Lubrication of DLC and TiN Coatings With Two Ionic Liquids Used as Neat Lubricant and Oil Additive

2011 ◽  
Author(s):  
A. Hernandez Battez ◽  
D. Blanco Alonso ◽  
R. Gonzalez Rodriguez ◽  
J. L. Viesca Rodriguez ◽  
A. Fernandez-Gonzalez ◽  
...  
Keyword(s):  
Wear Resistance ◽  
High Speed ◽  
Cutting Tools ◽  
High Stress ◽  
High Speed Steel ◽  
High Wear Resistance ◽  
Tin Coatings ◽  
Machine Elements ◽  
Mixed Lubrication Regime ◽  
Forming Tools

Thin hard physical vapour deposited (PVD) coatings are today frequently used in order to improve the tribological performance of forming tools, cutting tools, and machine elements [1]. PVD TiN coating is widely used in high-speed steel cutting tools. Studies on the friction, wear characteristics and failure mechanisms of this coating have shown that it can reduce wear and diminish the failure of components. This coating frequently offers good corrosion protection and surface finish, high wear resistance and low coefficient of friction. On the other hand, PVD DLC (diamond-like carbon) coating provides a low friction and a high sliding wear resistance to enhance the tribological behavior and the durability of running components. DLC is becoming widely used as surface coating for machine components in lubricated systems, especially in the automotive industry. DLC coatings are nowadays frequently used in applications under high stress and/or under boundary or mixed lubrication regime and the range of use for these coatings keep growing rapidly.

scholarly journals Tribological properties of ion-modified composite coatings

2021 ◽  
Vol 2059 (1) ◽  
pp. 012015
Author(s):  
M Sh Migranov ◽  
A M Migranov ◽  
S R Shekhtman
Keyword(s):  
Wear Resistance ◽  
Tool Life ◽  
High Speed ◽  
Composite Coatings ◽  
Cutting Tools ◽  
High Speed Steel ◽  
Hard Coating ◽  
Ion Nitriding ◽  
Additional Layer ◽  
Nitrided Surface

Abstract The paper presents the results of a study of one of the ways to increase the wear resistance of “duplex” coatings applied to cutting tools, which are due to preliminary diffusion saturation of the tool surface with nitrogen (known as ion nitriding) followed by physical deposition of a hard coating (Ti, Cr) N. The proposed coating also contains an additional layer with an impurity of ions, deposited on a preliminary nitrided surface of high speed steel before the deposition of a hard coating. Tests were carried out to evaluate the effect of these modified layers on the tool life of the HSS tool. The greatest wear resistance after "triplex" - treatment was achieved during ion implantation of titanium into a pre-nitrided surface. The coefficient of friction of the modified layer was studied at different contact temperatures. Ionic mixing contributes to the appearance of a thin surface layer with an amorphous-like structure, which prolongs the stage of normal wear, which significantly increases the tool life as a result of the self-organization process.

Wear-Resistance of Nitrided W-Mo-High Speed Steel in Abrasive Wear Conditions

2013 ◽  
Vol 594-595 ◽  
pp. 1117-1121
Author(s):  
Мazhyn Skakov ◽  
Bauyrzhan Rakhadilov ◽  
Merey Rakhadilov
Keyword(s):  
Wear Resistance ◽  
Surface Layer ◽  
Abrasive Wear ◽  
High Speed ◽  
Steel Surface ◽  
Plasma Nitriding ◽  
Cutting Tools ◽  
High Speed Steel ◽  
Abrasive Wear Resistance ◽  
R6m5 Steel

In this work the influence of electrolytic-plasma nitriding on the abrasive wear-resistance of R6M5 high-speed steel were under research. We registered that after electrolytic-plasma nitriding on R6M5 steel surface modified layer is formed with 20-40 μm thickness and with increased microhardness of 9000-12200 MPa. Testing mode for the nitrided samples high-speed steel on abrasive wear developed. It is established, that electrolyte-plasma nitriding allows to increase wear-resistance of R6M5 steel surface layer comparing to original. It was determined that abrasive wear-resistance of R6M5 steel surface layer is increased to 25% as a result of electrolytic plasma nitriding. Thus, studies have demonstrated the feasibility and applicability of electrolytic-plasma nitriding in order to improve cutting tools work resource, working under friction and wear conditions.

TNW

Alloy Digest ◽  
1984 ◽  
Vol 33 (12) ◽  
Keyword(s):  
High Speed ◽  
Cutting Tools ◽  
High Speed Steel ◽  
Heat Treating ◽  
Vanadium Content ◽  
Cold Forming ◽  
Molybdenum Steel ◽  
End Mills ◽  
Forming Tools ◽  
Twist Drills

Abstract TNW is a high-speed steel. It has an optimum alloy composition that combines the good toughness characteristics of a high-molybdenum steel and the excellent abrasion resistance provided by a 2% vanadium content. TNW is a popular choice for twist drills, taps, reamers, router bits, end mills and other similar cutting tools. Also its good toughness makes it well suited to punches and other difficult cold-forming tools requiring the properties of a high-speed steel. This datasheet provides information on composition, physical properties, hardness, and elasticity. It also includes information on high temperature performance as well as forming, heat treating, and machining. Filing Code: TS-433. Producer or source: Latrobe Steel Company.

