Transactions of Nonferrous Metals Society of China The Chinese Journal of Nonferrous Metals

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中国有色金属学报

ZHONGGUO YOUSEJINSHU XUEBAO

第6卷    第3期    总第20期    1996年9月

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文章编号:(1996)03-29-4
石墨化率不同的自焙炭块的热膨胀
薛向欣1 黄晓煜2 段培宁1 张殿有2

(1.东北大学冶金系,沈阳110006;
2.鞍山钢铁公司炼铁厂,鞍山114021
)

摘 要: 采用精密垂直拉杆膨胀仪在14~1000℃范围内测量了具有不同石墨化率的自焙炭块的相对热伸长量,并由此获得了热线膨胀系数α。结果表明:石墨化率一定时,α值在较低温度下随温度升高而增加,在较高温度下,α值随温度变化不明显;恒温时,石墨化率越高,α值越低。讨论了单位热应力下的弹性模量概念。

 

关键字: 自焙炭块 石墨化率 热膨胀系数 拉杆式膨胀仪 弹性模量

THERMAL EXPANSIBILITY OF SELF-BAKING CARBON BLOCKS WITH DIFFERENT GRAPHITIZATION DEGREE
Xue Xiangxin1, Huang Xiaoyu2, Duan Peining1, Zhang Dianyou2

1.Department of Metallurgy, Northeastern University, Shenyang110006
2. Ironmaking Works, Anshan Iron and Steel Complex, Anshan 114021

Abstract:Relative thermal expansions,ΔL/L0,of self-baking carbon blocks with different graphitization degree were measured by using a precise vertical pull-rod dilatometer within temperature range of 14~1000℃, based on which the linear thermal expansion coefficients,α,of the carbon blocks were obtained. Results showed that the value ofαincreased with increasing temperature at a given graphitization degree; the higher the graphitization degree, the lower the value ofαat a given temperature. Thermal elastic moduli of the carbon blocks were discussed.

 

Key words: self-baking carbon block graphitization degree thermal expansion coefficient dilatometer modulus of elasticity

ISSN 1004-0609
CN 43-1238/TG
CODEN: ZYJXFK

ISSN 1003-6326
CN 43-1239/TG
CODEN: TNMCEW

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