Grinding cast-iron-bonded diamond

Comparison of grinding ratio between cast iron-bonded diamond (CIB-D) wheel and resinoid wheel. 

Grinding wheel Cast-iron-bonded diamond wheel ( 325, 600, 1200, 2000, 4000, 8000, and 30000)... 

Cast-Iron-Bonded Diamond. These wheels are manufactured by mixing diamond abrasive, cast-iron powder or fibers, and a small amount of carbonyl iron powder. The compound is shaped in the desired form under a pressure of 6-8 t/cm, and then sintered in an atmosphere of ammonia. These wheels are not suited for continuous grinding for long... 

Zhang, C., Ohmori, H., Marinescu, I., and Kato, T., Grinding of ceramic coatings with cast iron bond diamond wheels. A comparative study ELID and rotary dresser. International Journal of Advanced Manufacturing Technology, Vol. 18, 2001b, pp. 545-552. 

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. 

The experiments were conducted on a vertical rotary surface grinder with a 5.5 kW motor spindle. The feed can be continuously adjusted within a range. The workpieces were made from intered sintered reaction-bonded silicon nitride (SRBSN) and cast-and-sintered silicon nitride (Si3N4). The grain size was between 0.3 and 0.4 pm for SRBSN and between 0.6 and 0.8 pm for SiaN4. Cast-iron fiber-bonded diamond wheels of 200 mm diameter were used. A Noritake AFG-M grinding fluid at a rate of 20-30 L/min was used as electrolytic fluid. 

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