Raman Spectroscopy in the investigations of indexable knives for woodbased materials machining

Raman spectroscopy for examination of WC-Co tools in wood-base machining. An attempt is undertaken to apply Raman Spectroscopy for examination of WC-Co tools for wood-base machining. The virgin tools were compared with those implanted with nitrogen, modified by electron beam and plasma beam pulses. The preliminary results suggest a possibility of applying this method for fast, non-destructive analysis of phase composition and phase changes in the microstructure of the investigated tools.Spektroskopia Ramana w badaniach narzędzi WC-Co wykorzystywanych w obróbce materiałów drzewnych. W pracy podjęto próbę zastosowania Spektroskopii Ramana w badaniach wymiennych noży WC-Co, stosowanych do obróbki materiałów drewnopochodnych. Przeanalizowano narzędzia niezmodyfikowane, implantowane jonami azotu, poddane działaniu impulsów elektronowych i plazmowych. Wstępne wyniki sugerują możliwość zastosowania tej metody do szybkiej i nieniszczącej analizy składu fazowego i zmian fazowych w mikrostrukturze badanych narzędzi

Influence of the ion implantation of nitrogen and selected metals on the lifetime of WC-Co indexable knives during MDF machining

Influence of the ion implantation of nitrogen and selected metals on the lifetime of WC-Co indexable knives during MDF machining. The paper presents the results of durability tests for WC-Co indexable knives during the machining of MDF. The knives were implanted with nitrogen, zirconium, molybdenum and tin, using MEVVA type implanter with non-mass separated beam. Additionally, the Monte Carlo simulation results of the main parameters of the depth profiles of the implanted elements are presented in this paper. A higher correlation of tool life with the project range and range straggling than with the parameter of the peak volume dopant concentration was demonstrated.Wpływ implantacji jonów azotu i jonów wybranych metali na trwałość wymiennych noży WC-Co podczas obróbki płyt MDF. W artykule przedstawiono wyniki testów trwałościowych wymiennych noży WC-Co podczas obróbki płyt MDF. Noże były implantowane jonami azotu, cyrkonu, molibdenu i cyny, przy użyciu implantatora typu MEVVA bez separacji masowej. Ponadto, w artykule zamieszczono wyniki modelowania profili głębokościowych implantowanych pierwiastków, uzyskanych przy pomocy programu opartego o metodę Monte Carlo. Wykazano wyższe zależności korelacyjne trwałości ostrza z wartościami zasięgu rzutowanego i rozrzutu zasięgu niż z wartościami maksymalnej koncentracji objętościowej domieszki

Effect of Nitrogen Ion Implantation on the Tool Life Used in Particleboard CNC Drilling

The paper presents the effect of nitrogen ion implantation on the tool life of the tools commonly used in the furniture industry for drilling particleboards. Nitrogen ions with different accelerating voltages of 25, 40, 55, and 70 kV and a fluence of 5 × 1017 cm−2 were implanted into the surface of commercially available high-speed steel (HSS) drills, using the implanters without mass-separated ion beams. The tests were carried out in a computerized numerical control (CNC) machining center used in the furniture industry. Based on the measurements of the direct tool wear indicator (W), the drill wear curves were determined and the relative tool life index, standard deviation, coefficient of variation, and the implantation quality index of tool life were calculated. The studies have shown that the modification of the drill surface layer by the nitrogen ion implantation process increases the tool life. The obtained results allow the research to be the continued in a wider scope

Influence of Ion Implantation on the Wear and Lifetime of Circular Saw Blades in Industrial Production of Wooden Door Frames

The paper presents the effect of nitrogen ion implantation on tool wear and tool life during the sawing of wood-based materials in the industrial production of door frames. The circular saw blades used in machining had WC-Co carbide teeth. Saw teeth were modified by ion implantation. The total implanted dose of nitrogen ions was 5 × 1017 cm−2 (2 × 2.5 × 1017 cm−2) and ions were implanted at 50 kV acceleration voltage. Tool wear testing was carried out under industrial production conditions for the door frames made of wood-based materials. The wear of circular saw teeth was evaluated under an optical microscope. Based on the tool’s wear and machining distance, a mathematical linear model of the non-treated and ion-implanted tools’ life was developed using the linear least squares method. The study showed less wear of the implanted circular saw blades and a significant increase in the estimated lifetime of modified tools compared to non-treated (control) tools. At the same time, activation of the surface of the implanted circular saw teeth was observed, manifested by an increase in adhesion and the appearance of the secondary structures on the WC-Co surface