<p><span quot;color: black;"><strong><span quot;font-size: medium; font-family: Arial;">速熔硅</span></strong></span></p> <p><span quot;font-family: Arial;"><span quot;font-size: larger;"><span quot;font-size: medium;"><span quot;color: black;">本品适于铝合金中矽</span><span quot;color: black;">(si)</span><span quot;color: black;">元素添加或微量成份调整，以替代铝硅中间合金。本品含硅</span><span quot;color: black;">95%</span><span quot;color: black;">以上，可在正常融化温度下直接加入融化块，使用简便，速溶矽中矽的实收率大于</span><span quot;color: black;">92%</span><span quot;color: black;">。</span></span></span><span quot;font-size: larger;"><span quot;font-size: medium;"><strong><span quot;color: black;">特点：</span></strong>密度大于铝液，在铝液中自沉，有熔剂保护助熔，加快了熔解速度。实现了稳定的元素实收率以及经济的生产方式，避免了因熔炼温度过高造成的铝及合金元素的烧损；同时所含熔盐有利于净化铝液。因此，合金元素的实收率较高，一般应大于95%。</span><span quot;color: black;"><br /><span quot;font-size: medium;"> <strong> </strong></span></span><span quot;font-size: medium;"><strong><span quot;color: black;">用法：</span></strong><span quot;color: black;">加入温度</span><span quot;color: black;">740</span><span quot;color: black;">℃</span><span quot;color: black;">以</span><span quot;color: black;">上，加入温度越高收率越高，</span><span quot;color: black;">并静置</span><span quot;color: black;">20-30</span><span quot;color: black;">分钟，搅拌均匀。</span></span><span quot;color: black;"><br /></span><span quot;font-size: medium;">对温度较敏感，所以铝液温度需控制在750±5℃时投入速熔硅，否则将延长停留时间。</span></span><span quot;font-size: medium;"><span quot;font-size: larger;"><span quot;color: black;">如果合金中</span><span quot;color: black;">Si</span><span quot;color: black;">的含量要求很高，计算加入量小于炉料总量的</span><span quot;color: black;">3%</span><span quot;color: black;">时，可一次性加入；如果超过</span><span quot;color: black;">3%</span><span quot;color: black;">，需分批加入，防止堆积。</span></span><span quot;font-size: larger;"><strong><span quot;color: black;">本品参考用量按下式计量：</span></strong></span></span></span></p>