Обший каталог Yamawa 2016 - 2017 - страница 164

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Cemented Carbide Tap Series Spiral Fluted Taps (for blind hole) EH-CT Carbide Taps for Hard Materials Spiral Fluted Taps (for through hole) Specification Coating 1.5D Spiral Pointed Taps (for through hole) Recommended Tapping Speeds depending on Materials Hardened steel HRC IS H 〜5 Obtainable from Video site (m/min) shown in right Hand Taps For icon explanation, refer to P.50 Product features ●Most suitable for tapping high hardness steels of 45-55HRC such as steels for hot-forging die (100 MnCrW 4, X 155 CrVMo 12 1, etc.) ●Ultra fine grain carbide alloys with superior wear resistance and shock resistance are adopted. Cemented Carbide Taps ●By using the tap blanks in which both the run-out tolerance and the shank concentricity are improved, the high accuracy in screw threads can be obtained. ●For bored hole diameter, maximum of minor diameter tolerance of 6H internal threads is recommended. Tapping data [ M8×1.25 ] Roll Taps Tapping data 〈Torque line in the different bored hole size〉 Bored hole size 6.8mm(Actual 6.79mm) 6.9mm(Actual 6.89mm) EH-CT still Thread engagement ratio 89 81 runnin 1000 1000 900 torque（Ｎ・ ） 900 800 thrus（t Ｎ） 800 700 700 Previous breakage 600 600 Special Thread Taps Simple Inspection Tools 500 500 （Carbide tap） Beginning 400 400 300 300 200 200 0 50 100 150 200 250 300 350 400 (holes) 100 100 0 0 -100 0 2 4 6 8 10 12 -100 0 2 4 6 8 10 12 Work Type Hot forged die stee（l X 40 CrMosVt5il1l） Torque -200 -200 EmHa-CteTrial Hardness 50HRC still runnin and ETHa-pCpTing speed 1000 1000 6m/min runnin thrust lines 900 900 800 800 （PFCreeaveribodiudse tap） breFauklal griegid After 700 700 600 600 Pipe Taps 50 500 500 PTreavpiopuigs fluid breInaksaoglueble oil 400 400 holes 300 300 （Carbide tap）0 50 100 150 200 250 300 350 400 (holes) 200 200 tapping 100 100 0 50 100 150 200 250 300 350 400 (holes) 0 0 -100 0 2 4 6 8 10 12 -100 0 2 4 6 8 10 12 -200 -200 EH-CT still runnin Tapping condition Thread Mills Previous breakage Work material DAC（equivalent to X 40 CrMoV 5 1）50HRC （Carbide tap） Tapping speed 6m/min 0 50 100 150 200 250 300 350 400 (holes) Feed Rigid Work Type Stainless steel for plastic die（AISI420F） Tappig fluid Insoluble oil material Hardness 52HRC Tapping speed 6m/min Bored hole size enlarged by 0.1mm can reduce the tapping resistance Feed Full rigid torque by 10%. Dies Tappig fluid Insoluble oil In tapping the material of high hardness, it is recommendable to make the bored hole size as large as possible. Center Drills Recommended bored hole size (for reference) Application unit : mm pplic tion Recommended bored Minor dia. of ISO 6H class internal thread Tapping speed 1m/min 3m/min 5m/min 6m/min 15m/min Size hole size Workpiece Max. Min. M3 X0.5 2.55 2.599 2.459 60HRC M4 X0.7 3.4 3.422 3.242 High 55HRC UH-CT M5 X0.8 4.3 4.334 4.134 hardness Centering Tools M6 X1 5.1 5.153 4.917 materials 55HRC M8 X1.25 6.9 6.912 6.647 45HRC EH-CT M10X1.5 8.6 8.676 8.376 Heat 45HRC ※Please use feedrate/rotation treated materials EH-ＨＴ 25HRC synchronized tapping M12X1.75 10.4 10.441 10.106 Tool steels SKS・SKD attachments for UH-CT/EH-CT. EH-PO Alloy steels SCM・SCr DIN CT-3 160