电渣连铸锭表面质量的影响因素

渣皮的厚度、均匀性和力学性能是影响抽锭电渣钢锭表面质量的主要因素。薄而均匀渣皮是获得良好连铸锭表面质量的关键。文中分析了渣池电流密度分布、结晶器壁附近的热传导条件、渣成分和"高温区"温度变化等因素对渣皮厚度的影响。生产试验表明,通过控制操作温度和渣系成分获得薄而均匀的渣皮,并确保渣系具备长渣形式和适当的高温强度及塑性可得到良好表面质量的电渣连铸锭。

Effect Factors on Surface Quality of Electroslag Continuous Casting Ingot

Thickness, uniformity and mechanical properties of slag skin are main factors to influence the surface quality of continuous withdrawing electroslag remelting ( ESR) ingot. Thin and homogeneous slag skin is a kev to get ni(*e surface quality of ESR continuous casting ingot. The effect of current density distribution in slag bath, heat transferring conditions near mold wall, slag ingredient and factors to influence the change of temperature in "high-temperature region" on thickness of slag skin are analyzed in this paper. Production test results showed that thin and homogeneous slag skin with ensuring to satisfy long slag form and appropriate mechanical properties at high temperature was obtained by controlling operating temperature and slag ingredient in order to get nice surface quality of ESR continuous casting ingot.