Uncoated Tools Research Articles

"Tool Optimization for Matrix Composite Turning using Coated and Uncoated Cutting Tools "

Industries usually want to make a profit; this includes everything from materials to equipment to deep-cutting tools to work materials, and one product that fits the bill is metal matrix composite. Due to its low cost, metal matrix composites are increasingly being used more and more in a variety of industries, including aerospace and automotive. However, because of their anisotropic and non-homogeneous structure, as well as the high abrasiveness of their reinforcing elements, metal matrix composite materials are difficult to machine. Even so, these industries are compelled to move with MMC because damage is frequently introduced into the work piece as well as very quick wear development in the cutting tool. When milling MMC, the cutting tool is said to be the most important component. A good cutting tool that doesn't break while milling MMC will undoubtedly produce good results and find widespread application. Although cutting speed has been found to be more efficient, the wear rate of the cutting tool significantly dropped as cutting parameters like feed and depth of cut were increased. High cutting speeds caused tool inserts to break suddenly. Tool life has been greatly increased using coated carbide tools. Compared to uncoated tools, coated tools produce better outcomes. Consequently, this research highlights a crucial feature in areas like optimization and design. Using coated and uncoated tools, Minitab software is used to analyze the tool's break even point during turning operations on Metal matrix composites while comparing the graph of the material removal rate in MMC.

Progression of galling during punching of AA5754 Al sheets with DLC-coated and uncoated steel tools

Galling is a commonly observed type of sliding contact-induced damage that occurs as a result of material transfer from the aluminum alloys to the tool surfaces during forming and shaping of aluminum sheets. Progression of galling on uncoated AISI M2 steel tools and tools coated by non-hydrogenated diamond-like carbon (NH-DLC) with amorphous carbon (a-C) structure was investigated during the punching of AA5754-O sheets. Experiments were done either by lubricating aluminum sheets with mineral oil-based lubricant (LUB1), a method commonly used in industry, or by lubricating both the sheet and the punch prior to the initial punching stroke (LUB2). Galling rates were determined using the galling volume per punching stroke (between 20th and 125th strokes) measured using white light interferometry (WLI). Galling rates were lower for LUB2 punching compared to LUB1. In punching with NH-DLC-coated tools using LUB1, the coating was removed from the punch surface after 30 strokes, whereas for LUB2 punching, a negligible amount of aluminum transfer was detected by scanning electron microscopy (SEM) and WLI after 500 strokes, and the coating remained intact.

Traditional machining of Austempered ductile iron (ADI): A review

Machining is one of the important fabrication process. Austempered Ductile Iron (ADI) has 10% less weight than Steel, good impact strength, up to 40% less cost than hardened steel forgings, better wear resistance than case hardened steels, excellent resistance to crack propagation etc. Although the above properties are advantageous, it has been assumed to be un-machinable by many manufacturers. This is mainly because of its high hardness values. ADI can be used for different automotive components like constant velocity joint, truck hub etc. The addition of alloying elements increases the hardenability of ADI and decreases the tool life while machining. The main problem faced while conventional machining of ADI is strain induced transformation which significantly reduces the life of tool.This paper deals with need for Austempered Ductile Iron, various grades of ADI, literature review related to machining response to different conventional machining process namely Turning, Milling and Drilling. The different input process parameters considered are cutting speed, depth of cut, machining response for different tool materials and tool geometry, with cutting force, surface finish being the output process parameter. Different strategies have been tried by various authors, viz., Machining prior to heat treatment, partial machining before and finishing after heat treatment and post heat treatment machining. Ceramic inserts, PVD coated and uncoated tools, whisker reinforced tools are tried for different machining process for this material.

Cutting velocity influenced machinability of Monel 400 by coated tool

ABSTRACT Cutting tool performance plays a key role in various machining sectors because of its significant impact on production cost, product quality, and cutting tool life. A comprehensive evaluation of machinability characteristics offered a better way of selecting the proper cutting tool and cutting velocity to enhance the product quality. To establish a relationship between variation in medium ranges of cutting velocity to temperature, force, surface finish, and chip morphology affect the machining of Monel alloy 400, a hard-to-machine material, determining coated TiAlN carbide cutting tool performance. This work investigates the comparative cutting performance of tungsten carbide cutting inserts (uncoated and TiAlN coated) during the turning of Monel alloy 400 under dry condition at varying cutting velocities. Cutting force, cutting temperature, surface quality parameter, and chip morphology have been determined to correlate with tool wear for varied cutting velocity to reason out cutting tool performance. EDS analysis on the worn tool was investigated to identify the tool’s wear-related mechanisms under various cutting conditions. Coated TiAlN tools have a lower cutting zone temperature and cutting force than uncoated tools, which leads to better surface quality and less insert wear with cutting velocity.

