Martyushev Nikita V, Kozlov Victor N, Qi Mengxu, Tynchenko Vadim S, Kononenko Roman V, Konyukhov Vladimir Yu, Valuev Denis V
Department of Materials Science, Tomsk Polytechnic University, 634050 Tomsk, Russia.
Department of Mechanical Engineering, Tomsk Polytechnic University, 30, Lenin Str., 634050 Tomsk, Russia.
Materials (Basel). 2023 Jun 22;16(13):4529. doi: 10.3390/ma16134529.
The aim of this study was to investigate cutting force when milling 40 × 13 stainless steel samples obtained via electron-beam surfacing. The samples were obtained by surfacing the wire made from the martensitic 40 × 13 stainless steel. The microstructure of the samples and the hardness are discussed in the present study. Emphasis is placed on the study of cutting forces when handling the samples. The structure of the samples obtained by electron-beam surfacing consisted of tempered martensite. The average hardness of the samples was similar to the hardness obtained after quenching and tempering the samples-576 HV for horizontally printed workpieces and 525 HV for vertically printed workpieces. High-speed milling, high-efficiency milling, and conventional milling have been proven to be suitable for handling such workpieces. This study shows that an increase in milling width leads to a gradual decrease in specific cutting force. As the milling depth increases, the specific cutting force decreases intensively at first but then more slowly with time. Machining the workpieces made of the martensitic stainless steel and produced by electron-beam surfacing requires the use of purely carbide mills with a diameter of at least 12 mm. Using a high-speed steel as a tool material results in the rapid failure of the tool. The cutting conditions during the investigation allowed for a decrease in the temperature of the cutting edge, cutting force, and the low-rigid end mill bending. Therefore, this study has made it possible to select modes that allow for a reduction in the vibration of the lathe-fixture-tool-part system.
本研究的目的是调查铣削通过电子束堆焊获得的40×13不锈钢样品时的切削力。这些样品是通过堆焊由马氏体40×13不锈钢制成的焊丝获得的。本研究讨论了样品的微观结构和硬度。重点在于研究处理样品时的切削力。通过电子束堆焊获得的样品结构由回火马氏体组成。样品的平均硬度与对样品进行淬火和回火后获得的硬度相似——水平打印工件为576 HV，垂直打印工件为525 HV。高速铣削、高效铣削和传统铣削已被证明适用于处理此类工件。本研究表明，铣削宽度的增加会导致比切削力逐渐降低。随着铣削深度的增加，比切削力起初会急剧下降，但随后随时间下降得更慢。加工由马氏体不锈钢制成并通过电子束堆焊生产的工件需要使用直径至少为12 mm的纯硬质合金铣刀。使用高速钢作为刀具材料会导致刀具迅速失效。研究期间的切削条件有助于降低切削刃温度、切削力以及低刚性立铣刀的弯曲。因此，本研究使得选择能够减少车床-夹具-刀具-工件系统振动的加工方式成为可能。
