高霁,宋德阳,冯俊文.工艺参数对钛合金激光熔覆 CBN 涂层几何形貌的影响[J].表面技术,2015,44(1):77-80,87.
GAO Ji,SONG De-yang,FENG Jun-wen.Influence of Processing Parameters on Geometrical Features of CBN Coatings by Laser Cladding on Titanium Alloy Surface[J].Surface Technology,2015,44(1):77-80,87 |
| 工艺参数对钛合金激光熔覆 CBN 涂层几何形貌的影响 |
| Influence of Processing Parameters on Geometrical Features of CBN Coatings by Laser Cladding on Titanium Alloy Surface |
| 投稿时间：2014-08-03 修订日期：2015-01-20 |
| DOI： |
| 中文关键词: 激光熔覆 CBN 涂层 几何形貌 工艺参数 |
| 英文关键词:laser cladding CBN coating geometrical features processing parameter |
| 基金项目:辽宁省自然科学基金项目(201202172) |
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| 中文摘要: |
| 目的 获得制备形貌较佳的 CBN 激光熔覆层的工艺参数。 方法 以 CBN 粉末为熔覆材料,在TC11 钛合金表面制备 CBN 熔覆层。 设计正交试验,利用金相法检测熔覆层的几何形貌参数,研究工艺参数(激光功率、扫描速度、离焦量、预置层厚度)对涂层几何形貌的影响规律。 结果 随着激光功率、扫描速度、离焦量和预置层厚度的增大,熔覆层宽度、高度以及熔池深度都发生相应的改变。 其中扫描速度对熔覆层形貌的影响最大,其次为激光功率和预置层厚度,离焦量的影响最小。 随着激光功率增大,熔覆层宽度先增大后减小,熔覆层高度逐渐降低,熔池深度逐渐增大。 扫描速度、离焦量和预置层厚度的增加都导致熔覆层宽高和熔池深度的减小。 结论 最优的工艺参数为:激光功率 1400 W,扫描速度 4 mm/ s,离焦量 35 mm,预置层厚度 0. 4 mm。 |
| 英文摘要: |
| Objective To obtain the process parameters for CBN laser cladding of better morphology. Methods The CBN coatings were prepared by laser cladding on TC11 titanium alloy surface with CBN powder. An orthogonal test was designed and metallographic method was used to detect the geometric parameters of the cladding layer. The influencing law of the processing parameters including laser power, scanning speed, defocusing distance and preset thickness on the laser cladding layer morphology was researched. Results The width, height and molten pool depth of the cladding layer were changed as the laser power, scanning speed, defocusing distance and preset thickness increased. It was concluded that the scanning speed had the most important effect, followed by the laser power and the preset thickness, and then the defocusing distance. It indicated that the width of the cladding layer first increased and then decreased, the height of the cladding layer increased and the depth of molten pool decreased with the increase of laser power. The width, height and the molten pool depth of the cladding layer decreased with the increase of scanning speed, defocusing distance and preset thickness. Conclusion The optimal processing parameters were obtained, the laser power was 1400 W, the scanning speed was 4 mm/ s, the defocusing distance was 35 mm and the preset thickness was 0. 4 mm. |
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