一、坯件制造 1.灰铸铁床身大件民主德国阿舍斯勒本(Aschersleben)机床厂是一家生产龙门刨床、龙门铣床、导轨磨床的重型机床厂,它的铸工车间建筑陈旧,规模不大,全车间仅一百人,但它采用的技术却很新。他们使用呋喃树脂造型已有十年,用量为2％。他们的产品系列中同一宽度的长度规格很多,床身外模采用拼合式,即不采用木型制作砂模,而是用数块长约1m的积木式砂块 First, the blank manufacturing 1. Gray cast iron bed large pieces of democracy Germany Asher Sisley (Aschersleben) Machine Tool Plant is a production of gantry planer, gantry milling machine, rail grinder heavy machine tool plant, it’s cast-iron workshop building is old, the scale is not Large and full workshop only 100 people, but it uses the technology is very new. They have used furan resin modeling for 10 years, the amount of 2%. Their product line in the same width of the length of a lot of specifications, the use of flat-bed formwork, that is, not using wood-making sand mold, but with a few pieces of block length of about 1m blocks