Обший каталог Yamawa 2016 - 2017 - страница 164

Cemented Carbide Tap Series
Spiral Pointed Taps Spiral Fluted Taps Spiral Fluted Taps
(for blind hole)


EH-CT
Carbide Taps for Hard Materials
Specification
(for through hole)


Coating 1.5D

Recommended Tapping Speeds depending on Materials
(for through hole)


Hardened steel
HRC
IS H
〜
5 Obtainable from Video site
(m/min)
shown in right
For icon explanation, refer to P.50
Hand Taps


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)
Thread engagement ratio 89 81
EH-CT still
runnin 1000
900 torque（Ｎ・ ）
1000
900
thrust（Ｎ）
800 800
700 700
Previous breakage 600 600
Special Thread Taps
Pipe Taps Simple Inspection Tools


500 500
（Carbide tap） Beginning
400
300
400
300
200 200
0 50 100 150 200 250 300 350 400 (holes) 100
0
100
0
-100 0 2 4 6 8 10 12 -100 0 2 4 6 8 10 12
Work Type Hot forged die steel（X 40 CrMoV 5 1） Torque
-200 -200
EH-CT still
material Hardness 50HRC still runnin and
EH-CT
runnin
1000 1000
thrust lines
Tapping speed 6m/min
900 900

breakage
800 800
Previous After 700 700
Feed tap）
（Carbide Full rigid 50
600
500
600
500

Tappig fluid
Previous breakage
Insoluble 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
Previous breakage Work material DAC（equivalent to X 40 CrMoV 5 1）50HRC
Thread Mills


（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
Bored hole size enlarged by 0.1mm can reduce the tapping resistance
Tapping speed 6m/min
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.


Recommended bored hole size (for reference) Application
Center Drills


unit : mm pplic tion
Recommended bored Minor dia. of ISO 6H class internal thread Tapping speed
Size 1m/min 3m/min 5m/min 6m/min 15m/min
Workpiece
hole size Max. Min.
M3 X0.5 2.55 2.599 2.459 60HRC
M4 X0.7 3.4 3.422 3.242 55HRC
UH-CT
High
M5 X0.8 4.3 4.334 4.134 hardness
materials 55HRC
Centering Tools


M6 X1 5.1 5.153 4.917
45HRC
EH-CT
M8 X1.25 6.9 6.912 6.647
Heat 45HRC
M10X1.5 8.6 8.676 8.376 ※Please use feedrate/rotation
EH-ＨＴ
treated
materials 25HRC synchronized tapping
EH-PO
M12X1.75 10.4 10.441 10.106 Tool steels SKS・SKD attachments for UH-CT/EH-CT.
Alloy steels SCM・SCr


DIN
CT-3
160