Tool for Use in Aluminum Casting

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The invention relates to a tool for use in aluminum casting, consisting of a special steel whose phases transform during cooling to improve properties. The tool's surface is coated with a crystalline diamond layer, produced by chemical vapor deposition (CVD), over an intermediate layer made from a nitride or carbide of a refractory metal or from silicon. This combination enhances the tool's performance in aluminum casting processes.

Use CasesContent extracted from patent full text and abstract with AI.

• Molds or dies used in aluminum casting foundries
• Casting tools requiring high wear resistance
• Tools and tooling for mass production of aluminum parts in the automotive or aerospace industries
• Metalworking tools that demand robust and durable surfaces
• Applications involving frequent casting cycles with molten aluminum

BenefitsContent extracted from patent full text and abstract with AI.

• Greatly improved wear resistance due to the diamond surface coating
• Extended tool lifespan and reduced need for frequent replacement
• Enhanced surface hardness and thermal stability
• Lower maintenance costs and downtime for casting operations
• Protection against chemical attack from molten aluminum, reducing corrosion and alloying effects

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Patent Abstract

Die Erfindung betrifft ein Werkzeug zum Einsatz beim Aluminiumguss, welches aus einem Stahl hergestellt ist, bei dem sich beim Abkühlen eine γ-Fe-Phase in zumindest eine der folgenden Phasen umwandelt: α-Fe-Phase, Carbidphase, Bainit, Martensit, wobei eine mittels CVD-Verfahren hergestellte kristalline Diamantschicht auf einer auf der Oberfläche des Stahls gebildeten Zwischenschicht aufgebracht ist, welche aus einem Nitrid oder Carbid eines Refraktärmetalls oder aus Silizium gebildet ist.