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Process Know-how For Processing Titanium Alloys

Posted by: CCHEN JIANG 2020-05-25 Leave a comment

The main process know-how for processing titanium alloy is as follows:
(1) The use of positive-angle geometry inserts to reduce cutting forces, cutting heat and workpiece deformation.
(2) Maintain a constant feed to avoid the hardening of the workpiece. During cutting, the tool should always be in the feed state. The radial feed amount a e should be 30% of the radius during milling.
(3) High-pressure and large-flow cutting fluid is used to ensure the thermal stability of the machining process and prevent the workpiece surface from being denatured and tool damage due to excessive temperature.
(4) Keep the blade edge sharp and blunt tools are the cause of heat build-up and wear, which can easily lead to tool failure.
(5) As far as possible, the titanium alloy is processed in the softest state, because the material becomes more difficult to process after hardening, and heat treatment increases the strength of the material and increases blade wear.
(6) Use a large tip radius or chamfer to cut in as many cutting edges as possible. This can reduce the cutting force and heat at each point and prevent local damage. When milling titanium alloys, the cutting speed has the greatest influence on the tool life v c among various cutting parameters, followed by the radial tool consumption (milling depth) a e.

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