碳在湿型砂中的作用.pdfVIP

学兔兔 Jan．2010 · 84 · VO1．59 NO．1 碳在湿型砂中的作用 Alexander Brown (James Durrans Group based at Penistone，Sheffield$36 9QU，England) 摘要：论述了原材料控制对于湿型砂铸件生产的重要性，阐述了碳质添加剂对铸件质量的影响，为了保证型砂质量的 稳定，必须深入了解和控制型砂粒度、总碳量、挥发分和灼烧减量的关系。考察了各种预测和控制方法。强调了各种 添加剂的性能及其作用以及它们的相互影响。对来料控制检测方法和加入混砂机的添加剂进行了讨论。对检测结果、 控制操作和用湿型砂获得性能稳定，质量高的铸件需要采取的措施做了评述，强调要了解和控制碳质添加剂对铸件性 能的影响。 关键词：煤粉；膨润土；湿型砂；总碳；挥发分 中图分类号：TG221文献标识码：A 文章编号：1001—4977(2010)01～0084—06 The Significance of Total Carbon in Greensand Systems Alexander Brown (James Durrans Group based at Penistone，Sheffield$36 9QU，England) Abstract：The need for control of raw materials iS criticaI to the success of iron casting production frOm greensand systems．The effect of carbonaceous additives on cast~g quality was reviewed，the relationship and effect of sand grading，total carbon，volatiles and IOSS on ignition for sand quality stabilization were knew and controlled．Various controI methods are examined；various predictive methods are Iooked at as a controI feature as wel1．The quality of additives and their role and more importantly their interaction iS highlighted．Also reviewed lS the interpretation of results and the action required to ensure control and more importantly consistent quality castings frOm greensand systems with the emphasis on the understanding and control of carb0nace0us additive on casting performance． Key words：graded coal；bentonite；greensand；totaI carbon；volatiles 特别是铸件重量和尺寸不断变化的铸造厂做定期检测。 1 原材料的控制