陈成, 苏钰, 桑震, 李莹, 冯萧萧, 崔浩田, 雷佳乐.激光热处理对EX1压铸模具钢组织和性能的影响[J].轻工机械,2019,37(3):41-45 |
激光热处理对EX1压铸模具钢组织和性能的影响 |
Effect of Laser Heat Treatment on Properties and Microstructure of EX1 Die Steel |
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DOI:10.3969/j.issn.1005 2895.2019.03.008 |
中文关键词: 压铸模具 EX1钢 激光硬化 激光加工工艺参数 摩擦磨损性能 |
英文关键词:die casting mould EX1 steel laser hardening laser processing parameters friction and wear properties |
基金项目:国家自然科学基金(51301105)。 |
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中文摘要: |
为了提高模具钢EX1性能,课题组采用5 kW光纤激光加工制造系统激光器,对EX1钢表面进行激光强化处理。采用扫描电子
显微镜、显微硬度计和摩擦磨损试验机等研究了激光强化工艺参数(激光功率P,扫描速度v)对EX1钢激光淬火层的组织、硬度及摩擦磨损的影响。研
究结果表明:激光强化处理后硬化层的显微组织明显细化,淬火区硬度明显高于基体。该研究提高了EX1钢表面的光滑度,降低了摩擦因数。 |
英文摘要: |
In order to improve the performance of die steel EX1,the surface laser hardening was treated on EX1 steel with the laser of the 5 kW fiber laser
processing and manufacturing system. The scanning electron microscope,microhardness tester and friction tester were used to study the influence of laser processing parameters (laser
power P,scanning speed v) on the microstructure,hardness and wear resistance of EX1 steel. The results show that the microstructure of the hardened layer can be
significantly refined,the hardness is significantly higher than that of the matrix,the smoothness of the surface is improved and the friction coefficient is reduced. |
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