论文部分内容阅读
1 序言 我们知道,焊接高性能工具钢是一种挑战,因为它含碳量高,合金含量高,故具有良好的淬火性能,当热源一旦离开,焊缝就会很快冷却,焊缝中的金属及部分热影响区就会淬火。从而约束焊缝,这些变化就会产生内应力,除非特别小心,否则就有开裂的危险。 但是,随着焊条质量的改善,焊接设备的改进,焊接技术的发展,以及工具钢质量的改
1 Introduction We know that welding high-performance tool steel is a challenge, because it contains high carbon content, high alloy content, it has good quenching properties, when the heat source once left, the weld will be cooled quickly, the weld Metal and some heat affected zone will be quenched. Thus restraining the weld, these changes will generate internal stress, unless there is special care, otherwise there is danger of cracking. However, with the improvement of electrode quality, the improvement of welding equipment, the development of welding technology, and the improvement of the quality of tool steel