Ground Steel Research Articles

Studying the Influence of Dressing Parameters on the Surface Roughness when Conducting the External Grinding of SKD11 Steel

This study presents the results of a study on multi-objective optimization of internal cylindrical grinding of hardened SKD11 steel in order to find one objective function which satisfy minimum surface roughness, Ra. By this procedure, an optimum set of dressing parameters such as coarse dressing depth, number of coarse dressing, fine dressing depth, number of fine dressing, non-feeding dressing, and dressing feed speed will be found. Taguchi design methodology is accepted to find the optimum set of dressing parameters which can lead a condition of objective function as above mentioned. ANOVA is conducted based on experimental results to find the significance of each input parameter on the responses. The results reveal that the optimum value of surface roughness is 0.111 μm when using the optimum dressing parameters such as fine dressing depth at level of 2, number of fine dressing at level of 3, number of non-feeding dressing at level of 4, number of coarse dressing at level of 3, coarse dressing depth at level of 2, and dressing feed rate at level of 1.

Investigations on grain size characteristics in microstructure during grinding of maraging steel 3J33

Due to the nonlinear and tight coupling of the process parameters in grinding, the surface integrity of the parts is influenced by multiple factors. At present, most studies have macroscopically analyzed the effect of grinding force and heat caused by grinding parameters on surface morphology and mechanical property, while the investigation of dynamic evolution in the material microstructure during grinding and its influencing mechanism on the surface integrity is not yet fully understood. In this study, a novel microscopic grain size model comprehensively considering grinding temperature, heating rate and strain is proposed to investigate the phase transformation, surface hardness and roughness of maraging steel 3J33. The key factors affecting the change of the grain size are deeply studied and the model coefficients are calibrated by heat treatment and grinding experiments at first. Then the relationship between grain size and phase transformation is revealed based on the proposed model and the sensitivity of grain size to different process parameters is quantitatively analyzed. The surface integrity of the workpiece, such as hardness and roughness, is further investigated by comparing the variation of the grain size and phase transformation before and after the grinding process. The theoretical and experimental results show that large cutting depth and low workpiece speed are more beneficial to reduce the grain size. The phase transformation is strongly correlated with grain size and higher wheel speed is supposed to restrain the phase transformation of the material. Based on this analysis, the guideline of process optimization is provided for the grinding of maraging steel to obtain better surface integrity.

Characterization of Supplementary Cementitious Materials and Fibers to Be Implemented in High Temperature Concretes for Thermal Energy Storage (TES) Application

Six supplementary cementitious materials (SCMs) were identified to be incorporated in concrete exposed to high-temperature cycling conditions within the thermal energy storage literature. The selected SCMs are bauxite, chamotte, ground granulated blast furnace slag, iron silicate, silica fume, and steel slag. A microstructural characterization was carried out through an optical microscope, X-ray diffraction analysis, and FT-IR. Also, a pozzolanic test was performed to study the reaction of SCMs silico-aluminous components. The formation of calcium silica hydrate was observed in all SCMs pozzolanic test. Steel slag, iron silicate, and ground granulated blast furnace slag required further milling to enhance cement reaction. Moreover, the tensile strength of three fibers (polypropylene, steel, and glass fibers) was tested after exposure to an alkalinity environment at ambient temperature during one and three months. Results show an alkaline environment entails a tensile strength decrease in polypropylene and steel fibers, leading to corrosion in the later ones.

Relationship between Pressure and Output Parameters in Belt Grinding of Steels and Nickel Alloy.

Belt grinding of flat surfaces of typical parts made of steel and alloys, such as grooves, shoulders, ends, and long workpieces, is a good alternative to milling. Several factors can influence the belt grinding process of flat surfaces of metals, such as cutting speed and pressure. In this work, the importance of pressure in the belt grinding was investigated in terms of technological and experimental aspects. The grinding experiments were performed on structural alloy steel 30KhGSN2/30KhGSNA, structural carbon steel AISI 1045, corrosion-resistant and heat-resistant stainless steel AISI 321, and heat-resistant nickel alloy KHN77TYuR. The performance of the grinding belt was investigated in terms of surface roughness, material removal rate (MRR), grinding belt wear, performance index. Estimated indicators of the belt grinding process were developed: cutting ability; reduced cutting ability for belt grinding of steels and heat-resistant alloy. It was found that with an increase in pressure p, the surface roughness of the processed surface Ra decreased while the tool wear and MRR increased. With a decrease in plasticity and difficulty of machinability, the roughness, material removal rate, reduced cutting capacity (Performance index) , material removal decreased, and the tool wear increased. The obtained research results can be used by technologists when creating belt grinding operations for steels and alloys to ensure the required performance is met.

