V法发明以来,已有十年。在此期间,由于经济衰落,获准使用厂家的数量曾一度停滞不前。后来,又稳步增长起来。现在,日本国内已有108家获得V法使用权并已投入实际生产。此外,在美国、西德等欧美国家已有60家工厂采用V法,可以说V法已成为世界性的造型工艺。 V法生产铸件的种类,已从初期的铝盆、钢琴架、澡盆等非加工铸件扩大到机械加工件、汽车铸件及铜合金铸件等。 V law has been invented for ten years. During this period, the number of approved manufacturers was at a standstill due to the economic downturn. Later, it grew steadily again. Now, 108 domestic companies have obtained the right to use the V Act and have already put into actual production. In addition, in the United States, West Germany and other European and American countries already have 60 factories using the V method, we can say that the V method has become a worldwide modeling process. V production of casting types, from the initial aluminum basin, piano racks, baths and other non-processing castings expanded to machined parts, automotive castings and copper alloy castings.