Mechano-Chemical Surface Modification of High-Speed Steel Cutting Tools

2019 ◽  
Vol 141 (4) ◽  
Author(s):  
Ye Qi ◽  
Vinh Nguyen ◽  
Shreyes Melkote ◽  
Michael Varenberg
Keyword(s):  
Surface Modification ◽  
High Speed ◽  
Cutting Tool ◽  
Orthogonal Cutting ◽  
Cutting Tools ◽  
High Speed Steel ◽  
Dimensional Accuracy ◽  
Base Oil ◽  
Chemical Surface ◽  
Chemical Surface Modification

In this work, a mechano-chemical surface modification to improve cutting tool performance is proposed. We applied this surface modification via shot peening the rake faces of high-speed steel tools with a blend of Al2O3 and Cu2S particles that serve as a plastic deformation medium and a chemical precursor, respectively. Orthogonal cutting experiments under base oil lubrication demonstrated that the proposed treatment results in a reduction of cutting and thrust forces, as well as in a reduction of built-up edge formation. These effects are explained by favorable changes in the lubricity and roughness of the rake face, and they suggest that this method has the potential to increase cutting tool life, lower energy consumption, and improve the dimensional accuracy and surface quality of a machined workpiece.

scholarly journals Analysis of the Performance of Drilling Operations for Improving Productivity

2021 ◽  
Author(s):  
Majid Tolouei-Rad ◽  
Muhammad Aamir
Keyword(s):  
High Speed ◽  
Cutting Tools ◽  
High Speed Steel ◽  
Dimensional Accuracy ◽  
Vital Role ◽  
Machining Process ◽  
Drilling Process ◽  
Single Shot ◽  
Drilling Operations

Drilling is a vital machining process for many industries. Automotive and aerospace industries are among those industries which produce millions of holes where productivity, quality, and precision of drilled holes plays a vital role in their success. Therefore, a proper selection of machine tools and equipment, cutting tools and parameters is detrimental in achieving the required dimensional accuracy and surface roughness. This subsequently helps industries achieving success and improving the service life of their products. This chapter provides an introduction to the drilling process in manufacturing industries which helps improve the quality and productivity of drilling operations on metallic materials. It explains the advantages of using multi-spindle heads to improve the productivity and quality of drilled holes. An analysis of the holes produced by a multi-spindle head on aluminum alloys Al2024, Al6061, and Al5083 is presented in comparison to traditional single shot drilling. Also the effects of using uncoated carbide and high speed steel tools for producing high-quality holes in the formation of built-up edges and burrs are investigated and discussed.

STUDY ON THE TRIBOLOGICAL BEHAVIOR OF CUTTING TOOLS COATED WITH FILMS

2011 ◽  
Vol 25 (31) ◽  
pp. 4261-4264 ◽  
Author(s):  
MANABU YASUOKA
Keyword(s):  
Friction Coefficient ◽  
High Speed ◽  
Cutting Tool ◽  
Cutting Tools ◽  
High Speed Steel ◽  
Frictional Properties ◽  
Coated Tool ◽  
Significant Difference ◽  
The Difference ◽  
Pin On Disk

A hard film coat can improve a tool's performance. In this study, the frictional properties of an uncoated tool and a coated tool with TiN were measured against that of SCM440 (42 CrMo 4) steel. The results showed there was no significant difference between the friction coefficient of the high-speed steel tool and the tool coated with TiN but the friction coefficient of uncoated tool was slightly lower than that of the steel. In the second part of the study, coats of TiN , TiC , CrN , and TiAlN were deposited on high-speed steel and the wear characteristics were determined with a pin-on-disk wear examination. The differences in the friction coefficients were attributed to the difference in the wear of the slipping material. There were large differences in the adhesion characteristics on the surface of the slipping material. The author suggest that these differences influence the characteristics of the cutting tool.

