Surface heating element with controlled oxide layer and manufacturing process for it
Patent Information
- Application Number
- DE602020049432
- Authority / Receiving Office
- DE · DE
- Patent Type
- Patents
- Current Assignee / Owner
- Priority Date
- 2019-06-12
- Filing Date
- 2020-06-12
- Publication Date
- 2025-04-16
- Estimated Expiration
- 2040-06-12
AI Technical Summary
Existing surface type heating elements for cooktops face challenges such as material elution at high temperatures, low operation temperatures due to low melting points, and issues with fracture toughness, coefficient of thermal expansion, and adhesive strength, which affect reliability and lifetime.
A surface type heating element using a NiCr alloy with controlled oxygen content (1-4 wt%) and a photonic sintering method, which improves fracture toughness, reduces thermal shock, and enhances adhesive strength and electrical resistivity.
The solution allows for stable operation at high temperatures (400 °C or more), reduces material elution, and improves the reliability and lifetime of cooktops by ensuring high fracture toughness, low thermal expansion, and strong adhesion.