It is important for eliminating viscous slag and cracks on billet surface to select the proper mould powder with proper physical chemical properties including little viscosity and low melting point and high smelting rate and optimize casting technological parameters and stabilize casting process .

而杜绝铸坯表面 粘 渣和裂纹除优化浇铸工艺参数、稳定浇铸过程外，选择粘度小、熔点低、熔速快等合适理化性能指标的保护渣至关重要。