Method for the Estimation of Wear Resistance Curves in Sheet Metal Forming with Uncoated Tools

The wear resistance diagram (WRD) is a useful tool for quantitatively estimating the life span of a tribological system in sheet metal forming at different load levels. However, the WRD derived from the authors’ previous research consists merely of scattered points, which make it difficult to reliably estimate the life span and its uncertainties at all load levels. Therefore, a wear resistance curve (WRC) that encompasses the life spans of all load levels is required for a broader scope of application of wear resistance estimation. In this paper, different models for the estimation of the S-N curve describing the fatigue behavior are tested to investigate their applicability in the estimation of wear resistance curves (WRC) in sheet metal forming. WRDs of different tribological systems are investigated and the results of curve fitting are evaluated. Besides the median of the estimated life spans, the WRCs of different confidence levels are also derived quantile calculation to estimate the load dependent uncertainties of tool life spans. Moreover, due to the time-consuming experiments to determine tool life, it is necessary to discuss possibilities for achieving a satisfactory estimation with the smallest possible number of tests. Therefore, the minimal number of tests and the suitable load levels for a satisfactory estimation will be discussed. After the study, several findings have been obtained:Compared to other models, Hwang and Han’s model for estimating fatigue life of composite material shows good applicability and the highest accuracy in estimating the WRC of uncoated tools.In terms of damage development, the fatigue damage of the composite material and the damage caused by wear on uncoated tools have similarities, which explains the applicability of Hwang and Han’s model for the estimation of WRC.Both higher and lower life wear data are the prerequisite for satisfactory wear estimation.

Surface Integrity Study of Ti-Alloy using Optimal Cutting Speed

Ti-alloy represents a significant metal portion of aircraft structural and engine components for high reliability. Surface integrity is one of the most relevant parameters used for evaluating the quality of finish machined surfaces. The residual stress and surface alteration with each layer and depth of work hardening by machining Ti-alloy are critical due to safety and sustainability concerns. Residual stresses, white layers well microstructural alterations can be figured out to improve surface qualities of end products. Many parameters such as cutting speed, feed rate, depth of cut affect the machined surface quality particularly surface fisnish. This article provides details of lathe turning for investigation of surface roughness for varying cutting parameters. An attempt has been made to search for best ranges of cutting regimes that could produce best surface roughness for machining Ti-6Al-4V alloy using uncoated cutting tool. Taylor-Hobson device is used to measure the surface roughness on the machined workpieces. In this project three series of experimentaions were carried out and a total of 16 steps of operations in each series are performed for determining the surface roughness. Real life experimental investigation has allowed to express the results in graphical form (using tabulated data) that has suggested best ranges of cutting regimes (parameters) for obtaining the best ranges of surface roughness for machining Ti-6Al-4V using uncoated carbide tool. The work has indicated to investigate the science of bulk flow, particularly the plastic deformation, for difficult to machine materials, at a much higher temperature. Behaviour of cutting tool materials for high speed cutting is another isuue to develop.

Comparative performance evaluation between uncoated and TiAlN + AlCrN coated carbide tools in hard turning of AISI H11 steel

Cutting tools, such as ceramic, cubic boron nitride, and polycrystalline diamond, are normally preferred to machine hardened hot work steel materials which are exclusively demanded in mould and die-making industries. However, such tool materials are very costly. If carbide tools with proper coatings will be used within a particular machining range, comparative tool life can be achieved with lesser cost in hard machining. The present experimental work is based on the comparative assessment among new generation TiAlN + AlCrN coated and traditional uncoated carbide tools concerning tool life, tool flank wear, cutting temperature, cutting force, and surface integrity in dry hard turning of AISI H11 steel. The experiments with 16 trials are performed according to the L16orthogonal array by considering various machining parameters that include cutting speed, depth of cut, and feed. At last, with the measured tool life and as per Gilbert's economic approach, distinctive cost analysis has been implemented to demonstrate the cost-effectiveness of coated carbide tools in hard turning. From the experimental results, a promising machining performance is noticed for TiAlN + AlCrN coated carbide inserts in terms of all machining attributes compared to uncoated carbide inserts due to superior wear resistance, and surface hardness as well as strength of coating material. In summary, the multilayer TiAlN + AlCrN coated carbide tool offers significant cost savings (Rs. 12.82 in Indian currency), with a 9% reduction in production costs in comparison with hard turning via. uncoated insert (Rs. 14).

