Matthies Druckguss
Download our image brochure now and have all the important information at your fingertips.
Image brochureMatthies Druckguss GmbH & Co. KG
Bredstedter Straße 29 - 31
24768 Rendsburg
Phone: +49 4331 71253
Mail: info@druckgiesser.com
Matthies Druckguss GmbH & Co. KG
Bredstedter Straße 29-31
24768 Rendsburg
Ein besonderer Mehrwert von Matthies Druckguss
Neun verschiedene Legierungen, bestehend aus dem Basiselementen Aluminium, Kupfer-Zink (Messing) und Zink stehen unseren Kunden zur Auswahl. Und das bereits ab einer Kleinstmenge von 500 Stück pro Serie. So können wir besonders flexibel auf Kundenwünsche eingehen, Gussteileigenschaften zielgenau erreichen und Vorstellungen wie auch Ansprüche voll und ganz erfüllen. Denn bei jedem Auftrag kommt es auf individuelle Eigenschaften der jeweiligen Druckgusslegierungen an, damit die Gussteilherstellung fehlerfrei umgesetzt und Kundenwünsche zuverlässig erfüllt werden können. Für das Druckgießverfahren ist es physikalisch gesehen wichtig, dass die Legierung unter normal herrschenden Betriebsbedingungen schmelzbar ist – und dann wiederum schnellstmöglich erstarrt. Denn es werden extrem kurze Zykluszeiten im möglichst kleinen Temperaturintervall erzielt. Bei der Entformung bzw. beim Auswerfen aus der Kavität muss die Legierung eine bestimmte Mindesthärte und Zugfestigkeit aufweisen, um nicht zu verbiegen oder sogar zu reißen. Dies wird durch die mechanischen Eigenschaften der jeweiligen Legierung bestimmt.
Je nach dem, ob das Gussteil möglicherweise besonders leicht sein, eine gewisse Leitfähigkeit besitzen, eine bestimmte Zugfestigkeit bei einer bestimmten Temperatur haben soll oder eine Mindestbruchdehnung gefordert ist, werden unterschiedliche Legierungen ausgewählt.
Versatility across the board.
Today, cast aluminium alloys are among the most versatile materials of all. This is because they have particularly good mouldability and good machinability with extremely low density. Aluminium casting alloys are true all-rounders and can be used in almost all manufacturing and machining processes thanks to their perfect properties.
Aluminium alloys have excellent casting properties and are therefore very well suited to the die casting process.
Aluminium-silicon alloys are used most frequently. Silicon is the most important component here alongside aluminium. For example, ladders, window frames, cans, housings, car body components or even tableware can be produced. The aluminium casting alloys are divided into different groups:
1. AlSi casting alloys
The two best-known representatives of this group are the eutectic or near-eutectic alloys AlSi12(Fe) and AlSi12Cu1(Fe). Another alloy in this group is the AlSi10Mg(Fe) alloy, which is easy to harden. This is particularly suitable for automotive or shipbuilding.
2. AlSiCu casting alloys
The AlSi9Cu3(Fe) alloy produces an equally strong casting. It is the standard alloy in die casting if no special properties are required.
3 AlMg casting alloys
In addition to the first two groups of aluminium casting alloys, whose most important secondary component is silicon, there is another important group.
The alloy AlMg9, for example, has very good corrosion resistance with slightly increased strength values. It is decorative on the surface, surface-finishable and hardenable.
Aluminium alloys in HPDC have excellent polishability and good strength values, but are only weldable to a limited extent.
A versatile choice for precise and thin-walled castings in the HPDC process.
Alongside aluminium alloys, the fine zinc casting alloy is the most frequently used alloy in the HPDC process. The advantage of this material is the combination of particularly valuable properties. The material has excellent strength and is also very easy to cast and mould. The surface hardness of fine zinc casting alloys is somewhat lower than that of standardised casting alloys containing copper or aluminium.
Fine zinc alloys are very thin and therefore allow the production of particularly delicate and thin-walled castings. The group of zinc-aluminium casting alloys with an aluminium content of approx. 4 % is most commonly used here. Two fine zinc alloys have become established in HPDC: ZnAl4 and ZnAl4Cu1. Castings made from these alloys have the advantage that they are extremely easy to polish and can be electroplated.
Die-cast parts made from zinc alloys are particularly delicate and can be produced with thin walls. They are very suitable for coatings and overlays in decorative areas. Furthermore, the castings can be processed up to high-gloss chrome plating. Due to these properties, the fine zinc casting alloy is used in both decorative casting and functional casting. In the functional area, the alloy is mainly used when the casting does not have to meet above-average strength requirements and does not have to be optimised with regard to forming.
Zinc casting alloys are used, for example, in the production of lamp housings, fittings in the sanitary sector or even housings for notebooks and tablet PCs, but above all for small parts in vehicle, machine or apparatus construction that require particularly high precision.
Brass alloys can easily be used in the HPDC process and show their advantages there.
When the term high-pressure die casting is used, it is usually synonymous with HPDC components made from alloys with the base elements aluminium and zinc. Other alloys made from the base elements magnesium, tin and copper are ignored. This usually leads to astonishment about the suitability of brass alloys in the die casting process. And quite wrongly so.
It should not be forgotten that copper or brass is one of the oldest materials used in the history of mankind.
In order to be suitable for the HPDC process, the alloys must have good physical and mechanical properties so that they can be cast at the high speeds prevailing in die-cast, solidify under high pressure in the meantime and then be easily demoulded. Brass alloys (copper-zinc casting alloys) are always used in the HPDC process when cast parts with high strength and/or good corrosion resistance are required.
Only the group of copper-zinc alloys are of importance in HPDC.
Two brass alloys in particular have become established:
Brass alloy CuZn39Pb1Al-C-GP
Special brass alloy CuZn16Si4-C-GP
Structurally demanding components with thin wall thicknesses can be cast without any problems, eliminating the need for time-consuming and cost-intensive reworking. Strengths of 350 N/mm² to 500 N/mm² for brass or special brass also enable substitution with common standard steel grades, such as S235JR.
For use in sanitary areas or areas where water flows through, excellent durability is achieved thanks to the good resistance to corrosion - without additional surface finishing processes. The special brass alloy is also extremely resistant to dezincification and is suitable for use in offshore applications thanks to its resistance to seawater. Brass alloys allow the production of cast parts with high strength and good corrosion resistance at the same time.
Your Message could not be sent.