CH148824A - Process for the production of chill moldings and injection molded parts. - Google Patents
Process for the production of chill moldings and injection molded parts.Info
- Publication number
- CH148824A CH148824A CH148824DA CH148824A CH 148824 A CH148824 A CH 148824A CH 148824D A CH148824D A CH 148824DA CH 148824 A CH148824 A CH 148824A
- Authority
- CH
- Switzerland
- Prior art keywords
- silicon
- copper
- addition
- zinc alloys
- sub
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/06—Sliding surface mainly made of metal
- F16C33/12—Structural composition; Use of special materials or surface treatments, e.g. for rust-proofing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/06—Sliding surface mainly made of metal
- F16C33/12—Structural composition; Use of special materials or surface treatments, e.g. for rust-proofing
- F16C33/121—Use of special materials
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2204/00—Metallic materials; Alloys
- F16C2204/10—Alloys based on copper
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2204/00—Metallic materials; Alloys
- F16C2204/10—Alloys based on copper
- F16C2204/14—Alloys based on copper with zinc as the next major constituent
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2220/00—Shaping
- F16C2220/02—Shaping by casting
Description
Verfahren zur Herstellung -von liokillenguss- und Spritzgassteilen. Gegenstand der Erfindung bildet ein Ver fahren zur Herstellung von Kokillenguss- und Spritzgussteilen unter Verwendung einer siliziumhaltigen Legierung.
Die Herstellung von Kokillenguss- und Spritzgussteilen wird bisher nur vereinzelt betrieben. Verwendet werden vorzugsweise die bekannten Kupfer-Zinklegierungen, Sondermessinge mit Aluminiumgehalt und Aluminiumbronzen, und zwar empfiehlt man für Kc>killeno-uss in erster Linie Aluminium- brenzen, während für Spritzgussteile haupt sächlich Messinge mit verhältnismässig hohem Zinkgehalt in Frage kommen.
Die Nachteile der Aluminiuinbronzen für die Herstellung von Kokillengussteilen sind vor allen Dingen die Bildung von Aluminiumoxydhäuten, die das Gussstück unansehnlich und in vielen Fällen unbrauchbar machen; ausserdem ist die starke Schwindung in Aluminiumbronzen von Nachteil. Es ist deshalb schwierig, in Aluminiumbronzen solche Teile in Dauer- formen herzustellen, welche Aussparungen und Hohlräume besitzen. Wegen der erwähn ten grossen Schwindung verse-liweissen die Kerne leicht mit dem umgossenen Metall, so dass sie häufig kaum oder überhaupt nicht zu ziehen sind.
Die Legierung muss dann aus der Form ausgeschmolzen werden, wo durch diese stark gefährdet wird.
Das für die Herstellung von Spritzguss- teilen verwendete Messing besitzt nur geringe Festigkeit und zeigt auch wegen der Zink- dampfentwicklung keine glatten Oberflächen. Ausserdem ist es nicht möglich, aus Messing solche Teile zu spritzen, welche einer -Rei bungsbeanspruchung unterliegen, wie Zahn räder, Kurvenscheiben, Lagerbüchsen usw.. da das Messing nicht die für diese Teile ge forderten Eicenschaften besitzt.
Für Kokillenguss- und Spritzgussteile gleich gut geeignet sind dagegen silizium- lialtige Kupferlegierungen. Es hat sich näm- lieh herausgestellt, dass das Silizium in zwei- faeller Hinsicht von günstigem Einfluss ist.
Zunächst begünstigt es in bekannter Weise die mechanischen Werte der Kupferleo.;ierun- gen und gibt weiter den Gussstücken infolge der Bildung einer Siliziumdioxydhaut eine <U>vollkommen</U> glatte Oberfläche, wie sie bei keiner der bisher für diesen Zweck gebräuch- liehen Legierungen erreicht worden ist.
