Grinding performance evaluation of porous composite-bonded CBN wheels for Inconel 718

Abstract For high-efficiency grinding of difficult-to-cut materials such as titanium and nickel alloys, a high porosity is expected and also a sufficient mechanical strength to satisfy the function. However, the porosity increase is a disadvantage to the mechanical strength. As a promising pore forming agent, alumina bubbles are firstly induced into the abrasive layer to fabricate porous cubic boron nitride (CBN) wheels. When the wheel porosity reaches 45%, the bending strength is still high up to 50 MPa with modified orderly pore distribution. A porous CBN wheel was fabricated with a total porosity around 30%. The grinding performance of the porous composite-bonded CBN wheel was evaluated in terms of specific force, specific grinding energy, and grinding temperature, which were better than those of the vitrified one under the same grinding conditions. Compared to the vitrified CBN wheel, clear straight cutting grooves and less chip adhesion are observed on the ground surface and there is also no extensive loading on the wheel surface after grinding.

[1]  Barbara Linke,et al.  Dressing process model for vitrified bonded grinding wheels , 2008 .

[2]  Daniela Herman,et al.  Influence of vitrified bond structure on radial wear of cBN grinding wheels , 2009 .

[3]  Zhixiong Zhou,et al.  Three-dimension surface characterization of grinding wheel using white light interferometer , 2011 .

[4]  Anil K. Srivastava,et al.  An experimental investigation of temperatures during conventional and CBN grinding , 2007 .

[5]  B. Latella,et al.  Interface fracture surface energy of sol–gel bonded silicon wafers by three-point bending , 2011, Journal of Materials Science: Materials in Electronics.

[6]  Dengsheng Zhang,et al.  Research on surface integrity of grinding Inconel718 , 2013 .

[7]  J. Zhang,et al.  An experimental investigation of affected layers formed in grinding of AISI 52100 steel , 2011 .

[8]  A. Tsukuda,et al.  Influence of Porosity on Grinding Performance of Porous Cast-iron Bonded Diamond Grinding Wheel made by Pulse Electric Current Sintering Method , 1999 .

[9]  Wenfeng Ding,et al.  Fabrication and performance of porous metal-bonded CBN grinding wheels using alumina bubble particles as pore-forming agents , 2013 .

[10]  Tae Jo Ko,et al.  A study of WC end-milling manufacturing and cutting ability evaluation by using powder injection molding , 2009 .

[11]  Zhengyang Xu,et al.  Improving machining accuracy of electrochemical machining blade by optimization of cathode feeding directions , 2013 .

[12]  I. Buj-Corral,et al.  Improvement of the manufacturing process of abrasive stones for honing , 2013 .

[13]  N. Suh,et al.  Abrasive wear mechanisms and the grit size effect , 1979 .

[14]  Seongwong Kim,et al.  Mechanical properties of new vitrified bonds for cBN grinding wheel , 2009 .

[15]  M. Tricard,et al.  Innovations in Abrasive Products for Precision Grinding , 2004 .

[16]  W. B. Rowe,et al.  The Effect of Porosity on the Grinding Performance of Vitrified CBN Wheels , 2003 .

[17]  T. Tanaka.  New development of metal bond Diamond wheel with pore by the growth of bonding bridges , 1992 .

[18]  Y. Harigaya,et al.  Grinding of Super-Alloys Using Metal-Bonded CBN Wheel , 2012 .

[19]  T. Luping.  A study of the quantitative relationship between strength and pore-size distribution of porous materials , 1986 .

[20]  Su Honghua,et al.  Grindability and Surface Integrity of Cast Nickel-based Superalloy in Creep Feed Grinding with Brazed CBN Abrasive Wheels , 2010 .

[21]  Y. Kondo,et al.  Fabrication of New Porous Metal-Bonded Grinding Wheels by Hip Method and Machining Electronic Ceramics , 1997 .

[22]  Z. M. Wang,et al.  The machinability of nickel-based alloys: a review , 1999 .