Experimental investigation on the machinability of nodular ductile iron with cubic boron nitride and tungsten carbide inserts

2020 ◽  
Author(s):  
K.M. Kumar ◽  
K. Arun ◽  
N. Sathishkumar ◽  
M. Pathri Narayanan ◽  
E. Raviraj
Keyword(s):  
Experimental Investigation ◽  
Boron Nitride ◽  
Tungsten Carbide ◽  
Ductile Iron ◽  
Cubic Boron Nitride ◽  
Carbide Inserts ◽  
And Tungsten

scholarly journals Hard machining of agricultural machines parts

2013 ◽  
Vol 59 (Special Issue) ◽  
pp. S42-S48
Author(s):  
R. Drlička ◽  
J. Žarnovský ◽  
R. Mikuš ◽  
I. Kováč ◽  
M. Korenko
Keyword(s):  
Boron Nitride ◽  
Cubic Boron Nitride ◽  
Machining Parameters ◽  
Surface Layers ◽  
Cutting Ceramics ◽  
Machining System ◽  
Cutting Inserts ◽  
Machine Elements ◽  
Hard Structures ◽  
Carbide Inserts

For the renovation and/or improvement of the surface properties of machine elements, hard facing is often used. Hard structures obtained in layers or by heat treatment achieve a hardness of up to 68 hardness (HRC) or even more. The grinding of these surfaces demands the use of processing fluids and causes sometimes changes in the surface layers structure. Hard turning can replace grinding when certain requirements are fulfilled, particularly tough machining system. Hard deposits of two weld-on materials on a sample of steel grade S235JRG1 have been turned using cemented carbide inserts with a TiAlN coating of PVD type. The surface roughness measurements along with the observation of insert wear have been conducted to find proper machining parameters and conditions for this application. Cutting inserts manufacturer guidelines for special application could be insufficient or even not provided. Besides that, it is necessary in the experiments to take into account and examine the cutting ceramics and cubic boron nitride (CBN)/polycrystalline cubic boron nitride (PCBN).

Dissimilar laser brazing of boron nitride and tungsten carbide

2010 ◽  
Vol 31 (4) ◽  
pp. 2071-2077 ◽  
Author(s):  
Yoshihisa Sechi ◽  
Takuya Tsumura ◽  
Kazuhiro Nakata
Keyword(s):  
Boron Nitride ◽  
Tungsten Carbide ◽  
Laser Brazing ◽  
And Tungsten

Microstructure and Properties of Hot-Pressing Sintered Tungsten Carbide Composites by Adding Cubic Boron Nitride

2015 ◽  
Vol 655 ◽  
pp. 45-48
Author(s):  
Kun Li ◽  
Hai Yan Chen ◽  
Qiu Shuang He ◽  
Li Hua Dong
Keyword(s):  
Mechanical Properties ◽  
Boron Nitride ◽  
Flexural Strength ◽  
Tungsten Carbide ◽  
Vickers Hardness ◽  
Hot Pressing ◽  
Cubic Boron Nitride ◽  
Microstructure And Mechanical Properties ◽  
Hot Pressing Sintering ◽  
Sintering Method

(0, 5, 10, 15, 20) vol% CBN-WC/Co composites were consolidated by ball milling and the following hot-pressing sintering method. WC, Co and CBN powders were used as the starting materials. The effects of the CBN content on the density, microstructure and mechanical properties of CBN-WC/Co composites were investigated. The results showed that the CBN content had remarkable influence on the microstructure and mechanical properties of CBN-WC/Co Composites. With the increasing content of CBN, the density decrease, while Vickers hardness and flexural strength increased initially to the maximum values and then decreased at CBN 10 vol%. When 10 vol% CBN-WC/Co powders were hot-pressing sintered at 1350°C and 20MPa for 90 min, an excellent Vickers hardness of 19.8GPa was achieved, combining a flexural strength of 682MPa.

PREDICTION AND INVESTIGATION OF SURFACE ROUGHNESS WHILE TURNING SG IRON WITH CUBIC BORON NITRIDE (CBN) AND TUNGSTEN CARBIDE INSERTS

2017 ◽  
Vol 41 (1) ◽  
pp. 129-141 ◽  
Author(s):  
K.M. Kumar ◽  
P. Hariharan
Keyword(s):  
Surface Roughness ◽  
Boron Nitride ◽  
Tungsten Carbide ◽  
Cubic Boron Nitride ◽  
Cutting Speed ◽  
Depth Of Cut ◽  
Spheroidal Graphite ◽  
Surface Model ◽  
Sg Iron ◽  
The Impact

This work compares the effect of cubic boron nitride (CBN) and multilayer (TiCN+Al2O3+TiN) coated tungsten carbide (WC) tools during the turning of spheroidal graphite (SG) nodular iron. Nodular irons have more ductility which is required in mechanical components that demand high fatigue resistance like crankshafts, cam shafts, bearing caps and clutch housings. The impact of various process parameters like the depth of cut, cutting speed and feed on the surface roughness (Ra) of SG iron is studied and optimized using the response surface model. The chip morphology is also discussed for evaluation of the quality of the turned surface. The experimental outcomes reveal that the WC tool offers a high surface finish at the optimal combination of the cutting speed at 102 meter/minute, feed at 0.051 millimeter/revolution and depth of cut at 0.5 millimeter and that, for the CBN insert, at 245 meter/minute of cutting speed, 0.051 millimeter/revolution of feed and 0.75 millimeter of depth of cut.

Electron beam activated brazing of cubic boron nitride to tungsten carbide cutting tools

Vacuum ◽  
2001 ◽  
Vol 62 (2-3) ◽  
pp. 171-180 ◽  
Author(s):  
Jan Felba ◽  
Kazimierz P Friedel ◽  
Peter Krull ◽  
Igor L Pobol ◽  
Helmut Wohlfahrt
Keyword(s):  
Electron Beam ◽  
Boron Nitride ◽  
Tungsten Carbide ◽  
Cubic Boron Nitride ◽  
Cutting Tools

Cutting performance of cubic boron nitride-coated tools in dry turning of hardened ductile iron

2020 ◽  
Vol 56 ◽  
pp. 158-168 ◽  
Author(s):  
Luqiang Tu ◽  
Shuai Tian ◽  
Feng Xu ◽  
Xue Wang ◽  
Chenhui Xu ◽  
...  
Keyword(s):  
Boron Nitride ◽  
Ductile Iron ◽  
Cubic Boron Nitride ◽  
Cutting Performance ◽  
Dry Turning ◽  
Coated Tools
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