试验证明了《无压》浇注是一种较好的工艺制度,它是减少铸坯中的气体和夹杂物,提高铸坯质量扩大浇注品种的一项有效的技术措施;试验也证明了五孔和喇叭形伸入式水口是浇注方坯的两种好的水口形式,这两种水口对减小流股在结晶器内的穿透深度是十分有效的;试验同样证明了170×250毫米方坯中的夹杂物与《有压》浇注过程中保护渣的卷入有关。 The test proves that “no-pressure” pouring is a better process system, which is an effective technical measure to reduce the gas and inclusions in the slab and improve the slab quality and expand the pouring varieties. The experiment also proves that five holes And the flared spout are two good nozzle forms for billet casting, both of which are very effective in reducing the depth of penetration of the stream in the mold; the test also demonstrated a 170 x 250 mm square The inclusions in the billet are involved with the entrapment of mold flux during the “pressure” pouring.