基于响应面法与粒子群算法的石油管螺纹激光清洗工艺参数优化  

Optimization of Laser Cleaning Process Parameters for Petroleum Pipe Threads Based on Response Surface Method and Particle Swarm Algorithm

作　　者：孙兴伟[1,2] 张众 杨赫然[1,2] 董祉序 刘寅[1,2] Sun Xingwei;Zhang Zhong;Yang Heran;Dong Zhixu;Liu Yin(School of Mechanical Engineering,Shenyang University of Technology,Shenyang 110870,Liaoning,China;Key Laboratory of Numerical Control Manufacturing Technology for Complea Surfaces of Liaoning Province,Shenyang 110870,Liaoning,China)

机构地区：[1]沈阳工业大学机械工程学院,辽宁沈阳110870 [2]辽宁省复杂曲面数控制造技术重点实验室,辽宁沈阳110870

出　　处：《中国激光》2022年第22期34-46,共13页Chinese Journal of Lasers

基　　金：中央引导地方科技发展专项资金(2020JH6/10500048);国家自然科学基金(52005347,52005346)。

摘　　要：为了探究激光功率、离焦量、扫描速度等工艺参数对石油管螺纹激光除锈效果的影响规律并获得最优工艺参数组合,以表面粗糙度值为指标,采用正交实验法进行石油管螺纹激光清洗实验,得出影响激光清洗效果因素的显著性排序。通过单因素实验法,得出不同工艺参数下的表面粗糙度值和氧元素含量的变化规律。以氧元素含量衡量清洗样件的表面损伤程度,以表面粗糙度为优化目标进行工艺参数优化。基于响应面法建立优化目标与激光工艺参数之间的数学模型,将数学模型与优化后的粒子群算法结合,得出优化工艺参数组合,即激光功率为488 W,离焦量为+3 mm,扫描速度为3000 mm/s。在优化后的工艺参数下进行管螺纹激光清洗加工,实验结果表明,管螺纹表面锈蚀层被去除,基底表面清洗效果良好,且熔池周围无熔融物,证明了方法的有效性。Objective The laying environment of petroleum drill pipe is always poor, and the laid soil contains oxidizing bacteria, moisture, air, etc. During service, rust often occurs at the internal and external threads of the drill pipe joint, resulting in unstable connection of internal and external threads. In order to improve the utilization rate of steel, derusting methods are often used to repair the surface of metal parts in industrial field. The traditional rust removal methods are mainly mechanical, manual and chemical methods, among which the mechanical methods are sand blasting and high-pressure water flow. Compared with traditional cleaning methods, laser cleaning has the characteristics of green environmental protection, high efficiency and non-contact. It has gradually become a common cleaning method in industry. As an advanced cleaning technology, laser cleaning focuses high-energy laser on the corrosion layer to be cleaned. After the surface corrosion layer absorbs laser energy, the thermal coupling phenomenon and plasma shock wave effect appear, and the effect of surface rust removal is realized. Therefore, the pulse laser is used to clean the corrosion on the surface of NC50 petroleum pipe thread, and the significance of the influence of different factors on the cleaning effect is systematically analyzed to provide theoretical guidance for the laser cleaning of industrial petroleum pipe thread.Methods The laser cleaning experiment is carried out on the petroleum pipe thread by the orthogonal experiment method, and the orthogonal data table is analyzed with the surface roughness as the evaluation index, and the significance order of the factors influencing the laser cleaning effect is obtained. The surface roughnesses and oxygen contents under different process parameters are obtained by the single factor experiment. The surface damage of cleaning samples is measured with oxygen contents, and the process parameters are optimized by taking surface roughness as the optimization objective. Based on the respo

关 键 词：激光技术 激光功率 离焦量 扫描速度 表面粗糙度 粒子群算法 

分 类 号：TN249[电子电信—物理电子学]