| 张志强,程宗辉,曹强,周可欣.30CrMnSiNi2A超强钢激光熔覆修复试验研究[J].装备环境工程,2016,13(1):62-67. ZHANG Zhi-qiang,CHENG Zong-hui,CAO Qiang,ZHOU Ke-xin.Repairing of 30CrMnSiNi2A High Strength Steel by Laser Cladding[J].Equipment Environmental Engineering,2016,13(1):62-67. |
| 30CrMnSiNi2A超强钢激光熔覆修复试验研究 |
| Repairing of 30CrMnSiNi2A High Strength Steel by Laser Cladding |
| 投稿时间：2015-09-17 修订日期：2016-02-15 |
| DOI：10.7643/issn.1672-9242.2016.01.012 |
| 中文关键词: 30CrMnSiNi2A 激光熔覆 修复 |
| 英文关键词:30CrMnSiNi2A laser cladding repairing |
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| 中文摘要: |
| 目的 研究激光熔覆技术， 解决30CrMnSiNi2A钢制部件表面腐蚀、 划伤、 裂纹等缺陷的修复问题。方法 利用光纤激光器在30CrMnSiNi2A钢表面进行同基体相近成分的合金粉末熔覆试验，优化激光熔覆工艺参数， 开展熔覆层的微观组织、 硬度、 力学性能等方面试验研究， 并对拉伸试样的断口进行分析。结果 熔覆层与基体呈现牢固的冶金结合， 基体热影响区域小， 熔覆区的抗拉强度大于基体强度的 80%， 熔覆区材质的脆性较基材有所增加。结论 激光熔覆可用于修复30CrMnSiNi2A钢制零件表面的腐蚀、 划伤、 裂纹等局部缺陷。 |
| 英文摘要: |
| Objective To investigate laser cladding technology so as to repair the defects such as surface corrosion, scratch and crack on 30CrMnSiNi2A high strength steel. Methods In this paper, an experiment of laser cladding on 30CrMnSiNi2A substrate was carried out by using fiber laser with near substrate powder, the processing parameters were optimized. The microstructure, hardness and mechanic performance of cladding layer were tested, and morphology of the fracture in the tensile test was analyzed. Results It was found that the cladding layer was well combined with substrate in metallurgy, the heat affected zone was small, the average tensile strength of cladding layer was higher than 80% of the tensile strength of substrate, while the brittleness of cladding layer was increased a little than that of substrate. Conclusion Laser cladding can be used to repair the defects such as surface corrosion, scratch and crack on 30CrMnSiNi2A high strength steel. |
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