高纯净GCr15轴承钢脆性夹杂物的控制

特殊钢 ›› 2008, Vol. 29 ›› Issue (5): 54-55.

高纯净GCr15轴承钢脆性夹杂物的控制

耿克，吴明，翁韶华，黄煌

江阴兴澄特种钢铁有限公司，江阴 214429

收稿日期:2008-04-03 出版日期:2008-10-01 发布日期:2023-01-09
作者简介:耿克(1967-)，男，硕士，高级工程师，东北大学毕业，从事特殊钢新材料、新工艺开发。

Control of Brittle Inclusions in High Cleanliness Bearing Steel GCr15

Geng Ke , Wu Ming , Weng Shaohua , Huang Huang

Jiangyin Xingcheng Special Steel Co Ltd ,Jiangyin 214429

Received:2008-04-03 Published:2008-10-01 Online:2023-01-09

摘要/Abstract

摘要： 分析了铁水+废钢-100 t EAF-LF(VD)-CC生产的高纯净GCr15轴承钢D类和B类夹杂物的组成,试验了精炼渣成分和VD吹氩搅拌对钢中脆性夹杂物含量的影响。结果表明,兴澄特钢GCr15钢中大尺寸D类夹杂组成为O-Al-Ca-S、O-Al-Mg-Ca-(S)和Ti-N-Cr;B类夹杂组成为O-Al-Ca、O-Al-Mg-Ca;采用(%)40～60CaO、20～40Al₂O₃、5～12MgO、4～10SiO₂精炼渣系,延长VD吹氩搅拌时间,控制耐火材料质量,使钢中总氧含量≤8×10^-6,可有效地控制钢中大颗粒脆性夹杂物,达到高纯净度技术要求。

关键词: 高纯净轴承钢, LF(VD)精炼, 脆性夹杂物

Abstract: The ingredients of D type and B type inclusions in high cleanliness bearing steel CCr15 produced by hot metal + scrap- 100t EAF-LF(VD)-CC flow sheet were analyzed and the effect of refining slag ingredient and VD argon stiring process on brittle inclusions in steel were tested. Results showed that in CCr15 steel produced at Xingcheng Special Steel, the ingredients of large scale D type inclusions were O-Al-Ca-S,O-Al-Mg-Ca-(S)and Ti-N-Cr and the ingredients of B type inclusions were O-Al-Ca and O-Al-Mg-Ca; it was available to control large scale inclusions in steel to meet the technical requirement for high cleanliness of steel by using 40~60CaO,20～40Al₂O₃,5～12MgO,4～10SiO₂refining slag series,prolonging VD argon stiring time,controlling refractory quality and total oxygen content in steel≤8×10^-6.

Key words: High Cleanliness Bearing Steel, LF(VD)Refining, Brittle Inclusions

耿克, 吴明, 翁韶华, 黄煌. 高纯净GCr15轴承钢脆性夹杂物的控制[J]. 特殊钢, 2008, 29(5): 54-55.

Geng Ke , Wu Ming , Weng Shaohua , Huang Huang. Control of Brittle Inclusions in High Cleanliness Bearing Steel GCr15[J]. Special Steel, 2008, 29(5): 54-55.