Titanium alloy materials have a tendency to fill the grinding wheel, which brings difficulties to the grinding of titanium alloy rods and TC4 titanium alloys. During grinding, the higher temperature rise generated at the interface between the metal and the grinding wheel causes the grinding surface to produce Higher residual stress, at the same time, the surface finish is not ideal.

These difficulties can be basically solved by adopting the following methods:

(1) Select a suitable grinding wheel, such as a silicon carbide grinding wheel, with a medium grain size (60 ~ 80), medium hardness (J ~ M), surface speed of 700 ~ 1200m / min, and alumina (aluminum oxide or corundum) Grinding wheels should be used at lower speeds, such as 550 ~ 600min. Medium granularity is also required.

(2) Use a lower wheel speed and feed speed; because the wheel speed is low, less sparks are generated.

(3) Cooling with buffering agent or cutting fluid coolant, and using ceramic bonding agent and chlorinated or vulcanized cutting oil, good results can be obtained. No matter what type of coolant is used, it must be well filtered to eliminate "fishtail" -like stains caused by the recycling of titanium particles.

(4) Titanium Mars may catch fire when encountering oil mist, but immersing the workpiece with oil completely can reduce this danger. The anti-rust ammonium nitrite solution can completely eliminate the risk of fire.

But even the best grinding conditions will reduce the fatigue performance of the workpiece.