近十年来,铝及铝合金的普及是异常惊人的,其中挤压型材的用量近几年来也大幅度地增加了。因此,铝型材挤压机设备大都是在短期内建造的。1965年以后,日本建造的挤压机有115台,大致和西欧(包括英国)的挤压机台数总和相等,但是,这些挤压 Over the past decade, the popularity of aluminum and aluminum alloy is exceptionally alarming, of which the amount of extruded profiles has also increased dramatically in recent years. Therefore, the aluminum extrusion machine equipment is mostly built in the short term. After 1965, there were 115 extruders built in Japan, roughly equal to the sum of the number of extruders in Western Europe (including the United Kingdom). However, these squeezes