阙林志,练国富,陈昌荣,黄旭

• 1:福建工程学院机械与汽车工程学院
• 2:福建省智能加工技术及装备重点实验室

摘要(Abstract)：

采用响应面法的中心复合设计建立了激光功率、扫描速度、气流量和碳钨粉末配比对熔覆层硬度和面积影响的数学模型，并通过方差分析和试验验证检测了数学模型的准确性。结果表明：熔覆层的硬度与激光功率和碳钨粉末配比成正比，与扫描速度成反比；熔覆层面积与激光功率成正比，与扫描速度成反比，碳元素盈余量对熔覆面积的影响不显著。以熔覆层的硬度和面积最大为优化目标进行验证试验，并基于数学模型对工艺参数进行优化与预测，得到最佳工艺参数为激光功率1700 W、扫描速度5 mm·s~(-1)、气流量13 L/min、碳钨粉末配比1.05∶1。采用最佳工艺参数所得的熔覆层硬度和熔覆面积的预测值和实际值的误差分别为0.56%、1.45%,验证了所建立模型的准确性。

关键词(KeyWords)： 激光熔覆;原位合成;碳化钨;响应面分析

Abstract:

Keywords:

基金项目(Foundation): 2021年省级科技创新重点项目(2021G02009)

作者(Author): 阙林志,练国富,陈昌荣,黄旭

DOI: 10.13289/j.issn.1009-6264.2022-0378

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