日本石川岛播磨重工业公司最近接受造币局建造一台用于轧制铜和铜合金的IPV轧机(异步轧机)的定货。预定1983年3月交货。这种轧机用作冷轧具有轧制力小,产品质量高和成本低等优点。传统四辊轧机是上下辊以完全相同的圆周速度进行轧制。而IPV轧机却可根据轧制条件上下辊以不同的圆周速度进行轧制,而 Ishikawa Island Broadcasting Co., Ltd. recently received an order from the Mint to build an IPV mill (asynchronous mill) for rolling copper and copper alloys. Scheduled for delivery in March 1983. The mill used for cold rolling has the advantages of small rolling force, high product quality and low cost. Conventional four-high rolling mill is the upper and lower roller rolling at exactly the same circumferential speed. However, according to the rolling conditions, the IPV rolling mill can roll at different circumferential speeds