Wear resistance of tin-coated hard-metal tools

1980 ◽  
Vol 19 (7) ◽  
pp. 468-470
Author(s):  
V. T. Bondar'
Keyword(s):  
Wear Resistance ◽  
Hard Metal ◽  
Metal Tools

Cobalt exposure in wet grinding of hard metal tools for wood manufacture

1994 ◽  
Vol 150 (1-3) ◽  
pp. 117-119 ◽  
Author(s):  
G. Sesana ◽  
G. Cortona ◽  
A. Baj ◽  
T. Quaianni ◽  
E. Colombo
Keyword(s):  
Hard Metal ◽  
Wet Grinding ◽  
Cobalt Exposure ◽  
Metal Tools

Effects of Substrate Bias Voltages on the Erosion Wear Resistance of TiN Coatings Deposited by Pulsed Filtered Vacuum Cathode Arc Deposition

2010 ◽  
Vol 443 ◽  
pp. 481-486 ◽  
Author(s):  
Feng Fang Wu ◽  
Jian Xin Deng ◽  
Pei Yan
Keyword(s):  
Wear Resistance ◽  
Erosion Rate ◽  
Average Diameter ◽  
Hard Metal ◽  
Solid Particles ◽  
Wear Loss ◽  
Erosion Wear ◽  
Tin Coatings ◽  
Cathode Arc ◽  
Arc Deposition

TiN coatings were produced on substrates of a hard metal at different bias by pulsed filtered vacuum cathode arc deposition assisted with ion bombardment. The erosion wear resistance of TiN coatings was investigated. The erosion wear was tested with a gas blast apparatus. In the test, TiN coatings were impacted at an impingement angle of 90° by angular SiC solid particles with an average diameter of 124um. The maximum depth of the erosion scar measured by the Veeco NT9300 optical profiler was used to evaluate the erosion wear loss of the coatings. The coatings proved to have lower erosion rate than the substrate material and consequently, the erosion rate increased significantly to the high level of the hard metal substrate after the coatings were penetrated. The results indicated that the TiN coating deposited at 150V bias had the lowest erosion wear rate and best wear resistance. The failure mechanism was revealed by examining the surface morphology of the coatings before and after the erosion test. The erosion wear of the TiN coatings behaved as typical brittle materials.

scholarly journals PCBN Performance in High Speed Finishing Turning of Inconel 718

Metals ◽  
2018 ◽  
Vol 8 (8) ◽  
pp. 582 ◽  
Author(s):  
José Díaz-Álvarez ◽  
Víctor Criado ◽  
Henar Miguélez ◽  
José Cantero
Keyword(s):  
Tool Wear ◽  
Inconel 718 ◽  
High Speed ◽  
Cubic Boron Nitride ◽  
Hard Metal ◽  
Abrasive Tool ◽  
Polycrystalline Cubic Boron Nitride ◽  
Metal Tools ◽  
Pcbn Tools ◽  
Cutting Speeds

Inconel 718 is a Ni superalloy widely used in high responsibility components requiring excellent mechanical properties at high temperature and elevated corrosion resistance. Inconel 718 is a difficult to cut material due to the elevated temperature generated during cutting, its low thermal conductivity, and the strong abrasive tool wear during cutting process. Finishing operations should ensure surface integrity of the component commonly requiring the use of hard metal tools with sharp tool edges and moderate cutting speeds. Polycrystalline cubic boron nitride (PCBN) tools recently developed an enhanced toughness suitable for these final operations. This paper focuses on the study of PCBN tools performance in finishing turning of Inconel 718. Several inserts representative of different manufacturers were tested and compared to a reference carbide tool. The evolution of tool wear, surface roughness, and cutting forces was analyzed and discussed. PCBN tools demonstrated their suitability for finishing operations, presenting reasonable removal rates and surface quality.

Diamond Like Structure Nano Carbonitrides Hardening of Hard Alloys Cutting Tools

2012 ◽  
Vol 428 ◽  
pp. 65-68 ◽  
Author(s):  
Y.A. Minaev
Keyword(s):  
New Technology ◽  
Cutting Tools ◽  
Fundamental Property ◽  
Hard Metal ◽  
Hard Alloys ◽  
Crystalline Materials ◽  
First Order Phase Transition ◽  
Hard Metals ◽  
First Order Phase ◽  
Metal Tools

The fundamental property of solid crystalline materialsi.e.phenomena of first-order phase transition of grain boundaries with formation of two-dimensional liquid have been used for elaboration of the new technology. Nitriding type methods have been used to develop strategies for effective forming of coatings by synthesis of nitrides and carbonitrides on surface layers of hard metals. WC-Co and WC-TiC-Co hard metal tools have been used for experiments. Industrial tests indicated that the tools functional properties improved 2-9 times. The new tools demonstrated a high resistance to surface wear and to fragile break–down. The formed layers, interface and binder behaviour have been investigated through the experiments with use of optic and electron microscope, X-ray phase analysis and micro-hardness device measures. The layer microstructure investigation demonstrates: the hardening of thin surface layer (0.1-0.3 mm) by nanosize carbonitrides with diamond like structure and strengthening of the following layer by recristallization of W carbides grains and by formation of coherent structure in Co-binder.

Diamond as a wear-resistant coating

1993 ◽  
Vol 342 (1664) ◽  
pp. 297-311 ◽  
Keyword(s):  
Raw Materials ◽  
Low Cost ◽  
Chemical Vapour ◽  
Polycrystalline Diamond ◽  
Low Pressure ◽  
Hard Metal ◽  
Composite Powders ◽  
Cvd Diamond Coating ◽  
Metal Tools

Refractory chemical vapour deposition (CVD) coatings strongly improve the performances of hard metal tools. Low-pressure diamond synthesis permits both in situ CVD diamond coating and freestanding low-pressure diamond sheet fabrication. The performance of coated and freestanding bonded diamond layer tools approaches those of commercial polycrystalline diamond (PCD) products. Low-pressure diamond grits and new composite powders could provide new and extraordinary grinding powders of raw materials for novel types of PCD composites. Commercial production is now mainly a scaling-up problem. Reliable and low-cost fabrications are among the most important requirements. As these applications tolerate the use of poly crystalline layers, they are likely to be between those industrial low-pressure diamond products having soon a significant market share.

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