Tool for turning of titanium alloys
AssigneeSadvik AB
InventorsIngemar Hessman, Bjorn Olsson, Carl-Goran Petersson
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Abstract
An insert for turning of titanium is provided. By using inserts with a reduced length of primary land compared to prior art an unexpected increase in tool life and productivity has been obtained. Said positive results are further improved by subjecting the inserts to an additional heat treatment after grinding to final shape and dimension.
Claims8
(canceled)
A method of making a cemented carbide cutting tool insert for turning of titanium alloys comprising 5-7 wt-% Co and remainder WC the method comprising:
- (i) heat treating the insert after sintering and grinding to final shape and dimensions at 1375-1425° C. for 0.5-1.5 h in an atmosphere of Ar+25-50% CO at a total pressure of 50-100 mbar, and (ii) cooling to below 1250° C. at a rate of 4-5° C./min.
A method of turning titanium alloys using a cemented carbide cutting tool insert comprising 5-7 wt-% Co and remainder WC, the method comprising the following conditions:
- (i) Length of primary land:
- 0.1-0.4 mm;
- (ii) Cutting speed:
- 50-150 m/min;
- (iii) Feed rate:
- 0.3-0.6 mm;
- and
- (iv) Cutting depth:
- 0.5-10 mm.
Dependencies are inferred from the claim text.