摘要:
Process for continuous casting of a steel slab free from surface defects, which comprises oscillating a mold under an oscillation condition which restricts the deformation of a meniscus portion of a strand shell so as to prevent oscillation defects.
摘要:
The refining of chromium-containing molten steel by the treatments of decarburization, reduction, and desulfurization is improved in terms of consumption of argon gas used for blowing molten steel, amount of refractories of an AOD furnace, and CaO and CaF.sub.2, etc. by a process which comprises adding to the slag existing after completion of the decarburization, metallic Al as a reducing agent and CaO as a slag-forming agent respectively in amounts necessary for the slag, after completion of the subsequent reduction, to acquire a SiO.sub.2 content of not more than 10% and a CaO/Al.sub.2 O.sub.3 ratio in the range of 0.8 to 2.0, thereby enabling the treatments of reduction and desulfurization to proceed simultaneously.
摘要翻译:通过脱碳,还原和脱硫处理对含铬钢水的精炼在用于吹制钢水的氩气消耗量,AOD炉的耐火材料量,CaO和CaF 2等的消耗方面得到改善 方法,其包括在完成脱碳后添加作为还原剂的金属Al和作为炉渣形成剂的CaO作为炉渣所需的量,在后续还原之后,获得不含SiO 2的量 大于10%,CaO / Al 2 O 3比在0.8〜2.0的范围内,能够同时进行还原脱硫处理。
摘要:
A method of regulating the flow of molten metal through the pour opening of a vessel is disclosed which is characterized by a combination of a pair of load detecting elements and a contactor which is disposed between the load detecting elements such that there is effected control of a hydraulic cylinder for actuating a sliding control nozzle which is capable of moving bit-by-bit resulting in the fine regulation of the sliding control nozzle.