scholarly journals Protective Woodcutting Tool Coatings

2016 ◽  
Vol 64 (3) ◽  
pp. 835-839 ◽  
Author(s):  
Svetlana D. Latushkina ◽  
Pavel V. Rudak ◽  
Dmitri V. Kuis ◽  
Oxana G. Rudak ◽  
Olga I. Posylkina ◽  
...  
Keyword(s):  
Performance Enhancement ◽  
Metal Removal ◽  
High Reliability ◽  
Cutting Tools ◽  
Cutting Parameters ◽  
Deposition Process ◽  
Vacuum Arc ◽  
Resource Saving ◽  
Tool Coatings ◽  
Vacuum Arc Deposition

The modern woodworking industry applies resource-saving, environmentally appropriate technologies, providing both the metal removal performance enhancement and functioning with the optimal economic factors. Progressive cutting parameters require the application of the high-reliability cutting tools, eliminating machine-tool equipment standstill and increased cost of the expensive tool materials. In this paper it is suggested to increase the wood-cutting tool efficiency by means of the vacuum-arc separated coating deposition process optimization. The droplets are one of the main problems while generating vacuum-arc coatings, and they have a bad influence on the quality and operational coatings characteristics. The application of the separated system, allowing minimize the droplets content, is one of the most promising ways to solve this problem. Vacuum-arc deposition technique was used in this work to generate multicomponent coatings. The coatings deposition was directly carried out on the modernized vacuum-arc plant, equipped by Y-shaped macroparticles separator.

Nano-Scale Multi-Layered Coatings for Cutting Tools Generated Using Assisted Filtered Cathodic-Vacuum-Arc Deposition (AFCVAD)

2013 ◽  
Vol 325-326 ◽  
pp. 1454-1459 ◽  
Author(s):  
A.A. Vereschaka ◽  
A.S. Vereschaka ◽  
S.N. Grigoriev ◽  
D.V. Sladkov
Keyword(s):  
High Efficiency ◽  
Cutting Tools ◽  
Deposition Process ◽  
High Energy ◽  
Vacuum Arc ◽  
Properties Of Coatings ◽  
Vacuum Arc Deposition ◽  
Filtered Cathodic Vacuum Arc ◽  
Carbide Inserts ◽  
Arc Deposition

The subject of this study were nano-nanoscale multilayer coatings formed using the process of filtered cathodic vacuum arc deposition in assisting high-energy ions of chromium. We used a special emitter (implantor) to generate chromium ions with high energy. Such key parameters of coatings as composition, structure, a thickness, hardness, adhesion in relation to a substrate obtained at various energy of chrome ions have been studied. It is establish the positive change of key properties of coating deposited on carbide inserts WC/CrC/Co, WC / (Co-Re), TiC/TaC/Co at assisted impact of ions Cr at ion acceleration voltage within the range of 10-40 kV. The results of measurement of parameters of coatings with use nanoindentometer are consistent with the X-ray analysis of the stresses in the coating (XSA study). The mechanisms of the effect of modified properties of coatings formed in assisting the filtered cathodic vacuum arc deposition on the properties of the carbide inserts in cutting structural steels and hard-to-cut nickel alloys have confirmed the high efficiency of the deposition process developed coatings and coating compositions.

Influence of the microstructure of tool coatings based on Ti and Al on the blunting process during chipboard processing

2020 ◽  
Vol 112 ◽  
pp. 54-59
Author(s):  
Paweł Czarniak ◽  
Karol Szymanowski ◽  
Peter Panjan
Keyword(s):  
Multilayer Coating ◽  
Cutting Tools ◽  
Rf Magnetron Sputtering ◽  
Deposition Process ◽  
Cnc Milling ◽  
Tool Coatings ◽  
Long Time ◽  
Machine Industry ◽  
Altin Coating ◽  
Clearance Face

Influence of the microstructure of tool coatings based on Ti and Al on the blunting process during chipboard processing.This work concerns three different tool coatings containing Ti and Al. i.e. TiN, AlTiN, TiAlSiN applied to cutting tools used in the machining of wood materials. In the case of the AlTiN coating, a multilayer structure with alternately arranged AlTiN and TiN nano-layers was used. The above coatings were applied to standard replaceable knives used for CNC milling heads made of WC-Co cemented carbide. The deposition process was carried out using the RF Magnetron Sputtering method. During the measurement on a workshop microscope, the VBmax index measured on the clearance face was adopted as the wear criterion. The research proved a very good behaviour of the TiN/AlTiN multilayer coating, for which the longest average service life which was recorded exceeded the results obtained for the reference tool by about 30%. The addition of silicon, which was supposed to increase the abrasion resistance, only did not improve the durability of the blade, it actually worsened it by 6%. In addition, the coating, which has been widely used in the machine industry for a very long time, i.e. TiN, did not extend the tool life significantly (+ 7%).

