8
HK-D_HK-DB-BA-e-2020
Min. strength d. Pattern with
fixed coupling
Min. coating thickness at
Surface hardening
5mm
≥0.8mm
5mm
≥0.8mm
1mm
≥0.2mm
10mm
≥1.2mm
Hardness
300HV
Penetration
diameter
Penetration
depth
0.54mm
24μm
0.54mm
24μm
0.38mm
12μm
Hardness
600HV
Penetration
diameter
Penetration
depth
0.54mm
17μm
0.54mm
17μm
0.32mm
8μm
Hardness
800HV
Intruder
Diameter
Penetration
depth
0.35mm
10μm
0.35mm
10μm
0.35mm
7μm
Available types of
Rebound sensors
D
:
General
tests
DC
:tests holes
or
cylindrical
cavities
DL
:tests
slender
or
narrow hollows
or holes
D+15: tests
grooves or
furrows
(sinks)
C
:
tests
small,
light,
thin parts and
surfaces
of
hardened
coatings
G:
Tests large,
thick, heavy
or
rough
steel
surfaces
Table 4, as an option: various support rings
No.
Rupture
of
non-
conventional
stabilising rings
Notes
1
For
testing
cylindrical
outer
surfaces
R10
~
R15
2
For
testing
cylindrical
outer
surfaces
R14.5
~
R30
3
For
testing
cylindrical
outer
surfaces
R25
~
R50
4
For
testing
cylindrical
inner
surfaces
R11
~
R13
5
For
testing
cylindrical
inner
surfaces
R12.5
~
R17
Содержание HK-D
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