ELID-grinding wheel

Tribological Properties of ELID-Grinding Wheel Based on In-Process Observation Using a CCD Microscope Tribosystem... 

The study of wear properties of the ELID-grinding wheel for multipoint contact was based on an in-process observation using a CCD microscope tribosystem. The following conclusions were drawn ... 

Introduction of multi-axis machines for freeform machining Introduction of PC-based controls Introduction of electrolytic in-process dressing (ELID) of grinding wheels Improved enviromnental control by air-conditioning of machine housings In the 2000s ... 

Conventional grinding and ELID grinding were performed with CIFB-D grinding wheels of grit size 170 under different grinding conditions such... 

Wheel Type Conventional Grinding ELID Grinding... 

The next series of experiments were performed using diamond grinding wheels with a range of abrasive friability. Diamond grinding wheels with MBG 660, RVG, and MBG 600 diamonds were employed. RVG diamond is the most friable and MBG 660 the least friable. The bond material for all the wheels was steel. The grinding ratio for all these wheels and the cast iron powder-bonded wheels was determined for ELID grinding and for conventional grinding. The results are presented in Table 5.1. 

Ground surfaces were also observed imder AFM. The observed surface area was 18 x 18 ijum. The change in surface topography can be observed using AFM. The AFM surface topography also shows that the material was predominantly removed in the ductile mode when ELID grinding was done using a 4000 mesh wheel or finer. The surface finish obtained from the AFM study is presented in Table 5.3 [27]. 

TGE ELID ground with 6000 SD-CIB wheel after transverse grinding TEH Heat treated after ELID grinding... 

A mirror surface was achieved on silicon nitride materials when ELID grinding was performed using a 4000 grit-size wheel. The finish ELID technology will find wide application in the optical and semiconductor industries such as mirror finishing of silicon wafers, many kinds of ceramics, ferrite, and glass. 

SEM and AEM studies reveal that the work piece was predominantly groimd in the ductile mode when ELID grinding was performed with a 4000 grit-sized wheel or finer. 

The authors express their sincere thanks to the industrial members of the ELID research project for their financial support. Part of the research project was supported by the U.S. Department of Energy. Special thanks to Fuji Die Co. Ltd., Toyko, Japan, for supplying grinding wheels and Ikegami Mold of America and RIKEN authorities for their financial support. The authors also thank Ms. Joyce Medalen for preparing the manuscript. 

ELID grinding was first proposed in 1988, and a number of reports describing the advantages of this process have been published [1-14]. The basic construction of the ELID grinding system is shown in Figure 6.1. The essential elements of the ELID system include (a) a metal-bonded grinding wheel, (b) an electric power source, and (c) an electrolytic coolant. The most important feature is at there is no requirement for a special machine. 

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