Research of the Process of Production of Steel Square Continuous Billets for Rolling Balls of Large Diameter

The paper investigates the technology of production of steel billets continuously cast billets for rolling balls of large diameter. In Kazakhstan, in connection with the development of new copper deposits such as Aktogay and Bozshakol, the need for large diameter steel grinding balls for primary ore processing has increased. The main problem in the operation of large diameter grinding balls is the tendency of the grinding media to break during operation. The authors of the work investigated the process of production of steel billets continuously cast billets with a cross section of 150 × 150 mm for rolling balls of large diameter (d 125 mm) in the PB LLP "KSP Steel", which showed that the breaking of grinding balls is initiated mainly by the presence of internal discontinuities (gas axial looseness) in continuously cast billets. Studies have shown that the technological scheme for the production of grinding balls with a diameter of 125 mm from continuously cast billets with a section of 150 × 150 mm, including steel smelting in an arc furnace with steel finishing on a ladle-furnace unit, deoxidation with aluminum and degassing in a ladle vacuum apparatus, casting steel in a closed jet on a continuous casting and further production of rolled stock on a rough rolling mill ensures the absence of internal discontinuities (gas bubbles, axial looseness) in the workpieces and ensures the production of high quality balls.

Industrial manufacturing linked to the mechanical and economic viewpoint of the mold steel grinding process using aluminum oxide wheel

Industrial manufacturing linked to the mechanical and economic viewpoint of the mold steel grinding process using aluminum oxide wheel

Structure and Properties of New Antifriction Composites Based on Tool Steel Grinding Waste

This article investigates the impact of manufacturing technology on the structure, mechanical, and tribological properties of new antifriction composite materials based on R6M5 high-speed tool steel grinding waste. The characteristics of the new composite’s structure formation and its impact on properties after use of the established technological modes, including grinding waste regeneration, were illustrated. It was demonstrated that such technology is capable of ensuring microheterogeneous structure. The material’s structure consists of the metal matrix based on R6M5 high-speed tool steel waste and uniformly distributed CaF2 solid lubricant in the steel matrix. As compared to known iron-based composites, this structure promotes a high degree of mechanical and tribological properties. During tribological tests, anti-seize thin films of 15–20 μm are formed on the contacting surfaces. These constantly renewable films contribute to the high antifriction properties of the composite under the studied friction conditions and provide a self-lubricating effect. Such films fully cover both the material’s surface and the counterface. The formation of antifriction films results in the self-lubrication mode. The findings of the study open up the possibility of predicting the friction behavior of a composite at high temperatures by selecting the initial metal grinding waste to ensure the appropriate level of properties. The extensive use of various alloy steel-based industrial grinding waste in the re-production cycle would significantly contribute to resolving the global environmental problem of protecting the environment from pollution.

Thermomechanical treatment of steel using severe plastic deformation and cryogenic cooling

The present study was devoted to the effect of severe plastic deformation implemented by the HPT method in a new design die at ambient and cryogenic temperatures on the microstructure and properties of AISI-316 austenitic stainless steel. The presented results demonstrate the favorable role of severe plastic deformation by the HPT method in increasing the degree of grain grinding of AISI-316 steel, which directly favorably affects the mechanical properties of the material.

Characterisation of Metal Debris in Grinding and Flotation Circuits

An extensive body of work exists on the impact of grinding media composition on media wear, valuable mineral surface chemistry and subsequent separation from gangue species. However, the literature is limited in describing what happens to metal (either tramp metal from upstream processes, or grinding media debris) in the grinding and flotation processes. This study aims at characterisation and deportment of metal debris within the grinding and flotation circuits of three Australian concentrators. The results show a remarkable range of “metallic” morphologies and sizes, with a considerable amount of metal debris circulating in the hydrocyclone/mill circuit while fine fractions proceed to downstream flotation. Chemical and mineralogical characterisation revealed notable metal debris contribution from upstream equipment such as loader teeth and high speed steel tools, coupled with mild steel grinding media. Surface chemistry and mineral association analysis suggest sulphide mineral oxidation at reactive metal debris surfaces, causing possible limitation of flotation performance and process economics.

