Due to the tendency of titanium alloy material to fill grinding wheel, it brings difficulties to the grinding of titanium alloy rod and TC4 titanium alloy. During grinding, the higher temperature rise generated on the interface between metal and grinding wheel makes the grinding surface produce higher residual stress, and the surface finish is not ideal.

These difficulties can be largely resolved by:

(1) Choose the right grinding wheel, such as silicon carbide grinding wheel, sand size is medium (60~80), hardness is medium (J~M), surface speed is 700~1200m/min, alumina (alumina powder or corundum) grinding wheel should be used at a lower speed, such as 550~600min. Medium granularity is also required.

(2) Use lower grinding wheel speed and feed speed; Due to the low speed of the grinding wheel, less sparks are generated.

(3) with buffer or cutting liquid cooling agent cooling, with ceramic bond and chlorinated or vulcanized cutting oil, you can obtain good results. No matter what type of coolant is used, it should be well filtered to eliminate "fishtail" stains caused by titanium particle recycling.

(4) The titanium spark may catch fire when it encounters oil mist, but the oil is fully immersed in the workpiece, which can reduce this risk. The rustproof ammonium nitrite aqueous solution completely eliminates the risk of fire.

However, even optimal grinding conditions can reduce the fatigue performance of the workpiece.