Das Silizium wirkt ausserdem als gutes Desoxy- dationsmittel, sorgt also für einen sehlacken- freien Guss und hat einen günstigen Einfluss auf die Oberfläe-henbeschaffenheit. An Stelle der reinen Kupfer-Siliziumlegierungen wer den vorteilhaft solche mit einem Zin'kgehaIt von 0,2 bis 218% verwendet, die besonders günstige Festigkeitseigenschaften besitzen.
Handelt es sich zum Beispiel da-rum, Legie rungen zur Verwendung als Lagermetall her zustellen, so gibt man den Kupfer-Silizium- Zinklegierungen noch geringe Zusätze an derer Metalle von nicht über 2<B>%.</B> Derartice Metalle sind: Blei, Antimon, Wismut, Cad mium, Zinn, Nickel, Kobalt, Mangan, Eisen, Chrom, Aluminium, Titan, Wolfram, Molyb- dän, Zirkon.
Von den hier aufgeführten Metallen haben Blei, Antimon, Wismut, Cadmium, Zinn die Aufgabe, die Gleiteigensohaften der Kupfer- Silizium-Zinklegierungen zu erhöhen, wäh rend durch die übrigen Zusätze die Festig keit der Legierung vermehrt wird. Besonders -wirksam sind die Zusätze bei solchen Kupfer- Silizium-Zinklegierungen, bei denen der Si- liziumgehalt nicht den höchst zulässigen Prozentsatz erreicht.
Process for the production of liquid cast and injection molded parts. The subject matter of the invention is a process for the production of chill castings and injection molded parts using a silicon-containing alloy.
The production of chill castings and injection molded parts has so far only been carried out occasionally. The well-known copper-zinc alloys, special brasses with aluminum content and aluminum bronzes are preferably used. For Kc> killeno-uss, aluminum pyrenes are primarily recommended, while brass with a relatively high zinc content is mainly used for injection molded parts.
The disadvantages of aluminum bronzes for the production of permanent mold castings are above all the formation of aluminum oxide skins, which make the casting unsightly and in many cases unusable; in addition, the strong shrinkage in aluminum bronzes is a disadvantage. It is therefore difficult to manufacture parts in permanent molds in aluminum bronzes which have recesses and cavities. Because of the large shrinkage mentioned above, the cores easily become white with the encapsulated metal, so that they can often hardly be pulled or not at all.
The alloy must then be melted out of the mold, where it is severely endangered.
The brass used for the manufacture of injection molded parts has only low strength and, due to the development of zinc vapor, does not show any smooth surfaces. In addition, it is not possible to spray brass parts that are subject to friction stress, such as gears, cams, bearing bushes, etc. because the brass does not have the properties required for these parts.
On the other hand, silicon-based copper alloys are equally suitable for chill castings and injection-molded parts. This is because it has been found that silicon has a beneficial influence in two respects.
First of all, it favors the mechanical values of the copper alloy in a known manner and, as a result of the formation of a silicon dioxide skin, also gives the castings a <U> completely </U> smooth surface, which has not been used in any of the previously used for this purpose Alloys has been achieved.
The silicon also acts as a good deoxygenation agent, thus ensuring a varnish-free cast and has a beneficial influence on the surface properties. Instead of the pure copper-silicon alloys, those with a Zin'kgehaIt of 0.2 to 218% that have particularly favorable strength properties are advantageously used.
If, for example, it is a question of producing alloys for use as bearing metal, the copper-silicon-zinc alloys are still added small amounts of metals of not more than 2%. Other metals are: Lead, antimony, bismuth, cadmium, tin, nickel, cobalt, manganese, iron, chromium, aluminum, titanium, tungsten, molybdenum, zirconium.
