Most of the traditional screw production with the use of titanium alloy billets hexagonal lathe turning several working steps, and some use of CNC machining methods to the production, its shortcomings are as follows: 1, are used directly turning titanium alloy billets, material waste larger. 2, titanium materials are hard-to-cut materials, cutting tool all the time and improve the cost. 3, due to the material without the temper Forge, titanium materials failed to give full play to the fine features.

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