Studying the Effect of un Coated and Multilayer Coated Tools on Cutting Temperature in Turning Operation

The present work studies three variables (cutting velocity, feed rate, and cut depth) on hard turning cutting temperature of uncoated and multilayer-coated carbide (TiN, TiN/TiCN, TiN /Al2O3/ TiCN) inserts are used in AISI 1045 alloy steel. The tool's temperature was measured simultaneously, measuring the temperature of the tool-chip interface using infrared radiation (IR) pyrometer in this investigation. This study investigated the performance of four distinct coated and uncoated PVD and CVD tools during turning operations. Four cutting speeds (56, 88, 112, 141) m/min, four feed rates (0.065, 0.08, 0.16, 0.228) mm/rev., in the experiments, a constant cutting depth of (1) mm was used. The results also show that Coarse cutting tools have a lower tool temperature than uncoated ones. In comparison to uncoated and other coated tools, the three-layer (TiN/ Al2O3/ TiCN) coating is especially effective in a range of (32% to 39%) than uncoated inserts at various cutting velocity and constant feed rates, with varying feed rates and consistent cutting velocity and lower by approximately( 34% to 40%) than uncoated inserts.

Machinability performance investigation in CNC turning of Ti–6Al–4V alloy: Dry versus iron-aluminium oil coupled MQL machining comparison

Ti–6Al–4V is the largest useable titanium grade alloy in various engineering components due to its superior inherent properties like high strength to weight ratio, highly corrosive resistance, ability to withstand high temperature, etc. But machining of this alloy is found to be challenging because of having lesser thermal conductivity, highly chemical sensible, more sensitivity in work hardening and low young's modulus. However, the current study offers the use of novel and environment pleasant lubricants like iron aluminium oil with minimum quantity lubrication (MQL) concept to machine this alloy using a low budget hard tool (uncoated carbide) and the performance was compared with dry machining. Severe abrasion, adhesion, diffusion, and chipping were the main cause of tool failure in both cooling strategies. The tool life in MQL was traced to be 280% greater than the dry condition at the same turning parameters. Compared to dry turning, lower tool vibration and superior surface quality were obtained in MQL. The MQL assisted turning exhibited 12.38% lower costs than dry. Overall, with the use of an uncoated carbide tool, the turning of Ti–6Al–4V alloy in MQL was found to be more precise and more economical than dry and recommended for mass production works.

A novel approach to cutting tool edge design based on initial wear stage

Cutting tool geometries play an important role in tool performance, material flow, cutting force, and cutting temperature distribution. The most common edge geometries of commercial tools are hone, chamfer, and chamfer with a hone. A novel method for designing tool edge geometry that combines experimental and simulation results is investigated in this paper. An uncoated carbide tool was used to orthogonally cut AISI 1045 and AISI 4140 steel. By observing how the tool geometry changed during the machining process with white light interferometry, a new tool wear geometry model could be proposed. Furthermore, temperature and stress distribution modeling were carried out with Finite Element Analysis (FEA) based on the newly designed tool geometry under various cutting parameters. A comparison of the machining results of the new and conventional tool geometries has confirmed that the newly designed tool is capable of achieving a lower wear rate, thereby extending the tool life.

A COMPREHENSIVE METHODOLOGY FOR TESTING HARD LAYERS OF CUTTING TOOL PROPERTIES IN ORTHOGONAL TURNING

Thin hard layers deposited on cutting tools known as ‘coatings’ serve as a protective barrier against abrasion and adhesion wear, while also protecting against thermal and chemical processes that deteriorate the cutting performance of the tool. Coating properties including non-zero thickness, surface roughness, and chemical composition affect the cutting process significantly when compared to uncoated tools. The mechanical properties of coatings can be compared using specific, standardized measurement methods that provide indirect information about the behavior of the coating in a given application of the machining. In practice, it is necessary to evaluate the cutting ability by experimental testing of a given combination of cutting tool, workpiece, cutting conditions and cutting environment. This article discusses various experimental procedures that help to recognize the suitability of a coating for a particular application. These procedures can be applied alone, or in combination, as required by the cutting process. Each of these procedures have associated advantages and disadvantages, as described in this paper.