Of the metals listed here, lead, antimony, bismuth, cadmium and tin have the task of increasing the sliding properties of the copper-silicon-zinc alloys, while the other additives increase the strength of the alloy. The additives are particularly effective in those copper-silicon-zinc alloys in which the silicon content does not reach the highest permissible percentage.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE148824X | 1930-03-31 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH148824A true CH148824A (en) | 1931-08-15 |
Family
ID=5672960
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH148824D CH148824A (en) | 1930-03-31 | 1930-07-02 | Process for the production of chill moldings and injection molded parts. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH148824A (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE764372C (en) * | 1940-04-07 | 1952-09-29 | Eugen Dr Vaders | Copper-zinc alloy |
DE934194C (en) * | 1952-05-10 | 1955-10-13 | Friedrich Wilh Heym Waffenfabr | Use of a material for the production of Baskuelen by means of injection molding |
DE1180950B (en) * | 1954-01-23 | 1964-11-05 | Dr Eugen Vaders | Use of a copper alloy for the production of mold and die-cast parts |
EP1045041A1 (en) * | 1998-10-12 | 2000-10-18 | Sambo Copper Alloy Co., Ltd | Leadless free-cutting copper alloy |
US7056396B2 (en) | 1998-10-09 | 2006-06-06 | Sambo Copper Alloy Co., Ltd. | Copper/zinc alloys having low levels of lead and good machinability |
JP2009007657A (en) * | 2007-06-29 | 2009-01-15 | Joetsu Bronz1 Corp | Lead-free free-cutting copper alloy, and lead-free free-cutting copper alloy for continuous casting |
US7883589B2 (en) | 2005-09-22 | 2011-02-08 | Mitsubishi Shindoh Co., Ltd. | Free-cutting copper alloy containing very low lead |
US8506730B2 (en) | 1998-10-09 | 2013-08-13 | Mitsubishi Shindoh Co., Ltd. | Copper/zinc alloys having low levels of lead and good machinability |
-
1930
- 1930-07-02 CH CH148824D patent/CH148824A/en unknown
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE764372C (en) * | 1940-04-07 | 1952-09-29 | Eugen Dr Vaders | Copper-zinc alloy |
DE934194C (en) * | 1952-05-10 | 1955-10-13 | Friedrich Wilh Heym Waffenfabr | Use of a material for the production of Baskuelen by means of injection molding |
DE1180950B (en) * | 1954-01-23 | 1964-11-05 | Dr Eugen Vaders | Use of a copper alloy for the production of mold and die-cast parts |
US8506730B2 (en) | 1998-10-09 | 2013-08-13 | Mitsubishi Shindoh Co., Ltd. | Copper/zinc alloys having low levels of lead and good machinability |
US7056396B2 (en) | 1998-10-09 | 2006-06-06 | Sambo Copper Alloy Co., Ltd. | Copper/zinc alloys having low levels of lead and good machinability |
EP1600516A2 (en) * | 1998-10-12 | 2005-11-30 | Sambo Copper Alloy Co., Ltd | Lead-free, free-cutting copper alloys |
EP1559802A1 (en) * | 1998-10-12 | 2005-08-03 | Sambo Copper Alloy Co., Ltd | Lead-free, free-cutting copper alloys |
EP1600517A2 (en) * | 1998-10-12 | 2005-11-30 | Sambo Copper Alloy Co., Ltd | Lead-free, free-cutting copper alloys |
EP1600516A3 (en) * | 1998-10-12 | 2005-12-14 | Sambo Copper Alloy Co., Ltd | Lead-free, free-cutting copper alloys |
EP1600517A3 (en) * | 1998-10-12 | 2005-12-14 | Sambo Copper Alloy Co., Ltd | Lead-free, free-cutting copper alloys |
EP1045041A4 (en) * | 1998-10-12 | 2003-05-07 | Sambo Copper Alloy Co Ltd | Leadless free-cutting copper alloy |
EP1045041A1 (en) * | 1998-10-12 | 2000-10-18 | Sambo Copper Alloy Co., Ltd | Leadless free-cutting copper alloy |
US7883589B2 (en) | 2005-09-22 | 2011-02-08 | Mitsubishi Shindoh Co., Ltd. | Free-cutting copper alloy containing very low lead |
JP2009007657A (en) * | 2007-06-29 | 2009-01-15 | Joetsu Bronz1 Corp | Lead-free free-cutting copper alloy, and lead-free free-cutting copper alloy for continuous casting |
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