Xwin® Grinding Rolls and Segments
An X-treme long life solution for your pulverizer
With Alstom behind me… I’m in control!
PoWer servIce
2
HigH Alloy MetAl And CerAMiCs MAke tHe differenCe
Alstom’s Long Life Xwin Grinding rolls and segments Last Longer Than chrome carbide overlays
The proprietary casting process
embeds ceramic particles and
reinforces them with high
chrome alloy in a unique chrome alloy in a unique
honeycomb design. The result is a
coal grinding system that features
reduced wear, increased traction and
increased resistance to breakage over
traditional systems. Xwin combines
the hardness of ceramics with the
reliability of High chrome alloys.
hARdNESS RATING OF
2,100VICkERS
Alstom’s industry leading pulverizer technology is now combined with Magotteaux’s Xwin cast product technology for rolls and segments. The Xwin Metal Matrix Composites combine the extreme wear resistance of ceramics with the mechanical properties of cast alloys. Actual performance data at full scale installations have shown that the wear life of Xwin grinding rolls is more than life of Xwin grinding rolls is more than two times (2x) that of standard chrome carbide weld overlay rolls.
EXTENd yOUR TIME BETWEEN OUTAGES | designed for use with both deep and shallow bowl pulverizers, Xwin grinding rolls and segments let you extend your TBO, allowing you to more efficiently manage and coordinate your maintenance operations…and lower your
cost at the same time. And because Xwin grinding rolls typically outlast the journal bearings, you no longer have to discard good bearings with each roll replacement. That is, Xwin grinding components maintain a longer “as new” profile.
The proprietary casting process
honeycomb design. The result is a
WITH ALsTom...You’re In conTroL
sTom...You’re In conTroLWITH ALs
MetAl MAtRIx coMPoSIte foR x-tReMe lonG lIfe.
®Xwin is a registered trademark of Magotteaux
3
254,000291,000
330,000
658,000AFTER 16 MONTHS
OPER
ATIO
NAL
RESU
LTS
TON
S OF
COA
L PR
OCES
SED
Ni-Hard Hi-ChromeGrooved Tungsten
Coal Type: Texas LigniteMill type: RP
2200
1,200,000
600,000
500,000
400,000
300,000
200,000
100,000
0
1.2 million PROJECTED
roI Calculation Considerations
TAkInG InTo AccounT THe benefITs of IncreAsed cAPAcITY And/or coAL fIneness, roI cAn be cALcuLATed bAsed uPon THe foLLoWInG consIderATIons.
3 reduced o&m cost
3 Improved pulverizer availability
3 Longer acceptable coal fineness characteristics
3 reduced frequency of roll-to-ring adjustments (eccentrics)
EASy TO INSTAll, NO SPECIAl MAINTENANCE – JUST lONGER lIFE | Xwin is a direct, dimensionally identical replacement for existing rolls and tires. Xwin rolls and tires can be used with standard segments and vice versa. No special handling requirements. No special maintenance or operating requirements. Just longer life and lower costs.
HARDNESS[HV]
Xwin
Hi-Chrome
Pyrite
Silica
Ni-Hard
CR Carbides
Slag
2200
2100
2000
1900
1800
1700
1600
1500
1400
1300
1200
1100
1000
900
800
700
600
500
400
300
200
100
0
MIneRAl HARDneSS vS. WeAR PRoDuctS
COAL
COM
POSI
TION
Alstom Power Inc.2000 Day Hill Road Windsor, CT 06095-0500 Tel: 860.285.2100Fax: 860.285.3101www.service.power.alstom.com PS
E/BP
ROB/
XWIN
GR
09/e
ng/P
SER
1/01
.09/
US/
6759
©20
09 A
lsto
m P
ower
Inc.
060
95.
Alst
om, t
he A
lsto
m lo
go a
nd a
ny a
ltern
ativ
e ve
rsio
n th
ere
of a
re tr
adem
arks
and
ser
vice
mar
ks o
f Als
tom
. Th
e ot
her n
ames
men
tione
d, re
gist
ered
or n
ot, a
re th
e pr
oper
ty o
f the
ir re
spec
tive
com
pani
es. T
he te
chni
cal a
nd o
ther
dat
a co
ntai
ned
in th
is d
ocum
ent i
s pr
ovid
ed fo
r inf
orm
atio
n on
ly. A
lsto
m re
serv
es
the
right
to re
vise
or c
hang
e th
is d
ata
at a
ny ti
me
with
out f
urth
er n
otic
e. X
win
is a
regi
ster
ed tr
adem
ark
of M
agot
teau
x.
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