Qualitative changes in the surface layer of metal-cutting tools with wear-resistant coating due to the application of environmentally safe lubricant technological environments

In this article shows the influence of lubricating-cooling technological means of plant and animal origin on increasing the durability of cutting tools made of high-speed steel Р6М5К5 with a wear-resistant TiN coating. Corrosion-resistant steel 12Х18Н10Т was used as the processed material. Increased durability was ensured by running in the cutting tool in an environment of environmentally friendly lubricating-cooling technological means. The running-in process was carried out in the temperature range of 200-400°C. The temperature in the cutting zone was measured using a natural thermocouple. To ensure the required temperature range, a special stand was developed that allows calibration of a natural thermocouple directly on a lathe. Durability tests of cutting tools were carried out in the modes recommended for processing stainless steels using a water-miscible 10% lubricating-cooling technological mean composition of the Аквафриз-6 brand. It was shown that running in the cutting tool in an environment of environmentally friendly lubricating-cooling technological means significantly affects the increase in the wear resistance of the cutting tool.
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