With the development of laser technology, laser processing technology has become increasingly popular in the additive manufacturing, remanufacturing and repairing of hot work molds. Due to the special nature of laser processing technology, it is obviously different from the traditional forging or casting methods, resulting in the need for re-exploration and formulation of the heat treatment process. Therefore, this paper hopes to use laser deposition technology to add hard ceramic phase to prepare H13 steel composites, and to explore the effect of tempering treatment on the microstructure and properties of TiC reinforced H13 steel composites, and to provide theoretical support and practical reference for extending the life of H13 steel. The results indicated that the structure after laser deposition is mainly martensite and fine carbides. With the increase of the proportion of TiC, the structure of the sample becomes more fine and uniform. After tempering,the microstructure of the sample is high-temperature tempered martensite and fine carbides,and the distribution of TiC is more uniform.Compared with untempered amples, the hardness and tensile strength of the sample tempered are lower, but the wear resistance is enhanced.

随着激光技术的发展，激光加工技术已在热加工模具的增材制造，再制造和维修中日益流行。由于激光加工技术的特殊性，它与传统的锻造或铸造方法明显不同，因此需要对热处理工艺进行重新探索和制定。因此，本文希望通过激光沉积技术添加硬质陶瓷相来制备H13钢复合材料，并探索回火处理对TiC增强H13钢复合材料的组织和性能的影响，并为该工艺提供理论支持和实践参考。延长了H13钢的使用寿命。结果表明，激光沉积后的组织主要为马氏体和细碳化物。随着TiC比例的增加，样品的结构变得更加精细和均匀。回火后样品的显微组织为高温回火马氏体和细碳化物，TiC的分布更均匀。与未回火样品相比，回火样品的硬度和拉伸强度更低，但耐磨性得到增强。