ISSN:1003-8620

CN:42-1243/TF

主管:中信泰富特钢集团股份有限公司

主办:大冶特殊钢有限公司

特殊钢 ›› 2014, Vol. 35 ›› Issue (2): 30-32.

• 工艺技术 • 上一篇    下一篇

11 t铸锭帽口绝热板和保护渣对H13钢成坯率的影响

宋书雅1,赵俊学1,杨 薇1,仇圣桃2,李小明1   

  1. 1. 西安建筑科技大学冶金工程学院,西安 710055 ;
    2. 钢铁研究总院国家连铸中心,北京 100081;
  • 收稿日期:2013-09-05 出版日期:2014-04-01 发布日期:2022-09-08
  • 作者简介:宋书雅(1989-),女,硕士研究生(西安建筑科技大学),炼钢工艺及钢材质量控制研究。

Influence of 11 t Ingot Hot Top Insulating Board and Shield Flux on Billet Yield of Steel H13

Song Shuya1  , Zhao Junxue1  , Yang Wei1  , Qiu Shengtao2 , Li Xiaoming1   

  1. 1.School of Metallurgical Engineering, Xi'an University of Architecture and Technology, Xi'an 710055 ;
    2.National Engineering Research Center of Continuous Casting Technology, Central Iron and Steel Research Institute, Beijing 100081;
  • Received:2013-09-05 Published:2014-04-01 Online:2022-09-08

摘要: 针对钢厂热作模具钢H13成坯率低的冶金质量问题,对影响成坯率的相关质量进行了统计分析,得出因帽口保温性能差所造成的疏松缺陷占不合格钢锭总量的58%~76%。通过将SiO2绝热板的体积密度和导热率分别由1.65 g/cm3和0.317 W/(m·K)降至0.87 g/cm3和0.21 W/(m·K),优化低碳复合保护渣的组成,使其熔点和粘度分别由原来的1258℃和1.8 Pa·s降至1147℃和0.9 Pa·s,使钢锭平均成坯率由原来的75%提高至80%。

关键词: H13热作模具钢, 铸锭帽口, 绝热板, 保护渣, 成坯率

Abstract: According to metallurgical quality issue about low billet yield of hot working die steel H13 at steel works, the statistic analysis on relative quality to influence on billet yield has been carried out to get that the porosity defects caused by poor insulation of hot top make up 58%-76% of the total non-qualified ingot. With decreasing the volume density and heat conductivity of SiO2 insulating board respectively from original 1.65 g/cm3 and 0.317 W/(m • K) to 0.87 g/cm3 and 0.21 W/( m • K) , and optimizing the ingredient of low carbon shield synthetic flux to decrease its melting point and viscosity respectively from original 1258 °C and 1.8 Pa • s to 1147 °C and 0.9 Pa • s, the average billet yield of ingot increases from original 75% to 80% .

Key words: Hot Working Die Steel H13, Ingot Hot Top, Insolating Board, Shielding Flux, Billet Yield