Durability Analysis for Selected Cutting Tools in Machining Process of Steel 16MoV6-3

2013 ◽  
Vol 308 ◽  
pp. 133-139 ◽  
Author(s):  
Ján Duplák ◽  
Michal Hatala ◽  
Peter Michalik
Keyword(s):  
High Speed ◽  
Cutting Tool ◽  
Cutting Tools ◽  
High Speed Steel ◽  
Machining Process ◽  
Technical Science ◽  
Sintered Carbide ◽  
Durability Analysis ◽  
Tool Durability

Durability of cutting tool defines lifetime of this cutting tool and it determines its suitability for select technological operation. Technical science defines a lot of different factors, that they may be cause of shorter cutting tool lifetime. For increase cutting tool durability is necessary maximally possible elimination of these factors. Determination of cutting tool durability is very important, because provides comprehensive information how to determine appropriate technological conditions for selected cutting tool. In engineering is for determination of cutting tools durability used T-vc dependence. Durability of cutting tools is defined in standard ISO 3685. In standard ISO 3685 is defined T-vc dependence for different cutting materials and standard included process evaluation of tool durability for cutting materials made of high speed steel, sintered carbide and cutting ceramic. Specification of cutting tools durability in machining process of steel 16MoV6-3 is very important for economics of small and medium-sized enterprises, because cutting tool durability is factor that significantly affects the budget of these enterprises. Standard ISO 3685 contains instructions how to create T-vc dependence for cutting tools. In this standard are only instructions how to create T-vc dependence according to Mr. Taylor. The article describes process how to create durability dependence for cutting tools made of sintered carbide in machining process of 16MoV6-3 by means of T-vc dependence.

Effect of residual elements on the machinability of leaded free machining steels

1980 ◽  
Vol 295 (1413) ◽  
pp. 87-88 ◽  
Keyword(s):  
Wear Rate ◽  
Tool Wear ◽  
Tool Life ◽  
High Speed ◽  
Cutting Tool ◽  
Cutting Tools ◽  
Tool Material ◽  
High Speed Steel ◽  
Low Carbon ◽  
Wear Rates

The machinability of a material can be defined in terms of the wear rate of the cutting tool used to machine the material. The lower the tool wear rate or the greater the tool life the better the machinability. The wear processes of cutting tools are complicated, but recent work has shown that cutting tool wear rates during machining can be directly related to tool material wear rates when rubbing in a modified crossed cylinder wear experiment (Mills & Akhtar 1975). The wear of cutting tools can be simulated by simple experiments. Here I present results on the effect of total residual levels in leaded low carbon free machining steels on the tool life of M2 high speed steel. The results will be discussed in terms of a simple wear model.

Bearing Rings Turning and the Impact of this Process for Resulting Durability of Selected Cutting Materials Durability

2015 ◽  
Vol 669 ◽  
pp. 278-285
Author(s):  
Anton Panda ◽  
Ján Duplák ◽  
Miroslav Kormoš ◽  
Slavko Jurko
Keyword(s):  
High Speed ◽  
Cutting Tool ◽  
Cutting Tools ◽  
Cutting Speed ◽  
High Speed Steel ◽  
Price Cutting ◽  
Cutting Ceramic ◽  
Bearing Rings ◽  
The Impact ◽  
Tool Durability

Essential factors of each new discovery or piece of knowledge in science are predetermined, prepared and realized experiment. Every successfully realized experiment with obtained outputs and measurements indicates the gauge of asset that has been achieved by its execution. After analyzing of outputs final dependencies can be described that generalize whole experiment and allow entire process to be analytically identified. The production of bearings is very difficult process. Especially production of bearing rings is very complicated. Optimization of this process means significant savings for the company. Bearing rings are produced by turning. One of the most important parts of the turning process is cutting tool. On the base of cutting tools are determined many factors for example: quality, price, cutting speed, etc. All these factors of cutting tools are the only consequence of these cutting tools durability. Cutting tool durability determines its cutting properties and machinable ability. Specification of tool wear by means of calculation is very difficult. Durability of cutting tools is defined in standard ISO 3685. In standard ISO 3685 is definedT-vcdependence for different cutting materials and standard included process evaluation of tool durability for cutting materials made of high speed steel, sintered carbide and cutting ceramic. The article describes evaluation ofT-vcdependence on the selected type of cutting materials and theirs comparison with measured values T-vc dependence that are defined in standard ISO 3685.