FEM analyses on beam-to-column connection for a thin-walled cold-formed steel frame

The advantage of fast construction for thin-walled cold-formed steel ground floor structures is somehow lessened by the challenges the engineers encounter when designing the connections. The horizontal forces induced by the seismic motions and not only, represent a serious threat to flexible structures. The paper presents the results obtained from comparative FEM analyses of different types and layouts of beam-to-column connection in case of a thin-walled cold-formed steel frame. The obtained results were analysed and compared from the point of view of maximum vertical displacements of the beam free end, the load-displacement diagrams as well as the principal stresses. The objective was to obtain the most efficient type of connection that ensures the safe transfer of internal forces from the beam to the column.

Analysis of cutting forces during grinding of titanium alloy and corrosion-resistant steel by diamond, electrocorundum and cubic borine nitrid wheels

The object of research is the process of circular and surface grinding of titanium alloy and corrosion-resistant steel, namely, the cutting forces arising from mechanical processing. One of the most problematic areas in work is the selection of the required grinding modes, material and grinding wheel grain size. In the course of the experiment, we used samples of VT8 titanium alloy and 12Х18N9T steel, on which the grinding process was studied with wheels made of various materials (electrocorundum, cubic boron nitride (CBN), diamond). The values of the cutting forces Py and Pz were obtained in the latitude of permissible modes, which are most often used in circular and flat grinding, and can reach maximum values, respectively, Py=27 N, Pz=15.5 N. The data were obtained at a low wheel speed from electrocorundum, about 15 m/s and grain size 8. By reducing the grain size of the wheel, we get the effect of increasing the energy consumption of the grinding process, due to the increase in the values of the cutting forces. If we compare the cutting forces arising from grinding with different wheels, then the following can be noted. Compared to electrocorundum wheels, when using CBN wheels, the cutting forces are reduced by 20–25 %, and when grinding with diamond wheels (despite the high wear of the diamond wheel), the effect of cutting forces is reduced by 25–30 %. This is due to the fact that cutting conditions are the most favorable for diamond and CBN grains, which makes it possible to use more intense cutting conditions. The results of the study allow predicting the performance of the grinding wheel, reducing the energy consumption of production, and also adjusting the processing mode of the part to obtain the necessary quality indicators of the surface layer and the geometric dimensions of the part.

Bacteria fixing CO2 to enhance the volume stability of ground steel slag powder as a component of cement-based materials aiming at clean production

Steel slag is a by-product in the process of steel manufacture. It has caused huge environmental pressure. The use of steel slag as the admixture of cement-based materials is an effective way to enhance clean production. But the poor volume stability caused by dead burned lime and periclase in steel slag is a crucial factor restricting its utilization. Some research has shown that carbonization could convert dead burned lime and periclase into carbonate. But the carbonization rate and carbonization degree were low. The objective of this paper is to adopt Bacillus Mucilaginosus (BM) to absorb carbon dioxide to promote the carbonization of dead burned lime and periclase, thereby enhancing steel slag utilization in cement-based materials. The effects of BM on the carbonization rate and degree of dead burned lime and periclase were studied by conducting experiments; the influence of BM on the stability of steel slag mortar with different particle sizes was studied. The results show that BM can reduce the apparent activation energy of the carbonization reaction of dead burnt lime and periclase, and increase the reaction rate and maximum reactivity. MIP (Mercury Intrusion Porosimetry) analysis found that steel slag mortar specimen with BM had a lower porosity than that without BM. The autoclaved linear expansion rate of the steel slag mortar specimen with BM can meet standard requirements while that without BM cannot. It is indicated that the addition of BM can effectively promote the carbonization of dead burned lime and periclase in steel slag and solve the problem of poor volume stability of cement-based materials caused by steel slag. This research helps to improve the utilization of steel slag as an alternative binder to cement and alleviates the environmental pressure caused by the storage of waste steel slag.

