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通过孕育处理可扩大熔核凝固组织中的等轴晶区，并在合适的工艺条件下获得呈单一等轴晶组织的熔核。同时，对孕育处理前后的点焊接头力学性能作了系统的比较研究。
The equiaxed zone in the solidified structure of nugget can be broadened by inoculation process, and the nugget with single equiaxed crystal structure can be obtained under appropriate process conditions. At the same time, the mechanical properties of spot welding joints before and after inoculation were systematically and comparatively studied.