Analysis of Selected Properties of Cutting Ceramics at Machining Process of Bearing Steel 100Cr6

2014 ◽  
Vol 616 ◽  
pp. 308-316 ◽  
Author(s):  
Anton Panda ◽  
Ján Duplák ◽  
Marek Prislupčák ◽  
Pavol Kokuľa
Keyword(s):  
High Speed ◽  
Cutting Tool ◽  
Cutting Tools ◽  
High Speed Steel ◽  
Bearing Steel ◽  
Machining Process ◽  
Cutting Ceramic ◽  
Cutting Ceramics ◽  
Bearing Rings ◽  
Tool Durability

Cutting tool durability is very important cutting tool property. Especially for cutting ceramic is necessary to define durability dependence on available set of cutting speeds and to determine lifetime of tools made of cutting ceramic. Durability of cutting tools is defined in standard ISO 3685. In standard ISO 3685 is defined T-vc dependence for different cutting materials and standard included process evaluation of tool durability for cutting materials made of high speed steel, sintered carbide and cutting ceramic. Specification cutting tools durability made of cutting ceramic in machining process of steel 100Cr6 is very important for economics of small and medium-sized enterprises, because cutting tool durability is factor that significantly affects the budget of these enterprises. This problematic is determined for small and medium-sized manufacturers of bearings, because steel 100Cr6 is most commonly used for production of bearing rings 100 mm in diameter. This material is usable for actuator (actuators and reduction gears) too. Description of cutting ceramic durability could mean for bearings manufacturer determination of optimal cutting parameter with maximum possible use of tool lifetime. Standard ISO 3685 contains instructions how to create T-vc dependence for cutting tools made of cutting ceramic. In this standard are only instructions how to create T-vc dependence according to Taylor. The article compares T-vc dependencies for various cutting ceramics (Al2O3, Al2O3+ZrO2, Al2O3+TiCN) with T-vc dependence defined in standard ISO 3685, because this standard describes T-vc dependence for all entered cutting materials together.

Observations on the Angle Relationships in Metal Cutting

1959 ◽  
Vol 81 (3) ◽  
pp. 263-279 ◽  
Author(s):  
D. M. Eggleston ◽  
R. Herzog ◽  
E. G. Thomsen
Keyword(s):  
High Speed ◽  
Metal Cutting ◽  
Orthogonal Cutting ◽  
Minimum Energy ◽  
Cutting Tools ◽  
Cutting Speed ◽  
High Speed Steel ◽  
Shear Plane ◽  
Energy Criterion ◽  
The Hill

Orthogonal-cutting experiments using SAE 1112 free-cutting steel, 2024-T4 and 6061-T6 aluminum alloys, and alpha-brass (85 Cu-15 Zn) at feeds of 0.002 to 0.010 ipr, were performed on a lathe with 18-4-1 high-speed-steel cutting tools. The mean cutting speeds and rake angles for SAE 1112 varied from 33.7 to 170.8 fpm and 5 to 40 deg, respectively, while the remainder of the alloys were tested at conditions yielding a continuous chip without a built-up edge at speeds ranging from approximately 470 to 790 fpm. It was found that the angle λ between the shear plane and the resultant tool force R was only approximately constant for each test condition and varied with cutting speed. Hence the equation λ = ϕ + β − α = const and the linear relationship between ϕ and β − α are only approximately satisfied. Furthermore, neither the Ernst and Merchant minimum-energy criterion, nor the Lee and Shaffer nor the Hill ideal plastic-solid solution, is in agreement with all the experimental observations.

