scholarly journals Cutting Performance of (Ti,V)N Coated Cemented Carbide Tools. Tool Wear in Cutting of Stainless Steel.

2002 ◽  
Vol 49 (11) ◽  
pp. 984-988 ◽  
Author(s):  
Tadahiro Wada ◽  
Takaomi Toihara
Keyword(s):  
Stainless Steel ◽  
Tool Wear ◽  
Cutting Performance ◽  
Cemented Carbide ◽  
Cemented Carbide Tools ◽  
Coated Cemented Carbide

Tool Wear of Aluminum/Chromium/Tungsten-Based-Coated Cemented Carbide in Cutting Hardened Steel

2015 ◽  
Vol 798 ◽  
pp. 377-383 ◽  
Author(s):  
Tadahiro Wada ◽  
Hiroyuki Hanyu
Keyword(s):  
Tool Wear ◽  
Cathode Material ◽  
Hardened Steel ◽  
Cemented Carbide ◽  
Coating Film ◽  
Carbide Tool ◽  
Micro Hardness ◽  
Cemented Carbide Tools ◽  
Coated Carbide ◽  
Coated Cemented Carbide

An aluminum/chromium based coating film, called (Al,Cr)N coating film, has been developed. This coating film has a slightly more inferior critical scratch load and micro-hardness. Therefore, to improve both the scratch strength and micro-hardness of the (Al,Cr)N coating film, the cathode material of an alumi-num/chromium/tungsten target was used in adding the tungsten (W) to the cathode material of the alumi-num/chromium target. To clarify the effectiveness of the aluminum/chromium/tungsten-based coating film, we measured the thickness, micro-hardness and critical scratch strength of aluminum/chromium/tungsten-based coating film formed on the surface of a substrate of cemented carbide ISO K10 formed by the arc ion plating process. The hardened steel ASTM D2 was turned with the (Al,Cr,W)N, (Al,Cr,W)(C,N), (Al,Cr)N and the (Ti,Al)N coated cemented carbide tools. The tool wear of the coated cemented carbide tools was ex-perimentally investigated. The following results were obtained: (1) The micro-hardness of the (Al,Cr,W)N or (Al,Cr,W)(C,N), (Al,Cr)N coating film was 3110 HV0.25N or 3080 HV0.25N, respectively. (2) The critical scratch load of the (Al,Cr,W)(C,N) coating film was 123 N, which was much higher than that of the (Al,Cr)N or (Ti,Al)N coating film. (3) In cutting the hardened steel using (Al,Cr,W)(C,N) and (Ti,Al)N coated carbide tools, the wear progress of the (Al,Cr,W)(C,N) coated carbide tool was almost equivalent to that of the (Ti,Al)N coated carbide tool. The above results clarify that the aluminum/chromium/tungsten-based coating film, which is a new type of coating film, has both high hardness and good adhesive strength, and can be used as a coating film of WC-Co cemented carbide cutting tools.

Effect of Boron Concentration on Adhesion and Cutting Performance of Diamond-Coated Cemented Carbide Tools

2008 ◽  
Vol 375-376 ◽  
pp. 138-142 ◽  
Author(s):  
Cheng Zhi Yao ◽  
Fang Hong Sun ◽  
Zhi Ming Zhang ◽  
Ming Chen
Keyword(s):  
Surface Morphology ◽  
Adhesive Strength ◽  
Boron Concentration ◽  
Diamond Films ◽  
Indentation Test ◽  
Cutting Performance ◽  
Cemented Carbide ◽  
Average Grain Size ◽  
Cemented Carbide Tools ◽  
Coated Cemented Carbide

Diamond thin films doped with various boron concentrations were grown on WC-Co cemented carbide tools by hot-filament-assisted chemical vapor deposition (HFCVD). The trimethyl borate dissolved in acetone solution was used as the boron resource (B/C=0%, 0.1%, 0.3%, 0.5%). The surface morphology of diamond films with different boron contents was investigated by Scanning electron microscopy, the adhesive strength was calculated by means of indentation test under a load of 1500N. A real cutting performance was carried out on Al metal matrix composites material (20vol%SiC, 15μm), and the insert flank wear was examined by measuring the scars that appeared on the cutting edge with tool microscope. The research results shown the surface morphology and structure of the diamond films changed owing to boron doping. As the doping levels increased, the average grain size of the films decreased from 10 to 2μm. A significant improvement in adhesion and cutting performance were observed as the boron contents increased from 0% to 0.5%. The adhesion and cutting performance were best when the boron concentration was 0.3%. Adequate boron can effectively suppress the cobalt diffusion to the substrate surface and avoid the catalytic effect of cobalt at the high temperature. It is of great significance for improvement of the adhesive strength and cutting performance of diamond-coated tools using above method.

scholarly journals The Performance of TiAlSiN Coated Cemented Carbide Tools Enhanced by Inserting Ti Interlayers

Metals ◽  
2019 ◽  
Vol 9 (9) ◽  
pp. 918 ◽  
Author(s):  
Guodong Li ◽  
Liuhe Li ◽  
Mingyue Han ◽  
Sida Luo ◽  
Jie Jin ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Finite Element Method ◽  
Finite Element ◽  
Inconel 718 ◽  
Cutting Performance ◽  
Cemented Carbide ◽  
Multilayer Coatings ◽  
Interlayer Thickness ◽  
Cemented Carbide Tools ◽  
Coated Cemented Carbide

To enhance the cutting performance of TiAlSiN coated cemented carbide tools by inserting Ti interlayers and to explore their mechanism, TiAlSiN/Ti multilayer coatings with different Ti thicknesses, including 0 nm, 25 nm, 50 nm, 100 nm, and 150 nm, were deposited onto cemented carbide (WC-10 wt%, Co) substrates by high power impulse magnetron sputtering (HiPIMS). The microstructure, hardness, grain orientation, residual stress, adhesion, and toughness of those coatings were measured, and the cutting performance against Inconel 718 was analyzed. Meanwhile, finite element method (FEM) indentation simulations were performed to gain detailed insight into the effects of Ti interlayer thickness on mechanical properties of TiAlSiN/Ti multilayer coatings. Results demonstrated that mechanical properties of TiAlSiN multilayer coatings were significantly changed after the Ti interlayer was introduced, and the multilayer coating #M2 with 25 nm Ti layer showed the excellent toughness and adhesion without sacrificing hardness too much. As Ti interlayer thickness increased, both toughness and adhesion decrease owing to the plastic mismatch between individual layers, and these changes were discussed detailedly with finite element method. Moreover, the result of the cutting experiment also revealed that the tool flank wear Vb can be reduced by the multilayer structure. This improvement is believed to be due to the increasing toughness, which alleviated the damage caused by the continuous impact load of hard phases generated by Inconel 718 during cutting.

Performance of PVD TiN/TaN and TiN/NbN superlattice coated cemented carbide tools in stainless steel machining

1998 ◽  
Vol 105 (1-2) ◽  
pp. 51-55 ◽  
Author(s):  
T.I Selinder ◽  
M.E Sjöstrand ◽  
M Nordin ◽  
M Larsson ◽  
Å Östlund ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Cemented Carbide ◽  
Cemented Carbide Tools ◽  
Coated Cemented Carbide
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