ft-9 braking pinch rolls from project sales corp
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Powder Metallurgy Alloy Steel ( FT-9, FT-10, FT-23)
Powder Metallurgy Alloy Steel ( FT-9, FT-10, FT-23)
www.millroll.comDaewha Alloytech Co.,Ltd.
INTRODUCTION
HIP (Hip Isostatic Pressing)
Powder Metallurgy Process
Chemical Composition & Mechanical Properties
Mechanical Properties Comparison
Characteristics & Strengths
Assembly Process
Cooling Condition
ContentsContents
www.millroll.comDaewha Alloytech Co.,Ltd.
Introduction Introduction
FT-9, FT-10, and FT-23 is Powder Metallurgy Alloy Steel made by the Daewha Alloytech Powder Metallurgy Process (Canning HIP). They provide superior wear resistance while maintaining toughness and fabrication characteristics comparable to Rolling Steel such as D2, M2.
Mill rolls, Pinch rolls, Guider rollers, Table roller for Cold/Hot Rolling is superior to general Rolling and Casting steels in improving wear-resistance for above products. Presently, It is widely used in domestic and overseas markets.
Rolling HSS(SKH-51) FT-9
FT-9 : SVCR-9(USA, Sintermet), CPM-9V(USA, Crucible)
FT-10 : CPM-10V(USA, Crucible)
FT-23 : ASP-23(France, Erasteel)
Overseas Overseas
similar materialsimilar material
Structure Structure Comparison of Comparison of Carbide PicturesCarbide Pictures
www.millroll.comDaewha Alloytech Co.,Ltd.
HIP (Hot Isostatic Pressing) HIP (Hot Isostatic Pressing)
Kobe Steel Maker
Press Proper Type Press frame type Multiple steel plate yoke type
Maximum working pressure 118 MPa (17,115 Psi)
Loading style Bottom loading
Furnace Type Graphite, three zone
Maximum working Temperature 1500℃
Process gas Argon
Furnace size Φ600mm × 1,300mm
Product / Product basket (Crucible) size Φ550mm × 1,300mm
Hot Isostatic Pressing is a method by which a workpiece is processed under the simultaneous application of high-pressure gas and high- temperature.HIP can solve many technical problems which were impossible to solveby conventional processes.
HIP (Hot HIP (Hot IsostaticIsostatic Pressing)Pressing)
SpecificationSpecification
www.millroll.comDaewha Alloytech Co.,Ltd.
Powder Metallurgy ProcessPowder Metallurgy Process
The shapes of materials by Canning HIPThe shapes of materials by Canning HIP
Powder Metallurgy Powder Metallurgy ProcessProcess
Atomization Canning, Degassing HIP Powder MetallurgyAlloy Steel
Single Square Material Single Rods MaterialPowder Metal + Steel Bonding
Single Ring Material
www.millroll.comDaewha Alloytech Co.,Ltd.
Chemical composition & Mechanical propertiesChemical composition & Mechanical properties
Chemical Chemical Composition(wtComposition(wt%)%)
Materials C Cr Mo V W Fe
FT-9 1.85 5.25 1.30 9.00 - Bal
FT-10 2.45 5.30 1.30 9.50 - Bal
FT-23 1.30 4.20 5.00 3.10 6.30 Bal
Physical / Mechanical PropertiesPhysical / Mechanical Properties
Classification FT-9 FT-10 FT-23
Density (g/cm3) 7.45 7.45 8.00
Hardness(HrC)Annealed 25~29 25~29 20~24
Hardened 54~58 60~64 60~66
Transverse Rupture Strength (Kg/mm2) 600~620 610~630 570~600
Modulus of Elasticity (GPa) 221 221 207
Tensile Strength (Kg/mm2) 95~110 95~110
www.millroll.comDaewha Alloytech Co.,Ltd.
Wear-Resistance & Toughness ComparisonWear-Resistance & Toughness Comparison
www.millroll.comDaewha Alloytech Co.,Ltd.
⊙ Wire rod Mills in Intermediate stands, Mill rolls in Finishing stands
Round Bar/Re-Bar/other Bar Mills in Intermediate stands, Mill rolls in Finishing stands
Being used to Oval, Round, Angle, Profile, Slit, Dog bone, etc.
⊙ Ring-Type Mill roll, Kocks Roll, Pinch Roller, Sizing Roller, Guide Roller,
and Rollers for transmission
⊙ Material: Square, Round Bar, Rod
Applications Applications
www.millroll.comDaewha Alloytech Co.,Ltd.
Applications Applications
⊙ Composite Roll-Assemble Method : Hydraulic Method (1800~2300Bar) +
Mechanical Method (Key, Lock Nut)-Roll Ring : FT-9, FT-10, FT-23 (Powder Metallurgy Steel)
Tungsten Carbide, RESISTAR ® (Casting HSS)FT-1(Titanium Carbide)
-Shaft : Forged SNCM, SCM, SUS (Optional)-Clamping System : SCM440
⊙ Braking Pinch Roll-FT-9 + Mild Steel
-Canning HIP
Powder metal
Mild Steel
www.millroll.comDaewha Alloytech Co.,Ltd.
⊙ Superior wear-resistance: 4~6times vs DCI, 2~3times vs HSS, 4~6times vs Tool Steel
⊙ Materials without porosity by HIP (Hot Isostatic Press)
⊙ Possible to produce (Mild steel+FT-9 or FT-10 or FT-23) and economical and easy for assembly.
Applicable to the part of use.
⊙ Minute compound Carbides are distributed equally.
Improvements to Toughness, Wear-resistance, Yield hardness, and Anti-corrosion.
⊙ Keeping Wear-resistance, Toughness, and Hardness up to 500℃, Minimize crack
⊙ Sintering manufacture with Alloyed Powder atomized: Protection for one side wear of rolls
and roll marking (Good shape of wear).
⊙ Similar Hardness to Casting HSS with almost same condition of Heat Treatment.
But Heat Treatment transform and low thermal expansion coefficient.
⊙ Excellent effect versus cost (Reduction effect of repair time and cost)
⊙ Easy reprocessing and remachining versus DCI and HSS. (Approx. more than 15%)
⊙ Lathe and CNC Machining with ceramic, CBN bite(0.5~2mm remachining)
Characteristics & StrengthsCharacteristics & Strengths
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Fixing Shaft andinserting Spacer
Inserting Rings Rings inserting completedand inserting O-ring
Hydro ring, unit setupand tightening
Oil pressure supply(2,000 bar)
Fixing Shaft and Protection-Application key-Inserting
Heating for Shrink Fit of rings andPulling it out of the furnace
Ring Shrink Fit Rings cooling AndTightening with a Jig
Assembly ProcessAssembly Process
www.millroll.comDaewha Alloytech Co.,Ltd.
Powder Metallurgy Alloy Steel Ring
Pressure 3 ~ 5 bar
Quantity 20~25 m3 / h Stand
T.C Ring
Pressure 4 ~ 6 bar
Quantity 25~30 m3 / h Stand
bar:1000hPa
Cooling ConditionsCooling Conditions
www.millroll.comDaewha Alloytech Co.,Ltd.
TEL : 82-31 - 355 - 7347
FAX : 82-31 - 355 - 7352
Thanks for your attention
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