Wear Resistance, Patterns of Wear and Plastic Properties of Cr,Mo-(Cr,Mo,)N-(Cr,Mo,Al)N Composite Coating with a Nanolayer Structure

This paper discusses the results of studies focused on the wear resistance, patterns of wear and plastic properties of Cr,Mo-(Cr,Mo,)N-(Cr,Mo,Al)N coating, containing 20 at.% Mo. The coating had a nanolayer structure with a modulation period λ = 50 nm. The studies revealed the hardness, fracture resistance in scratch testing, as well as elemental and phase composition of the coating. The studies of the tool life of carbide cutting tools with the Cr,Mo-(Cr,Mo,)N-(Cr,Mo,Al)N coating proved their longer tool life compared to that of uncoated tools and tools with the reference Cr-(Cr,Al)N coating of equal thickness and equal content of aluminum (Al). The studies included the comparison of the tools coated with Cr,Mo-(Cr,Mo,)N-(Cr,Mo,Al)N and Cr-(Cr,Al)N. The experiments focused on the specific features of the coating nanostructure and were conducted using a transmission electron microscope (TEM), revealing the different mechanisms of fracture. The penetration of particles of the material being machined between nanolayers of the coating results in interlayer delamination. When exposed to a moving flow of the material being machined, plastic deformation (bending) of the coating nanolayers occurs. The diffusion of iron into the coating (up to 200 nm) and diffusion of Cr and Mo into the cut material to a depth of up to 250 nm are observed. The presented information can help in the design of metal cutting tools and the choice of coatings for them.

Modelling and Optimization of Machining of Ti-6Al-4V Titanium Alloy Using Machine Learning and Design of Experiments Methods

Ti-6Al-4V titanium is considered a difficult-to-cut material used in critical applications in the aerospace industry requiring high reliability levels. An appropriate selection of cutting conditions can improve the machinability of this alloy and the surface integrity of the machined surface, including the generation of compressive residual stresses. In this paper, orthogonal cutting tests of Ti-6Al-4V titanium were performed using coated and uncoated tungsten carbide tools. Suitable design of experiments (DOE) was used to investigate the influence of the cutting conditions (cutting speed Vc, uncut chip thickness h, tool rake angle γn, and the cutting edge radius rn) on the forces, chip compression ratio, and residual stresses. Due to the time consumed and the high cost of the residual stress measurements, they were only measured for selected cutting conditions of the DOE. Then, the machine learning method based on mathematical regression analysis was applied to predict the residual stresses for other cutting conditions of the DOE. Finally, the optimal cutting conditions that minimize the machining outcomes were determined. The results showed that when increasing the compressive residual stresses at the machined surface by 40%, the rake angle should be increased from negative (−6°) to positive (5°), the cutting edge radius should be doubled (from 16 µm to 30 µm), and the cutting speed should be reduced by 67% (from 60 to 20 m/min).

Experimental investigation of hole quality in drilling of additive manufacturing Ti6Al4V parts produced by hole features

Although additive manufacturing (AM) applications are on the rise, machining processes such as drilling are required to complete the manufacturing process successfully. This study envisaged that after the Ti6Al4V alloy designed as a pre-hole feature is produced by the Selective Laser Melting (SLM) method, there will be significant advantages to drilling the holes the desired diameter size will bring to the production costs. Hole accuracy, hole surface roughness, cutting forces, cutting tool wear, and chip form were determined as evaluation criteria. Their relations with drilling parameters were evaluated. After drilling, the deviation values from the average diameter, circularity, and cylindricity in the AM holes improved about 98%. The increases in cutting forces in uncoated twist drills negatively affected the hole quality. The increased cutting forces increased deviation values from diameter, cylindricity, and circularity. Better values were obtained in coated twist drills. The lowest surface roughness (0.58 μm) was recorded at 50 m/min cutting speed and 0.15 mm/rev feed in coated drills. Minimum deviation from cylindricality and circularity were obtained in uncoated drills. It was determined that the diameter deviation of the coated tool was 76% less than the uncoated tool. With the study, it has been revealed that it may be advantageous to drill AM parts produced with unsupported front holes instead of drilling a full hole. Considering the smaller chip cross-section in the drilling process, the cutting speed and feed values could be increased to increase the drilling efficiency. In addition, in the study, it was determined that the proper drilling of the pre-drilled hole has a sensitive relationship with the fact that the pre-drilled hole centre and the drill centre come to the same point during drilling.

