电渣焊焊缝中有时发现细小的裂缝.裂缝长度通常小于6毫米,因此,对于用在要求比较高的地方(例如桥梁)的受压构件应用电渣焊焊接产生了顾虑。由于这种缺陷出现在先共析铁素体.即原始奥氏体晶界上,所以它们常被认为是晶界裂缝。 Small cracks are sometimes found in ESR welds, which are usually less than 6 mm in length, so there are concerns that ESR welds should be applied to compression members that require more space, such as bridges. Because of this defect in the pro-eutectoid ferrite, which is the original austenite grain boundaries, so they are often considered as grain boundary cracks.