav Lieby, Fellbach (Württ.),
ist als Erfinder genannt wordenGustav Lieby, Fellbach (Württ.),
has been named as the inventor
Um bei größeren Einlagestücken die Schrumpfkräfte auf ein erträgliches Maß zu begrenzen und die Materialverbindung noch zu verbessern, ist es auch möglich, die einzugießenden Einlagestücke entsprechend ihrer Materialstärke vor dem Einlegen in die Gießform anzuwärmen.In order to limit the shrinkage forces to a tolerable level with larger inserts and the To improve the material connection, it is also possible to cast the insert pieces accordingly to warm their material thickness before inserting it into the casting mold.
Claims (1)
Deutsche Patentschrift Nr. 863 888;
L. Frommer, Handbuch der Spritzgußtechnik,
1933.Considered publications:
German Patent No. 863,888;
L. Frommer, Handbook of Injection Molding Technology,
1933.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE1048677B true DE1048677B (en) | 1959-01-15 |
Family
ID=589814
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT1048677D Pending DE1048677B (en) | Process for applying an aluminum or aluminum oxide coating to an iron alloy - for example cast iron - existing and to be cast around with light metal in the die casting process Em position pieces |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE1048677B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2701273A1 (en) * | 1993-02-05 | 1994-08-12 | Daussan & Co | Process for producing a protective coating on iron-based tools intended to be placed in contact with a molten ferrous metal or alloy, coating thus obtained and tool comprising such a coating |
| DE19537847A1 (en) * | 1995-10-11 | 1997-04-17 | Mahle Gmbh | Reinforcement part, the base material of which is austenitic cast iron |
-
0
- DE DENDAT1048677D patent/DE1048677B/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2701273A1 (en) * | 1993-02-05 | 1994-08-12 | Daussan & Co | Process for producing a protective coating on iron-based tools intended to be placed in contact with a molten ferrous metal or alloy, coating thus obtained and tool comprising such a coating |
| DE19537847A1 (en) * | 1995-10-11 | 1997-04-17 | Mahle Gmbh | Reinforcement part, the base material of which is austenitic cast iron |
| US6112802A (en) * | 1995-10-11 | 2000-09-05 | Mahle Gmbh | Process for producing an intermetallic join |
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