Nichtorientiertes Elektrostahlblech mit Hervorragender Ermüdungsleistung und Herstellungsverfahren dafür

Details

Veröffentlichungs-Nr.

EP4715080

Anmeldetag

18. Juli 2024

Veröffentlichung

23. Januar 2025

Rechtsraum

EP

Abstract

The present disclosure relates to a non-oriented electrical steel sheet with excellent fatigue performance. In addition to Fe and inevitable impurities, the non-oriented electrical steel sheet further comprises the following chemical elements in mass percentage: 0 < C ≤ 0.0025%, Si: 3.10-3.80%, Mn: 0.14-0.95%, Al: 0.25-1.05%, Ca: 0.0003-0.01%. The number of MgO·Al₂O₃ spinel-type inclusions with a size of 1.5 µm or more in the non-oriented electrical steel sheet is not more than 7 counts/mm². The non-oriented electrical steel sheet has excellent fatigue performance, enabling the drive motor of a new-energy vehicle to undergo repeated startups and stable operation under complex operating conditions without deformation or fracture. Moreover, when the non-oriented electrical steel sheet is used as a stator material, it exhibits the characteristic of low iron loss at high frequencies after stress relief annealing.

Anmelder

Firma

BAOSHAN IRON & STEEL CO., LTD.

Land

🇨🇳 China