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国外文献 > 1.轴承 > 3. 材料与制造 > 制造工艺

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标 题： Additively manufactured porous restrictor for aerostatic bearing
用于气动轴承的增材制造多孔限流器
作 者： Onni Leutonen
Roy Bjorkstrand
Mikael Miettinen
Mika Salmi
Raine Viitala
关键词： Additive manufacturing  [增材制造]
Gas bearing  [ 含气]
Externally pressurized bearing  [ 外压轴承]
Porous metal  [ 多孔金属]
Laser-based powder bed fusion of metals  [ 基于激光的金属粉末床熔融]
出版年： 2025
文集名： 25th International Conference and Exhibition of the European Society for Precision Engineering and Nanotechnology
第25届欧洲精密工程与纳米技术学会国际会议暨展览会
会议名： 25th International Conference and Exhibition of the European Society for Precision Engineering and Nanotechnology
第25届欧洲精密工程与纳米技术学会国际会议暨展览会
届 次： 25th
摘 要： Porous aerostatic bearings commonly consist of a porous restrictor joined to a bearing body with adhesive. Porous graphite is a typical material used for the porous restrictors. Material properties of graphite may vary significantly between manufacturing batches influencing the performance of the bearing. Additive manufacturing methods for porous metal for aerostatic bearings have been suggested as a potential method for manufacturing restrictors with defined permeability. The critical parameter values have not been disclosed, and the repeatability of the manufacturing process has not been studied. This study investigates the suitable parameters for the manufacturing of stainless steel porous aerostatic bearing restrictors with laser-based powder bed fusion of metals (PBF-LB/M) additive manufacturing method. The controlled parameter was the distance between laser scan lines. The effect of hatch spacing parameter, turning, and grinding on the permeability of the porous material was experimentally investigated. The results verify that the manufacturing method is suitable for controlling the permeability of the restrictor to a sufficient level. The results enable the selection of more suitable parameters for manufacturing porous aerostatic bearing restrictors.

多孔气动轴承通常由粘合剂连接的多孔限流器与轴承体组成。多孔石墨是制造多孔限流器常用的典型材料，其材料性能在不同生产批次之间可能存在显著差异，从而影响轴承的性能。针对气动轴承用多孔金属，已提出采用增材制造方法来制造具有特定渗透性的限流器，但目前尚未公布关键参数值，也未对制造工艺的重复性进行研究。本研究探讨了利用激光粉末床熔融（PBF-LB/M）增材制造技术制造不锈钢多孔气动轴承限流器时的适宜工艺参数。控制参数为激光扫描线之间的距离。通过实验研究了层间间距、车削和磨削对多孔材料渗透率的影响。结果表明，该制造方法能够有效控制限流器的渗透性至足够水平。这些结果有助于选择更适合制造多孔气动轴承限位器的参数。
中文内容为网络AI翻译，专业术语未必准确，仅供参考。

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