Raw pine wood processing and especially its mechanical processing constitute a significant share among technological operations leading to obtaining a finished product. Stable implementation of machining operations, ensuring long-term repeatable processing results depends on many factors, such as quality and invariability of raw material, technical condition of technological equipment, adopted parameters of work, qualifications and experience of operators, as well as preparation and properties of the machining tools used. It seems that the greatest potential in the search for opportunities to increase the efficiency of machining operations has the modification of machining tools used in it. This paper presents the results of research work aimed at determining how the life of cutting tools used in planing operations of wet pine wood is affected by the application of chromium aluminum nitride (AlCrN) coating to planar industrial planing knives in the process of physical vapour deposition. For this purpose operational tests were carried out under production conditions in a medium-sized wood processing company. The study compares the effective working time, rounding radius, the profile along the knife (size of worn edge displacement, wear area of the cutting edge), selected texture parameters of the planar industrial planing knife rake face and visual analyses of cutting edge condition of AlCrN-coated planar knives and unmodified ones. The obtained experimental results showed the possibility of increasing the life of AlCrN-coated knives up to 154% compared to the results obtained with uncoated ones. The proposed modification of the operational features of the knives does not involve any changes in the technological process of planing, does not require any interference with the machining station nor its parameters, therefore enabling rapid and easy implementation into industrial practice.

松木原木加工，尤其是其机械加工在导致最终产品的技术操作中占有很大份额。加工操作的稳定实施，确保长期可重复的加工结果取决于许多因素，例如原材料的质量和不变性，工艺设备的技术条件，采用的工作参数，操作员的资格和经验以及准备和性能所使用的加工工具。在寻找机会来提高机加工效率方面，最大的潜力似乎在于对其中使用的机加工工具进行了修改。本文介绍了旨在确定在湿式松木刨光操作中使用的切削工具寿命如何受到物理气相沉积过程中在平面工业刨刀上施加氮化铝铬（AlCrN）涂层的影响的研究结果。 。为此，在一家中型木材加工公司的生产条件下进行了操作测试。研究比较了有效工作时间，倒圆半径，沿刀的轮廓（磨损边缘位移的大小，切削刃的磨损面积），平面工业刨刀前刀面的选定织构参数以及切削刃状况的视觉分析。涂有AlCrN的平面刀和未经修饰的平面刀。获得的实验结果表明，与未涂覆的相比，可以将AlCrN涂覆的刀具的寿命提高154％。提议的对刀的操作特征的修改不涉及刨削工艺过程的任何变化，不需要干扰加工工位或其参数，因此可以快速，轻松地实施到工业实践中。