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目前的土壤检测探头存在结构装配关系复杂、线路气接头震动松动等问题,使用增材制造的方法可以较好地优化探头的结构并进行一体化制造。因此,根据土壤污染检测钻具的功能要求,研制一种可装配加热集气单元的新型结构钻头,设计集气与加热单元,并在COMSOL中设计土样加热模型,开展加热过程仿真,之后选用GH4169粉末作为探头的制备原料,采用选区激光熔化技术进行增材制造工艺实验。温升模拟结果与实测值的平均误差为9.54%,温度差在可接受的范围之内,证明了加热功率的合理性,水平打印、打印激光能量密度为86.42 J/m3时的工艺参数较适合钻头的制造。最后,打印制造一体化钻头,加热集气测试满足设计要求,为我国检测场地污染采样钻头设计与制造提供了一种新方法。
Abstract：At present, there are some problems such as complicated structure assembly relationship and loose vibration of line gas joint. The method of additive manufacturing can optimize the structure of the probe and carry out integrated manufacturing. Therefore, according to the functional requirements of the drilling tool for soil pollution detection, a new structural drill which can be equipped with a heating gas collection unit was developed, the gas collection and heating unit were designed, and the soil sample heating model was designed in COMSOL to carry out the heating process simulation, and then GH4169 powder was selected as the raw material for the preparation of the probe. The additive manufacturing process was tested by selective laser melting technology. The average error between the simulated temperature rise and the measured value is 9.54%, and the temperature difference is within the acceptable range, which proves the rationality of the heating power. The process parameters of horizontal printing and printing laser energy density of 86.42 J/m3 are more suitable for the manufacturing of drill bits. Finally, the integrated drill bit is printed and manufactured, and the heating gas collection test meets the design requirements, which provides a new method for the design and manufacture of the sampling drill bit for site pollution detection in China.
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基本信息:
DOI：10.14128/j.cnki.al.20264608.015
中图分类号:P634.41;TN249;TP391.73
引用信息:
[1]尹佳伟,华昺力,杨发荣,等.基于选区激光熔化工艺的一体化钻头设计与制造[J].应用激光,2026,46(08):15-26.DOI:10.14128/j.cnki.al.20264608.015.
基金信息:
陕西地建-西安交大土地工程与人居环境技术创新中心开放基金资助项目(201912131-A3)
2026-08-25
2026-08-25