scholarly journals Improvement of structure and quality of nanoscale multilayered composite coatings, deposited by filtered cathodic vacuum arc deposition method

2016 ◽  
Vol 7 ◽  
pp. 184798041668080 ◽  
Author(s):  
Alexey A Vereschaka ◽  
Anatoly S Vereschaka ◽  
Andre DL Batako ◽  
Boris J Mokritskii ◽  
Anatoliy Y Aksenenko ◽  
...  
Keyword(s):  
Composite Coating ◽  
Surface Defects ◽  
Composite Coatings ◽  
Cutting Tools ◽  
Vacuum Arc ◽  
Multilayered Composite ◽  
Vacuum Arc Deposition ◽  
Filtered Cathodic Vacuum Arc ◽  
Longitudinal Turning ◽  
Arc Deposition

This article studies the specific features of cathode vacuum arc deposition of coatings used in the production of cutting tools. The detailed analysis of the major drawbacks of arc-Physical Vapour Deposition (PVD) methods has contributed to the development of the processes of filtered cathodic vacuum arc deposition to form nanoscale multilayered composite coatings of increased efficiency. This is achieved through the formation of nanostructure, increase in strength of adhesion of coating to substrate up to 20%, and reduction of such dangerous coating surface defects as macro- and microdroplets up to 80%. This article presents the results of the studies of various properties of developed nanoscale multilayered composite coating. The certification tests of carbide tool equipped with cutting inserts with developed nanoscale multilayered composite coating compositions in longitudinal turning (continuous cutting) and end symmetric milling, and intermittent cutting of steel C45 and hard-to-cut nickel alloy of NiCr20TiAl showed advantages of tool with nanoscale multilayered composite coating as compared to the tool without coating. The lifetime of the carbide inserts with developed NMCC based on the system of Ti–TiN–(NbZrTiCr)N (filtered cathodic vacuum arc deposition) was increased up to 5–6 times in comparison with the control tools without coatings and up to 1.5–2.0 times in comparison with nanoscale multilayered composite coating based on the system of Ti–TiN–(NbZrTiCr)N (standard arc-PVD technology).

scholarly journals On the properties of TiN films prepared by vacuum arc deposition process.

Shinku ◽  
1987 ◽  
Vol 30 (10) ◽  
pp. 786-792 ◽  
Author(s):  
Koji OKAMOTO ◽  
Eiji KAMIJO
Keyword(s):  
Deposition Process ◽  
Vacuum Arc ◽  
Tin Films ◽  
Vacuum Arc Deposition ◽  
Arc Deposition

Development of Assisted Filtered Cathodic Vacuum Arc Deposition of Nano-Dispersed Multi-Layered Composite Coatings on Cutting Tools

2013 ◽  
Vol 581 ◽  
pp. 62-67 ◽  
Author(s):  
Alexey Anatolevich Vereschaka
Keyword(s):  
Composite Coatings ◽  
Cutting Tools ◽  
High Energy ◽  
Layered Composite ◽  
Vacuum Arc ◽  
Wide Range ◽  
High Energy Ions ◽  
Vacuum Arc Deposition ◽  
Filtered Cathodic Vacuum Arc ◽  
Tool Types

This paper presents the results of development and application of processes for modification of various properties of working surfaces of cutting tools by condensing vapor and ion flows in assisting impulse or constant exposure to high-energy ions. The paper shows features of the technology and equipment for the formation of wear-resistant components, which modify the structure and properties of working surfaces of various edge cutting tool types in a wide range of temperatures, in order to improve tool life and reliability. Various properties of the modifying components were studied, and their ability to improve the operational efficiency of different types of carbide cutting tools for cutting various materials was shown.

scholarly journals Properties of AlN Film Formed by Vacuum Arc Deposition Process

1991 ◽  
Vol 111 (12) ◽  
pp. 1042-1046
Author(s):  
Hirofumi Takikawa ◽  
Tadashi Ogiriyama ◽  
Tateki Sakakibara
Keyword(s):  
Deposition Process ◽  
Vacuum Arc ◽  
Aln Film ◽  
Vacuum Arc Deposition ◽  
Arc Deposition

