日本采用万能轧机立辊刻出花痕方式,把 H型钢的 H 型腰部切分开而成为花棱 T 形,这类 T形花棱型钢可做轻量桥底板混凝土钢骨等。日本采用深加工技术,用花棱钢板制成电机外壳,这种外壳有散热快、寿命长、体积轻、价格低等优点,使相同容量电机重量减少23%。日本已生产出250多万台这类外壳电机。日本年产近百亿个食品罐。由于不断改进深加工技术,近年来已 Japan using universal mill vertical roll carved flower mark way, the H-beam H-shaped waist cut into a flower-edge T-shaped, T-shaped flower edge of the beam can do lightweight concrete floor steel bridge and so on. Japan uses deep processing technology, made of flower-edge steel motor shell, this shell has fast heat, long life, light weight, low price, the same capacity of the motor to reduce the weight of 23%. Japan has produced more than 2.5 million such shell motors. Japan produces nearly 10 billion food cans annually. Due to continuous improvement of deep processing technology, in recent years already