硅热法制取稀土镁硅铁及其对铸铁变质效果的研究

• 作 者: 盛达 黄惠松 林炜 毕生
• 机 构: 清华大学rrrrrrrrn,清华大学rrrrrrrrn,清华大学rrrrrrrrn,清华大学
• 出 处: 兵器材料科学与工程
• 发表日期: 1990年02期
• 关键词: 稀土镁硅铁 变质效果 硅热法 铸铁材料 含镁量 球铁 球化剂 蠕墨铸铁 冶炼工艺 过共晶

本文叙述了用硅铁还原MgO直接制取稀土镁硅铁,并使合金含镁量可达到3～5％,从原材料、装料配比和方式、冶炼工艺、操作程序诸方面研究了影响所冶炼合金含镁量的主要因素。用研究所取得的主要参数,在实验室制取了公斤级的合金,并用这种合金处理铁水,获得了合格的球墨铸铁,性能良好,σ_(5max)=760N/mm~2。表明用硅热法制取稀土镁合金具有工业应用前景。

This paper describes the use of ferrosilicon reduction of MgO direct preparation of rare earth magnesium ferrosilicon, and the magnesium content of the alloy up to 3 to 5%, from the raw materials, the ratio and mode of charging, smelting process, operating procedures, Smelting alloy magnesium content of the main factors. Using the main parameters obtained from the research, a kilogram of alloy was prepared in the laboratory and the molten iron was treated with this alloy to obtain the qualified ductile iron with good performance, with σ_ (5max) = 760N / mm ~ 2. It shows that the preparation of rare earth magnesium by silicon thermal method has the industrial application prospect.