SET LATHE TOOL HOLDER (32X25) + 10 (TN-20) Made in USSR! NEW!

Plate TN-20 is the hard alloy on the basis of carbide and carbonitride of titanium,plus a complex carbide of titanium and niobium. The binder element used Nickel with the addition of molybdenumthe main advantages are the relative okalinolomatel,low coefficient of friction on steel,low tendency to adhesionOn the operational properties of the alloy тн20 is intermediate between grades K4 T30,and T15 K6,ie is recommended for use in semi-finishing and finishing.On the strength characteristics of this alloy is inferior to the standard TK and VC alloys,has a lower impact strength and the thermal conductivity(chustvitel to thermal and impact loads)The recommended range of cutting conditions in turning of steel nizkolegirovannojCutting speed is 80-220 m / minsupply-not more than 0.4 mm\cutting depth up to 3 mmThe microhardness of the alloy at temperatures up to 300 *C-higher than T15 K6,but with a slight excess is sharply reduced.It is therefore recommended to take measures for intensive heat removal from the cutting area-the angle to 45-60 degrees-possible reduction in continuous-time processing details-excessive coolingrecommended main angles:The angle alpha of 10 to 12 deg.The angle gamma is 8-10 degreesthe angle Phi 60-45 degAngle фи1 -15град