Wear resistance of high-speed steel cutting tools

2012 ◽  
Vol 32 (2) ◽  
pp. 186-188 ◽  
Author(s):  
V. M. Kishurov ◽  
V. N. Ippolitov ◽  
M. V. Kishurov
Keyword(s):  
Wear Resistance ◽  
High Speed ◽  
Cutting Tools ◽  
High Speed Steel ◽  
Steel Cutting

Hardfacing of metal-cutting tools by arc welding in vacuum

2020 ◽  
Vol 2 (99) ◽  
pp. 49-56
Author(s):  
N.V. Ferdinandov ◽  
D.D. Gospodinov
Keyword(s):  
Wear Resistance ◽  
Heat Resistance ◽  
Arc Welding ◽  
High Speed ◽  
Metal Cutting ◽  
Microstructural Analysis ◽  
Cutting Tools ◽  
High Speed Steel ◽  
Heat Treated ◽  
Better Than

Purpose: To present a technology for hardfacing of metal-cutting tools by arc welding in vacuum. Design/methodology/approach: The experiments were carried out using an installation for arc welding in vacuum. Objects of research were metal cutting tools (lathe knives), made of high-speed steel HS6-5-2 on a base metal of structural steel C45. The structure, hardness and wear resistance after hardfacing and after a triple tempering at 560°C have been determined. The heat resistance of the obtained instruments has been examined. Findings: The microstructural analysis showed that the structure of the built-up layer consisted of martensite, retained austenite and carbides. This was confirmed by the values of measured hardness after welding which were about 63-64 HRC. The triple tempering led to an increase in hardness by 3-4 HRC. It was found that the built-up layers (cutting edges of tools) retain their hardness (HRC=63-65) up to a temperature of 615-620°C, which shows that the heat resistance of the build-up layers was similar to that of the hardened and tempered tools of the same steel. The built-up work-pieces (excluding heat treated) and the reference knife showed the same cutting qualities at cutting speeds in the range of 55 to 120 m/min. It has been found that triple tempering after hardfacing led to increased wear resistance and consequently the durability of the tool also increased due to the higher hardness. Practical implications: The practical application is related to the production of metalcutting tools. Originality/value: The proposed technological method allows to produce defects free built-up layers. The cutting properties of the built-up in vacuum layers are comparable to or better than those of new tools made of steel HS 6-5-2.

Wear resistance of coated high-speed steel cutting tools

2012 ◽  
Vol 32 (1) ◽  
pp. 98-101
Author(s):  
V. M. Kishurov ◽  
V. N. Ippolitov ◽  
M. V. Kishurov ◽  
M. Yu. Nekrasova
Keyword(s):  
Wear Resistance ◽  
High Speed ◽  
Cutting Tools ◽  
High Speed Steel ◽  
Steel Cutting

Property Study on High-Speed Steel Deposited TiN Coatings by Magnetron Sputter Ion Plating

2013 ◽  
Vol 275-277 ◽  
pp. 1866-1869 ◽  
Author(s):  
Ning Zhang ◽  
Chun Hong Zhang ◽  
Ying Huai Qiang
Keyword(s):  
Wear Resistance ◽  
Coating Thickness ◽  
High Speed ◽  
High Speed Steel ◽  
Micro Hardness ◽  
X Ray Diffraction ◽  
Ion Plating ◽  
Tin Coatings ◽  
Partial Pressures ◽  
Magnetron Sputter

TiN coatings were deposited by Magnetron Sputter Ion Plating (MSIP) on the surface of high-speed steel W18Cr4V.The microstructure,coating thickness, micro-hardness and wear resistance of surface modification sample were investigated by the D/MAX-ⅢB X-ray diffraction tester, the coating thickness tester, the HV-1000 micro-sclerometer,the LKDM－2000 friction and wear tester,the S-3000N scaning electron microscopy.The influence of sputtering time,N2 partial pressures and sputtering current on the microstructure,coating thickness, micro-hardness and wear resistance of TiN coatings were also analysed.The best synthesis performance sputtering coatings of technologic scheme was established.

CPM REX M4

Alloy Digest ◽  
1973 ◽  
Vol 22 (11) ◽  
Keyword(s):  
Wear Resistance ◽  
Physical Properties ◽  
High Speed ◽  
High Speed Steel ◽  
Heat Treating ◽  
High Wear Resistance ◽  
Excellent Quality ◽  
Metallurgy Process ◽  
Specialty Metals

Abstract CPM REX M4 is a special-purpose high-speed steel designed to give high wear resistance in tools. It is made exclusively by Crucible's particle metallurgy process which imparts excellent quality and grindability. This datasheet provides information on composition, physical properties, hardness, and elasticity. It also includes information on forming, heat treating, and machining. Filing Code: TS-264. Producer or source: Crucible Specialty Metals Division, Colt Industries.

MOLITE 4

Alloy Digest ◽  
1985 ◽  
Vol 34 (9) ◽  
Keyword(s):  
Wear Resistance ◽  
High Speed ◽  
Thin Sheet ◽  
High Speed Steel ◽  
Heat Treating ◽  
Cold Extrusion ◽  
High Wear Resistance ◽  
Red Hardness ◽  
Twist Drills ◽  
Very High

Abstract MOLITE 4 is a high-carbon, high-vanadium, tungsten-molybdenum high-speed steel that approaches the ultimate in wear resistance for high-speed steels in this group. The advantages in using this steel comprise (1) Very high wear resistance, (2) High red hardness, (3) Good toughnes and (4) Moderate grindability. Among its many uses are punches and dies for blanking and forming thin sheet, milling cutters, twist drills, reamers, forming rolls, cold-extrusion punches and draw dies. This datasheet provides information on composition, physical properties, hardness, and elasticity. It also includes information on forming, heat treating, and machining. Filing Code: TS-447. Producer or source: Columbia Tool Steel Company.

Sign in / Sign up

Export Citation Format

Share Document