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改善钢的纯净度的方法之一是防止钢的再氧化。在连铸和模铸过程中,金属铸流与大气接触时,或在铸流表面、或将空气带入铸流中而发生再氧化。由于再氧化生成物是典型的迅凝物质,所以在连铸操作中仍需要加以捕捉,否则,这种夹杂将给钢的切削加工、表面质量及其他机械性能带来严重影响。钢中非金属夹杂的来源很多,其中40％是大罐内高温钢液与空气直接接触而再次氧化的结果。有报告说,大罐与中间包之间,钢流中的大颗粒夹杂因受大气的再氧化而增加了2.5倍;中间包与结晶器之间,钢流中的大颗粒夹杂因水口受侵蚀而增加了3.6倍。因
One way to improve the purity of the steel is to prevent reoxidation of the steel. During continuous casting and die casting, re-oxidation takes place when the metal strand is brought into contact with the atmosphere or on the surface of the strand, or the air is introduced into the strand. Since the reoxidation product is a typical condensate, it needs to be captured during the continuous casting operation, otherwise the inclusion will seriously affect the cutting, surface quality and other mechanical properties of the steel. Non-metallic inclusions in steel from many sources, of which 40% of the large tanks of high temperature molten steel in direct contact with air as a result of re-oxidation. It has been reported that the large inclusions in the steel flow between the large tank and the tundish have increased by 2.5 times due to the reoxidation of the atmosphere. Large inclusions in the steel flow between the tundish and the mold due to erosion of the water outlet But increased 3.6 times. because