通过一系列电解充氢试验研究了堆焊层剥离的影响因素，并采用有限元分析方法计算了堆焊结构中氢浓度的分布．比较了不同试作条件对试验结果的影响．结果显示，一定的母材厚度和焊后热处理条件，使熔合线附近氢浓度峰值提高，从而使氢剥离倾向增大．文中对试块近溶合线区的显微组织进行了研究．结果表明，提高焊后热处理参数，熔合线堆焊层侧增碳层宽度增加，氢致剥离的倾向增大． A series of electrolytic hydrogen charging tests were conducted to study the factors that affected the delamination of the overlay and the distribution of hydrogen concentration in the overlay was calculated by finite element analysis. The effects of different experimental conditions on the test results were compared. The results show that a certain thickness of the base metal and the post-weld heat treatment conditions increase the peak hydrogen concentration in the vicinity of the fusion line, thereby increasing the hydrogen stripping tendency. In the paper, the microstructure of near fusion zone of test piece was studied. The results show that when the post-weld heat treatment parameters are increased, the width of the carbon layer on the welding line increases, and the tendency of hydrogen to peel off increases.