Transcript Relative Wear - DOMEX, DOMEX SAC

CONCRETE
INDUSTRY
AND
ABRASIVE
WEAR
The concrete industry
The concrete industry
ABRASIVE WEAR MECHANISMS
Two body abrasion
Två-kroppsabrasion
Three
body
abrasion
Three
body
abrasion
Tre-kroppsabrasion
Quenched &
temperered
Dx460MC
Dx600MC
Dx650MC
Rst52.3
Dx550MC
Weigth loss, mg
PIN ON DISC WEAR MACHINE
Hardness, HV
Hardness, HV
Dx690MC
Dx650MC
Quenched & Tempered
Quenched & Tempered
Dx460MC
Rst52.3
Dx550MC
Weigth loss, mg
PADDEL WEAR MACHINE
Results from Wear test by F.X.MEILLER (Germany)
100
St37
QSt380N
Relative Wear (St37=100%)
90
BS70
80
VS70
70
60
50
DOMEX WEAR
40
VS100
30
20
VS130
10
0
0
100
200
300
Hardness (HB)
400
500
600
CONCRETE TRANSPORT IN PIPE
CONCRETE MOVEMENT IN DRUM
ACTIVE LAYER AND HARDNESS
Hardness
Aktivt layer
Steelsubstrate
Effect of Microstructure and Composition on Wear
2.0
Cold Work
1.0
200
400
600
800
Vickers hardness (HV)
Increasing C-content
Relative Wear Resistance (pure iron = 1)
3.0
Wear versus Hardness of Different Steels
from field test in a concrete mixing facility during 1 1/2 year
(Initial thickness 4.0 mm)
Wear (decrease of thickness) mm
1
T
e
s
ts
p
e
c
im
e
n
s
0.9
0.8
R
o
ta
tio
n
s
e
n
s
e
S
p
e
cim
e
n
C
h
a
rg
e
Rst52-3
2
1
5
3
4
0.7
W
e
ld
0.6
Quenched &
Tempered
D
is
c
h
a
rg
e
a
Domex Wear
b
0.5
0.4
0.3
0.2
0.1
0
100
150
200
250
300
Hardness Vickers 5kg
350
400
450
Wear during gravel transport
20
3
Volymförslust
of volumen (mm )
Loss
25
15
150 HV
250 HV
10
400 HV
290 HV
5
0
Dx350
Rst52.3
Dx740
Dx700
Seghärdat
Q&T
DxWear
OTHER IMPORTANT PROPERTIES
Weld
HAZ
0.2 mm
Formability
Weldability