Tungaloy Introduced Efficient Internal Thread Turning of Small Diameter Holes
Tungaloy Corporation introduced 375S2-G (4-5mm_3corners) model of turning solutions 'TurnLine' series with the expansion of insert and tool holder for small diameter internal threading. It offers an economical 3-edged insert for small holes in diameters 7.4 mm and larger, with the availability of through-coolant holders whereas the conventional has single-edged insert for hole diameters of 9.0 mm and larger, with no through-coolant.
It has a better cutting performance with proven 3.5 times tool life increase, as the number of screws machined pieces are a lot more with the use of SIR0007K08CB thread through internal coolant. The 375-G (Metric) models find applications in, ISO metric 60°, Unified 60°, General 60°, Whitworth 55°, General 55°, Parallel 55°, JIS taper pipe 55°, American National pipe 60°, Trapezoidal 30°, Trapezoidal 29°, Oil well pipe Round / Buttress, Round DIN405, and Aerospace.
This turning solution is powered with AH725 and GH330 grades for machining carbon steel & stainless steel in a wide variety of applications, within material ISO groups P and M. Standard cutting conditions with cutting speed Vc (m/min) of AH725 and GH330 grades for ISO groups P are 80-180 and 80-170 for <200 HB hardness, 60-160 and 60-130 for >200 HB, respectively, for ISO groups M are 50-130 and 70-120, respectively. Both the grades with insert size 06 & 08, pitch: 0.5-1.25, TPI: 48-20, and Hand of cut: R, come in 60o and 50o thread angles. However, for ISO metric, the internal insert grade AH725 comes with insert size 06 (pitch: 0.5-1.25, IC:4) & 08 (pitch: 1-1.75, IC:5), and Hand of cut:R specifications. TungThread provides incredible productivity in threading for various thread types with excellent chip evacuation and profile accuracy.
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