随着钢结构向大型、轻型、高参数方向发展,焊接冷裂纹(特别是恶劣环境下施焊)问题日见突出。为了研究水电站高压钢管现场焊接时的热处理工艺及出现的焊裂难题,我们采用国产WCF-60(62)钢与新结607CF焊条匹配,在预热或稍预热情况下模拟高压钢管的现场焊接工艺,并对模拟体进行了爆破试验。现将试验研究的成果介绍如下。 With the steel structure to the large, light, high-parameter direction, cold welding cracks (especially in harsh environment welding) problems have become increasingly prominent. In order to study the heat treatment process and the welding crack problem occurred in the on-site welding of high-pressure pipe in hydropower station, we used the domestic WCF-60 (62) steel to match with the new 607CF electrode to simulate the field welding of high-pressure pipe under the condition of preheating or slightly preheating Technology, and the simulation body was subjected to a burst test. Now the experimental research results are as follows.