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| TURNING BERYLLIUM COPPER |
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Recommended turning parameters and tool geometries, carbide and high speed steel tools - Table 1 |
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| ALLOY | TEMPER | SURFACE SPEED | FEED RATE | BACK RAKE | SIDE RAKE | SIDE CUTTING EDGE ANGLE** |
END CUTTING EDGE ANGLE |
END AND SIDE RELIEF | NOSE RADIUS (in.) |
TOOL MATERIAL*** |
| CARBIDE TOOLS | ||||||||||
| 25, M25, 165 | A | 1500 1800 |
.010 - .020 | 0-10° | 10° | 0-15° | 5° | 5° | .032 | C-2 |
| H | 1200 1500 |
.010 - .020 | 0-10° | 10° | 0-15° | 5° | 5° | .032 | C-2 | |
| AT, HT | 900 1200 |
.010 - .020 | 0-10° | 10° | 0-15° | 5° | 5° | .032 | C-2 | |
| 3, 10 | A, H, AT, HT |
1500 1800 |
.010 - .025 | 0° | 5° | 0-15° | 15° | 5° | .030 | C-2 |
| HIGH SPEED STEEL TOOLS | ||||||||||
| 25, M25, 165 | A | 450 600 |
.010 - .020 | 0-20° | 20° | 0-15° | 5° | 5° | .032 | T-1 |
| H | 250 400 |
.010 - .020 | 0-10° | 10° | 0-15° | 5° | 5° | .032 | T-1 | |
| AT, HT | 200 300 |
.010 - .020 | 0-10° | 10° | 0-15° | 5° | 5° | .032 | T-1 | |
| 3, 10 | A, H, AT, HT |
600 700 |
.010 - .025 | 0° | 10° | 0-15° | 5° | 5° | .030 | M-2 |
| *Reduce listed cutting speeds
by 25% when turning dry. ** The side cutting edge should be varied to suit the configuration of the finished machined part, i.e. this angle will be 0° if the part requires a square shoulder, and should be approximately 15° if just a turning operation is to be performed. The side cutting edge of 15° will help prevent a rough machined surface by directing the chips away from the already machined surface. ***Classification of Tool Materials, Appendix A |
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SINGLE POINT TOOLCHIP BREAKER GEOMETRIES - FIGURE 2 |
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