Аналіз методів фінішного оброблення прецизійних кульок

Аналіз методів фінішного оброблення прецизійних кульок Прикладом елеваторної обробки кульок служить пристрій для доводки кульок, розміщених між двома співвісно розташованими дисками, в нижньому з яких, установленому з можливістю обертання, виконані концентричні канавки. Дане пристосування забезпечує впорядкований рух кульок в робочій зоні і перевід їх з одної доріжки на другу, в результаті чого значно збільшується продуктивність і якість обробки.[1] Був розроблений новий ексцентричний доводочний верстат, власні прототипи авторів. Основна відмінність між цим ексцентриковим доведенням і звичайним концентричним доведенням полягає в тому, що введено зміщення між обертовою віссю і центром кругової V-подібної канавки на нижньому диску-притиру, а верхній диск-притир є плоский і нерухомий. Були проведені експериментальні дослідження з дисками-притирами з м'якої сталі для доведення двох типів куль з нітриду кремнію, отриманих гарячим ізостатичним пресуванням.[2] Спроби вирішити проблему продуктивності привели до створення схем безцентрового шліфування кульок на станках з повздовжньою подачею. На відміно, від відомої схеми обробки циліндричних заготовок провідний круг був виконаний з гвинтовою канавкою несиметричного профілю, а шліфувальний круг оснащений кільцевими канавками. Таке рішення забезпечило обертання кульок від сильного тертя з провідним кругом та додатковим обертанням за рахунок періодичного переривання контакту із шліфувальним кругом. Основна перевага розробленого методу обробки полягає у високій продуктивності процесу. [3] Завдання вирівнювання сітки слідів обробки на поверхні кульок досягається тим, що введені один або більше пружних гальмівників, закріплених на станині верстату з боку відкритих пазів сепаратора так, що завдяки гальмуванню забезпечують додаткове обертання ненавантажених кульок навколо нормалі до площини їхнього руху, що й забезпечує вирівнювання сітки слідів обробки на поверхні кульок завдяки періодичному змінюванню положення миттєвої осі обертання під час руху однією канавкою, що сприяє підвищенню геометричної точності оброблюваних кульок і насамкінець продуктивності обробки невеликих партій кульок.[4] Analysis of finishing methods for precision balls- An example of elevator processing of balls is a device for refining balls placed between two coaxial disks, in the lower of which, installed with the possibility of rotation, made concentric grooves. This device provides an orderly movement of the balls in the working area and their transfer from one track to another, resulting in a significant increase in productivity and quality of processing. [1]- A new eccentric sharpening machine was developed, the authors' own prototypes. The main difference between this eccentric adjustment and conventional concentric adjustment is that an offset is introduced between the rotating axis and the center of the circular V-groove on the lower grinding disc, and the upper grinding disc is flat and stationary. Experimental studies were performed with mild steel grinding wheels to prove two types of silicon nitride balls obtained by hot isostatic pressing. [2]- Attempts to solve the problem of productivity have led to the creation of schemes of centerless grinding of balls on machines with longitudinal feed. In contrast to the known scheme of processing cylindrical workpieces, the guide wheel was made with a helical groove of asymmetrical profile, and the grinding wheel is equipped with annular grooves. This solution provided the rotation of the balls from strong friction with the driving wheel and additional rotation due to the periodic interruption of contact with the grinding wheel. The main advantage of the developed processing method is the high productivity of the process. [3]- The task of leveling the grid of traces of processing on the surface of the balls is achieved by introducing one or more elastic brakes mounted on the frame of the machine from the open grooves of the separator so that by braking provide additional rotation of unloaded balls around normal to the plane of their movement. grids of traces on the surface of the balls due to periodic changes in the position of the instantaneous axis of rotation when moving in one groove, which improves the geometric accuracy of the processed balls and finally the productivity of processing small batches of balls. [4]

The Helical Anchor Type with Application as a Horizontal Drainage Equipment for Slope Protection

Helical anchors, sometimes referred to as screw anchors, screw piles, and helical piles, are a steel screw-in piling and ground anchoring system used for building deep foundations. Screw piles are manufactured using varying sizes of tubular hollow sections for the pile or anchor shaft. This paper presents an innovation of the helical anchor for horizontal drains, a form of subsurface drainage systems for slope protection. To address the adverse effect of groundwater, an expansion of the application of the helical anchor structure in civil engineering is needed, and new drainage solutions are being considered. The features of the helical anchor type for horizontal drainage equipment, analyses of some of its advantages, and conditions of application are presented. Generally, a helical anchor for horizontal drainage is convenient for installation, maintenance, or removal, and is effective for both horizontal drainage and for anchoring the revetment. It is also a typical construction in drainage works, generally performed by a cranking handle or a rotary-percussion-type drilling machine. The helical anchor pipe for horizontal drainage has many segments with joints using a cranking hand for installation and is quite effective where the installation space is narrow or there is no machine. In particular, the installation of this equipment differs significantly from other drilling methods because it can be driven into a sand layer without a hole wall.

