论文部分内容阅读
前言 70年代以来,在人容量上频感应炉中依靠电磁场造成金属液的强烈搅拌获得合成铁碳合金是铸造车间铸铁熔炼的一个重要的新阶段。合成铸铁生产过程的实质是用增碳剂和铁合金随着二次黑色金属炉料的熔化,使必需数量的碳和其它合金元素溶于铁水,通过合理利用感应炉特有的温度—时间处理条件,获得高质量的铁水。合成铸铁的炉料只用很少量甚至完全不用铸造生铁,它主要由废钢、废铸件、冲压和其它生产过程的边角料、钢屑和铸铁屑构成;感应炉内可以自由控制的金属液过热温度造就了使各种添加剂在电磁搅拌下具有很高吸收率的有利条件;熔化、增碳和精炼工艺可在很宽范围内调整,这样一种熔炼工艺过程特别稳定,容易控制和实现自动化管理;生产过程与冲天炉熔炼本质上的不同使铸件的化学成分和组
Preface Since the 1970s, the synthesis of iron-carbon alloy has been an important new stage in cast iron smelting in the foundry. The essence of the synthetic cast iron production process is that the carbon black and other alloy elements are dissolved in the molten iron as the secondary black metal charge is melted by the carbonizing agent and the iron alloy and the temperature-time processing conditions unique to the induction furnace are used reasonably to obtain High quality hot metal. The cast iron is used for the production of cast iron only with very little or no cast iron at all. It is mainly composed of scrap, waste castings, scrap from stamping and other production processes, steel chips and cast iron filings. The superheat temperature of the molten metal So that a variety of additives under electromagnetic stirring with high absorption rate of the favorable conditions; melting, carbon and refining process can be adjusted in a very wide range, such a smelting process is particularly stable, easy to control and automated management; production The process is essentially different from cupola melting, making the chemistry and composition of the casting