梁强,徐永航,李永亮,王敬,彭云川,毛恺奕

• 1:重庆工商大学机械工程学院
• 2:重庆工商大学制造装备机构设计与控制重庆市重点实验室

摘要(Abstract)：

为了获得准确的粉末利用率，构建了一种全新的激光熔覆粉末有效利用率模型，并分析了不同工艺参数对激光熔覆粉末利用率的影响规律。首先，基于单道次激光熔覆层的实际测量结果，提出一种“两个四分之一椭球体和半个椭圆柱”的熔覆层近似模型，进而推导出单道及多道搭接激光熔覆粉末利用率模型。其次，以激光功率、扫描速度和送粉速度为设计变量进行单因素实验设计，并分别用3种不同的粉末进行激光熔覆实验。结果表明：各工艺参数对粉末利用率有较大的影响，采用新模型计算的平均粉末利用率与实际测量的平均粉末利用率之间的误差均小于3%,表明新模型能够准确计算出激光熔覆过程中粉末的有效利用率。

关键词(KeyWords)： 激光熔覆;工艺参数;粉末利用率

Abstract:

Keywords:

基金项目(Foundation): 重庆市自然科学基金(CSTB2022NSCQ-MSX0473);; 2021年度校内资助项目计划(2152026)

作者(Author): 梁强,徐永航,李永亮,王敬,彭云川,毛恺奕

DOI: 10.13289/j.issn.1009-6264.2023-0201

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