Die Cast Component and Method for Producing a die Cast Component

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This patent describes a specially designed die cast component made from a curable aluminum alloy with specific proportions of silicon and magnesium, as well as a precise method for producing such a component. The alloy composition and heat treatment process are engineered to provide a favorable combination of high strength, ductility, and excellent suitability for mechanical joining methods such as punch riveting. The invention addresses long-standing issues in making thin-walled, high-strength die-cast automotive structures that remain resistant to cracking during joining processes.

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

• Automotive body parts, especially structural components requiring joining by punch riveting or similar methods
• Lightweight yet strong chassis elements for vehicles
• Production of thin-walled aluminum castings for electric vehicles and other transportation sectors
• Manufacture of safety-critical components where high strength and ductility are required
• Applications in aerospace or machinery where robust and reliable joining of aluminum castings is needed
• Replacement of heavier or less formable components in vehicle design to improve fuel efficiency and crash performance

BenefitsContent extracted from patent full text and abstract with AI.

• Improved punch riveting suitability, reducing the risk of cracks during mechanical joining
• Enables production of strong and ductile thin-walled die cast parts, beneficial for lightweight construction
• High yield strength (>190 MPa) and good elongation at break (≥7%) balance both strength and ductility, meeting demanding safety standards
• Reproducible and adaptable manufacturing process due to optimized heat treatment steps
• Potentially broadens the use of die casting for structural automotive and similar components, allowing more design freedom and integration
• Reduces manufacturing defects and enhances reliability of critical cast parts, especially in automotive safety zones

Technical Classifications (CPCs)

Inventors & Applicants

Patent Abstract

The invention relates to a method for producing a die casting part and a die casting part produced with said method. According to the invention, an excellent punch-riveting suitability is achieved when the die casting part has a curable aluminium alloy with the following alloy constituents: 5.0 to 9.0 wt.-% silicon (Si), 0.25 to 0.5 wt.-% magnesium (Mg) and as the remainder aluminium and unavoidable impurities caused by production each with max. 0.05 wt.-% and in total at most 0.15 wt.-%, wherein the die casting part has a yield point (Rp0.2) of greater than 190 MPa and an elongation at break (A5) of greater than or equal to 7 %, and uniform strain (Ag) and necking strain (Az) meet the condition Az ≥ Ag/2.