论文部分内容阅读
我厂二车间有7台SZ124混砂机,配制的型砂分别供给造型工部4条自动造型线(可锻铸铁及球铁各两条)造型用。混砂机使用十多年后,电气元件老化,故障率高,维修工作量大,操作工只能用“手动”生产,不但劳动强度大,且混制的型砂质量不稳定,型废率高,因型砂质量而引起的铸件废品率也高。 1988年8月初,我厂用一套日本“立时”(OMRON)SRSMAC-C20可编程序控制器对可锻铸铁配砂工部进行改造,使3台混砂机按工艺要求自动运转,并与送砂胶带机连锁起
I plant two workshops have 7 SZ124 sand mixer, the preparation of the sand were supplied to the modeling department 4 automatic modeling lines (ductile iron and ductile iron each two) modeling. Mixer used more than 10 years after the aging of electrical components, high failure rate, the maintenance workload, the operator can only be “manual” production, not only labor-intensive, and mixed sand quality instability, high rate of waste , Due to the quality of castings caused by casting scrap rate is also high. At the beginning of August, 1988, our factory transformed a malleable cast iron sand department with a set of Japanese “OMRON” SRSMAC-C20 programmable logic controller to make the automatic operation of the three sand mills according to the technological requirements and the interaction with sand feeding Tape machine chain from