Ammonia-soda residue and metallurgical slags from iron and steel industries as cementitious materials for clinker-free concretes

Ammonia-soda residue (ASR) is a solid waste released during the ammonia-soda process, which lacks proper disposal. In this paper, ASR was combined with various metallurgical slags from the iron and steel industries to prepare a clinker-free concrete. As a new building material without cement, it can replace traditional concretes, thereby reducing CO2 emissions during the clinker production. Specifically, ASR, ground granulated blast-furnace slag (GGBS), steel slag (SS), and flue gas desulfurization gypsum (FGD) were used as cementitious materials, whereas waste iron ore tailings served as aggregates. According to the workability test results, ASR could reduce the fluidity of concrete and shorten the initial and final setting times. Furthermore, the compressive strength of a clinker-free concrete with cementitious material composed of ASR 6%, GGBS 62%, SS 20%, and FGD 12% could reach 36.29 and 66.31 MPa after 3 and 360 days, increasing by 32% and 27% compared with a control specimen, respectively. The XRD and SEM results revealed that the hydration products of a hardened paste prepared using ASR-GGBS–SS–FGD cementitious materials were mainly C-(A)-S-H gel, ettringite (AFt), and Friedel's salt (FS). In addition, the information about hydration heat and porosity of the obtained materials evidenced the ASR-accelerated hydration reaction of cementitious materials, reducing the 20–50 nm pore volume of the hardened pastes, however, increasing the >50 nm pore volume. The free-Cl- concentrations in the concrete with 6% ASR in the cementitious material were 2.69 × 10−3 and 1.24 × 10−3 g/g after 3 and 360 days, respectively. The results show that ASR clinker-free concretes with ASR contents less than 6% are suitable for preparation of reinforced concretes, which is also confirmed by the reinforcement corrosion tests. Finally, the hydration mechanisms and characteristics of ASR-GGBS–SS–FGD-based cementitious materials were carefully assessed. Silicates and aluminates used for obtaining hydration products were derived from GGBS under the condition that SS provided a sufficient alkaline environment for the hydration reaction, while chloride and carbonate in the ASR accelerated the hydration process. In this respect, the present work ensures a solid experimental basis for the synergistic utilization of multi-solid wastes.

Study on formation mechanism and regularity of residual stress in ultrasonic vibration grinding of high strength alloy steel

The surface residual stress of the part has a crucial influence on its service performance. This paper studies the formation mechanism of residual stress in Ultrasonic Vibration Grinding (UVG) of high strength alloy steel, and obtains the correlation law between processing parameters and residual stress. First, based on the kinematics analysis of UVG, the formulas of ultrasonic grinding force and ultrasonic grinding transient moving heat source temperature field are analyzed. A thermal-mechanical coupled ultrasonic vibration grinding residual stress prediction model was established by FEM and verified by experiments. Second, the thermal behavior of the workpiece surface during UVG is analyzed, and the formation mechanism of the residual stress on the workpiece surface is explained. Finally, combining simulation and experimental results, a comprehensive correlation law between multiple grinding process parameters and residual stress is obtained. The research results show that compared with common grinding (CG), UVG can reduce the grinding temperature by about 8%. Both UVG and CG will reduce the original compressive stress on the surface, but UVG can make the surface of the workpiece retain greater compressive residual stress and prevent the emergence of tensile residual stress. This work of the thesis provides a basis for the research of residual stress in UVG.

Effects of grinding media on the flotation performance of cassiterite

Grinding plays an important role in the beneficiation process. Different grinding media can determine the size distribution, shape, and even the surface properties of the produced material. However, comprehensive research related to the effect of grinding media on the flotation performance of cassiterite is lacking. In the current study, the effects on the flotability of the products obtained by grinding with ceramic and stainless steel media were investigated using micro-flotation, laser particle size distribution analysis, inductively coupled plasma optical emission spectroscopy (ICP-OES), chemical element analysis, zeta potential measurements, field emission scanning electron microscopy-energy dispersive spectroscopy (FESEM-EDS), and X-ray photoelectron spectroscopy (XPS). The micro-flotation results demonstrate that the flotability of stainless steel ground cassiterite surpasses that of ceramic. The laser particle size distribution test reveals that the two grinding media do not have a strong impact on the particle size distribution. The ICP-OES and chemical element analysis results identify the higher iron content in the samples and pulp of stainless steel ground cassiterite as the principle influencing factor. The zeta potential analysis indicates that the dissolved iron ions absorbed on the cassiterite surface results in a positive shift of the mineral surface potential. This not only reduces electrostatic repulsion but also increases the active sites of salicylhydroxamic acid (SHA) chemisorption. FESEM-EDS results demonstrate the rougher surface and higher iron content of the stainless steel ground cassiterite compared to the ceramic ground cassiterite, thereby increasing the SHA adsorption. The stainless steel grinding cassiterite was observed to alter the chemical environment of Fe species on the cassiterite surface via XPS analysis, with Fe2+ exhibiting a stronger reactivity and stability towards SHA compared to Fe3+. Thus, the stainless steel media ground cassiterite demonstrates an improved flotability performance compared to the ceramic equivalent.

