日本的日立电线(株)研制成一种新型的钢水脱硫、脱氧添加剂.该添加剂系以0.2毫米厚普碳钢钢带为外皮,以纯金属钙或钙和铝的混合物为芯制成外径为4.8和7.0毫米的盘条.制造工艺过程:将钙和铝以一定的比例(通常为60∶40)混合,挤压成丝,包上铁皮后经拉模冷拔成复合盘条.平均每公斤盘条能处理一吨钢水.日立电线每月可生产50吨铁包钙、铝丝,其中60%供日本国内的各大钢铁公司以及东北特殊钢、山阳特殊钢、大同特殊钢、日本制钢等特殊钢厂,其余40%向美国、西德、英国、法国和澳大利亚出口.一、特点:1. 通过专用的送料器能连续地、以平均100米/分钟的速度将处理丝垂直地插进钢水中,在氧、硫含量各为100ppm以下时,经处理可降低50%左右.2. 与采用硅钙合金脱硫法相比,无烟尘,反应均匀而稳定,使钙在钢中的收得率由原来的1～3%提高到20%.3. 与稀土元素脱硫法相比,钢的纯洁度和钢 Japan’s Hitachi Cable Co., Ltd. developed a new type of molten steel desulfurization and deoxidation additives. The additive system to 0.2 mm thick plain carbon steel strip as the skin, made of pure metal calcium or a mixture of calcium and aluminum as the outer diameter of 4.8 And 7.0 mm wire rod Manufacturing process: The calcium and aluminum in a certain ratio (usually 60:40) mixed, extruded into wire, wrapped in iron after the drawing cold drawn into a composite rod. Average per kg Wire rod can handle a ton of molten steel. Hitachi wire can produce 50 tons of iron calcium, aluminum wire per month, 60% of which for the major domestic steel companies in Japan and Northeast Special Steel, Special Steel Sanyo, Datong special steel, made in Japan Steel and other special steel mills, the remaining 40% to the United States, West Germany, Britain, France and Australia exports. Features: 1. Through a dedicated feeder can be continuous, with an average of 100 m / min speed of the processing wire vertically Into the molten steel, oxygen, sulfur content of 100ppm or less, the treatment can be reduced by about 50% .2 compared with the use of calcium and silicon alloy desulfurization method, no smoke, the reaction is uniform and stable, the calcium in the steel income Yield from the original 1 to 3% increased to 20% .3 rare earth element desulfurization phase , Purity of the steel and the steel