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

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

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.

Effect of diamond dressing on the state of the surface layers of high-speed steel cutting tools

1972 ◽  
Vol 4 (6) ◽  
pp. 516-518
Author(s):  
V. Ya. Bulanov ◽  
A. P. Shevel ◽  
P. A. Yudkovskii
Keyword(s):  
High Speed ◽  
Cutting Tools ◽  
High Speed Steel ◽  
The State ◽  
Surface Layers ◽  
Steel Cutting

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.

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.

Study of the Wear of Drills in Dry Drilling of NM360 Steels

2013 ◽  
Vol 652-654 ◽  
pp. 2169-2172
Author(s):  
Ming San Xu ◽  
Ji Bin Jiang ◽  
Guang Cun Wang
Keyword(s):  
Abrasive Wear ◽  
High Speed ◽  
Flank Wear ◽  
Adhesive Wear ◽  
Cutting Tools ◽  
High Speed Steel ◽  
Twist Drill ◽  
Drilling Performance ◽  
Edge Wear ◽  
Steel Cutting

According to the characteristics of NM360, a contrast experiment for drilling performance in YG8 cemented carbide twist drill, high-speed steel twist drill and factories used in coating the ordinary high-speed steel twist drill has been done. Using microscope to observe tool wear, we found that the flank wear and chisel edge wear are the main wear of the drill. The carbide tools has a better ability of resistance to plastic deformation, abrasive wear and adhesive wear than high-speed steel cutting tools. The coating tools are better to resist abrasive wear and adhesive wear than uncoated tools.Deformation of carbide cutting tools, abrasive wear, ability than high-speed steel cutting tools.

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