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