1前言钢筋冷压连接技术是我所开发出的重要科研成果，其主要特点是用机械连接的方法代替以往采用的捆轧和焊接手段，已广泛应用于各种重大工程建设中，有适用性强、快速、灵活等优点，已创造了逾亿元的综合经济效益。该技术所用的45钢冷挤压模消耗量大，在委托外单位热处理时， 1 Preface Cold connection technology of reinforced bar is an important scientific research achievement that I developed. Its main characteristic is to use the method of mechanical connection instead of the traditional rolling and welding methods. It has been widely used in various major construction projects, and has applicability Strong, fast, flexible and other advantages, has created more than 100 million yuan of comprehensive economic benefits. The 45 steel used in the technology cold extrusion die consumption, commissioned outside the unit heat treatment,