Int. J. of Nanomanufacturing   »   2013 Vol.9, No.2

 

 

Title: The electrical behaviour of the dressing process in ELID-grinding

 

Authors: Bruno Kersschot; Jun Qian; Dominiek Reynaerts

 

Addresses:
Department of Mechanical Engineering, KULeuven, Celestijnenlaan, 300B b2420 3001 Leuven, Belgium
Department of Mechanical Engineering, KULeuven, Celestijnenlaan, 300B b2420 3001 Leuven, Belgium
Department of Mechanical Engineering, KULeuven, Celestijnenlaan, 300B b2420 3001 Leuven, Belgium

 

Abstract: During ELID-grinding, the metallic wheel is kept sharp through an electrolytic dressing process in which a layer is grown on top of the wheels surface. The electrolysis process can be modelled electrically using the Helmholtz representation of a boundary layer. Measurements show that at the start of the (pre-)dressing the capacitance of the system is at its highest value, above 10 µF. After a while, it drops significantly to a level below 1 µF. This signifies a change in the metal-electrolyte interface and the grinding wheel is covered with a layer of (hydr-)oxides. The model is refined in two ways. Firstly, the capacitance between the two metallic electrodes is added. Secondly, the self-inductance of the power cables is included. With the proposed model it is possible to properly simulate the electrical behaviour of the growth of the layer. It also provides a fundamental insight into the electrolytic dressing process.

 

Keywords: electrolytic in-process dressing; ELID grinding; passivation; electrical modelling; dressing process; oxide layer; grinding wheels; electrolysis; metal-electrolyte interface; simulation.

 

DOI: 10.1504/IJNM.2013.055144

 

Int. J. of Nanomanufacturing, 2013 Vol.9, No.2, pp.137 - 147

 

Submission date: 31 Oct 2012
Date of acceptance: 13 Jan 2013
Available online: 17 Jul 2013

 

 

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