连铸结晶器保护渣结晶性能的研究

特殊钢 ›› 2007, Vol. 28 ›› Issue (2): 34-35.

连铸结晶器保护渣结晶性能的研究

孙丽枫, 宋智芳,刘承军,姜茂发

东北大学材料与冶金学院，沈阳H0004

收稿日期:2006-10-16 出版日期:2007-04-01 发布日期:2023-03-09
作者简介:孙丽枫(1976-),女，博士研究生,2004年东北大学钢铁冶金专业毕业,冶金辅助材料系列化开发。
基金资助:
国家自然科学基金资助项目(50204005)

Study on Crystallization Performance of Mold Flux for Casting

Sun Lifeng, Song Zhifang, Liu Chengjun , Jiang Maofa

School of Materials and Metallurgy, Northeastern University, Shenyang 110004

Received:2006-10-16 Published:2007-04-01 Online:2023-03-09

摘要/Abstract

摘要： 实验研究了结晶器保护渣(％:37CaO、2MgO、40SiO₂、5Al₂O₃、5Na₂O、11CaF₂)在1 300-1 000℃的结晶过程和性能。结果表明,冷却速率≤2℃／s时,该渣的结晶化率达100％。在冷却速率0．1℃／s时,保护渣首先析出树枝状晶体,然后以片状晶体形态析出,直到结晶终止。通过X-射线衍射分析,得出析出的晶体主要有枪晶石(Ca₄Si₂O₇F₂)镁黄长石(Ca₂MgSi₂O₇)、硅灰石(CaSiO₃)及镁铝尖晶石(Al₂MgO₄)。

Abstract: Course and performance of crystallization of mold flux 37 CaO, 2MgO, 40SiO₂, 5Al₂O₃, 5Na₂O, 11CaF₂ at 1 300 ~ 1 000 °C have tested and studied. Results showed that as cooling rate was ≤2℃／s, crystallization ratio of the flux was 100% ； and as cooling rate was 0. 1 °C/s, dendritic crystal precipitated at first in flux, then lamellar crystal precipitated to last of crystallization. By X- ray analysis, crystal phases of flux consist of cuspidine Ca₄Si₂O₇F₂, akermanite Ca₂MgSi₂O₇, wollastonite CaSiO₃ and magnesia alumina spinel Al₂MgO₄.

孙丽枫, 宋智芳, 刘承军 , 姜茂发. 连铸结晶器保护渣结晶性能的研究[J]. 特殊钢, 2007, 28(2): 34-35.

Sun Lifeng, Song Zhifang, Liu Chengjun , Jiang Maofa. Study on Crystallization Performance of Mold Flux for Casting[J]. Special Steel, 2007, 28(2): 34-35.