CONCRETE INDUSTRY AND ABRASIVE WEAR
description
Transcript of CONCRETE INDUSTRY AND ABRASIVE WEAR
CONCRETE INDUSTRY
AND ABRASIVE
WEAR
The concrete industry
The concrete industry
Två-kroppsabrasion Tre-kroppsabrasion
ABRASIVE WEAR MECHANISMS
Two body abrasion Three body abrasionThree body abrasion
PIN ON DISC WEAR MACHINE
Hardness, HV
Quenched & temperered
Wei
gth
lo
ss,
mg
Rst
52.3
Dx4
60M
C
Dx5
50M
C
Dx6
00M
CD
x650
MC
PADDEL WEAR MACHINEW
eig
th lo
ss, m
g
Rst
52.3
Dx4
60M
C
Dx5
50M
C
Dx6
90M
C
Dx6
50M
C
Qu
ench
ed &
Tem
per
ed
Qu
ench
ed &
Tem
per
ed
Hardness, HV
Results from Wear test by F.X.MEILLER (Germany)
0
10
20
30
40
50
60
70
80
90
100
0 100 200 300 400 500 600
Hardness (HB)
Rel
ativ
e W
ear
(St3
7=10
0%)
St37 QSt380N
BS70
VS70
DOMEX WEARVS100
VS130
CONCRETE TRANSPORT IN PIPE
CONCRETE MOVEMENT IN DRUM
HardnessAktivt layer
Steel-substrate
ACTIVE LAYER AND HARDNESS
200
3.0
600 800400
2.0
1.0
Per
litic
ste
els
Mar
tens
itic s
teel
s
Bai
nitic
stee
ls (A
uste
mpe
red)
Aus
teni
tic s
teel
s
Vickers hardness (HV)
Rel
ativ
e W
ear
Res
ista
nce
(p
ure
iron
= 1
)
Incr
easin
g Allo
y Con
tent
Cold Work Incr
easi
ng C
-con
tent
Effect of Microstructure and Composition on Wear
Wear versus Hardness of Different Steelsfrom field test in a concrete mixing facility during 1 1/2 year
(Initial thickness 4.0 mm)
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
100 150 200 250 300 350 400 450
Hardness Vickers 5kg
We
ar (
de
cre
ase
of
thic
kn
es
s)
mm Rst52-3
Domex Wear
Quenched &Tempered
0
5
10
15
20
25
Vo
lym
förs
lust
(m
m )
Dx350 Dx740 Seghärdat DxWear
3Wear during gravel transport
Q & T
150 HV250 HV
290 HV400 HV
Lo
ss o
f vo
lum
en
Rst52.3 Dx700
Weld HAZ
0.2 mm
Formability Weldability
OTHER IMPORTANT PROPERTIES