Estimation of grinding temperature is essential for the better understanding of the grinding process. The present study attempts to correlate the carbon depletion in mild steel chips to the heat produced at the grinding zone. A database is generated by heating the workpiece material to various temperatures and studying the carbon content. After grinding, the carbon content in the chip is estimated and compared against this base data of carbon content vs. the temperature of the parent material. The carbon content gives an estimate of the temperature that the chip would have undergone during grinding.

No abstract

Many minerals used in the form of grains in industry, such as abrasives and refractories, are formed by crushing a large mass of fused material. The process of crushing leads to dust formation; this dust becomes adsorbed onto the grains. Many incoming material inspection standards do not cover dust testing. Dust is detrimental to further use of the granular particles. The present study describes a simple instrument to test dust in granular materials and illustrates its utility in solving a rejection problem that occurred during abrasive wheel manufacturing.