Walzdraht, Stahldraht und Verfahren zur Herstellung davon

Details

Veröffentlichungs-Nr.

EP4800140

Anmeldetag

13. November 2024

Veröffentlichung

19. Juni 2025

Rechtsraum

EP

Abstract

A wire rod according to an example of the present disclosure comprises, in percent by weight (wt%)in percent by weight (wt%): C: 0.94% to 1.04%, Si: 0.9% to 1.5%, Mn: 0.2% to 0.8%, Cr: 0.2% to 0.8%, Al: 0.020% to 0.105%, N: 0.0021% to 0.0205%, Al/N: 2.00 to 11.00, the balance of Fe and other unavoidable impurities.A manufacturing method of a wire rod according to another example of the present disclosure comprises: preparing a billet comprising, in percent by weight (wt%): C: 0.94% to 1.04%, Si: 0.9% to 1.5%, Mn: 0.2% to 0.8%, Cr: 0.2% to 0.8%, Al: 0.021% to 0.102%, N: 0.0021% to 0.0205%, Al/N: 2.00 to 11.00, and the balance of Fe and other unavoidable impurities; reheating and hot-rolling the billet; coiling at Acm-80°C to 760°C; cooling from the coiling temperature to 650°C to 620°C, which is a pearlite transformation entry temperature, at 10°C/s to 20°C/s; and maintaining for 200 seconds or more by setting a conveyor speed to 0.30 m/s or less from the cooling temperature to a temperature range of 600°C to 560°C.

Anmelder

Firma

POSCO Co., Ltd

Land

🇰🇷 Südkorea