Cutting Performance of Multicomponent AlTiZrN-Coated Cemented Carbide (YG8) Tools during Milling of High-Chromium Cast Iron

In order to improve the cutting performance of cemented-carbide (YG8) tools during the milling of high-chromium cast iron, AlTiZrN coating was deposited on the surface of YG8 samples and milling tools by physical vapor deposition (PVD) technology. The micromorphology and mechanical properties of the coating were studied by the experimental method, and the cutting performance of the coated tools was tested by a milling machining center. The results show that the AlTiZrN coating presents the face-centered cubic (fcc) structure of TiN. The average microhardness is 3887 HV0.05. The bonding strength between the coating and the substrate meets the standard HF3 and is up to the requirements. The coefficient of friction (COF) of the coating is about 0.32. AlTiZrN coating can significantly improve the life of cemented-carbide tools. At cutting speeds of 85, 105, and 125 mm/min, the lives of the AlTiZrN-coated tools increased by 20.7%, 22.4%, and 35.2%, respectively, compared with the uncoated tools. Under the same cutting condition, AlTiZrN-coated tools have better cutting and chip-breaking performance than uncoated tools. With the increase in cutting speed, the workpiece chips produced by AlTiZrN-coated tools are smaller and more uniform, and the scratches on the machined surface are smoother. Therefore, at higher cutting speeds, AlTiZrN-coated tools have more advantages in life and cutting performance than that of uncoated tools. During the cutting process, the wear mechanisms of the AlTiZrN-coated tools mainly included friction, oxidation, and bonding, while oxidation and bonding wear were the main wear mechanisms in the later stage of wear.

INVESTIGATION OF MACHINABILITY PERFORMANCE IN TURNING OF Ti–6Al–4V ELI ALLOY USING FIREFLY ALGORITHM AND GRNN APPROACHES

Ti–6Al–4V ELI alloy is one of the most familiar materials for orthopedic implants, aeronautical parts, marine components, oil and gas production equipment, and cryogenic vessel applications. Therefore, its appropriate quality of finishing is highly essential for these applications. But the characteristics like lower modulus of elasticity, lesser thermal conductivity, and high chemical sensitivity placed it in the categories of difficult-to-cut metal alloys. Also, tooling cost is one of the prime issues in the machining of this alloy. Therefore, this research is more inclined to use a low-budget uncoated carbide tool in turning the Ti–6Al–4V ELI alloy. Also, the selection of suitable levels of machining parameters is highly indispensable to get the appropriate surface finish with a low tooling cost. So, the [Formula: see text] experimental design is utilized to check the performances of the uncoated carbide tool in the turning tests. The performance indexes like surface roughness (Ra), flank wear of tool (VBc), and material removal rate (MRR) are measured and studied with the help of surface plots and interaction plots. Further, the Firefly Algorithm optimization is employed to find the optimal cutting parameters and cutting response values. The local optimal values of the input parameters a, f, and Vc are estimated as 0.3241[Formula: see text]mm, 0.0893[Formula: see text]mm/rev, and 82.41[Formula: see text]m/min, respectively. Similarly, the global optimal values for the responses Ra, VBc, and MRR are reported as 0.6321[Formula: see text]μm, 0.09253[Formula: see text]mm, and 24.61[Formula: see text]g/min, individually. Additionally, to predict the responses, Generalized Regression Neural Network (GRNN) modeling is employed and the average absolute error for each response is noticed to be less than 1%. Therefore, the GRNN modeling tool is strongly recommended for various machining applications.

Effects of tool coating and tool wear on the surface quality and flexural strength of slotted CFRP

Machining of carbon fibre reinforced polymer (CFRP) is abrasive and causes significant tool wear. The effect of tool wear on static flexural strength is investigated, using edge trimming with uncoated carbide and chemical vapour deposition (CVD) diamond coated burr style tools. Edge rounding (ER) criteria along with flank wear are used to observe tool degradation with ER shown to preferentially wear allowing the tool to become cyclically sharper and duller, corresponding to fluctuating dynamometer readings, a novelty for CFRP machining. Areal surface metrics degraded for an uncoated tool due to changes in cutting mechanism, whilst for up to 16.2 m of linear traverse, the coated tool showed limited changes. Tool wear, caused by edge trimming 7.2 m of CFRP, using an uncoated carbide tool, provided a flexural strength reduction of up to 10.5 %, directly linking tool wear to reduced mechanical strength.

