我厂自七五年生产印染机—单元机上的轧辊体以来,一直是采用老的工艺,坭芯的制作工艺为:在管道上缠草绳,打铁钉铺砂子,车成型。操作麻烦,且芯子烘烤温度不易控制。铸件废品多,均为砂眼、气孔。 前一阶段,我厂把呋喃树脂自硬砂应用于薄壁墙板类坭芯和小件坭芯上,成批生产, I plant since 1975, the production of printing and dyeing machine - unit roller body has been the use of old technology, the core of the production process is: in the pipe wrapped rope, paving sand nail shop, car molding. The operation is troublesome, and the core baking temperature is not easy to control. Casting waste and more are trachoma, stomatal. In the previous stage, our factory applied the furan resin self-hardening sand to the core of thin-walled wall panel and core of small piece,