Daye Special Steel Co., Ltd.

Zhanzhong Wang

Guanghui Liu

Zhou Zhang

Yinghua Lei

Lixin Zhou

Wenchao Zheng

Mengdi Hu

Ruihai Hu

Provided is steel for a wind power gear with improved purity and reliability. The chemical components thereof comprise, in percentages by mass: 0.15-0.19% of C, &#x2264;0.4% of Si, 0.5-0.7% of Mn, &#x2264;0.012% of P, &#x2264;0.006% of S, 1.5-1.8% of Cr, 0.28-0.35% of Mo, 1.4-1.7% of Ni, and 0.02-0.04% of Al, with the balance being Fe and inevitable impurities. A smelting method therefor comprises adding raw materials to a converter for primary melting, transferring same to a refining furnace for refining, carrying out continuous casting after vacuum degassing, and transferring same to a gas protection furnace for electroslag remelting. According to the present invention, a pure electroslag master batch is obtained by continuous casting, and the purity of the material is further improved by means of an electroslag remelting procedure; and the prepared steel material is used in a wind power gear, such that the flaw detection pass rate is significantly increased, large-particle inclusions in the steel material are significantly reduced, and the inclusions are fine and dispersed.

Steel for wind power gear with improved purity and reliability, and smelting method therefor

Growing community of inventors

Hubei, China

Zhanzhong Wang