【摘要】 本文根据开裂氢浓度理论,针对不同的堆焊方法的不锈钢堆焊试块进行了氢剥离试验,并运用计算机对试块在试验中堆焊层中氢扩散过程进行了计算。从而得出了剥离试块的开裂氢浓度C_dc,发现开裂氢浓度与试样的几何尺寸、堆焊层的厚度及堆焊的方法等都有很大的关系。其中自动氩弧焊堆焊及CO₂气体保护焊堆焊的试块抗剥离性能明显优于其它方法,而相同几何尺寸及堆焊层厚度的手工堆焊试样和带极堆焊试样则抗剥离性能相当。更多还原

【Abstract】 In this paper, many experiments of the disbonding were made with the stainless weld overlay specimen which were made by many different weld processes. In the same time, the hydrogen content during the disbonding process was analyzed by applying numerical method to simulate the behavior of hydrogen diffusion in material. According to the theory of disbonding hydrogen content, we can obtain the disbonding hydrogen conternt Cdc of these specimen with the result of experiment and computation. We found that the disbonding resistance of the specimen made by auto-argon shielding are welding and CO2 are welding were better than by other welding methods.更多还原