Low Threshold Field Emission From Nanocluster Carbon Films

1999 ◽  
Vol 593 ◽  
Author(s):  
W.I. Milne ◽  
B.S. Satyanarayana ◽  
J. Robertson
Keyword(s):  
Field Emission ◽  
Deposition Process ◽  
Carbon Films ◽  
Vacuum Arc ◽  
Threshold Field ◽  
Bonding Ratio ◽  
Low Threshold ◽  
Current Densities ◽  
Vacuum Arc Deposition ◽  
Arc Deposition

ABSTRACTCarbon films with variable sp3/sp2 bonding ratio can be deposited on a variety of substrates at room temperature, using the cathodic vacuum arc deposition process. The variation in their surface morphology as a function of He and N2partial pressure during growth have been investigated and it has been shown that the morphology of the films can be varied from the mirror like smooth tetrahedrally bonded carbon (ta-C) films through nanocluster to fibrous type carbon. This paper reviews the work carried out on Field Emission from these various carbon films. Threshold fields as low as 1 V/μm for emission current densities of 1 μA/cm2 and emission site densities of up to 104 -105/cm2 have been obtained.

scholarly journals Increase in Efficiency of End Milling of Titanium Alloys Due to Tools with Multilayered Composite Nano-Structured Zr-ZrN-(Zr,Al)N and Zr-ZrN-(Zr,Cr,Al)N Coatings

Coatings ◽  
2018 ◽  
Vol 8 (11) ◽  
pp. 395 ◽  
Author(s):  
Alexey Vereschaka ◽  
Maksim Oganyan ◽  
Yuri Bublikov ◽  
Nikolay Sitnikov ◽  
Konstantin Deev ◽  
...  
Keyword(s):  
Titanium Alloys ◽  
Metal Cutting ◽  
End Milling ◽  
Cutting Tools ◽  
Vacuum Arc ◽  
Multilayered Composite ◽  
Vacuum Arc Deposition ◽  
Filtered Cathodic Vacuum Arc ◽  
Life Parameter

The study deals with an increase in the tool life parameter for metal-cutting tools and efficiency of end milling for titanium alloys, due to the use of tools with multilayered composite nano-structured Zr–ZrN–(Zr,Al)N and Zr–ZrN–(Zr,Cr,Al)N coatings, deposited through the technology of the filtered cathodic vacuum arc deposition (FCVAD). The studies included the microstructured investigations using SEM, the analysis of chemical composition (Energy-dispersive X-ray spectroscopy, EDXS), the determination of the value of critical failure force (with the use of scratch testing), and the measurement of the microhardness of the coatings under study. The cutting tests were conducted in end milling of titanium alloys at various cutting speeds. The mechanisms of wear and failure for end milling cutters with the coatings under study were studied in milling. The studies determined the advantages of using a tool with the coatings under study compared to an uncoated tool, as well as to tools with the commercial Ti–TiN coating and the nano-structured Ti–TiN–(Ti,Al)N coating. Adding Cr to the composition of the coating can significantly increase the hardness, while the coating retains sufficient ductility and brittle fracture resistance, which allows for a best result when milling titanium alloys.

scholarly journals Tool Wear and Temperatures Analysis While Machining Ti-6Al-4V in MQCL-MIST Environment

2021 ◽  
Vol 10 (1) ◽  
pp. 31-47
Author(s):  
V. V. K. Lakshmi ◽  
K. V. Subbaiah ◽  
K. Arun Vikram ◽  
K. Suresh ◽  
R. D. V. Prasad
Keyword(s):  
Tool Wear ◽  
Goodness Of Fit ◽  
Metal Removal ◽  
Cutting Tools ◽  
Minimum Quantity Lubrication ◽  
Cutting Parameters ◽  
Correlation Study ◽  
Individual Response ◽  
Minimum Quantity ◽  
Wear Analysis

Sustainable machining of titanium alloys have deficiency of studies on the built-up edges over the cutting tools and temperature correlation in minimum quantity cooling lubrication (MQCL) environment. Researchers focused on experimentation in dry, wet, and MQL (minimum quantity lubrication) conditions to analyze surface finish, cutting forces, and metal removal rates. This work focuses on the study of cutting parameters effects on temperatures and tool wear analysis by consideration of individual response and their optimality basing on signal-to-noise ratios. Efficacy of process parameters on wear of tool and temperatures requires a comprehensive understanding. An elaborated tool wear analysis is carried based on the microscopic flank wear investigations. Machining of Ti-6Al-4V alloy is carried in the environment of MQCL in form of mist using semi-synthetic fluid. Correlation study of tool wear with regard to temperatures is analyzed and regression models generated on tool wear and cutting temperatures individually showed 83% of goodness-of-fit and correlation regression is 85%.

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