Gear micropitting initiation of ground and superfinished gears: Wrought versus pressed and sintered steel

This paper investigates the resistance of micropitting on two materials, using an FZG back-to-back test rig with C-PT gears. The materials are wrought steel (16MnCr5) and a commercial powder metallurgical material (Astaloy™ Mo). Two finishing methods were studied: grinding and superfinishing. Experimental results show that the superfinishing prevented micropitting, but led to premature failure due to cracks in the root caused by tip-to-root interference. Micropitting was initiated at a higher load stage for the powder metallurgical steel compared to the ground wrought steel. The failure mechanisms were similar between materials with the same surface finish. The powder metallurgical steel showed subsurface initiated fatigue compared to the wrought ground steel having surface-initiated fatigue. Testing new finishing methods and materials, one has to be aware of the influence of the gear micro geometry.

Establishing the Relationship between Cutting Speed and Output Parameters in Belt Grinding on Steels, Aluminum and Nickel Alloys: Development of Recommendations.

This paper presents the research results of one of the main technological parameters of belt grinding, i.e., the cutting speed while machining corrosion- and heat-resistant, structural carbon and structural alloy steels, aluminum, and heat-resistant nickel alloys. Experimental and analytical methods are used to establish the dependence of the output parameters of surface belt grinding on the cutting speed and tool characteristics. An analytical model, considering the physical and mechanical properties of the grinding belt (strength depending on the base and bond; the thermal conductivity; the type of grinding operation) and the machined material, is created to determine the belt grinding speed. The output parameters, such as the arithmetic mean of the surface roughness (Ra) and the material removal rate (MRR) during the belt grinding of steels, heat-resistant and light alloys, have been studied. Based on the empirical dependencies of the belt grinding parameters, the model was developed for the selection and setting of the cutting speed of belt grinding for the aforementioned alloys, taking into account the type of operation, the type of the machined material, and the main characteristics of the sanding belt.

ВЫБОР МАРКИ СПЛАВА, ПОКРЫТИЯ И ГЕОМЕТРИЧЕСКИХ ПАРАМЕТРОВ РЕЖУЩЕЙ ПЛАСТИНЫ ДЛЯ ТОРЦЕВОГО ФРЕЗЕРОВАНИЯ ВЫСОКОУГЛЕРОДИСТОЙ ЗАКАЛЁННОЙ СТАЛИ 95Х18-Ш

The application of hardened steel parts for the purpose of wear-resistance increase becomes increasing spread in different branches of mechanical engineering. In view of high hardness of the work surface of parts, finishing is carried out by flat grinding. 
 During the hardened steel grinding there are formed burns, cracks, admixtures of abrasive particles in the work surface which are inadmissible defects in a surface layer of critical parts mounted in the fuel unit of an aviation engine. 
 The analysis of literature and company experience has shown that after thermal treatment instead of finishing is necessary to use surface finishing by a face milling method, but there are no sufficient recommendations for tool choice and cutting modes to date. Jointly with the educational department there are carried out theoretical researches of cutters for the face milling of the “selector housing” mass-produced parts consisting of corrosion-resistant 95H18-Sh steel with the hardness of 59÷61 HRC. In the paper there is considered a chemical composition of 95H18-Sh steel, a method for manufacturing a cast, its physical, mechanical and chemical properties. 
 Taking into account data obtained for the face-milling cutter installation on the frame there was chosen Sandvik Coromant material for the replaceable cutting insert the base of which consists of hard alloy 1010 with PVD coating. 
 Later on there was carried out selection of basic geometrical parameters and characteristics of a cutting plate and also a micro-geometry of a major cutting edge and a tip. Mass-produced replaceable through-away plates with R245-12 T3 M-PM number of 1010 hard alloy and PVD coating were obtained from the catalog of Sandvik Coromant company. At the end of the work a conclusion was drawn that the application of face milling will allow ensuring the requirements to the design documentation of the product, decreasing thermal and power stress of the process, increasing productivity, surface quality and excluding the necessity in abrasion, and the investigation results are applicable to the fulfillment of the complete factor experiment and computation of a simulator with the definition of the impact of variable factors upon a response function.