49 Каталог KORLOY 2020 Инструмент и оснастка для станков по металлу Стр.A37

Каталог KORLOY 2020 Инструмент для станков по металлу Стр. A37 0049 Lab2u

Milling Grades Uncoated carbide grades Features Due to KORLOY's advanced sintering technology, our uncoated carbide grades have a fine alloy structure which is necessary to get superior quality from a uncoated cutting tool O Advantages Consist of P,M,K carbide grades and can be used in all kinds of workpiece Excellent quality at machining with coolant, due to the superior thermal crack resistance of the carbide Due to the special design of carbides, it has fine micro structure and low affinity with workpiece It has excellent toughness and produces lower cutting loads P type M type K type O Selection system of uncoated carbide grade Workpiece Grade Recommended cutting speed (m/min) ISO Application range P Steel ST20 90 (70 110) P20 ST20 ST30A 80 (60 100) P30 ST30A M Stainless steel U20 90 (70 110) M20 M30 K N Cast iron H01, H05 150 (110 190) K10 H01 H05 G10 120 (90 150) K20 G10 I Aluminum alloy H01 600 (450 750) N10 Copper alloys H05 425 (320 530) N20 H05 O Main composition and application range Workpiece Composition Features Workpiece P WC-TiC-TaC-Co Excellent thermal shock resistance and plastic deformation resistance Carbon steel, Alloy steel, Stainless steel M WC-TiC-TaC-Co General grades with thermal shock resistance and hardness Carbon steel, Alloy steel, Stainless steel, Cast steel K WC-Co High hardness and superior wear resistance Cast iron, Non-ferrous metal, Non metal O The physical properties of uncoated carbide grades Workpiece Grade Hardness (HRA) TRS (kgf/mm2) Young’s modulus (103kgf/mm2) Thermal expansion coefficient(10-6/°C) Thermal conductivity (cal/cm-sec-X) P ST10 92.1 175 48 6.2 25 ST20 91.9 200 56 5.2 45 ST30A 91.3 230 53 5.2 - M U20 91.1 210 88 K H01 92.9 210 66 4.7 109 G10E 90.9 250 63 - 105 1KPa = 102kgf/m2, 1w/mk = 2.39x10-3cal/cm'sec'°c Grades & Chip Breakers 37