The document discusses two types of materials: 1) "Hi-REX" high speed tool steel produced through centrifugal casting, which contains over 30% expensive alloys. It maintains high hardness and wear resistance at high temperatures and has good toughness to prevent cracking. It is exported worldwide and used in mill rolls, guides, and screws. 2) "Alloy-TiC" rollers which contain 45% titanium carbide. They have advantages like less wear, longer life due to less required regrinding, and resistance to oxidation. Both materials have applications in rolling and processing equipment.

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CENTRIFUGAL CASTING
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Excellent wear resistance
HighPerformance
.Advantages
I High Speed Tool steel "Hi-REX" manufactured by centrifugal casting contains]
more than 30% of expensive alloy materials (Cr,Mo,W,Ni,Co,V etc).
I It has very slow decrease of Hardness at high temperature, so that it keeps its high I
wear resistance, its unique mechanical property of toughness guarantees low
I
cracking, which makes productivity increase. At the request of customer it can varies I
its hardness. It has been proven that "Hi-REX" is superior to other traditional
I
materials. Currently we are exporting "Hi-REX" all over the world. "Hi-REX" is being I
used and proven its superiority in steel company's mill roll, gUide roller, pinch roller
etc and chemical industry's screw, paddle, buss screw etc
[
.Excellent wear resistance at high temperature
I
. High performance
. Less stock removal for grinding
I
. High resistance to oxidation and friction wear.
.Uniformity and stability of the finished products
I . Less material pick-up on surface.
I
.Properties
Density ( gfcm3 ) ] 8.5 - 8.8 I
Hardness(Hs)-for hot working I 75 - 85 I
for cold working I 88 - 95
Transverse Rupture Strength TRS ( kgfmm2) I 150 - 180
Young's Module ( kgfmm2) 38,000
- 110 I
I I I
I Tensile Strength ( kgfmm2) I 95
.Applications
- Three RoU Rings (KOCK~ ROLLS)
- Steel Wire Rod Mill Roll RingS
- Copper Wire Rod Mill Roll
- Deformed Bar Mill Roll Rings, Screw, Buss
- Section Mill RoUer RingS, Looper Roller
- Roller, Guide Roller, Pinch Roller, Sizing Roller
- Slit Guide Roller, Cutting Wheel, Twist RoUer

2. JI"".., TIn@) rT n
RIIUY-,llI - rl-lS
P/AI Tool Steel
.Imoaet resistant .Wear resIstant
-Good Toughness .Easy Regrinding
.Manufacturing Process
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. Pro.Qerties
Properties
C 1 Cr Mo v Si Fe
I COMPOS,
(wt%)
j 5-5.5 1-2 0.5-1 Sal
I Density (glcnf ) I 6.9- 7.5 1
I
nwell "C" Hardness (HRc ) I AM~~ I ~-~ j ""
I I Hardened I 54 -58 j
I Trans"""", Rupture StrengIh TRS ( MPa.) I 4, 136 j
I Modulus of (ft . Ib)
Toughness Eta_fly ( GPa.) I 221
47 j
I I J
I. (fndorm distribut ion of fine VanadiumCarbide(VC), No prosity
9 high toughness and high wear resistance.
- Finer carbide distribution
I
9 easy regrinding
- PowderAfetallurgical Product 9 less deformation during heat-treatment
I
r HSS(High Speed Steel)
higher volume of fine VC : higher wear resistance than commercial
. Applications
- Guide Holler and !fork Holl for wire rod, round bars & reinforcing bars.
- Pinch Holl, Looper Holls, !fear Parts
- Hot !fork Tooling, Knives,

3. Alloy- TJ8C@GUJ8de Roller
.Wear resistant .Imoact resistant .Tough .Light weight
.Advantages of "Alloy-TiC" Rollers
-Less wear on roller grooves,
hence larger output of the mill .
-Less stock removal per regrind,
hence the longer life.
-Reduced risk of bearing breakage
and failures.
- Uniformity and stability of the
finished products.
-No breakage of rollers during rolling.
-High resistance to oxidation and less
material pick-up.
-Relatively low price
.Composition
Composition TiC Fe Cr Mo Other
(wt%)
45(vol%) 55-57 5.5-7.0 1.8-2.4 1