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 Click to enlarge image
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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
- 100% HIP Treatment
Composition
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COMPOSITION (wt%)
|
TiC
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Fe
|
Cr
|
Mo
|
Other
|
|
45(vol%)
|
55~57
|
5.5~7.0
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1.8~2.4
|
1
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Properties
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PROPERTIES
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| Density(g/cm3)
|
6.5
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| Rockwell "C" Hardness |
Annealing
|
45～48
|
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Hardening
|
68～70
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Coeffient of Themal Expansion
(x10-6 mm/mm°C) |
20～980°C
|
8.87
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Expansion Ratio
(10-6mm-°C-1-mm-1) |
20～100°C
|
6.38
|
|
20～550°C
|
8.67
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| Modules of Elasticity (kg/mm2) |
31,620
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| Transverse Rupture Strength TRS (kg/mm2) |
180
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| Compressive Strength (kg/mm2) |
200
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| Impact Strength (mm-kg/mm2) |
4.52
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| Conductivity (Watt-m-1-°C) |
12
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| Shock Resistance Water Cooling No. until crack appear at 1100°C |
15
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| Size Change (mm/mm) |
-0.00025
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Remachining Method
- Machine : CNC Lathe
- Tool : Insert Bite (RNGN1204 : Round), (SNGN120430 : Square)
- Bite : Ceramic (Whisker ＆ Reinforced)
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Product Compay(Country)
|
Taegu tech
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sangyong
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Grade
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AB20
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ST300
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- RPM : 100 ∼ 300
- Feed : 0.1mm/rev
- Depth of Cut : 0.02 ∼ 2mm
- Remachining Method
- First of all, you have to make chamfers before machining of grooves of the
rollers. It prevent chipping of the conner when the bite is coming out from
a roller.
- When you machine the groove you have to have a depth of machining
as deep as the worn out depth at first stage.
- After the first stage of machining,
precise machining has to be done by the depth of 0.02mm ∼ 0.1mm.
Regrinding Method
- Type of Wheel : Relatively soft, open structure, diamond
- Traverse grind wheel : diamond resin wheel : 150~170mesh
- Work rotation : slowest available
- Wheel traverse : 3.2m/min
- Feed : roughing 0.05mm per pass /
finish 0.005-0.01mm per pass
- Plunge grind wheel designation : diamond resin wheel : 150~170mesh
- Work rotation : slowest available speed
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