|
|
Cermet II Tests – Cutting Speed Tested: 1. Cermet II 20-tooth blade 2. VA 20-tooth blade with standard carbide saw tips. 3. BD 18-tooth blade. 4. IR 24-tooth blade 5. OL 36-tooth blade
Conditions: Free fall cutting through medium density particle board. 10 blades tested from each group. Time averaged for five cuts each.
No. Sample Ave time/10 blades (sec) l. Cermet II 2.4 Fastest Cut 2. VA 2.7 3. BD 4.6 4. IR 3.3 5. OL 8.3 Slowest Cut
Performance Test #2 Conditions: Select three best blades from each group in Test #1. Cut 5,000 ft each through 8-ft length medium density particle board.
No Sample Ave. Time through cut (sec) l. Cermet II 3.4 F astest Cut 2. VA 7.3 3. BD 10.6 4. IR 8.8 5. OL 48.4 Slowest Cut
Time of Cut Data - Measuring how fast a saw blade dulls out This was done with a mechanically controlled constant push on the chop saw. We ran different saw blades with different tooth counts in different materials. The test was run until some of the saw blades dulled out.
Under 20 Teeth # Teeth Ave. first test Ave. last test Increase in cutting time Cermet II 18 2.41 2.55 106% Least Wear Cermet II 20 2.38 3.39 142% P 18 3.28 10.23 312% M 16 2.96 49.07 1,658% Most Wear MS 16 2.67 21.45 803%
At the end of the test it took saw blade M 17x as long to make a cut as it did to make its first cut. Saw blade M took 8 times as long while the Cermet II blades showed considerably less wear.
Over 20 teeth MA 24 3.25 8.84 272% Cermet II 24 2.93 3.83 131% Least Wear Cermet II 20 2.7 7.34 272% F 24 6 59.6 993% Most Wear CC 20 5.7 32.41 569% O 24 7.3 10.59 145% P 24 4.59 25.4 553% R 36 8.31 48.44 583% Here blade F dulled out to where it took 10 times as long to make a cut. After the same number of cuts, the cermet II blades were considerably sharper and cut much faster than the other blades. |