T-A® A36 Mild Steel Structural Steel Fabrication
 
The end-user is machining flamecut A36 mild steel plate weldments using a radial arm drill machine, with flood coolant.
Previously the customer was using a Cleveland twist HSS taper shank drill running at the following parameters: 60 RPM, 0.003 IPR, (0,08 mm/rev) which resulted in 0.18 IPM (4,8 mm/min). The tool drilled a 2.5" (63,5 mm) diameter thru hole to a depth of 4.0 inches (102 mm). The tool had a cycle time of 22 minutes, 13 seconds and a tool life of 75 holes. The drilling operation was just too ineffective, so the customer was looking for performance improvements.
 
AMEC's Solution
Allied recommended the Original T-A® drill insert, item 135T-0216, coated with TiN, and holder #22050S-005I, while utilizing a 2T-6SR RCA for improved coolant. The tooling ran at a speed of 115 RPM, (restricted by the machine), 0.012 IPR (0,30 mm/rev) which resulted in 1.38 IPM (35 mm/min). It had a cycle time of 2 minutes and 54 seconds and a tool life of 300-plus holes. This operation served as a reminder as to how the Allied T-A® drilling system revolutionized the hole-making industry.
 
Benefit
Original T-A® delivered a cost per hole that fell from $28.36 to just $3.90 for an astounding cost savings of 86.2% while increasing the tool life by 4X over that of the competitive tool. Allied gave the customer precisely what they were looking for: significantly improved tool performance.