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作者在分析目前国内应用的保温冒口套物化性能与工艺特点的基础上,结合各类合金对冒口保温材料的性能要求,经优化工艺,研制出一种“空心微珠保温冒口套”.通过两年来的生产实践表明:这种保温冒口套的保温性能优良,一般可使铸钢件工艺出品率提高到70—85%,保温冒口套强度大(>2.5MPa)、耐火度高(>1600℃)、适用于各类铸造合金;保温冒口套易成型,操作使用方便,浇注时不产生烟、气、味,清理时不粘附铸件,呈块状脱落,不污染型砂;保温材料来源广、制品成本低,铸造厂使用后具有明显的技术、经济效益.
Based on the analysis of physicochemical properties and process characteristics of thermal riser sets applied in China at present, combining with the performance requirements of riser thermal insulation materials of all kinds of alloys, the authors developed a “hollow bead thermal riser sleeve” Through two years of production practice shows that: this thermal riser sleeve insulation performance is excellent, the general casting process can make the product rate increased to 70-85%, thermal riser sleeve strength (> 2.5MPa), refractoriness High (> 1600 ℃), suitable for all kinds of casting alloy; Insulating riser sleeve easy to shape, easy to use, pouring does not produce smoke, gas, taste, does not adhere to the casting cleaning, was massive off, ; Wide source of insulation materials, low cost products, casting foundry has obvious technical and economic benefits.