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1.山东新华医疗器械股份有限公司, 淄博 255000
2.重庆工商大学机械工程学院,重庆 400067
Received:10 February 2026,
Revised:2026-02-28,
Accepted:04 March 2026,
Online First:07 April 2026,
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程君,彭康威,王敬等.Cr12MoV 模具钢激光抛光过程中工艺参数与热效应的关联性分析[J].特殊钢,
Cheng Jun,Peng Kangwei,Wang Jing,et al.Study on the Correlation between Process Parameters and Thermal Effects during Laser Polishing of Cr12MoV Die Steel[J].Special Steel,
激光抛光可以有效提高冷作模具钢Cr12MoV的表面质量。为了探索该钢种激光抛光表面质量的影响因素,利用正交实验法进行实验方案设计,采用不同激光抛光工艺参数对冷作模具钢Cr12MoV进行表面处理,通过对其抛光层组织及裂纹等几何形貌的表征,研究分析该模具钢激光抛光过程中表面裂纹的生成及扩散机理。利用SPSS软件评估激光抛光工艺参数对模具钢抛光部位的重熔区深度、抛光层深度、表面粗糙度和裂纹等表面质量的影响规律。研究发现:所有实验组次获取的模具钢抛光表面其表面粗糙度与原始表面均有所降低,最高可将模具钢的表面粗糙度降低至0.944 μm,较原始粗糙度降低88.8%。部分抛光功率较大组次获取的模具钢抛光表面出现了裂纹现象。激光抛光过程中,激光工艺参数直接影响模具钢的重熔区深度、抛光层深度、裂纹尺寸以及表面粗糙度等表面质量,其中,激光功率、扫描速度是模具钢的以上表面质量指标的显著影响因素,搭接率对以上表面质量指标的影响呈非显著关系。合理选择激光抛光工艺参数可以有效改善冷作模具钢Cr12MoV的表面质量。
Laser polishing can effectively improve the surface quality of cold work die steel Cr12MoV. To explore the influencing factors of surface quality during laser polishing, an orthogonal experimental design was employed to formulate the experimental protocol. Cr12MoV die steel surfaces were treated using varying laser polishing parameters. Through characterization of the polished layer microstructure and geometric features such as cracks, the mechanisms underlying crack initiation and propagation during laser polishing of Cr12MoV die steel were examined. SPSS software was utilized to assess the influence patterns of laser polishing parameters on surface quality metrics of the polished regions, including remelted zone depth, polished layer depth, surface roughness, and crack formation. The results show that the surface roughness of all polished die steel specimens across experimental groups was reduced compared to the original surface, with the minimum value reaching 0.944 μm, decreased by 88.8% relative to the original surface. Crack formation was observed on the polished surfaces of die steel specimens in certain groups subjected to higher polishing power. During laser polishing of Cr12MoV die steel, laser process parameters directly effect surface quality indicators such as remelted zone depth, polished layer depth, crack dimensions, and surface roughness. Among these parameters, laser power and scanning speed are significant factors affecting the aforementioned surface quality metrics, whereas the influence of overlap rate is non-significant. Optimal selection of laser polishing process parameters can effectively enhance the surface quality of Cr12MoV die steel.
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