Effects of Al content in TiAlN coatings on tool wear and cutting temperature during dry machining IN718

Cutting temperature affects TiAlN tool wear behaviors during machining IN718. However, the effects of Al content on wear behavior and cutting temperature are not clear. In this research, the Ti0.55Al0.45N and Ti0.41Al0.59N tools with the sole variable of Al contents were selected in dry cutting IN718 compared that with uncoated tools. The effects of Al content on TiAlN coating antifriction and thermal barrier effects were mutually analyzed. The tool tribological behaviors were characterized in tool wear initial and terminal stages, respectively. The Ti0.41Al0.59N tools exhibited better antifriction, smaller thermal barrier effect and longer tool life than that uncoated and Ti0.55Al0.45N tool did. The research results could guide for the reasonable selection of TiAlN tools in high-speed dry machining IN 718.

The Effectiveness of Diamond-like Carbon a-C:H:Si Coatings in Increasing the Cutting Capability of Radius End Mills When Machining Heat-Resistant Nickel Alloys

The main purpose of this paper was to study the efficiency of using diamond-like carbon (DLC) coatings based on a-C:H:Si with a pre-formed CrAlSiN sublayer to increase the cutting ability of ball end mills made of KFM-39 cemented carbide at a speed of 150–250 m/min in milling aircraft-grade Inconel 718, and to assess the DLC coating effect on the quality of the machined surface. DLC coating performance was quantified against uncoated carbide ball end mills and the proven TiN–AlN–TiAlN gradient multilayer coating at elevated temperatures measured by the natural thermocouple method. The temperature near the cutting edge is the factor determining the wear intensity in the tool contact surfaces in milling hard-to-machine nickel alloys to the greatest extent. Thermo-EMF (electromotive force) was recorded and converted into temperatures by calibration charts. The behavior of CrAlSiN–DLC and TiN–AlN–TiAlN coatings was compared with the results of high-temperature tribological tests on a ball-on-disc friction machine. For the CrAlSiN–DLC coating at cutting speeds of 150 and 200 m/min (<650 °C), the milling time until critical flank face wear (0.4 mm) was more than 67 and 50 min, respectively (1.4–1.5 times longer than an uncoated tool and about 1.3 times longer than the TiN–AlN–TiAlN coating). The CrAlSiN–DLC coating was characterized by a minimum adhesion amount.

Impact of Deposition of the (TiBx/TiSiyCz) x3 Multilayer on M2 HSS on the Cutting Force Components and Temperature Generated in the Machined Area during the Milling of 316L Steel.

High-speed steel (HSS) tools account for 20 percent of the cutting tools materials’ global market. This is due to both their significant toughness and resistance to cracking, compared to cemented carbides. Covering steel tools with hard coatings clearly improves their mechanical properties, wear resistance, and significantly increases their durability. Physical vapor deposition methods are preferred for coating metal substrates, as they allow low temperature deposition. The most widely deposited coating materials are carbides, nitrides, and borides. They are combined with softer ones in the multilayer structure to promote increased resistance to cracking and delamination in comparison to monolayered structures. In this paper, the M2 steel end mills were coated by (TiBx/TiSiyCz) x3 multilayer by the pulsed laser deposition method. Coated and uncoated tools were tested in the cylindrical down milling of AISI 316L steel. Components of the cutting force and temperature generated in the machined area during dry milling were measured under two variants of operating conditions: V1 and V2. Tool wear mechanism was examined using scanning electron microscopy (SEM), accompanied by EDS analysis of worn areas. It was found that milling with higher speed (variant V2) is accompanied by lower cutting force components and a lower temperature generated in cutting area. The presence of the coating allowed lower cutting forces and temperature in the case of variant V1. The temperature measured during milling did not exceed 200 °C. The SEM observation of the edges of cutting tools indicated that the main mechanism of wear for both types of tools was abrasion. The built-up edge formation was observed in the case of tools tested at the V1 cutting parameters variant. It was assumed that it was the reason for higher cutting forces measured during milling according to this variant. The chemical composition of built-up edges was different for coated and uncoated tools. Tribo-chemical reactions were responsible for the reduction of the cutting force and temperature components observed during milling with a coated tool at V1 variant. Boron and titanium were the elements of the coating that enabled the tribo-oxidation reactions thanks to which friction was reduced. Our results show that this beneficial effect occurs with (TiBx/TiSiyCz) x3 coated tools, but can easily be lost with inadequately selected cutting parameters.