铸铝青铜ZZnlA19Fe3由于它具有耐磨、耐腐蚀和优良的机械性能,长期以来被用于制造蜗轮、轴套、丝母等零件。但由于我国钢材紧缺、价格昂贵,造成零件成本较大幅度提高。我厂生产的卷板机、弯管机、校平机、开卷校平剪切线等八大类,200多个规格的产品,年用铜量80多吨。我们曾采用上海 Cast aluminum bronze ZZnlA19Fe3 because of its wear resistance, corrosion resistance and excellent mechanical properties, has long been used to manufacture worm gear, bushings, nut and other parts. However, due to the shortage of steel in China, the price is high, resulting in a substantial increase in the cost of parts. I plant the production of Bending Machine, Bending Machine, school machine, uncoiling cutting lines and other eight categories, more than 200 specifications of the product, with more than 80 tons of copper. We have used Shanghai