| dc.description |
The requirements of this investigation were to determine
optimum tool geometry and cutting conditions for turning Ultra High
Strength Alloy Steel (fully heat treated to 120 tons per sq.ins.).
The material will be used for bolts, whose screw threads will be
produced by thread rolling. Dimensional accuracy required on the
blanks is 0.0002". The material in the above state presents
extremely severe conditions, especially on the nose of the turning
tool, and results in rapid wear and loss of dimensional accuracy.
Application of cutting coolants or lubricants made no measurable
improvement on tool nose wear, benefits gained from the use of
coolants being confined to reduction of flank wear. |
|