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一、前言无硅镁球化剂是一种杏仁状的新型球化剂。这种球化剂以纯铁粉和纯镁粉加压而成。起球化剂作用的其它元素如铈、钙等也可加在其中。这种球化剂含硅小于3％,基本上可认为是无硅的;单块重量约16～20克;依其不同的组成,比重在4.5～6.1之间。该球化剂指定用冲入法进行球化处理,冲入法用的浇包高度和直径之比以2:1为宜。球化剂上应复盖一些防止铁水飞溅的小铁片,包底要做一能放球化剂的凹坑,坑的大小需经正确计算,使球化剂及复盖材料完全充满而又不致溢出;球化剂及复盖剂应紧密排列,以防过早反应,並促使球化剂逐层和铁水起作用。
First, the foreword Si-free nodular agent is a kind of almond-shaped new nodulizer. This nodulizer is made of pure iron powder and pure magnesium powder. Other elements that act as nodulizers, such as cerium, calcium, etc. may also be added thereto. This nodulizer contains less than 3% silicon and can basically be considered as silicon-free; a single piece weighs about 16-20 grams; depending on its composition, the specific gravity is between 4.5 and 6.1. The nodulizer specified by the ball into the law, into the law with a ladle height and diameter ratio of 2: 1 is appropriate. Nodulizer should cover some of the small pieces of iron to prevent the splash of molten iron, to be done at the end of a pilling agent dimples, pit size to be the correct calculation, the nodulizer and covering material completely filled Will not overflow; nodulizer and covering agent should be arranged closely to prevent premature reaction, and to promote nodulizer layer and the role of hot metal.