Roller Bearings and Analytical Expression of Selected Cutting Tools Durability in Machining Process of Steel 80MoCrV4016

2013 ◽  
Vol 415 ◽  
pp. 610-613 ◽  
Author(s):  
Anton Panda ◽  
Ján Duplák ◽  
Jozef Jurko ◽  
Iveta Pandová
Keyword(s):  
High Speed ◽  
Cutting Tool ◽  
Cutting Tools ◽  
High Speed Steel ◽  
Machining Process ◽  
Engineering Practice ◽  
Technical Science ◽  
Analytical Expression ◽  
Comprehensive Information ◽  
Tool Durability

Technical science defines a lot of different factors, that they may be cause of shorter cutting tool lifetime. For increase of cutting tool durability is necessary maximally possible elimination of these factors. Determination of cutting tool durability is very important, because provides comprehensive information how to determine appropriate technological conditions for selected cutting tool. The analytical expression of dependence represents very important part of experiments, because all tested processes can be described and defined by formula. These instructions, how to proceed in experiments are obtained in standard ISO 3685. Very important and often used standard ISO in engineering practice is standard ISO 3685. The main part of this standard is T-vc dependence for cutting materials. In standard ISO 3685 are included cutting materials made of high speed steel, sintered carbide and cutting ceramic. The article describes process how to define and to analytically express T-vc dependence for cutting tools made of ceramic in machining process of steel 80MoCrV4016.

scholarly journals Cutting performance of deep cryogenic treated and nitrided HSS cutting tool inserts

2019 ◽  
Vol 13 (3) ◽  
pp. 213-217
Author(s):  
Sanja Šolić ◽  
Zdravko Schauperl ◽  
Vlado Tropša
Keyword(s):  
Wear Resistance ◽  
High Speed ◽  
Cutting Tool ◽  
Cryogenic Treatment ◽  
Single Point ◽  
Cutting Tools ◽  
Cutting Speed ◽  
High Speed Steel ◽  
Cutting Performance ◽  
Deep Cryogenic Treatment

High speed steel (HSS) is a very important industrial tool material and has been constantly improved for different wear resistance applications and cutting tools, i.e. drills, milling cutters, hobs and for the cutting tools in which the economical cutting speed is too low for choosing the carbide tools. The properties of HSS depend significantly on the parameters of the conducted heat treatment. In this paper, the influence of deep cryogenic treatment in combination with nitriding of metallurgical powder metallurgy HSS on the wear resistance was measured. Additionally, the cutting performance in a single point cutting tool machinability test at the configuration of the dry low-speed turning of steel was investigated. The results showed that deep cryogenic treatment itself, and in combination with nitriding, resulted in the reduction of the wear rate. The results of the single point cutting tool machinability test showed that deep cryogenic treated and nitrided HSS inserts performed worse than the classically heat-treated inserts and deep cryogenic treated HSS inserts exhibited approximately the same flank wear as the nitrided ones.

Study on Effect of Tool Overhang on Machining Characteristics of Al 7075-T6 in Orthogonal Turning Process

2019 ◽  
Vol 969 ◽  
pp. 870-875
Author(s):  
K. Uday Venkat Kiran ◽  
Chetan Rodge ◽  
Rameshwar Dhurve ◽  
Romil Jain ◽  
Ravikumar Dumpala
Keyword(s):  
High Speed ◽  
Cutting Tool ◽  
Orthogonal Cutting ◽  
Cutting Speed ◽  
High Speed Steel ◽  
Chip Morphology ◽  
Optical Microscope ◽  
External Diameter ◽  
Orthogonal Turning ◽  
Overhang Length

In the present experimental study, the effect of turning tool overhang on the chip morphology and vibrations during orthogonal turning has been investigated. Orthogonal cutting (turning) setup was developed to ensure the cutting process happens in a 2-dimesional plane. Orthogonal cutting was realized by turning a circular tube with geometry of 33.88 mm external diameter and 3.5 mm wall thickness (7075-T6 Alloy). High speed steel (HSS) rod with a square cross-section (1⁄2 x 1⁄2 square inch) was used to fabricate the orthogonal turning tool with a geometry of 15 ̊ back rake angle and 9 ̊ clearance angle. The cutting experiments were conducted for different tool overhang lengths (2cm, 3cm, 4cm, 5cm & 6cm) by keeping constant cutting speed (25 m/min) and feed (0.15mm/rev). The vibrational characteristics were measured using accelerometer and Ni-DAQ card. The morphology and microstructure of the chips collected during cutting were studied under optical microscope using metallographic procedures. It was found that for increasing overhang length of cutting tool the chips serrations was found increasing. The frequency of cutting tool and amplitude of vibration was found increasing with increasing tool overhang length.

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