Method for Combined Edge Layer Treatment of Components Made from Cast Iron Materials

Simple SummaryContent extracted from patent full text and abstract with AI.

This invention describes a process for the combined surface treatment of components made from cast iron materials. The method involves melting the surface layer of the part with an energy beam, maintaining it in a liquid state so that graphite dissolves, cooling it to form a hard, graphite-free structure, and then applying a thermochemical treatment like nitriding to create a highly durable surface layer.

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

• Manufacturing of highly wear-resistant automotive components such as camshafts, crankshafts, or cylinder liners.
• Production of durable machine parts for heavy-duty industrial equipment.
• Enhancement of tools and components in the construction and agricultural machinery sectors.
• Improvement of corrosion and wear resistance in pipe fittings and valves made from cast iron.

BenefitsContent extracted from patent full text and abstract with AI.

• Substantially increases the wear and hardness of cast iron components.
• Creates a strong, durable, and graphite-free surface resistant to mechanical and chemical stress.
• Enables the production of parts with improved surface properties without replacing the entire material.
• Offers flexibility to apply various surface treatments like nitriding for tailored functional requirements.

Technical Classifications (CPCs)

Inventors & Applicants

Patent Abstract

Die Erfindung betrifft ein Verfahren zur kombinierten Randschichtbehandlung von Bauteilen aus Gusseisenwerkstoffen mit folgenden Verfahrensschritten: – Randschichtumschmelzen einer Randschicht des Bauteiles durch einen Energiestrahl, – Aufrechterhalten einer flüssigen Phase in die Randschicht bis der Graphit in der Randschicht in der flüssigen Phase in Lösung gegangen ist, – Abkühlen der Randschicht und Umwandlung der flüssigen Phase in einen ledeburitischen harten und graphitfreien Gefügezustand und anschließende thermochemische Behandlung des mit einer umgeschmolzenen Randschicht versehenen Grundwerkstoffes zur Ausbildung einer Verbindungsschicht an der Oberfläche des Bauteiles, vorzugsweise einer Nitrier- oder Nitriercarburierschicht.