Under the conditions of nitrogen-oil mixture, cooled nitrogen and cooled nitrogen-oil mixture, the milling force experiments on high speed milling of Ti alloy TC4 were contrastingly done.

• 发现低温氮气和低温氮气油雾相比常温氮气油雾能有效地降低铣削力，而低温氮气油雾的效用更加明显。