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铁型复砂铸造工艺近年来发展较快,客观上化学工业进步,能提供足够量的热固性树脂。便主要由于其本身工艺的优点。铁型复砂铸造既能获得具有壳型铸造那样的几何情度和光洁度的铸件,又具有比壳型铸造成本低廉,工艺简单便于实现机械化批量生产等优点。特别在球墨铸铁件上还具有减少缩孔、缩松产生,提高成品率的优点,经济效益显著。现今我省已有三家球铁曲轴生产厂采用铁型复砂工艺,并组成机械化生产线进行生产。
In recent years, the rapid development of iron-type sand casting process, the objective of chemical industry progress, can provide a sufficient amount of thermosetting resin. It is mainly due to the advantages of its own technology. The iron type sand casting can not only obtain the castings with the same geometry and finish as the shell casting, but also has the advantages of lower cost than the shell casting, simple and easy process to realize the mechanized batch production and the like. Especially in the ductile iron castings also has to reduce shrinkage, shrinkage produced, improve the yield of the advantages of significant economic benefits. Nowadays, three iron-crankshaft crankshaft production plants in our province have adopted the iron-type compound sand process and formed a mechanized production line for production.