以铁代铜的技术天津纺织工学院研究“以铁代铜”的工作已有多年，现已研制成功一种“以铁代铜”的技术。用此技术可用铸铁代替铜制作耐磨零件，如针筒、轴瓦、泵、蜗轮等零件。所研制的特种铸铁（ＺＴＡ合金），在耐磨性能与铜合金相当的情况下，价格比铜铸件每吨便宜２?.. The technology of iron and copper on behalf of Tianjin Textile Institute of Technology “Iron and copper on behalf of” work has been for many years, has been successfully developed a “iron and copper” technology. Cast iron can be used in this technology instead of copper wear-resistant parts, such as syringes, bearings, pumps, worm and other parts. The developed special cast iron (ZTA alloy), in the case of wear resistance and copper alloy, the price is cheaper than copper castings 2 tons per ton.