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探讨了Q235钢在溶液中快速微弧渗碳过程。通过观察渗碳过程、渗碳金相组织,借助SEM观测渗碳层形态,利用显微硬度计测试表面硬度,初步认识了溶液中快速微弧渗碳工艺的条件和过程。结果表明,在电压150 V左右,对试样微弧渗碳15 min后,试样表面化合物层的硬度能达到710 HV左右,约为基体硬度的4倍。
The rapid micro-arc carburization of Q235 steel in solution was discussed. By observing carburizing process and carburizing microstructure, the morphology of carburized layer was observed by SEM, and the surface hardness was measured by microhardness tester. The conditions and process of rapid microarc carburization in solution were preliminarily understood. The results show that the hardness of the compound layer can reach about 710 HV at about 150 V and 15 min after micro-arc carburizing, which is about 4 times of the hardness of the matrix.